Derrybeg tides today
- Tide now 8.1 ft ↓ falling · low 12:59 am (2.0 ft)
- Best time tomorrow 12:30–1:10 pm average day · 6/10
- Beach day Not today Not a beach day · 0/10
- Waves · water 9.3 ft · 56 °F rough · 9.8 s from the west
- Wind · air 10 mph · 54 °F from the S, gusts 16 · overcast
- Surf tomorrow 3.9–6.0 ft Good day · 7/10 · 1:00–5:00 pm
- Sun 7:29 am–5:04 pm 9 h 35 min of daylight
- Moon 92% · 5:32 pm waning gibbous · rises at 5:32 pm
Today in Derrybeg there are high tides at 6:37 am (13.1 ft) and 6:58 pm (13.1 ft) and low tides at 12:20 am and 12:41 pm. Tide coefficient 99. Right now the tide is falling toward the low tide at 12:59 am. The sun rises at 7:29 am and sets at 5:04 pm: 9 h 35 min of daylight. The moon is 92% illuminated (waning gibbous) and rises at 5:32 pm. Major solunar periods run from 12:56 am to 2:56 am and from 1:28 pm to 3:28 pm. The next spring tides arrive from October 26 to 28. The sea is rough, with 9.3 ft waves. There's a gentle breeze from the south (10 mph). Overcast, 54 °F.
Fishing in Derrybeg today
Best time to fish
Solunar activity today: high- High tide at 6:37 am, coefficient 99
- Sunrise at 7:29 am
- Rising pressure (+0.70 inHg in 24 h), moderate onshore wind (17 mph) and very rough sea: 14 ft waves
- Waning gibbous: a bit more activity than at the quarters
- Highest tide coefficient today: 99 (spring tides)
- A minor period lines up with sunset
Bad weather during the best window: strong wind or big waves. If you go out, be very careful and stay off rocks and jetties.
Your day at a glance
The best window, 6:50 am to 7:40 am, combines the 6:37 am high tide and sunrise, though with rising pressure, moderate wind and very rough seas. Also worth a try from 11:40 am to 1:40 pm, with the 12:41 pm low tide, moonset and a major period, though with rising pressure, moderate wind and very rough seas. Also worth a try from 5:00 pm to 5:40 pm, with moonrise and sunset, though with rising pressure and rough seas.
Species with the most records nearby: European plaice, small-spotted catshark, whiting and Atlantic mackerel. October is one of the months when these are seen most: small-spotted catshark. What you can catch
Beach day in Derrybeg
Is it a beach day?
- Low tide at 12:41 pm: more sand
- Cloudy (89% cloud cover)
- Feels like 51 °F: chilly for the beach
- Rain (0.02 in)
- Moderate onshore wind (16 mph): choppy water
- Dangerous for swimming: 13 ft waves every 11 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 · 13 ft
13 ft waves every 11 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 55 °F
Very cold: ease in and keep swims short.
- Sun & sunscreen UV 1 · SPF 15
Max UV 1 (low): SPF 15 sunscreen.
- Wind 16 mph
Moderate onshore wind (16 mph).
- Tide & sand 12:20 am
Low tide at 12:20 am and 12:41 pm: that's when there's the most sand. High tide at 6:37 am and 6:58 pm.
The EPA Ireland (beaches.ie) issues its bathing notices in season, from 1 June to 15 September; none are in force now. We don't have data on jellyfish or sargassum: ask the lifeguard or check the flags. How it works · The next 7 days
Beaches near Derrybeg
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- An Trá Mór 1.5 mi · SW
- Trá Dún Mór 1.8 mi · SW
- An Trá Líona 1.9 mi · NW
- An Trá Gheal 2.2 mi · NW
- Tramagheranagall 3.2 mi · W
- Braade Strand 3.4 mi · SW
- Carrickfinn Beach 3.6 mi · SW
- 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 authorities of Ireland.
Webcams near Derrybeg
Webcams provided by windy.com — add a webcam
Tides in Derrybeg
Today's high and low tides
- ▼ Low tide 12:20 am 1.6 ft
- ▲ High tide 6:37 am 13.1 ft · coef. 99
- ▼ Low tide 12:41 pm 2.0 ft
- ▲ High tide 6:58 pm 13.1 ft · coef. 97
↓ Falling The tide is falling. 3 h 9 min to low tide at 12:59 am.
