Broadstone tides today
- Tide now 7.1 ft ↑ rising · high 9:05 pm (7.1 ft)
- Best time tomorrow 4:40–5:20 pm great day · 9/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 2.8 ft · 59 °F slight · 7.4 s from the southwest
- Wind · air 1 mph · 52 °F calm · overcast
- Sun 6:53 am–4:50 pm 9 h 58 min of daylight
- Moon 92% · 5:39 pm waning gibbous · rises at 5:39 pm
- Diving tomorrow 10:30–11:10 am average day · 6/10
Today in Broadstone there are high tides at 8:48 am (7.5 ft) and 9:05 pm (7.1 ft) and low tides at 4:33 am and 4:57 pm. Tide coefficient 105. Right now the tide is rising toward the high tide at 9:05 pm. The sun rises at 6:53 am and sets at 4:50 pm: 9 h 58 min of daylight. The moon is 92% illuminated (waning gibbous) and rises at 5:39 pm. Major solunar periods run from 12:30 am to 2:30 am and from 1:01 pm to 3:01 pm. The next spring tides arrive from October 26 to 28. The sea is slight, with 2.8 ft waves. There is no wind. Overcast, 52 °F.
Fishing in Broadstone today
Best time to fish
Solunar activity today: high- Low tide at 4:57 pm
- Minor period 5:09–6:09 pm (moonrise)
- Sunset at 4:50 pm, golden hour from 4:03 pm
- Rising pressure (+0.30 inHg in 24 h), light onshore wind (5 mph) and some swell (3.3 ft waves) to stir the water
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 105 (big spring tides)
- A minor period lines up with sunset
Your day at a glance
The best window, 4:00 pm to 5:20 pm, combines the 4:57 pm low tide, moonrise, sunset, a light onshore breeze and some swell, though with rising pressure. Also worth a try from 7:50 am to 9:50 am, with the 8:48 am high tide, moonset, a light onshore breeze and some swell, though with rising pressure.
Species with the most records nearby: European plaice, common sole, thornback ray and small-spotted catshark. October is one of the months when these are seen most: common sole and thornback ray. What you can catch
Beach day in Broadstone
Is it a beach day?
- Onshore breeze (11 mph)
- Low tide at 4:57 pm: more sand
- Cloudy (77% cloud cover)
- Feels like 57 °F: chilly for the beach
- Swim with care: 3.6 ft waves every 7 s; moderate rip current risk
- Water at 59 °F (very cold)
Today, hour by hour
- Swimming Use care · 3.6 ft
3.6 ft waves every 7 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.
- Water 59 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 11 mph
Onshore breeze (11 mph).
- Tide & sand 4:33 am
Low tide at 4:33 am and 4:57 pm: that's when there's the most sand. High tide at 8:48 am and 9:05 pm. Coefficient 105 (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 Broadstone
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Lake North Beach 3.2 mi · SW
- Parking
Excellent water quality 2025 season, Environment Agency
- Shipstal Beach 4.6 mi · S
- Canford Cliffs Beach 5.1 mi · SE
- Restrooms
- Parking
Excellent water quality 2025 season, Environment Agency
- Shore Road Beach 5.1 mi · SE
- RNLI lifeguards in season
- Restrooms
- Showers
- Parking
Excellent water quality 2025 season, Environment Agency
- Branksome Chine Beach 5.2 mi · SE
- RNLI lifeguards in season
- Restrooms
- Parking
Excellent water quality 2025 season, Environment Agency
- Sandbanks Beach 5.3 mi · SE
- RNLI lifeguards in season
- Restrooms
- Showers
- Parking
Excellent water quality 2025 season, Environment Agency
- Alum Chine Beach 5.4 mi · SE
- RNLI lifeguards in season
- Restrooms
- Showers
- Parking
Excellent water quality 2025 season, Environment Agency
- Bournemouth West Beach 5.7 mi · SE
- RNLI lifeguards in season
- Restrooms
- Showers
- Parking
Excellent water quality 2025 season, Environment Agency
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: Environment Agency. 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 Broadstone
Webcams provided by windy.com — add a webcam
Tides in Broadstone
Today's high and low tides
- ▼ Low tide 4:33 am 1.6 ft
- ▲ High tide 8:48 am 7.5 ft · coef. 105
- ▼ Low tide 4:57 pm 1.4 ft
- ▲ Next high tide 9:05 pm 7.1 ft · coef. 102
↑ Rising The tide is rising. 11 min to high tide at 9:05 pm.
