TidePlanet

Today in Achill Sound there are high tides at 7:09 am (14.5 ft) and 7:36 pm (13.4 ft) and low tides at 12:57 am and 1:26 pm. Tide coefficient 92. Right now the tide is rising toward the high tide at 7:09 am. The sun rises at 7:34 am and sets at 5:12 pm: 9 h 38 min of daylight. The moon is 85% illuminated (waning gibbous) and rises at 6:43 pm. Major solunar periods run from 2:07 am to 4:07 am and from 2:39 pm to 4:39 pm. The next spring tides arrive from November 9 to 11. The sea is moderate, with 4.8 ft waves. There's a moderate breeze from the south-southeast (15 mph). Overcast, 56 °F.

Fishing

Fishing in Achill Sound today

Fishing forecast, 7 days →

Best time to fish

Solunar activity today: medium
7
Good day · 7 out of 10 7:00–8:10 am
  • High tide at 7:09 am, coefficient 92
  • Sunrise at 7:34 am
  • Steady pressure (30.09 inHg), moderate cross-shore wind (16 mph) and some swell (4.9 ft waves) to stir the water
  • Waning gibbous: a bit more activity than at the quarters
  • Highest tide coefficient today: 92 (spring tides)
  • A major period lines up with sunset

Your day at a glance

The best window, 7:00 am to 8:10 am, combines the 7:09 am high tide, sunrise and some swell, though with moderate wind.

Species with the most records nearby: thornback ray, small-spotted catshark, European plaice and whiting. October is one of the months when these are seen most: small-spotted catshark. What you can catch

How it works · Next 7 days · Fishing rules

Beach

Beach day in Achill Sound

Beach forecast, 7 days →

Is it a beach day?

0
Not a beach day · 0 out of 10 No good beach time today.
  • Low tide at 1:26 pm: more sand
  • Cloudy (95% cloud cover)
  • Feels like 52 °F: chilly for the beach
  • Fresh cross-shore wind (19 mph): blowing sand
  • Swim with care: 5.1 ft waves every 8 s; moderate rip current risk
  • Water at 54 °F (very cold)

Today, hour by hour

  • Swimming Use care · 5.1 ft

    5.1 ft waves every 8 s: swim with care and stay where you can stand. Moderate rip current risk. Always follow the lifeguard's flags.

  • Water 54 °F

    Very cold: ease in and keep swims short.

  • Sun & sunscreen UV 1 · SPF 15

    Max UV 1 (low): SPF 15 sunscreen.

  • Wind 19 mph

    Fresh cross-shore wind (19 mph): blowing sand.

  • Tide & sand 1:26 pm

    Low tide at 12:57 am and 1:26 pm: that's when there's the most sand. High tide at 7:09 am and 7:36 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 Achill Sound

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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.

Tides

Tides in Achill Sound

Tides for 7 days →

Today's high and low tides

  • ▼ Low tide 12:57 am 2.2 ft
  • ▼ Low tide 1:26 pm 2.1 ft
  • ▲ High tide 7:36 pm 13.4 ft · coef. 88

↑ Rising The tide is rising. 1 h 38 min to high tide at 7:09 am.

Tide coefficient 92 for the 7:09 am high tide and 88 for the 7:36 pm high tide. Spring tides. The water rises and falls 12.4 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 13 (15.1 ft) and the lowest, on August 14 (0.6 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 26 to 28 (coefficient 98, 12.9 ft range). The smallest, on October 19 (coefficient 25, 4.2 ft).

