Cauville-sur-Mer tides today
- Tide now 8.3 ft ↓ falling · low 7:15 am (4.1 ft)
- Best time to fish 7:10–8:10 am good day · 8/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 1.1 ft · 59 °F smooth · 5.9 s from the west-northwest
- Wind · air 7 mph · 47 °F from the SE, gusts 9 · fog
- Sun 7:43 am–5:43 pm 9 h 59 min of daylight
- Moon 85% · 7:35 pm waning gibbous · rises at 7:35 pm
- Best time to dive 12:30–2:10 pm great day · 10/10
Today in Cauville-sur-Mer there are high tides at 12:53 am (25.6 ft) and 1:11 pm (25.5 ft) and low tides at 7:15 am and 7:37 pm. Tide coefficient 90. Right now the tide is falling toward the low tide at 7:15 am. The sun rises at 7:43 am and sets at 5:43 pm: 9 h 59 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 7:35 pm. Major solunar periods run from 2:25 am to 4:25 am and from 2:57 pm to 4:57 pm. The next spring tides arrive from November 9 to 11. The sea is smooth, with 1.1 ft waves. There's a light breeze from the southeast (7 mph). Fog, 47 °F.
Fishing in Cauville-sur-Mer today
Best time to fish
Solunar activity today: medium- Low tide at 7:15 am
- Sunrise at 7:43 am
- Steady pressure (30.39 inHg), light offshore wind (8 mph) and calm sea (0.9 ft waves)
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 90 (spring tides)
- A major period lines up with sunset
Your day at a glance
The best window, 7:10 am to 8:10 am, combines the 7:15 am low tide and sunrise. Also good from 12:10 pm to 12:50 pm, with the 1:11 pm high tide and moonset. Also good from 7:00 pm to 8:00 pm, with the 7:37 pm low tide and moonrise.
Species with the most records nearby: European plaice, small-spotted catshark, whiting and Atlantic horse mackerel. October is one of the months when these are seen most: small-spotted catshark and thornback ray. What you can catch
Beach day in Cauville-sur-Mer
Is it a beach day?
- Calm for swimming: 0.9 ft waves
- Fog
- Feels like 56 °F: chilly for the beach
- Light offshore wind (9 mph): it blows floats and inflatables out to sea
- Water at 59 °F (cold)
- High tide at 1:11 pm
Today, hour by hour
- Swimming Calm · 0.9 ft
0.9 ft waves: calm for swimming. Low rip current risk. Always follow the lifeguard's flags.
- Water 59 °F
Cold: ease in slowly.
- Sun & sunscreen UV 2 · SPF 15
Max UV 2 (low): SPF 15 sunscreen.
- Wind 9 mph
Offshore breeze (9 mph). Watch floats and inflatables: offshore wind carries them out to sea.
- Tide & sand 7:15 am
Low tide at 7:15 am and 7:37 pm: that's when there's the most sand. High tide at 12:53 am and 1:11 pm.
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 Cauville-sur-Mer
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Plage d'Antifer 3.4 mi · N
- Restrooms
- Showers
- Parking
Good water quality 2025 season, EEA
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). Bathing water quality: European Environment Agency (EEA), with data from the French Ministry of Health (baignades.sante.gouv.fr).
Webcams near Cauville-sur-Mer
Webcams provided by windy.com — add a webcam
Tides in Cauville-sur-Mer
Today's high and low tides
- ▲ High tide 12:53 am 25.6 ft · coef. 90
- ▼ Next low tide 7:15 am 4.1 ft
- ▲ High tide 1:11 pm 25.5 ft · coef. 88
- ▼ Low tide 7:37 pm 4.1 ft
↓ Falling The tide is falling. 2 h 6 min to low tide at 7:15 am.
Tide coefficient 90 for the 12:53 am high tide and 88 for the 1:11 pm high tide. Spring tides. The water rises and falls 21.6 ft between the highest high and the lowest low: an average 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 December 26 (26.5 ft) and the lowest, on August 14 (1.6 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 9 to 12 (coefficient 94, 23.4 ft range). The smallest, from October 19 to 20 (coefficient 32, 8.2 ft).
