Pordic tides today
- Tide now 14.1 ft ↓ falling · low 3:00 am (5.0 ft)
- Best time to fish 3:10–4:20 pm good day · 7/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 1.1 ft · 59 °F smooth · 8.6 s from the west-northwest
- Wind · air 4 mph · 44 °F from the S, gusts 4 · partly cloudy
- Sun 7:53 am–5:57 pm 10 h 4 min of daylight
- Moon 85% · 7:54 pm waning gibbous · rises at 7:54 pm
- Best time to dive 2:30–4:00 pm great day · 10/10
Today in Pordic there are high tides at 8:37 am (37.1 ft) and 9:02 pm (35.8 ft) and low tides at 3:00 am and 3:23 pm. Tide coefficient 94. Right now the tide is falling toward the low tide at 3:00 am. The sun rises at 7:53 am and sets at 5:57 pm: 10 h 4 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 7:54 pm. Major solunar periods run from 2:37 am to 4:37 am and from 3:09 pm to 5:09 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 south (4 mph). Partly cloudy, 44 °F.
Fishing in Pordic today
Best time to fish
Solunar activity today: medium- Low tide at 3:23 pm
- Major period 3:09–5:09 pm
- Steady pressure (30.30 inHg), light cross-shore wind (8 mph) and calm sea (0.9 ft waves)
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 94 (spring tides)
Your day at a glance
The best window, 3:10 pm to 4:20 pm, combines the 3:23 pm low tide and a major period. Also good from 7:40 am to 8:40 am, with the 8:37 am high tide and sunrise. Also good from 2:40 am to 4:00 am, with the 3:00 am low tide and a major period.
Species with the most records nearby: small-spotted catshark, common cuttlefish, black seabream and ballan wrasse. October is one of the months when these are seen most: common cuttlefish and ballan wrasse. What you can catch
Beach day in Pordic
Is it a beach day?
- Cross-shore breeze (10 mph)
- Calm for swimming: 0.9 ft waves
- Low tide at 3:23 pm: more sand
- Cloudy (100% cloud cover)
- Feels like 54 °F: chilly for the beach
- Water at 58 °F (very cold)
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 58 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 2 · SPF 15
Max UV 2 (low): SPF 15 sunscreen.
- Wind 10 mph
Cross-shore breeze (10 mph).
- Tide & sand 3:00 am
Low tide at 3:00 am and 3:23 pm: that's when there's the most sand. High tide at 8:37 am and 9:02 pm. Coefficient 94 (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 Pordic
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Plage du petit havre 1.6 mi · NE
- Restrooms
- Parking
Excellent water quality 2025 season, EEA
- Plage de la Banche 1.9 mi · N
- Restrooms
- Parking
Good water quality 2025 season, EEA
- Plage du Barillet 2.0 mi · E
- Parking
- Plage de Tournemine 2.2 mi · E
- Restrooms
- Parking
Good water quality 2025 season, EEA
- Plage de l'Avant port 2.3 mi · N
- Lifeguard
- Restrooms
- Showers
- Parking
Excellent water quality 2025 season, EEA
- Plage du Corps de Garde 3.0 mi · N
Excellent water quality 2025 season, EEA
- Plage des Rosaires 3.0 mi · E
- Restrooms
- Parking
Excellent water quality 2025 season, EEA
- Plage des Godelins 3.7 mi · N
- Lifeguard
- Parking
Excellent 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 Pordic
Webcams provided by windy.com — add a webcam
Tides in Pordic
Today's high and low tides
- ▼ Next low tide 3:00 am 5.0 ft
- ▲ High tide 8:37 am 37.1 ft · coef. 94
- ▼ Low tide 3:23 pm 5.4 ft
- ▲ High tide 9:02 pm 35.8 ft · coef. 89
↓ Falling The tide is falling. 2 h 28 min to low tide at 3:00 am.