Tide and solunar table · this week

Day Sun Tide 1Tide 2Tide 3Tide 4 Coef. Moon Major periods Activity
Today, Thu 29 7:34 am · 5:12 pm Low tide 12:57 am · 2.2 ft High tide 7:09 am · 14.5 ft Low tide 1:26 pm · 2.1 ft High tide 7:36 pm · 13.4 ft Coef. 92 85% Major periods 2:07 am · 2:39 pm Medium
Fri 30 7:36 am · 5:10 pm Low tide 1:40 am · 2.9 ft High tide 7:53 am · 14.0 ft Low tide 2:15 pm · 2.5 ft High tide 8:28 pm · 12.7 ft Coef. 83 76% Major periods 3:11 am · 3:43 pm Medium
Sat 31 7:38 am · 5:08 pm Low tide 2:29 am · 3.7 ft High tide 8:43 am · 13.4 ft Low tide 3:12 pm · 3.1 ft High tide 9:28 pm · 11.9 ft Coef. 72 65% Major periods 4:14 am · 4:44 pm Medium
Sun 1 7:40 am · 5:06 pm Low tide 3:26 am · 4.6 ft High tide 9:43 am · 12.6 ft Low tide 4:19 pm · 3.5 ft High tide 10:41 pm · 11.2 ft Coef. 61 Last quarter Major periods 5:13 am · 5:41 pm Medium
Mon 2 7:42 am · 5:04 pm Low tide 4:38 am · 5.2 ft High tide 10:55 am · 12.0 ft Low tide 5:37 pm · 3.7 ft — Coef. 54 43% Major periods 6:07 am · 6:32 pm Medium
Tue 3 7:44 am · 5:02 pm High tide 12:05 am · 10.9 ft Low tide 6:02 am · 5.3 ft High tide 12:16 pm · 11.8 ft Low tide 6:56 pm · 3.5 ft Coef. 54 32% Major periods 6:56 am · 7:20 pm Medium
Wed 4 7:46 am · 5:00 pm High tide 1:23 am · 11.2 ft Low tide 7:22 am · 4.9 ft High tide 1:31 pm · 12.0 ft Low tide 8:04 pm · 3.0 ft Coef. 60 23% Major periods 7:42 am · 8:05 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

B · Nearby station

Achill Sound has no station of its own, so we use the tide at Achill Island (Marine Institute), 6.8 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: Marine Institute, Ireland: tide prediction for Achill Island (from the Marine Institute operational hydrodynamic model), https://erddap.marine.ie/erddap/tabledap/imiTidePrediction.html. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: harmonic constants fitted by TidePlanet from the hourly prediction of 2026.

How we calculate the tide

Sea and waves

The sea at Achill Sound

7-day waves

Sea stateSea state: moderate

Moderate Douglas 4 · fresh breeze, Beaufort 5
Waves 4.8 ft · 7.5 s from the southwest (233°)
Swell 4.1 ft · 7.3 s from the west-southwest
Current 0.5 mph toward the NNE

The waves you may find

  • Most commonMost common2.4 ft
  • Significant4.8 ft
  • Highest expectedHighest9.8 ft

One wave in seven is higher than the significant height, and about 3 times a day one reaches 9.8 ft. Before heading out, expect waves of up to 9.8 ft.

Wind on the coast and offshore

On the coast 15 mph SSE · gusts 31
Offshore (5.6 mi NNW)Offshore 21 mph S · gusts 28

Cross-onshore wind. The coast faces southwest and the wind comes in from the sea at an angle: a bit more surf at the shore and drift along the coast, toward land.

Cross-onshore Hourly wind →

Wave height, next 7 daysWaves, next 7 days

Waves stay much the same all week. The biggest waves arrive on Friday 30: 5.8 ft with a period of 9 s, from the southwest (moderate).

Water temperature

Water temperature →
Water now54.1 °F
Today 54.0–54.1 °F air: 56 / 59 °F
Satellite (2 days ago) 55.0 °F measured 1.2 mi away

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 53.2 °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 5:31 am (local time).

Diving

Diving in Achill Sound today

Diving and snorkeling, 7 days →

Diving and snorkeling today

Likely visibility: poor
4
Fair day · 4 out of 10 12:30–2:20 pm Also 7:30–8:10 am
  • Slack water around low tide (1:26 pm): little current from 1:00 pm to 1:50 pm
  • 3.9 ft swell at 8 s from the west-southwest: some surge on the bottom
  • Fresh cross-shore wind (18 mph)
  • 0.3 mph current toward the north, weak (model)
  • Sun high: more light underwater
Swell 3.9 ft 8 s · from the WSW
Likely visibility Poor Snorkeling: poor
Water and suit 54.0 °F 7 mm semi-dry suit
Current 0.3 mph toward the N
  • Slack water today: low tide 12:57 am (12:40–1:20 am), high tide 7:09 am (6:50–7:30 am), low tide 1:26 pm (1:00–1:50 pm) and high tide 7:36 pm (7:10–8:00 pm)
  • Likely visibility: poor. Swell (up to 7.2 ft at 10 s) over the last few days has stirred up the water. Based on the last 24 hours of data.
  • Water at 54.0 °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 5:49 pm. Waning gibbous (85%), rising at 6:43 pm: a bright night.