Tide and solunar table · this week
| Day | Sun | Tide 1 | Tide 2 | Tide 3 | Tide 4 | Coef. | Moon | Major periods | Activity |
|---|---|---|---|---|---|---|---|---|---|
| Today, Thu 29 | 7:43 am · 5:43 pm | High tide 12:53 am · 25.6 ft | Low tide 7:15 am · 4.1 ft | High tide 1:11 pm · 25.5 ft | Low tide 7:37 pm · 4.1 ft | Coef. 90 | 85% | Major periods 2:25 am · 2:57 pm | Medium |
| Fri 30 | 7:45 am · 5:41 pm | High tide 1:37 am · 24.9 ft | Low tide 7:54 am · 5.1 ft | High tide 1:50 pm · 24.7 ft | Low tide 8:17 pm · 4.9 ft | Coef. 84 | 76% | Major periods 3:29 am · 4:01 pm | Medium |
| Sat 31 | 7:46 am · 5:39 pm | High tide 2:19 am · 23.9 ft | Low tide 8:36 am · 6.4 ft | High tide 2:30 pm · 23.7 ft | Low tide 9:04 pm · 6.1 ft | Coef. 75 | 66% | Major periods 4:32 am · 5:02 pm | Medium |
| Sun 1 | 7:48 am · 5:37 pm | High tide 3:06 am · 22.7 ft | Low tide 9:28 am · 7.8 ft | High tide 3:20 pm · 22.5 ft | Low tide 10:05 pm · 7.3 ft | Coef. 65 | Last quarter | Major periods 5:31 am · 5:59 pm | Medium |
| Mon 2 | 7:50 am · 5:36 pm | High tide 4:08 am · 21.6 ft | Low tide 10:38 am · 8.9 ft | High tide 4:33 pm · 21.5 ft | Low tide 11:24 pm · 8.0 ft | Coef. 55 | 43% | Major periods 6:25 am · 6:50 pm | Medium |
| Tue 3 | 7:51 am · 5:34 pm | High tide 5:41 am · 21.2 ft | Low tide 12:05 pm · 9.0 ft | High tide 6:12 pm · 21.4 ft | — | Coef. 52 | 33% | Major periods 7:15 am · 7:38 pm | Medium |
| Wed 4 | 7:53 am · 5:32 pm | Low tide 12:50 am · 7.5 ft | High tide 7:12 am · 21.9 ft | Low tide 1:27 pm · 8.0 ft | High tide 7:36 pm · 22.3 ft | Coef. 61 | 23% | Major periods 8:01 am · 8:23 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 Port d'Antifer station (REFMAR (HAROPA PORT – Le Havre)), 3.6 mi from Cauville-sur-Mer. Times and heights are its predictions.
Station data attribution: REFMAR, ANTIFER_HAROPA_LH (HAROPA PORT – Le Havre), http://dx.doi.org/10.17183/REFMAR#6368, https://data.shom.fr/donnees/refmar/6368: sea level observations of 2025-09-30 to 2026-10-01. Licence Ouverte v2.0 (Etalab, https://www.etalab.gouv.fr/licence-ouverte-open-licence/). Modified: harmonic constants fitted by TidePlanet from these observations.
The sea at Cauville-sur-Mer
Sea stateSea state: smooth
The waves you may find
- Most commonMost common0.6 ft
- Significant1.1 ft
- Highest expectedHighest2.3 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 2.3 ft. Before heading out, expect waves of up to 2.3 ft.
Wind on the coast and offshore
Offshore wind. The coast faces west 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 build over the next few days. The biggest waves arrive on Monday 2: 3.8 ft with a period of 5 s, from the north-northeast (slight).
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 5:09 am (local time).
Nearest buoy
This is a real measurement of the sea, not a forecast. Data from Cerema, Le Havre Large Seaport, via the E.U. Copernicus Marine Service. Generated using E.U. Copernicus Marine Service Information (doi:10.48670/moi-00036).
