Waterston tides today
- Tide now 15.9 ft ↓ falling · low 1:47 am (3.0 ft)
- Best time tomorrow 2:20–3:10 pm great day · 9/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 5.4 ft · 57 °F moderate · 9.0 s from the west-southwest
- Wind · air 7 mph · 56 °F from the SW, gusts 12 · overcast
- Sun 7:07 am–5:00 pm 9 h 53 min of daylight
- Moon 92% · 5:45 pm waning gibbous · rises at 5:45 pm
- Diving tomorrow 12:50–1:30 pm fair day · 4/10
Today in Waterston there are high tides at 7:09 am (23.6 ft) and 7:31 pm (23.5 ft) and low tides at 1:06 am and 1:28 pm. Tide coefficient 98. Right now the tide is falling toward the low tide at 1:47 am. The sun rises at 7:07 am and sets at 5:00 pm: 9 h 53 min of daylight. The moon is 92% illuminated (waning gibbous) and rises at 5:45 pm. Major solunar periods run from 12:43 am to 2:43 am and from 1:14 pm to 3:14 pm. The next spring tides arrive from October 26 to 28. The sea is moderate, with 5.4 ft waves. There's a light breeze from the southwest (7 mph). Overcast, 56 °F.
Fishing in Waterston today
Best time to fish
Solunar activity today: high- Low tide at 1:28 pm
- Major period 1:14–3:14 pm
- Rising pressure (+0.39 inHg in 24 h), moderate onshore wind (13 mph) and 7.0 ft waves
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 98 (spring tides)
- A minor period lines up with sunset
Your day at a glance
The best window, 1:10 pm to 2:30 pm, combines the 1:28 pm low tide and a major period, though with rising pressure and moderate wind. Also worth a try from 12:40 am to 1:30 am, with the 1:06 am low tide and a major period, though with rising pressure and moderate wind. Also worth a try from 6:30 am to 8:00 am, with the 7:09 am high tide and sunrise, though with rising pressure and fresh wind.
Species with the most records nearby: common sole, European plaice, small-spotted catshark and whiting. October is one of the months when these are seen most: common sole and European plaice. What you can catch
Beach day in Waterston
Is it a beach day?
- Low tide at 1:28 pm: more sand
- Cloudy (89% cloud cover)
- Feels like 53 °F: chilly for the beach
- Rain (0.01 in)
- Moderate onshore wind (17 mph): choppy water
- Dangerous for swimming: 7.8 ft waves every 9 s; high rip current risk
Dangerous surf during beach hours. Stay out if the red flag is up, and never swim where there is no lifeguard.
Today, hour by hour
- Swimming Dangerous · 7.8 ft
7.8 ft waves every 9 s: dangerous for swimming. Stay out if the red flag is up. High rip current risk. If you're caught in a rip current, don't swim against it: swim parallel to shore and wave for help. Always follow the lifeguard's flags.
- Water 57 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 17 mph
Moderate onshore wind (17 mph).
- Tide & sand 1:06 am
Low tide at 1:06 am and 1:28 pm: that's when there's the most sand. High tide at 7:09 am and 7:31 pm. Coefficient 98 (spring tides): little sand left at high tide.
We don't have data on jellyfish, sargassum or beach closures: ask the lifeguard or check with the local beach authority. How it works · The next 7 days
Beaches near Waterston
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Sandy Haven Beach 4.7 mi · W
- Parking
Excellent water quality 2025 season, Natural Resources Wales
- Freshwater West 5.0 mi · SW
- RNLI lifeguards in season
- Restrooms
- Parking
Excellent water quality 2025 season, Natural Resources Wales
- West Angle Beach 5.4 mi · W
- Restrooms
- Parking
Excellent water quality 2025 season, Natural Resources Wales
- Frainslake Sands 5.6 mi · SW
Named beaches within 6.2 mi, nearest first. Amenities from OpenStreetMap: some may be missing or out of date. View on OpenStreetMap · Add or fix on OpenStreetMap
Beaches and amenities: © OpenStreetMap contributors (ODbL).