Tide coefficient 94 for the 8:37 am high tide and 89 for the 9:02 pm high tide. Spring tides. The water rises and falls 32.1 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 March 21 (38.4 ft) and the lowest, on March 20 (2.2 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 100, 33.9 ft range). The smallest, on October 20 (coefficient 26, 9.2 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 | 7:53 am · 5:57 pm | Low tide 3:00 am · 5.0 ft | High tide 8:37 am · 37.1 ft | Low tide 3:23 pm · 5.4 ft | High tide 9:02 pm · 35.8 ft | Coef. 94 | 85% | Major periods 2:37 am · 3:09 pm | Medium |
| Fri 30 | 7:54 am · 5:55 pm | Low tide 3:43 am · 6.7 ft | High tide 9:18 am · 35.5 ft | Low tide 4:09 pm · 7.1 ft | High tide 9:46 pm · 33.6 ft | Coef. 84 | 76% | Major periods 3:42 am · 4:14 pm | Medium |
| Sat 31 | 7:56 am · 5:53 pm | Low tide 4:29 am · 9.0 ft | High tide 10:04 am · 33.2 ft | Low tide 4:59 pm · 9.3 ft | High tide 10:37 pm · 31.0 ft | Coef. 71 | 66% | Major periods 4:45 am · 5:15 pm | Medium |
| Sun 1 | 7:57 am · 5:52 pm | Low tide 5:22 am · 11.3 ft | High tide 10:59 am · 30.8 ft | Low tide 5:59 pm · 11.4 ft | High tide 11:44 pm · 28.6 ft | Coef. 57 | Last quarter | Major periods 5:43 am · 6:11 pm | Medium |
| Mon 2 | 7:59 am · 5:50 pm | Low tide 6:28 am · 13.2 ft | High tide 12:16 pm · 28.8 ft | Low tide 7:14 pm · 12.6 ft | — | Coef. 47 | 43% | Major periods 6:37 am · 7:03 pm | Medium |
| Tue 3 | 8:01 am · 5:48 pm | High tide 1:15 am · 27.5 ft | Low tide 7:50 am · 13.7 ft | High tide 1:51 pm · 28.5 ft | Low tide 8:39 pm · 12.2 ft | Coef. 46 | 33% | Major periods 7:27 am · 7:50 pm | Medium |
| Wed 4 | 8:02 am · 5:47 pm | High tide 2:44 am · 28.4 ft | Low tide 9:13 am · 12.4 ft | High tide 3:11 pm · 29.9 ft | Low tide 9:52 pm · 10.6 ft | Coef. 55 | 23% | Major periods 8:13 am · 8:35 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
Pordic has no station of its own, so we use the tide at Saint-Quay-Portrieux (TICON-4), 5.3 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: Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data
The sea at Pordic
Sea stateSea state: smooth
The waves you may find
- Most commonMost common0.6 ft
- Significant1.1 ft
- Highest expectedHighest2.2 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 2.2 ft. Before heading out, expect waves of up to 2.2 ft.
Wind on the coast and offshore
Cross-offshore wind. The coast faces northeast and the wind comes off the land at an angle: calmer water near the shore, and bait and boats drift out to sea.
Wave height, next 7 daysWaves, next 7 days
Waves build over the next few days. The biggest waves arrive on Tuesday 3: 3.8 ft with a period of 5 s, from the northeast (slight).
Water temperature
Water temperature →Water temperature changes how fish behave: in very cold or very warm water they feed less. The water cools over the next few days: about 56.8 °F by Wednesday 4.
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 12:32 am (local time).
Surf in Pordic today
Surf today
Flat- Barely any waves (0.7 ft sets): flat
- Almost no wind (3 mph): glassy water
- First or last light of the day
- Rising tide (high tide at 8:37 am)
It’s flat today: almost no waves reach this coast.
- Light: First light 7:20 am · sunrise 7:53 am · sunset 5:57 pm · last light 6:29 pm
- Tide: low 3:00 am (5.0 ft), high 8:37 am (37.1 ft), low 3:23 pm (5.4 ft) and high 9:02 pm (35.8 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 58.5 °F: a 4/3 fullsuit (booties if you run cold).
- Energy: 7 kJ · Low power
Today’s surf at a glance
The best window, 7:20 am to 11:00 am, has glassy water, 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 Pordic today
Diving and snorkeling today
Likely visibility: good- Slack water around low tide (3:23 pm): little current from 3:00 pm to 3:40 pm
- 0.6 ft swell at 9 s from the west-northwest: barely any surge
- Light cross-shore wind (9 mph)
- 0.2 mph current toward the north-northwest, weak (model)
- Sun high: more light underwater
- Slack water today: low tide 3:00 am (2:40–3:20 am), high tide 8:37 am (8:20–9:00 am), low tide 3:23 pm (3:00–3:40 pm) and high tide 9:02 pm (8:40–9:20 pm)
- Likely visibility: good. The sea has been calm and there's been little rain. Based on the last 24 hours of data.
- Water at 58.5 °F: a 7 mm wetsuit, with hood and booties.