Your diving day at a glance

The best window, 12:30 pm to 2:20 pm, combines slack water at low tide, weak current and the sun high, though with some swell and fresh wind. Also worth a look from 7:30 am to 8:10 am, though with some swell, moderate wind 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.

How it works · Next 7 days

Dive sites, wrecks and dive shops nearby

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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

Weather in Achill Sound

14-day weather

Now in Achill Sound

Now 56 °F Overcast · feels like 50 °F · 56 / 59 °F
Low / high
56 / 59 °F
Rain
0.01 in · 16%
Clouds
99%
Humidity
86%
Dew pointDew point
52 °F
Visibility
16 mi
UV indexUV
0 · low
Air qualityAir
Fair · 29
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: +0.24 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 am3:00 am6:00 am9:00 am12:00 pm3:00 pm6:00 pm9:00 pm
Sky OvercastOvercastOvercastOvercastOvercastOvercastOvercastOvercast
Temperature 57°57°56°56°58°59°57°56°
Wind (mph) 17 S15 S15 SSE16 SSE18 SSE19 SSE18 SSE19 SE
Gusts 3334323735363746
Waves 5.1 ft5.0 ft4.8 ft4.9 ft4.8 ft5.1 ft5.1 ft5.2 ft
Rain 0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in0.00 in
  • 6:00 am 56° 15 SSE 4.8 ft
  • 9:00 am 56° 16 SSE 4.9 ft
  • 12:00 pm 58° 18 SSE 4.8 ft
  • 3:00 pm 59° 19 SSE 5.1 ft
  • 6:00 pm 57° 18 SSE 5.1 ft
  • 9:00 pm 56° 19 SE 5.2 ft
  • 12:00 am 57° 19 SE 5.4 ft
  • 3:00 am 60° 20 SSE 5.6 ft

Next 14 daysComing days

Day Sky Low / high Max wind Max wave High tides
Today · 29 Overcast 56 / 59 °F 21 mph SSE 5.3 ft 7:09 am · 7:36 pm
Fri 30 Rain 54 / 62 °F 21 mph SSE 5.8 ft 7:53 am · 8:28 pm
Sat 31 Light rain 53 / 56 °F 7 mph N 4.6 ft 8:43 am · 9:28 pm
Sun 1 Overcast 48 / 56 °F 6 mph NE 3.7 ft 9:43 am · 10:41 pm
Mon 2 Partly cloudy 47 / 55 °F 10 mph ESE 2.6 ft 10:55 am
Tue 3 Overcast 41 / 52 °F 7 mph ESE 3.3 ft 12:05 am · 12:16 pm
Wed 4 Overcast 44 / 52 °F 8 mph ESE 3.7 ft 1:23 am · 1:31 pm
Thu 5 Overcast 44 / 53 °F 10 mph ESE 2.9 ft 2:26 am · 2:35 pm
Fri 6 Partly cloudy 41 / 50 °F 12 mph ESE 2.0 ft 3:18 am · 3:28 pm
Sat 7 Partly cloudy 40 / 48 °F 9 mph ESE 1.0 ft 4:02 am · 4:14 pm
Sun 8 Light drizzle 40 / 50 °F 10 mph E 1.1 ft 4:41 am · 4:56 pm
Mon 9 Light drizzle 47 / 54 °F 9 mph ESE 1.2 ft 5:17 am · 5:35 pm
Tue 10 Overcast 50 / 55 °F 6 mph E 0.8 ft 5:51 am · 6:11 pm
Wed 11 Light drizzle 51 / 53 °F 13 mph SE 1.5 ft 6:24 am · 6:46 pm
  • Fri 30 Rain 54° / 62° 5.8 ft
  • Sat 31 Light rain 53° / 56° 4.6 ft
  • Sun 1 Overcast 48° / 56° 3.7 ft
  • Mon 2 Partly cloudy 47° / 55° 2.6 ft
  • Tue 3 Overcast 41° / 52° 3.3 ft
  • Wed 4 Overcast 44° / 52° 3.7 ft
  • Thu 5 Overcast 44° / 53° 2.9 ft
See all 14 days →

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 on Saturday 31. 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 (+4.5 °F; normal high: 55 °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 5:31 am (local time).