UK bathing water quality: Natural Resources Wales. Contains public sector information licensed under the Open Government Licence v3.0. Full attribution. Lifeguards: RNLI. Contains Open Data licensed under the GIS Open Data Licence.
Webcams near Waterston
Webcams provided by windy.com — add a webcam
Tides in Waterston
Today's high and low tides
- ▼ Low tide 1:06 am 2.5 ft
- ▲ High tide 7:09 am 23.6 ft · coef. 98
- ▼ Low tide 1:28 pm 2.6 ft
- ▲ High tide 7:31 pm 23.5 ft · coef. 96
↓ Falling The tide is falling. 3 h 50 min to low tide at 1:47 am.
Tide coefficient 98 for the 7:09 am high tide and 96 for the 7:31 pm high tide. Spring tides. The water rises and falls 21.2 ft between the highest high and the lowest low: a large range for this place. 70 is an average tide here; 90 and above means spring tides; below 45, neap tides. What is the tide coefficient?
2026 extremes: the highest tide of the year is on March 21 (24.1 ft) and the lowest, on August 15 (1.2 ft).
Semidiurnal: two high and two low tides a day, of similar height.
Heights above chart datum: the lowest astronomical tide (LAT), the zero of nautical charts in Europe. Astronomical prediction: wind and air pressure can raise or lower the water by a few inches, and more in a storm. Not for navigation. chart datum (LAT)
Tide coefficient and range in October
The biggest tides of the month came from October 26 to 28 (coefficient 99, 21.5 ft range). The smallest, from October 19 to 20 (coefficient 29, 6.8 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Wed 28 | 7:07 am · 5:00 pm | Low tide 1:06 am · 2.5 ft | High tide 7:09 am · 23.6 ft | Low tide 1:28 pm · 2.6 ft | High tide 7:31 pm · 23.5 ft | Coef. 98 | 92% | Major periods 12:43 am · 1:14 pm | High |
| Thu 29 | 7:09 am · 4:58 pm | Low tide 1:47 am · 3.0 ft | High tide 7:50 am · 23.3 ft | Low tide 2:11 pm · 3.3 ft | High tide 8:15 pm · 22.6 ft | Coef. 93 | 85% | Major periods 1:46 am · 2:18 pm | Medium |
| Fri 30 | 7:10 am · 4:56 pm | Low tide 2:30 am · 4.0 ft | High tide 8:34 am · 22.5 ft | Low tide 2:57 pm · 4.2 ft | High tide 9:02 pm · 21.3 ft | Coef. 84 | 76% | Major periods 2:51 am · 3:23 pm | Medium |
| Sat 31 | 7:12 am · 4:54 pm | Low tide 3:17 am · 5.2 ft | High tide 9:23 am · 21.3 ft | Low tide 3:49 pm · 5.4 ft | High tide 9:55 pm · 19.8 ft | Coef. 72 | 65% | Major periods 3:54 am · 4:24 pm | Medium |
| Sun 1 | 7:14 am · 4:52 pm | Low tide 4:11 am · 6.5 ft | High tide 10:19 am · 20.0 ft | Low tide 4:54 pm · 6.6 ft | High tide 10:59 pm · 18.4 ft | Coef. 60 | Last quarter | Major periods 4:52 am · 5:20 pm | Medium |
| Mon 2 | 7:16 am · 4:51 pm | Low tide 5:21 am · 7.5 ft | High tide 11:29 am · 18.8 ft | Low tide 6:18 pm · 7.2 ft | — | Coef. 51 | 43% | Major periods 5:46 am · 6:12 pm | Medium |
| Tue 3 | 7:17 am · 4:49 pm | High tide 12:19 am · 17.6 ft | Low tide 6:48 am · 7.8 ft | High tide 12:55 pm · 18.4 ft | Low tide 7:45 pm · 6.9 ft | Coef. 49 | 32% | Major periods 6:36 am · 6:59 pm | Medium |
▲ high tide · ▼ low tide · heights above chart datum (LAT). Major periods: start time; they last 2 hours. Activity: based on the moon phase and the solunar periods.