Surf in Cauville-sur-Mer today
Surf today
Flat- Barely any waves (0.9 ft sets): flat
- Light offshore wind (8 mph): it holds up and grooms the waves
- First or last light of the day
- Rising tide (high tide at 1:11 pm)
It’s flat today: almost no waves reach this coast.
- Light: First light 7:10 am · sunrise 7:43 am · sunset 5:43 pm · last light 6:16 pm
- Tide: high 12:53 am (25.6 ft), low 7:15 am (4.1 ft), high 1:11 pm (25.5 ft) and low 7:37 pm (4.1 ft). Every break has its own tide: some work at low tide and others at high tide. The tide doesn’t change the score here.
- Water at 58.8 °F: a 4/3 fullsuit (booties if you run cold).
- Energy: 2 kJ · Low power
Today’s surf at a glance
The best window, 7:10 am to 11:00 am, has light offshore wind, though with barely any waves.
An estimate for this stretch of coast, not for a specific break: every beach or reef works its own way (its tide, bottom and angle). Check it when you get there.
Follow the flags and the lifeguards, and don’t paddle out if the surf is above your level: this score is a guide, not a substitute for what you see when you get there.
Diving in Cauville-sur-Mer today
Diving and snorkeling today
Likely visibility: good- Slack water around high tide (1:11 pm): little current from 11:50 am to 1:40 pm
- 0.5 ft swell at 8 s from the west: barely any surge
- Light offshore wind (7 mph)
- 0.5 mph current toward the north-northeast, weak (model)
- Sun high: more light underwater
- Slack water today: high tide 12:53 am (11:30 pm–1:20 am), low tide 7:15 am (6:40–7:30 am), high tide 1:11 pm (11:50 am–1:40 pm) and low tide 7:37 pm (7:00–8:00 pm)
- Likely visibility: good. Swell (up to 3.3 ft at 5 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
- Water at 58.8 °F: a 7 mm wetsuit, with hood and booties.
- Snorkeling: good, calm sea and light wind.
- Night dive: dark from 6:16 pm. Waning gibbous (85%), rising at 7:35 pm: a bright night.
Your diving day at a glance
The best window, 12:30 pm to 2:10 pm, combines slack water at high tide, little swell, light wind, weak current and the sun high.
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
- Albertville 2.7 mi
- Greif 2.8 mi
- Hippolyte Worms 3.0 mi
- John 3.1 mi
- Post Renum 3.5 mi
- Comrades 4.1 mi
- Lee S. Overmann 4.1 mi
- Wreck 1.2 mi
- Wreck 3.2 mi
- Coelacanthe Plongée 6.1 mi
- Association Subaquatique Baie De Seine 6.1 mi
- Emerald Water Club Chasse Sous-marine En Normandie 6.2 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 Cauville-sur-Mer
Now in Cauville-sur-Mer
- Low / high
- 47 / 59 °F
- Rain
- 0.00 in · 0%
- Clouds
- 100%
- Humidity
- 90%
- Dew pointDew point
- 44 °F
- Visibility
- 6.1 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 40
- 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). It barely changes over the next 48 hours. 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 | Fog | Fog | Fog | Fog | Partly cloudy | Mainly clear | Mainly clear | Clear |