Tide coefficient 99 for the 6:37 am high tide and 97 for the 6:58 pm high tide. Spring tides. The water rises and falls 11.5 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 August 14 (14.2 ft) and the lowest, on April 18 (0.7 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 101, 12.0 ft range). The smallest, on October 19 (coefficient 27, 4.0 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 | 7:29 am · 5:04 pm | Low tide 12:20 am · 1.6 ft | High tide 6:37 am · 13.1 ft | Low tide 12:41 pm · 2.0 ft | High tide 6:58 pm · 13.1 ft | Coef. 99 | 92% | Major periods 12:56 am · 1:28 pm | High |
| Thu 29 | 7:31 am · 5:02 pm | Low tide 12:59 am · 2.0 ft | High tide 7:20 am · 13.0 ft | Low tide 1:28 pm · 2.4 ft | High tide 7:45 pm · 12.4 ft | Coef. 93 | 85% | Major periods 2:00 am · 2:32 pm | High |
| Fri 30 | 7:33 am · 5:00 pm | Low tide 1:42 am · 2.6 ft | High tide 8:10 am · 12.6 ft | Low tide 2:23 pm · 3.1 ft | High tide 8:40 pm · 11.4 ft | Coef. 82 | 76% | Major periods 3:05 am · 3:36 pm | Medium |
| Sat 31 | 7:35 am · 4:58 pm | Low tide 2:31 am · 3.5 ft | High tide 9:08 am · 12.1 ft | Low tide 3:29 pm · 3.8 ft | High tide 9:47 pm · 10.4 ft | Coef. 68 | 65% | Major periods 4:07 am · 4:37 pm | Medium |
| Sun 1 | 7:37 am · 4:56 pm | Low tide 3:31 am · 4.3 ft | High tide 10:20 am · 11.5 ft | Low tide 4:51 pm · 4.3 ft | High tide 11:06 pm · 9.7 ft | Coef. 55 | Last quarter | Major periods 5:06 am · 5:34 pm | Low |
| Mon 2 | 7:39 am · 4:54 pm | Low tide 4:48 am · 4.9 ft | High tide 11:41 am · 11.3 ft | Low tide 6:20 pm · 4.4 ft | — | Coef. 48 | 43% | Major periods 6:00 am · 6:25 pm | Medium |
| Tue 3 | 7:41 am · 4:52 pm | High tide 12:31 am · 9.5 ft | Low tide 6:17 am · 5.0 ft | High tide 1:00 pm · 11.4 ft | Low tide 7:41 pm · 4.1 ft | Coef. 50 | 32% | Major periods 6:49 am · 7:13 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
Derrybeg has no station of its own, so we use the tide at Arranmore (Leabgarrow, TICON-4), 10 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 Derrybeg
Sea stateSea state: rough
The waves you may find
- Most commonMost common4.7 ft
- Significant9.3 ft
- Highest expectedHighest19 ft
One wave in seven is higher than the significant height, and about 3 times a day one reaches 19 ft. Before heading out, expect waves of up to 19 ft.
Wind on the coast and offshore
Cross-offshore wind. The coast faces northwest 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 ease over the next few days. The biggest waves arrive on Wednesday 28: 17 ft with a period of 11 s, from the west (very 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 warmer than normal for late October (+1.1 °F).
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 9:50 pm (local time).
Surf in Derrybeg today
Surf today
Fair- 5.9–9.1 ft surf at the shore, big
- Big surf (9.1 ft): for experienced surfers
- 7.8 ft swell at 9 s from the northwest, a bit short
- Moderate cross-shore wind (13 mph): a bit of chop
- Rising tide (high tide at 6:58 pm)
Big surf: for experienced surfers only. If in doubt, stay on the beach.
- Light: First light 6:51 am · sunrise 7:29 am · sunset 5:04 pm · last light 5:42 pm
- Tide: low 12:20 am (1.6 ft), high 6:37 am (13.1 ft), low 12:41 pm (2.0 ft) and high 6:58 pm (13.1 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 55.0 °F: a 5/4 fullsuit with booties (and a hood if it’s windy).
- Energy: 955 kJ · High power
Today’s surf at a glance
The best window, 2:00 pm to 5:42 pm, has a good size, though with big surf and cross-shore wind.
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 Derrybeg today
Diving and snorkeling today
Likely visibility: poor- Slack water around low tide (12:41 pm): little current from 12:20 pm to 1:00 pm
- 8.2 ft swell at 9 s from the northwest: heavy surge on the bottom
- Moderate cross-shore wind (15 mph)
- 0.7 mph current toward the northeast (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 12:20 am (12:00–12:40 am), high tide 6:37 am (6:10–7:00 am), low tide 12:41 pm (12:20–1:00 pm) and high tide 6:58 pm (6:30–7:20 pm)
- Likely visibility: poor. Swell (up to 12 ft at 10 s), rain (0.72 in) and wind over the last few days have stirred up the water. Based on the last 24 hours of data.