Tide coefficient 105 for the 8:48 am high tide and 102 for the 9:05 pm high tide. Big spring tides. The water rises and falls 6.1 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 November 26 (7.6 ft) and the lowest, on July 16 (0.2 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 27 to 28 (coefficient 106, 6.1 ft range). The smallest, on October 18 (coefficient 29, 2.0 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Tide 5 | Tide 6 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Today, Wed 28 | 6:53 am · 4:50 pm | Low tide 4:33 am · 1.6 ft | High tide 8:48 am · 7.5 ft | Low tide 4:57 pm · 1.4 ft | High tide 9:05 pm · 7.1 ft | — | — | Coef. 105 | 92% | Major periods 12:30 am · 1:01 pm | High |
| Thu 29 | 6:54 am · 4:48 pm | Low tide 5:17 am · 1.8 ft | High tide 9:15 am · 7.4 ft | Low tide 5:42 pm · 1.5 ft | High tide 9:45 pm · 6.7 ft | — | — | Coef. 98 | 85% | Major periods 1:34 am · 2:06 pm | Medium |
| Fri 30 | 6:56 am · 4:47 pm | Low tide 6:03 am · 2.2 ft | High tide 9:53 am · 7.0 ft | Low tide 6:30 pm · 1.7 ft | High tide 10:42 pm · 6.2 ft | — | — | Coef. 84 | 76% | Major periods 2:38 am · 3:10 pm | Medium |
| Sat 31 | 6:58 am · 4:45 pm | Low tide 1:47 am · 5.5 ft | High tide 3:52 am · 6.4 ft | Low tide 6:52 am · 2.9 ft | High tide 10:40 am · 6.5 ft | Low tide 7:21 pm · 2.2 ft | — | Coef. 73 | 65% | Major periods 3:41 am · 4:11 pm | Medium |
| Sun 1 | 6:59 am · 4:43 pm | High tide 4:43 am · 6.7 ft | Low tide 7:46 am · 3.5 ft | High tide 11:42 am · 6.0 ft | Low tide 2:46 pm · 5.3 ft | High tide 4:58 pm · 6.2 ft | Low tide 8:18 pm · 2.7 ft | Coef. 60 | Last quarter | Major periods 4:40 am · 5:08 pm | Medium |
| Mon 2 | 7:01 am · 4:41 pm | High tide 5:34 am · 6.7 ft | Low tide 8:51 am · 4.1 ft | High tide 1:00 pm · 5.5 ft | Low tide 3:22 pm · 5.2 ft | High tide 5:49 pm · 6.1 ft | Low tide 9:37 pm · 3.1 ft | Coef. 53 | 43% | Major periods 5:34 am · 5:59 pm | Medium |
| Tue 3 | 7:03 am · 4:40 pm | High tide 6:29 am · 6.6 ft | Low tide 10:38 am · 4.3 ft | High tide 6:42 pm · 5.9 ft | Low tide 11:13 pm · 3.1 ft | — | — | Coef. 56 | 32% | Major periods 6:23 am · 6:47 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
Broadstone has no station of its own, so we use the tide at Bournemouth (Environment Agency), 6.0 mi away. On the open coast the difference is usually a few minutes and inches; inside estuaries, rivers and enclosed bays it can be much larger.
Station data attribution: This uses Environment Agency tide gauge data from the real-time data API (Beta): Bournemouth (E71924), https://environment.data.gov.uk/flood-monitoring/id/stations/E71924. 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 Broadstone
Sea stateSea state: slight
The waves you may find
- Most commonMost common1.4 ft
- Significant2.8 ft
- Highest expectedHighest5.6 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 5.6 ft. Before heading out, expect waves of up to 5.6 ft.
Wind on the coast and offshore
Offshore wind. The coast faces south and the wind blows from land out to sea: calm shore and clean waves, but watch the drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves ease over the next few days. The biggest waves arrive on Wednesday 28: 4.3 ft with a period of 8 s, from the west-southwest (moderate).
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 8:55 pm (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from Channel Coastal Observatory (CCO), National Network of Regional Coastal Monitoring Programmes (NNRCMP), via the E.U. Copernicus Marine Service. Generated using E.U. Copernicus Marine Service Information (doi:10.48670/moi-00036).