Where this tide comes from
Tides from the Milford Haven station (Environment Agency), 2.8 mi from Waterston. Times and heights are its predictions.
Station data attribution: This uses Environment Agency tide gauge data from the real-time data API (Beta): Milford Haven (E73024), https://environment.data.gov.uk/flood-monitoring/id/stations/E73024. Contains public sector information licensed under the Open Government Licence v3.0 (https://www.nationalarchives.gov.uk/doc/open-government-licence/version/3/). Modified: harmonic constants fitted by TidePlanet from the 15-minute sea levels of 2025-10-29 to 2026-10-22 (356 days).
The sea at Waterston
Sea stateSea state: moderate
The waves you may find
- Most commonMost common2.7 ft
- Significant5.4 ft
- Highest expectedHighest11 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 11 ft. Before heading out, expect waves of up to 11 ft.
Wind on the coast and offshore
Onshore wind. The coast faces south and the wind blows straight in from the sea: more surf and backwash at the shore, and bait and boats drift toward land.
Wave height, next 7 daysWaves, next 7 days
Waves ease over the next few days. The biggest waves arrive on Wednesday 28: 8.3 ft with a period of 10 s, from the west-southwest (rough).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water is steady these days, with no sudden changes.
Water about normal for late October.
Satellite: NASA MUR (JPL MUR MEaSUREs, PO.DAAC), doi:10.5067/GHGMR-4FJ04. Sources and licenses
Water temperature →Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 9:57 pm (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from Centre for Environment, Fisheries and Aquaculture Science, Lowestoft Laboratory (CEFAS), via the E.U. Copernicus Marine Service. Generated using E.U. Copernicus Marine Service Information (doi:10.48670/moi-00036).
Diving in Waterston today
Diving and snorkeling today
Likely visibility: poor- Tidal current running: mid-tide, the water is moving
- 5.7 ft swell at 8 s from the west-southwest: strong surge on the bottom
- Moderate onshore wind (16 mph)
- 0.5 mph current toward the east-southeast, weak (model)
- Sun high: more light underwater
Not a day for shore diving: swell, wind, current or storms during the best window. If you go, go with a dive shop and only if they give the OK.
- Slack water today: low tide 1:06 am (12:40–1:30 am), high tide 7:09 am (6:50–7:30 am), low tide 1:28 pm (1:00–1:50 pm) and high tide 7:31 pm (7:10–7:50 pm)
- Likely visibility: poor. Swell (up to 9.4 ft at 9 s) and wind over the last few days have stirred up the water. Based on the last 24 hours of data.
- Water at 57.0 °F: a 7 mm semi-dry suit, with hood, gloves and booties.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 5:35 pm. Waning gibbous (92%), rising at 5:45 pm: a bright night.
Your diving day at a glance
The best window, 10:30 am to 11:30 am, combines weak current and the sun high, though with tidal current, a big swell and moderate wind. Also worth a look from 2:30 pm to 5:30 pm, with light wind, though with tidal current, a big swell and current.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Plm 21 5.2 mi
- Behar 5.5 mi
- HMS Leda 5.6 mi
- Pauline Elizabeth 5.7 mi
- Wreck 1.2 mi
- Wreck 1.6 mi
- Wreck 1.8 mi
- Wreck 2.5 mi
- Wreck 4.5 mi
- Blue Thunder Charters 2.1 mi
- Haven Diving 2.4 mi
- Tything Barn Holidays 6.1 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Wreck and reef positions are approximate and not for navigation; a wreck’s depth runs from the top of the hull to the seabed.