- Water at 55.0 °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 5:42 pm. Waning gibbous (92%), rising at 5:32 pm: a bright night.
Your diving day at a glance
The best window, 11:50 am to 1:40 pm, combines slack water at low tide and the sun high, though with a big swell, moderate wind and current. Also worth a look from 6:50 am to 9:50 am, with slack water at high tide and weak current, though with tidal current, a big swell and moderate wind. Also worth a look from 2:40 pm to 5:40 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
- HMS Boniface 7.5 mi
- Skifjord 8.9 mi
- Stolwijk 9.5 mi
- Eleftherios M Tricoglu 10 mi
- Silver Rose 12 mi
- Arranmore Charters 11 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 Derrybeg
Now in Derrybeg
- Low / high
- 53 / 56 °F
- Rain
- 0.19 in · 100%
- Clouds
- 98%
- Humidity
- 86%
- Dew pointDew point
- 50 °F
- Visibility
- 16 mi
- UV indexUV
- 0 · low
- Air qualityAir
- Fair · 26
- 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 (+0.03 inHg in 3 hours). Over the next 48 hours: +0.18 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 | Light rain | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast | Overcast |
| Temperature | 53° | 55° | 54° | 54° | 56° | 56° | 56° | 55° |
| Wind (mph) | 20 SW | 17 WSW | 13 WSW | 16 WSW | 15 WSW | 13 SW | 10 SSW | 9 S |
| Gusts | 36 | 34 | 30 | 29 | 27 | 23 | 19 | 16 |
| Waves | 17 ft | 16 ft | 14 ft | 13 ft | 12 ft | 11 ft | 10 ft | 9.5 ft |
| Rain | 0.09 in | 0.00 in | 0.00 in | 0.01 in | 0.00 in | 0.00 in | 0.00 in | 0.00 in |
- 9:00 pm 55° 9 S 9.5 ft
- 12:00 am 54° 12 S 8.7 ft
- 3:00 am 54° 13 S 8.2 ft
- 6:00 am 53° 12 SSE 7.7 ft
- 9:00 am 53° 14 SSE 7.3 ft
- 12:00 pm 56° 15 S 7.0 ft
- 3:00 pm 56° 16 SSE 6.9 ft
- 6:00 pm 54° 16 SSE 7.0 ft
Next 14 daysComing days
| Day | Sky | Low / high | Max wind | Max wave | High tides |
|---|---|---|---|---|---|
| Today · 28 | 53 / 56 °F | 23 mph SW | 17 ft | 6:37 am · 6:58 pm | |
| Thu 29 | 52 / 56 °F | 19 mph SSE | 8.7 ft | 7:20 am · 7:45 pm | |
| Fri 30 | 53 / 59 °F | 23 mph SSE | 7.8 ft | 8:10 am · 8:40 pm | |
| Sat 31 | 49 / 57 °F | 8 mph NNE | 7.5 ft | 9:08 am · 9:47 pm | |
| Sun 1 | 47 / 52 °F | 7 mph NE | 6.8 ft | 10:20 am · 11:06 pm | |
| Mon 2 | 42 / 54 °F | 6 mph ESE | 5.3 ft | 11:41 am | |
| Tue 3 | 40 / 50 °F | 7 mph SE | 5.6 ft | 12:31 am · 1:00 pm | |
| Wed 4 | 45 / 51 °F | 6 mph SE | 6.9 ft | 1:47 am · 2:09 pm | |
| Thu 5 | 45 / 52 °F | 9 mph ESE | 5.1 ft | 2:48 am · 3:05 pm | |
| Fri 6 | 42 / 51 °F | 11 mph ESE | 3.6 ft | 3:36 am · 3:52 pm | |
| Sat 7 | 36 / 48 °F | 7 mph ESE | 2.6 ft | 4:17 am · 4:33 pm | |
| Sun 8 | 32 / 47 °F | 10 mph ESE | 2.8 ft | 4:54 am · 5:10 pm | |
| Mon 9 | 46 / 54 °F | 10 mph ESE | 2.8 ft | 5:29 am · 5:44 pm | |
| Tue 10 | 48 / 54 °F | 7 mph E | 3.0 ft | 6:03 am · 6:16 pm |
- Thu 29 Overcast 52° / 56° 8.7 ft
- Fri 30 Light rain 53° / 59° 7.8 ft
- Sat 31 Light rain 49° / 57° 7.5 ft
- Sun 1 Overcast 47° / 52° 6.8 ft
- Mon 2 Partly cloudy 42° / 54° 5.3 ft
- Tue 3 Overcast 40° / 50° 5.6 ft
- Wed 4 Overcast 45° / 51° 6.9 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 (+2.2 °F; normal high: 54 °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 9:50 pm (local time).