Sun

The sun in Achill Sound

Sunrise and sunset →

Sunrise and sunset

Rises 7:34 am in the ESE (112°)ESE
Sets 5:12 pm in the WSW (248°)WSW
  • First light 6:16 am
  • Full dark 6:30 pm
  • Civil dawn 6:57 am
  • Civil dusk 5:49 pm
  • Solar noon 12:23 pm (23° high)
  • Daylight 9 h 38 min (−4 min)
  • Evening golden hour 4:19 pm
  • Full dark 6:30 pm

Golden hour and the day-night map

Morning golden hour7:34–8:27 am
Evening golden hour4:19–5:12 pm
Achill Sound

Today the sun is 92,334,883 mi away and looks 32′ 11″ across.

Moon and solunar

The moon in Achill Sound

The moon for 7 days →

Moon phase and position

Waning gibbous · 85% 85% illuminated · 18.8 days old New moon on Mon, Nov 9 · 7:03 am
Rises 6:43 pm in the NE (38°)NE
Sets 1:32 pm tomorrow · in the NW (320°) · set at 12:34 pm
Transit 3:07 am overhead
Visible 18 h 49 min from 6:43 pm to 1:32 pm

Today the moon is 226,641 mi away and looks 32′ 45″ across.

Solunar periods

Today's activity: medium
  • 2:07–4:07 am Major · the moon passes overhead · high activity
  • 2:39–4:39 pm Major · the moon passes underfoot · high activity
  • 12:04–1:04 pm Minor · moonset · medium activity
  • 6:13–7:13 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 3 days
  • New moon Mon, Nov 9 · 7:03 amNov 9 in 11 days
  • First quarter Tue, Nov 17 · 11:48 amNov 17 in 19 days
  • Full moon Tue, Nov 24 · 2:54 pmNov 24 in 26 days

Next perigee (the moon at its closest to Earth): November 25, 223,281 mi away.

Place

Where to fish in Achill Sound

All places in Mayo →

Piers, ramps and tackle shops nearby

Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors

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.

Nearest lighthouse

Photo of Achillbeg Lighthouse
Photo: National Geospatial-Intelligence Authority · Public domain

Achillbeg Lighthouse 4.8 mi south

Light
A flash every 5 s; white or red depending on where you see it from · Fl WR 5s
Range
16 nautical miles (18 mi)
Light height
184 ft above sea level
Tower height
30 ft
Built
1965

Light details: NGA List of Lights (USA); the rest from Wikidata. For reference only: not for navigation. Wikidata · Sources and licenses

Tides near Achill SoundTides nearby

All places in Mayo, A to Z (87) →

Achill Sound at a glance

  • Town or city of about 238 people. Coordinates: 53.928° N, 9.939° W.
  • It is 19 mi northwest of Westport, the main place in Mayo. The sun rises 2 min later and sets 1 min later than in Westport.
  • The nearest tide station, Achill Island, is 6.8 mi to the west.
  • Its coast faces southwest.
  • Beaches and harbors nearby: Portaghurra Harbour (4.5 mi).

Questions about Achill SoundQuestions

What time is high tide today in Achill Sound?

Today in Achill Sound there are high tides at 7:09 am (14.5 ft) and 7:36 pm (13.4 ft) and low tides at 12:57 am and 1:26 pm. Tide coefficient 92.

What time is sunset today in Achill Sound?

At 5:12 pm. There is light until the end of civil twilight, at 5:49 pm.

What time is sunrise tomorrow in Achill Sound?

At 7:36 am. First light comes at 6:17 am.

What phase is the moon today?

Waning gibbous, 85% illuminated. New moon on Mon, Nov 9 · 7:03 am.

When are the next spring tides?

From November 9 to 11.

What are today's solunar periods?

Major 2:07–4:07 am, Minor 12:04–1:04 pm, Major 2:39–4:39 pm, Minor 6:13–7:13 pm. Today's activity is medium.

What's the weather like today in Achill Sound?

Overcast, from 56 °F to 59 °F, with a moderate breeze from the south-southeast (15 mph) and a 16% chance of rain.

How is the sea today in Achill Sound?

Moderate (Douglas 4): 4.8 ft waves with a period of 7.5 s from the southwest. The water is 54.1 °F.

When is the best time to visit Achill Sound?

The best time to visit Achill Sound is from June to August: highs of 62 °F to 64 °F, about 14 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: Achill Island prediction point of the Marine Institute (Ireland), computed with its ocean model, licensed CC BY 4.0; constants fitted by TidePlanet from a year of its predictions. Sun and moon: our own calculation with astronomy-engine. Places: GeoNames (CC BY 4.0). Coastline: © OpenStreetMap contributors (ODbL).

Spotted a mistake? Tell us · How we calculate the tide

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