| Temperature | 52° | 48° | 47° | 48° | 57° | 59° | 54° | 50° |
| Wind (mph) | 5 SSE | 6 SE | 7 SE | 6 ESE | 6 ESE | 9 E | 8 E | 11 E |
| Gusts | 6 | 9 | 8 | 10 | 10 | 15 | 14 | 17 |
| Waves | 1.4 ft | 1.2 ft | 1.0 ft | 0.9 ft | 0.8 ft | 0.7 ft | 0.7 ft | 0.7 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 |
- 6:00 am 47° 7 SE 1.0 ft
- 9:00 am 48° 6 ESE 0.9 ft
- 12:00 pm 57° 6 ESE 0.8 ft
- 3:00 pm 59° 9 E 0.7 ft
- 6:00 pm 54° 8 E 0.7 ft
- 9:00 pm 50° 11 E 0.7 ft
- 12:00 am 47° 11 ESE 0.6 ft
- 3:00 am 46° 11 ESE 0.5 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 47 / 59 °F | 13 mph ESE | 1.4 ft | 12:53 am · 1:11 pm | |
| Fri 30 | 44 / 58 °F | 14 mph E | 1.1 ft | 1:37 am · 1:50 pm | |
| Sat 31 | 45 / 58 °F | 14 mph E | 1.0 ft | 2:19 am · 2:30 pm | |
| Sun 1 | 43 / 53 °F | 8 mph ENE | 1.5 ft | 3:06 am · 3:20 pm | |
| Mon 2 | 49 / 57 °F | 18 mph NNE | 3.8 ft | 4:08 am · 4:33 pm | |
| Tue 3 | 47 / 53 °F | 14 mph NE | 3.4 ft | 5:41 am · 6:12 pm | |
| Wed 4 | 41 / 51 °F | 11 mph ENE | 2.6 ft | 7:12 am · 7:36 pm | |
| Thu 5 | 39 / 49 °F | 9 mph E | 1.8 ft | 8:19 am · 8:39 pm | |
| Fri 6 | 39 / 50 °F | 10 mph E | 1.6 ft | 9:11 am · 9:28 pm | |
| Sat 7 | 38 / 52 °F | 10 mph ESE | 1.8 ft | 9:52 am · 10:08 pm | |
| Sun 8 | 46 / 57 °F | 8 mph SE | 0.9 ft | 10:28 am · 10:44 pm | |
| Mon 9 | 52 / 57 °F | 11 mph SSE | 1.6 ft | 10:59 am · 11:16 pm | |
| Tue 10 | 56 / 61 °F | 12 mph SSW | 2.4 ft | 11:28 am · 11:47 pm | |
| Wed 11 | 53 / 57 °F | 16 mph SW | 3.9 ft | 11:57 am |
- Fri 30 Mainly clear 44° / 58° 1.1 ft
- Sat 31 Mainly clear 45° / 58° 1.0 ft
- Sun 1 Overcast 43° / 53° 1.5 ft
- Mon 2 Light drizzle 49° / 57° 3.8 ft
- Tue 3 Light drizzle 47° / 53° 3.4 ft
- Wed 4 Clear sky 41° / 51° 2.6 ft
- Thu 5 Clear sky 39° / 49° 1.8 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.
- Normal Today, warmer than normal for late October (+1.9 °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 5:09 am (local time).
The sun in Cauville-sur-Mer
Sunrise and sunset
- First light 6:32 am
- Full dark 6:54 pm
- Civil dawn 7:10 am
- Civil dusk 6:16 pm
- Solar noon 12:43 pm (27° high)
- Daylight 9 h 59 min (−3 min)
- Evening golden hour 4:56 pm
- Full dark 6:54 pm
Golden hour and the day-night map
Today the sun is 92,335,559 mi away and looks 32′ 11″ across.
The moon in Cauville-sur-Mer
Moon phase and position
Today the moon is 226,618 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: medium- 2:25–4:25 am Major · the moon passes overhead · high activity
- 2:57–4:57 pm Major · the moon passes underfoot · high activity
- 11:49 am–12:49 pm Minor · moonset · medium activity
- 7:05–8:05 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 · 9:29 pmNov 1 in 3 days
- New moon Mon, Nov 9 · 8:03 amNov 9 in 11 days
- First quarter Tue, Nov 17 · 12:48 pmNov 17 in 19 days
- Full moon Tue, Nov 24 · 3:54 pmNov 24 in 26 days
Next perigee (the moon at its closest to Earth): November 25, 223,281 mi away.