The sun in Derrybeg
Sunrise and sunset
- First light 6:08 am
- Full dark 6:25 pm
- Civil dawn 6:51 am
- Civil dusk 5:42 pm
- Solar noon 12:17 pm (22° high)
- Daylight 9 h 35 min (−4 min)
- Evening golden hour 4:10 pm
- Full dark 6:25 pm
Golden hour and the day-night map
Today the sun is 92,359,298 mi away and looks 32′ 11″ across.
The moon in Derrybeg
Moon phase and position
Today the moon is 226,451 mi away and looks 32′ 47″ across.
Solunar periods
Today's activity: high- 12:56–2:56 am Major · the moon passes overhead · high activity
- 1:28–3:28 pm Major · the moon passes underfoot · high activity
- 10:48–11:48 am Minor · moonset · medium activity
- 5:02–6:02 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 Derrybeg
Piers, ramps and tackle shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- Ballyness Pier 8.0 mi
- Magheraroarty Pier 6.4 mi
- Boat ramp 2.0 mi
- Boat ramp 2.2 mi
- Boat ramp 2.6 mi
- Boat ramp 2.6 mi
- Boat ramp 4.1 mi
- Boat ramp 5.3 mi
- Boat ramp 6.4 mi
- Boat ramp 6.5 mi
- Boat ramp 6.7 mi
- Boat ramp 8.4 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
Very shallowVery shallow and flat: even 2.5 mi from shore the water is less than 16 ft deep.
From the shoreline (0.7 mi from Derrybeg) out to sea, heading west.
How far from shore
- 16 ft deepnot within 2.5 mi
- 33 ft deepnot within 2.5 mi
- 66 ft deepnot within 2.5 mi
- 164 ft deepnot within 2.5 mi
For fishing, swimming and diving
- Shore fishing. Very shallow: the water doesn't reach 16 ft within 2.5 mi. Cast far from the beach, ideally around high tide.
- 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: the water doesn't reach 33 ft within 2.5 mi. For deeper dives, take a boat farther out.
There is land ahead (an island, a headland or the far shore) 2.5 mi out. The profile is turned slightly from the coast so it does not run into an island or a headland. 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 DerrybegTides nearby
- Rann Na Feirste3.4 mi
- Annagary4.4 mi
- Meenlaragh5.9 mi
- Gortahork6.6 mi
- Falcarragh8.3 mi
- Burtonport8.8 mi
- Dungloe9.5 mi
- Leabgarrow11 mi
- Dunfanaghy15 mi
- Creeslough15 mi
Derrybeg at a glance
- Town or city of about 1,553 people. Coordinates: 55.083° N, 8.289° W.
- It is 33 mi west of Buncrana, the main place in Donegal. The sun rises 3 min later and sets 3 min later than in Buncrana.
- The nearest tide station, Arranmore, is 10 mi to the southwest.
- Its coast faces northwest.
- Beaches and harbors nearby: Gweedore Harbour (2.9 mi).
Questions about DerrybegQuestions
What time is high tide today in Derrybeg?
Today in Derrybeg there are high tides at 6:37 am (13.1 ft) and 6:58 pm (13.1 ft) and low tides at 12:20 am and 12:41 pm. Tide coefficient 99.
What time is sunset today in Derrybeg?
At 5:04 pm. There is light until the end of civil twilight, at 5:42 pm.
What time is sunrise tomorrow in Derrybeg?
At 7:31 am. First light comes at 6:10 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 12:56–2:56 am, Minor 10:48–11:48 am, Major 1:28–3:28 pm, Minor 5:02–6:02 pm. Today's activity is high.
What's the weather like today in Derrybeg?
Light showers, from 53 °F to 56 °F, with a gentle breeze from the south (10 mph) and a 100% chance of rain.
How is the sea today in Derrybeg?
Rough (Douglas 5): 9.3 ft waves with a period of 9.8 s from the west. The water is 55.6 °F.
When is the best time to visit Derrybeg?
The best time to visit Derrybeg is from June to August: highs of 60 °F to 63 °F, about 16 rainy days a month and 5 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: Arranmore (Leabgarrow) 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).