- Snorkeling: good, calm sea and light wind.
- Night dive: dark from 6:29 pm. Waning gibbous (85%), rising at 7:54 pm: a bright night.
Your diving day at a glance
The best window, 2:30 pm to 4:00 pm, combines slack water at low tide, little swell, light wind, weak current and the sun high. Also good from 8:00 am to 9:20 am, with slack water at high tide, little swell, light wind and weak 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
- Comme Tu Pourras 4.2 mi
- Saint Yves 9.0 mi
- Molene 11 mi
- Edward Ernest 11 mi
- Saint Kilda 11 mi
- Forsward 12 mi
- Lagadu 12 mi
- Armor Plongée 5.4 mi
- Saint-Brieuc Plongée 7.2 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 Pordic
Now in Pordic
- Low / high
- 43 / 58 °F
- Rain
- 0.00 in · 0%
- Clouds
- 65%
- Humidity
- 91%
- Dew pointDew point
- 42 °F
- Visibility
- 7.0 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). Over the next 48 hours: −0.03 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 | Partly cloudy |
| Temperature | 45° | 44° | 44° | 45° | 54° | 58° | 55° | 50° |
| Wind (mph) | 3 S | 3 SW | 2 SW | 4 SSE | 9 SE | 9 ESE | 6 E | 8 ESE |
| Gusts | 4 | 3 | 3 | 5 | 14 | 17 | 11 | 13 |
| Waves | 1.1 ft | 1.0 ft | 0.9 ft | 0.8 ft | 0.8 ft | 0.9 ft | 0.9 ft | 0.9 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 |
- 12:00 am 45° 3 S 1.1 ft
- 3:00 am 44° 3 SW 1.0 ft
- 6:00 am 44° 2 SW 0.9 ft
- 9:00 am 45° 4 SSE 0.8 ft
- 12:00 pm 54° 9 SE 0.8 ft
- 3:00 pm 58° 9 ESE 0.9 ft
- 6:00 pm 55° 6 E 0.9 ft
- 9:00 pm 50° 8 ESE 0.9 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 29 | 43 / 58 °F | 10 mph SE | 1.1 ft | 8:37 am · 9:02 pm | |
| Fri 30 | 38 / 57 °F | 9 mph E | 1.4 ft | 9:18 am · 9:46 pm | |
| Sat 31 | 44 / 55 °F | 8 mph E | 1.8 ft | 10:04 am · 10:37 pm | |
| Sun 1 | 46 / 56 °F | 11 mph NE | 2.8 ft | 10:59 am · 11:44 pm | |
| Mon 2 | 48 / 56 °F | 14 mph NE | 3.7 ft | 12:16 pm | |
| Tue 3 | 52 / 54 °F | 13 mph NE | 3.8 ft | 1:15 am · 1:51 pm | |
| Wed 4 | 44 / 53 °F | 11 mph ENE | 3.5 ft | 2:44 am · 3:11 pm | |
| Thu 5 | 39 / 49 °F | 7 mph E | 2.8 ft | 3:51 am · 4:11 pm | |
| Fri 6 | 38 / 51 °F | 6 mph ESE | 1.6 ft | 4:42 am · 5:00 pm | |
| Sat 7 | 43 / 58 °F | 10 mph SSE | 2.5 ft | 5:25 am · 5:42 pm | |
| Sun 8 | 52 / 58 °F | 11 mph S | 1.4 ft | 6:04 am · 6:21 pm | |
| Mon 9 | 56 / 59 °F | 12 mph S | 1.6 ft | 6:41 am · 6:58 pm | |
| Tue 10 | 56 / 64 °F | 11 mph SSW | 1.2 ft | 7:16 am · 7:32 pm | |
| Wed 11 | 53 / 59 °F | 13 mph SW | 2.8 ft | 7:48 am · 8:04 pm |
- Fri 30 Overcast 38° / 57° 1.4 ft
- Sat 31 Overcast 44° / 55° 1.8 ft
- Sun 1 Overcast 46° / 56° 2.8 ft
- Mon 2 Light drizzle 48° / 56° 3.7 ft
- Tue 3 Drizzle 52° / 54° 3.8 ft
- Wed 4 Clear sky 44° / 53° 3.5 ft
- Thu 5 Clear sky 39° / 49° 2.8 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.
- The models They agree · high confidence for the next few days. See the models →
- Outlook The next few weeks look normal for the time of year. See the outlook →
- Normal Today, normal highs for late October (58 °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 12:32 am (local time).