Where to fish in Cauville-sur-Mer
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Quai François Mazeline 8.7 mi
- Poste 2 8.7 mi
- Poste 1 8.8 mi
- Digue Charles Olsen 7.8 mi
- Digue Nord 7.9 mi
- Digue Augustin Normand 8.0 mi
- Digue Sud 8.4 mi
- Boat ramp 3.5 mi
- Boat ramp 3.6 mi
- Boat ramp 7.5 mi
- Port du Havre-Antifer 4.1 mi
- Grand Port Maritime du Havre 8.2 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
Gentle slopeThe bottom slopes gently: 16 ft deep 0.3 mi from shore and 33 ft at 0.45 mi.
From the shoreline (0.5 mi from Cauville-sur-Mer) out to sea, heading west.
How far from shore
- 16 ft deep0.3 mi
- 33 ft deep0.45 mi
- 66 ft deep2.5 mi
- 164 ft deepnot within 3.1 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 0.3 mi): cast far from the beach and fish the high tide, when there is more water close in.
- Swimming. A very gentle way in with plenty of shallow water, good for kids. At low tide the water can be far out.
- Diving. 33 ft deep 0.45 mi from shore; 66 ft is far out (2.5 mi): for deeper dives, go by boat.
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
Harbor Approach 4.2 mi north
- Light
- Light that goes dark once every 4 s; white, red or green depending on where you see it from (directional light) · Dir.Oc WRG 4s
- Range
- 15 nautical miles (17 mi)
- Light height
- 79 ft above sea level
- Tower height
- 66 ft
Other lighthouses nearby: Cap d'Antifer Lighthouse (5.9 mi north).
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Sources and licenses
Tides near Cauville-sur-MerTides nearby
- Octeville-sur-Mer3.2 mi
- Saint-Jouin-Bruneval3.3 mi
- Sainte-Adresse6.7 mi
- Le Havre7.4 mi
- Étretat8.0 mi
- Yport13 mi
- Honfleur13 mi
- Saint-Léonard14 mi
- La Rivière-Saint-Sauveur15 mi
- Équemauville15 mi
Cauville-sur-Mer at a glance
- Town or city of about 1,360 people. Coordinates: 49.600° N, 0.133° E.
- It is 7.4 mi north of Le Havre, the main place in Normandy. The sun rises at the same time and sets at the same time than in Le Havre.
- The nearest tide station, Port d'Antifer, is 3.6 mi to the north.
- Its coast faces west.
- Beaches and harbors nearby: Port du Havre-Antifer (4.1 mi).
Questions about Cauville-sur-MerQuestions
What time is high tide today in Cauville-sur-Mer?
Today in Cauville-sur-Mer there are high tides at 12:53 am (25.6 ft) and 1:11 pm (25.5 ft) and low tides at 7:15 am and 7:37 pm. Tide coefficient 90.
What time is sunset today in Cauville-sur-Mer?
At 5:43 pm. There is light until the end of civil twilight, at 6:16 pm.
What time is sunrise tomorrow in Cauville-sur-Mer?
At 7:45 am. First light comes at 6:34 am.
What phase is the moon today?
Waning gibbous, 85% illuminated. New moon on Mon, Nov 9 · 8:03 am.
When are the next spring tides?
From November 9 to 11.
What are today's solunar periods?
Major 2:25–4:25 am, Minor 11:49 am–12:49 pm, Major 2:57–4:57 pm, Minor 7:05–8:05 pm. Today's activity is medium.
What's the weather like today in Cauville-sur-Mer?
Fog, from 47 °F to 59 °F, with a light breeze from the southeast (7 mph) and a 0% chance of rain.
How is the sea today in Cauville-sur-Mer?
Smooth (Douglas 2): 1.1 ft waves with a period of 5.9 s from the west-northwest. The water is 59.0 °F.
When is the best time to visit Cauville-sur-Mer?
The best time to visit Cauville-sur-Mer is from July to August: highs of 68 °F to 70 °F, about 8 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: Port d'Antifer tide gauge (REFMAR, HAROPA PORT – Le Havre), doi:10.17183/REFMAR#6368, licensed Licence Ouverte 2.0; constants fitted by TidePlanet from its readings. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).