Diving in Broadstone today
Diving and snorkeling today
Likely visibility: fair- Tidal current running: mid-tide, the water is moving
- 2.3 ft swell at 9 s from the west-southwest: some surge on the bottom
- Light onshore wind (11 mph)
- 0.3 mph current toward the southeast, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 4:33 am (4:18–4:48 am), high tide 8:48 am (8:20–9:40 am), low tide 4:57 pm (4:42–5:12 pm) and high tide 9:05 pm (8:40–10:00 pm)
- Likely visibility: fair. Swell (up to 3.3 ft at 9 s) and rain (0.24 in) over the last few days have stirred up the water. Based on the last 24 hours of data.
- Water at 58.6 °F: a 7 mm wetsuit, with hood and booties.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 5:24 pm. Waning gibbous (92%), rising at 5:39 pm: a bright night.
Your diving day at a glance
The best window, 10:30 am to 11:30 am, combines light wind, weak current and the sun high, though with tidal 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
- Southampton 2.4 mi
- Mayflower 5.8 mi
- Surdelo 6.2 mi
- Iona 6.6 mi
- Michelle 7.1 mi
- Wreck 2.5 mi
- Poole Rocks Marine Conservation Zone 6.8 mi
- Studland Bay Marine Conservation Zone 7.3 mi
- Go Below Scuba Diving 1.2 mi
- Dorset Diving Services 2.3 mi
- Poole Diving 3.2 mi
- Cj Evans International Ltd. 7.4 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 Broadstone
Now in Broadstone
- Low / high
- 47 / 61 °F
- Rain
- 0.00 in · 0%
- Clouds
- 100%
- Humidity
- 90%
- Dew pointDew point
- 49 °F
- Visibility
- 13 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 28
- 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 (+0.01 inHg in 3 hours). Over the next 48 hours: +0.05 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 | Clear | Clear | Partly cloudy | Mainly clear | Overcast | Overcast | Overcast | Overcast |
| Temperature | 47° | 47° | 48° | 56° | 60° | 60° | 55° | 52° |
| Wind (mph) | 3 SW | 4 SW | 2 W | 8 WSW | 10 WSW | 10 WSW | 4 SW | 1 NNW |
| Gusts | 10 | 11 | 5 | 19 | 21 | 20 | 10 | 1 |
| Waves | 4.3 ft | 3.9 ft | 4.1 ft | 4.1 ft | 3.9 ft | 3.6 ft | 3.1 ft | 2.8 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 52° 1 NNW 2.8 ft
- 12:00 am 50° 2 N 2.4 ft
- 3:00 am 50° 2 NE 2.2 ft
- 6:00 am 46° 4 N 1.9 ft
- 9:00 am 49° 4 N 1.7 ft
- 12:00 pm 60° 6 SSE 1.7 ft
- 3:00 pm 59° 6 SE 1.7 ft
- 6:00 pm 56° 5 ESE 1.7 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 47 / 61 °F | 11 mph WSW | 4.3 ft | 8:48 am · 9:05 pm | |
| Thu 29 | 46 / 60 °F | 8 mph E | 2.4 ft | 9:15 am · 9:45 pm | |
| Fri 30 | 49 / 61 °F | 10 mph ENE | 2.3 ft | 9:53 am · 10:42 pm | |
| Sat 31 | 48 / 55 °F | 7 mph NE | 2.4 ft | 3:52 am · 10:40 am | |
| Sun 1 | 45 / 52 °F | 7 mph NNE | 1.7 ft | 4:43 am · 11:42 am · 4:58 pm | |
| Mon 2 | 46 / 54 °F | 11 mph NNE | 2.1 ft | 5:34 am · 1:00 pm · 5:49 pm | |
| Tue 3 | 46 / 55 °F | 12 mph NNE | 2.4 ft | 6:29 am · 6:42 pm | |
| Wed 4 | 46 / 53 °F | 10 mph NE | 3.7 ft | 7:31 am · 7:43 pm | |
| Thu 5 | 43 / 52 °F | 11 mph ENE | 3.8 ft | 8:50 am · 9:13 pm | |
| Fri 6 | 44 / 54 °F | 15 mph ENE | 2.4 ft | 9:59 am · 6:33 pm | |
| Sat 7 | 44 / 55 °F | 11 mph E | 5.9 ft | 7:00 am · 7:14 pm | |
| Sun 8 | 54 / 57 °F | 8 mph SSE | 2.8 ft | 7:36 am · 7:56 pm | |
| Mon 9 | 57 / 58 °F | 8 mph SSE | 3.3 ft | 8:14 am · 8:38 pm | |
| Tue 10 | 55 / 60 °F | 10 mph SW | 4.2 ft | 8:53 am · 9:20 pm |
- Thu 29 Light showers 46° / 60° 2.4 ft
- Fri 30 Partly cloudy 49° / 61° 2.3 ft
- Sat 31 Overcast 48° / 55° 2.4 ft
- Sun 1 Overcast 45° / 52° 1.7 ft
- Mon 2 Overcast 46° / 54° 2.1 ft
- Tue 3 Overcast 46° / 55° 2.4 ft
- Wed 4 Overcast 46° / 53° 3.7 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 They agree · high confidence for the next few days. See the models →
- Outlook Next few weeks, compared with normal: a bit warmer and normal rain. See the outlook →
- Normal Today, warmer than normal for late October (+3.7 °F; normal high: 57 °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 8:55 pm (local time).