The sun in Pordic
Sunrise and sunset
- First light 6:43 am
- Full dark 7:06 pm
- Civil dawn 7:20 am
- Civil dusk 6:29 pm
- Solar noon 12:55 pm (28° high)
- Daylight 10 h 4 min (−3 min)
- Evening golden hour 5:11 pm
- Full dark 7:06 pm
Golden hour and the day-night map
Today the sun is 92,335,361 mi away and looks 32′ 11″ across.
The moon in Pordic
Moon phase and position
Today the moon is 226,618 mi away and looks 32′ 45″ across.
Solunar periods
Today's activity: medium- 2:37–4:37 am Major · the moon passes overhead · high activity
- 3:09–5:09 pm Major · the moon passes underfoot · high activity
- 11:55 am–12:55 pm Minor · moonset · medium activity
- 7:24–8:24 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 Pordic
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Boat ramp 1.8 mi
- Cale de la Cocotte 2.1 mi
- Boat ramp 2.1 mi
- Cale de la Guitoune 2.2 mi
- Boat ramp 2.3 mi
- Boat ramp 4.3 mi
- Cale du Grand Léjon 5.1 mi
- Marina de Binic 2.1 mi
- Port du Légué 4.6 mi
- Port du Portrieux 5.2 mi
- Port d'Armor 5.3 mi
- Armor Chasse Pêche 3.9 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
Shallow, gradualShallow, gradual bottom: you need to go 3 mi out for 33 ft of water.
From the shoreline (1.4 mi from Pordic) out to sea, heading northeast.
How far from shore
- 16 ft deep2.3 mi
- 33 ft deep3 mi
- 66 ft deepnot within 3.1 mi
- 164 ft deepnot within 3.1 mi
For fishing, swimming and diving
- Shore fishing. Shallow, gradual bottom (16 ft at 2.3 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. Shallow near shore: you only reach 33 ft at 3 mi. For dives deeper than 33 ft, 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
Phare du Légué 5.1 mi southeast
- Light
- Very quick green flashes (about 120 a minute) · VQ G
- Range
- 8 nautical miles (9.2 mi)
- Light height
- 43 ft above sea level
- Tower height
- 46 ft
- Built
- 1857
Other lighthouses nearby: Fanal de Portrieux (5.1 mi north).
Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses
Tides near PordicTides nearby
- Binic2.4 mi
- Plérin3.3 mi
- Étables-sur-Mer4.4 mi
- Saint-Brieuc4.5 mi
- Saint-Quay-Portrieux5.6 mi
- Langueux6.9 mi
- Hillion7.9 mi
- Yffiniac8.7 mi
- Pléneuf-Val-André12 mi
- Saint-Alban13 mi
Pordic at a glance
- Town or city of about 5,441 people. Coordinates: 48.571° N, 2.817° W.
- It is 77 mi east of Brest, the main place in Brittany. The sun rises 6 min earlier and sets 7 min earlier than in Brest.
- The nearest tide station, Saint-Quay-Portrieux, is 5.3 mi to the north.
- Its coast faces northeast.
- Beaches and harbors nearby: Plage des Rosaires (2.9 mi), Port de Plaisance de Saint Brieuc - Le Légué (4.5 mi).
Questions about PordicQuestions
What time is high tide today in Pordic?
Today in Pordic there are high tides at 8:37 am (37.1 ft) and 9:02 pm (35.8 ft) and low tides at 3:00 am and 3:23 pm. Tide coefficient 94.
What time is sunset today in Pordic?
At 5:57 pm. There is light until the end of civil twilight, at 6:29 pm.
What time is sunrise tomorrow in Pordic?
At 7:54 am. First light comes at 6:45 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 2:37–4:37 am, Minor 11:55 am–12:55 pm, Major 3:09–5:09 pm, Minor 7:24–8:24 pm. Today's activity is medium.
What's the weather like today in Pordic?
Overcast, from 43 °F to 58 °F, with a light breeze from the south (4 mph) and a 0% chance of rain.
How is the sea today in Pordic?
Smooth (Douglas 2): 1.1 ft waves with a period of 8.6 s from the west-northwest. The water is 58.6 °F.
When is the best time to visit Pordic?
The best time to visit Pordic is from July to August: highs of 71 °F, about 7 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: Saint-Quay-Portrieux station, with constants from TICON-4 (Hart-Davis, Dettmering and Seitz, 2025, SEANOE), licensed CC BY 4.0, via Slackwater database (changes). Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).