Sites: © OpenStreetMap contributors (ODbL). Wrecks: EMODnet Human Activities (AND-International), from UK Hydrographic Office data, CC BY 4.0. Contains public sector information licensed under the Open Government Licence v3.0.
Weather in Waterston
Now in Waterston
- Low / high
- 55 / 58 °F
- Rain
- 0.02 in · 89%
- Clouds
- 100%
- Humidity
- 90%
- Dew pointDew point
- 53 °F
- Visibility
- 13 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 32
- Saharan dust
- No
- Pollen
- None
Pressure and fishing
- ↗ RisingRising Anglers say fish bite less for a while
- → SteadySteady · now Anglers expect normal activity
- ↘ FallingFalling Anglers say fish feed more before the change
Steady now (+0.02 inHg in 3 hours). Over the next 48 hours: +0.09 inHg. Steady pressure: anglers expect normal activity. Fast changes, either way, tend to affect fishing.
Today, hour by hourHour by hour
Bars: mean wind. Dashed line: gusts. Arrows point where the wind blows to.
| Time | 12:00 am | 3:00 am | 6:00 am | 9:00 am | 12:00 pm | 3:00 pm | 6:00 pm | 9:00 pm |
|---|---|---|---|---|---|---|---|---|
| Sky | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast |
| Temperature | 55° | 56° | 57° | 57° | 58° | 57° | 56° | 56° |
| Wind (mph) | 17 WSW | 18 WSW | 19 WSW | 16 WSW | 16 WSW | 12 WSW | 8 WSW | 7 SW |
| Gusts | 30 | 30 | 33 | 27 | 26 | 22 | 16 | 12 |
| Waves | 8.3 ft | 7.9 ft | 7.9 ft | 7.7 ft | 7.3 ft | 6.8 ft | 6.1 ft | 5.6 ft |
| Rain | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 9:00 pm 56° 7 SW 5.6 ft
- 12:00 am 56° 7 SW 5.1 ft
- 3:00 am 56° 4 S 4.6 ft
- 6:00 am 56° 5 SSE 4.3 ft
- 9:00 am 56° 8 SSE 4.1 ft
- 12:00 pm 57° 11 SSE 3.9 ft
- 3:00 pm 57° 12 SSE 4.0 ft
- 6:00 pm 56° 10 SSE 4.2 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 55 / 58 °F | 19 mph WSW | 8.3 ft | 7:09 am · 7:31 pm | |
| Thu 29 | 54 / 57 °F | 12 mph SSE | 5.1 ft | 7:50 am · 8:15 pm | |
| Fri 30 | 53 / 58 °F | 13 mph SE | 4.2 ft | 8:34 am · 9:02 pm | |
| Sat 31 | 50 / 55 °F | 13 mph ESE | 4.1 ft | 9:23 am · 9:55 pm | |
| Sun 1 | 48 / 58 °F | 8 mph NNE | 2.5 ft | 10:19 am · 10:59 pm | |
| Mon 2 | 44 / 53 °F | 9 mph ENE | 1.6 ft | 11:29 am | |
| Tue 3 | 42 / 53 °F | 8 mph ENE | 1.5 ft | 12:19 am · 12:55 pm | |
| Wed 4 | 43 / 53 °F | 12 mph ENE | 2.3 ft | 1:45 am · 2:16 pm | |
| Thu 5 | 45 / 52 °F | 11 mph E | 3.5 ft | 2:54 am · 3:19 pm | |
| Fri 6 | 44 / 51 °F | 17 mph ESE | 2.7 ft | 3:47 am · 4:08 pm | |
| Sat 7 | 44 / 51 °F | 14 mph E | 6.0 ft | 4:32 am · 4:51 pm | |
| Sun 8 | 50 / 56 °F | 12 mph ESE | 3.3 ft | 5:12 am · 5:30 pm | |
| Mon 9 | 56 / 58 °F | 10 mph SSE | 3.5 ft | 5:49 am · 6:06 pm | |
| Tue 10 | 54 / 58 °F | 8 mph SSE | 2.7 ft | 6:24 am · 6:40 pm |
- Thu 29 Overcast 54° / 57° 5.1 ft
- Fri 30 Overcast 53° / 58° 4.2 ft
- Sat 31 Overcast 50° / 55° 4.1 ft
- Sun 1 Fog 48° / 58° 2.5 ft
- Mon 2 Overcast 44° / 53° 1.6 ft
- Tue 3 Overcast 42° / 53° 1.5 ft
- Wed 4 Overcast 43° / 53° 2.3 ft
Each day comes from the best model covering this spot: regional ones first (HRRR and NBM in the U.S., AROME, ICON-EU), then ECMWF; day 16, NOAA GFS. Waves: Météo-France up to day 10, then ECMWF WAM, coarser and further offshore. High tides: our own tide calculation.