The sun in Broadstone
Sunrise and sunset
- First light 5:40 am
- Full dark 6:03 pm
- Civil dawn 6:18 am
- Civil dusk 5:24 pm
- Solar noon 11:52 am (26° high)
- Daylight 9 h 58 min (−4 min)
- Evening golden hour 4:03 pm
- Full dark 6:03 pm
Golden hour and the day-night map
Today the sun is 92,359,726 mi away and looks 32′ 11″ across.
The moon in Broadstone
Moon phase and position
Today the moon is 226,451 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: high- 12:30–2:30 am Major · the moon passes overhead · high activity
- 1:01–3:01 pm Major · the moon passes underfoot · high activity
- 9:49–10:49 am Minor · moonset · medium activity
- 5:09–6:09 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 Broadstone
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Lake Pier 3.3 mi
- Jetty 3.2 mi
- Jetty 3.5 mi
- Fishermans Landing area 3.2 mi
- Boat ramp 2.4 mi
- Boat ramp 2.7 mi
- Boat ramp 3.0 mi
- Cobbs Quay Marina 2.4 mi
- Davis's Boatyard 2.5 mi
- Wessex angling 1.8 mi
- Poole Sea Angling Centre 3.1 mi
- CPL Petroleum 3.1 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
Very shallowVery shallow and flat: even 1.5 mi from shore the water is less than 16 ft deep.
From the shoreline (1.5 mi from Broadstone) out to sea, heading south.
How far from shore
- 16 ft deepnot within 1.5 mi
- 33 ft deepnot within 1.5 mi
- 66 ft deepnot within 1.5 mi
- 164 ft deepnot within 1.5 mi
For fishing, swimming and diving
- Shore fishing. About 8.9 ft of water 330 ft out: long casts help, and so does a rising tide, which brings fish closer in.
- Swimming. The water gets deeper little by little, but a few dozen yards out you can no longer stand.
- Diving. Shallow: the water doesn't reach 33 ft within 1.5 mi. For deeper dives, take a boat farther out.
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) 1.5 mi out. 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.
Tides near BroadstoneTides nearby
- Canford Heath1.2 mi
- Parkstone2.9 mi
- Poole3.0 mi
- Arne4.9 mi
- Bournemouth5.6 mi
- Wareham7.0 mi
- Boscombe7.0 mi
- Ridge7.0 mi
- Studland8.2 mi
- Christchurch9.4 mi
Broadstone at a glance
- Town or city of about 10,289 people. Coordinates: 50.757° N, 1.994° W.
- It is 5.6 mi northwest of Bournemouth, the main place in Bournemouth, Christchurch and Poole. The sun rises 1 min later and sets at the same time than in Bournemouth.
- The nearest tide station, Bournemouth, is 6.0 mi to the southeast.
- Its coast faces south.
Questions about BroadstoneQuestions
What time is high tide today in Broadstone?
Today in Broadstone there are high tides at 8:48 am (7.5 ft) and 9:05 pm (7.1 ft) and low tides at 4:33 am and 4:57 pm. Tide coefficient 105.
What time is sunset today in Broadstone?
At 4:50 pm. There is light until the end of civil twilight, at 5:24 pm.
What time is sunrise tomorrow in Broadstone?
At 6:54 am. First light comes at 5:41 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 12:30–2:30 am, Minor 9:49–10:49 am, Major 1:01–3:01 pm, Minor 5:09–6:09 pm. Today's activity is high.
What's the weather like today in Broadstone?
Overcast, from 47 °F to 61 °F, with calm and a 0% chance of rain.
How is the sea today in Broadstone?
Slight (Douglas 3): 2.8 ft waves with a period of 7.4 s from the southwest. The water is 58.8 °F.
When is the best time to visit Broadstone?
The best time to visit Broadstone is from July to August: highs of 71 °F, about 9 rainy days a month and 6 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: Bournemouth 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).