- The models Partly agree · medium confidence: unsure about rain today. See the models →
- Outlook Next few weeks, compared with normal: normal temperatures, normal rain and a slightly warmer sea. See the outlook →
- Normal Today, warmer than normal for late October (+2.8 °F; normal high: 56 °F). Climate by month →
Forecast from Open-Meteo (CC BY 4.0) with models from ECMWF, NOAA, Météo-France, DWD, Copernicus Marine and CAMS. Updated at 9:57 pm (local time).
The sun in Waterston
Sunrise and sunset
- First light 5:53 am
- Full dark 6:14 pm
- Civil dawn 6:32 am
- Civil dusk 5:35 pm
- Solar noon 12:04 pm (25° high)
- Daylight 9 h 53 min (−4 min)
- Evening golden hour 4:11 pm
- Full dark 6:14 pm
Golden hour and the day-night map
Today the sun is 92,359,522 mi away and looks 32′ 11″ across.
The moon in Waterston
Moon phase and position
Today the moon is 226,451 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: high- 12:43–2:43 am Major · the moon passes overhead · high activity
- 1:14–3:14 pm Major · the moon passes underfoot · high activity
- 10:08–11:08 am Minor · moonset · medium activity
- 5:15–6:15 pm Minor · moonrise · medium activity
According to solunar theory, fish feed more when the moon passes overhead or underfoot (major periods, about 2 h) and when it rises or sets (minor periods, 1 h). It works best around new and full moon.
Upcoming moon phases
2026 moon calendar →- Last quarter Sun, Nov 1 · 8:29 pmNov 1 in 4 days
- New moon Mon, Nov 9 · 7:03 amNov 9 in 12 days
- First quarter Tue, Nov 17 · 11:48 amNov 17 in 20 days
- Full moon Tue, Nov 24 · 2:54 pmNov 24 in 27 days
Perigee on October 28, 226,426 mi away, coinciding with the spring tides from October 26 to 28: they will be stronger than usual.
Where to fish in Waterston
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Ward's Pier 1.6 mi
- Trinity House Pier 2.6 mi
- Dale Fort pier 7.1 mi
- Hazelbeach 0.9 mi
- Boat ramp 1.7 mi
- Boat ramp 1.8 mi
- Marina 0.9 mi
- Neyland Yacht Haven - Upper Basin 1.9 mi
- Neyland Yacht Haven - Lower Basin 2.0 mi
- Milford Marina 2.1 mi
- Cast And Craft Fishing For Health 2.1 mi
- J And M's Tackle And Bait Shop 2.4 mi
Within 9.3 mi. A spot may be missing or closed. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Spots: © OpenStreetMap contributors (ODbL) and Overture Maps.
Water depth
Drops off fastThe bottom drops off fast: the water is 33 ft deep just 550 ft from shore.
From the shoreline (0.9 mi from Waterston) out to sea, heading southeast.
How far from shore
- 16 ft deep390 ft
- 33 ft deep550 ft
- 66 ft deepnot within 0.95 mi
- 164 ft deepnot within 0.95 mi
For fishing, swimming and diving
- Shore fishing. Deep water close in: about 9.5 ft just 330 ft out. Good for casting from rocks, jetties or the beach itself; current and surf hit harder here.
- Swimming. The bottom drops quickly near the shore and you are soon out of your depth. Keep an eye on kids and weak swimmers.
- Diving. 33 ft deep 550 ft from shore; 66 ft is far out (beyond 0.95 mi): for deeper dives, go by boat.
Inside bays, estuaries and harbors the bottom changes a lot from spot to spot (channels and shoals): use this only as a rough guide. There is land ahead (an island, a headland or the far shore) 0.95 mi out. The profile is turned slightly from the coast so it does not run into an island or a headland. Right by the shore the bottom may drop even faster than shown. Where the bottom comes up to the surface there are shoals, rocks or an islet next to the profile.
Source: EMODnet Bathymetry DTM 2024 (CC BY 4.0), cells of about 380 ft; depth at the lowest astronomical tide. For reference only: not for navigation or anchoring.
Nearest lighthouse
Little Castle Head Light 5.2 mi west
- Light
- White light that goes dark once every 8 s · Oc W 8s
- Range
- 15 nautical miles (17 mi)
- Light height
- 174 ft above sea level
- Tower height
- 85 ft
Other lighthouses nearby: Great Castle Head Light (5.6 mi west).
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses
Tides near WaterstonTides nearby
- Neyland1.6 mi
- Steynton1.7 mi
- Milford Haven2.0 mi
- Pembroke Dock2.5 mi
- Pembroke4.1 mi
- Haverfordwest6.2 mi
- Broad Haven6.8 mi
- Freshwater East6.8 mi
- Jameston8.4 mi
- Kilgetty12 mi
Waterston at a glance
- Town or city of about 335 people. Coordinates: 51.713° N, 4.988° W.
- It is 19 mi south of Fishguard, the main place in Pembrokeshire. The sun rises 1 min earlier and sets 1 min later than in Fishguard.
- The nearest tide station, Milford Haven, is 2.8 mi to the west.
- Its coast faces south.
- Beaches and harbors nearby: Pembroke Port (1.8 mi), Milford Haven Port (2.8 mi).
Questions about WaterstonQuestions
What time is high tide today in Waterston?
Today in Waterston there are high tides at 7:09 am (23.6 ft) and 7:31 pm (23.5 ft) and low tides at 1:06 am and 1:28 pm. Tide coefficient 98.
What time is sunset today in Waterston?
At 5:00 pm. There is light until the end of civil twilight, at 5:35 pm.
What time is sunrise tomorrow in Waterston?
At 7:09 am. First light comes at 5:54 am.
What phase is the moon today?
Waning gibbous, 92% illuminated. New moon on Mon, Nov 9 · 7:03 am.
When are the next spring tides?
From October 26 to 28, together with the lunar perigee: they will be stronger than usual.
What are today's solunar periods?
Major 12:43–2:43 am, Minor 10:08–11:08 am, Major 1:14–3:14 pm, Minor 5:15–6:15 pm. Today's activity is high.
What's the weather like today in Waterston?
Light rain, from 55 °F to 58 °F, with a light breeze from the southwest (7 mph) and a 89% chance of rain.
How is the sea today in Waterston?
Moderate (Douglas 4): 5.4 ft waves with a period of 9.0 s from the west-southwest. The water is 57.0 °F.
When is the best time to visit Waterston?
The best time to visit Waterston is from June to August: highs of 63 °F to 66 °F, about 11 rainy days a month and 7 hours of sunshine a day.
Can I use this data for navigation?
No. These are predictions for fishing and leisure; for navigation, use the official publications.
Where this data comes from
Tide: Milford Haven tide gauge (UK National Tide Gauge Network). This uses Environment Agency tide gauge data from the real-time data API (Beta), under the Open Government Licence v3.0; constants fitted by TidePlanet from a year of its readings. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).