Surf Forecasts:
Kilcummin Harbour surf forecast from 23 Aug 2026:
- Best quality surf: Monday 24 Aug, 4AM (local time) - 4.5ft (1.4m), 12s period, NW swell with offshore winds.
- Most powerful swell: Sunday 30 Aug, 4AM (local time) - 10ft (3.0m), 10s period, NW swell with 1,857 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 1AM (local time) - 4ft (1.2m), 11s period with NW swell.
Best Forecast Surf Conditions for Kilcummin Harbour this week:
The surf forecast for Kilcummin Harbour over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 24) at 1AM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.2m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Kilcummin Harbour in the next 16 days are 3.0m 10s and forecast to arrive on Sunday (Aug 30) at 4AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 24) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Mon 24th Aug) | 4ft (1.2m) 11s |
| Best Surf | 4AM (Mon 24th Aug) | 4.5ft (1.4m) 12s |
| Most Powerful | 4AM (Sun 30th Aug) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright, let’s break down what’s happening at Kilcummin Harbour over the next couple of weeks.
Right now it’s flat. Sunday the 23rd starts with a tiny 1ft WNW swell and clean conditions, but there’s no power – poor surf. Afternoon gets a slight bump to 2ft but it’s cross-shore and still no good.
Monday the 24th is where it gets interesting. We’ve got a solid 5ft to 6ft WNW swell with a 11-second period, and the wind is cross-offshore and light. That means clean faces and proper energy. The combined energy jumps to moderate to strong, so the reef should start showing some decent lines. This is the first real standout – Monday morning and afternoon both look good.
Tuesday the 25th drops back. Morning sees 4ft WNW swell but the wind is a moderate cross-off, and energy drops. By afternoon it’s down to 3ft and poor. Wednesday is worse – short period ENE slop and rain, not worth your time.
Thursday the 27th offers a little WNW swell at 3ft but it’s cross-onshore with light rain – not good. Friday is choppy and onshore with 3ft to 5ft NW swell. Saturday the 29th brings a bump in size – 8ft WNW swell, but the cross-shore wind and period of only 7 seconds means it’s messy and only marginal. Sunday the 30th hits 10ft NNW swell with a 10-second period and cross-onshore wind – strong energy but too rough for a good session. This is expert-only territory if you’re keen on a battle, but it’s not clean.
Monday the 31st and Tuesday September 1st are mostly onshore and small, with poor conditions. Wednesday September 2nd is a real standout. Morning brings 8ft W swell with offshore wind and a 8-second period, clean and punchy. The energy is strong. By afternoon, it builds to 8ft W swell with 9-second period, light offshore wind, and energy is very strong – excellent surf for experienced surfers. This is the best of the run.
Thursday September 3rd holds 8ft to 10ft W swell with offshore to cross-off winds, and energy very strong – again excellent for experts. Friday September 4th drops to 5ft W swell with moderate offshore wind – good conditions for intermediates. Saturday and Sunday taper off but stay clean with offshore winds and 3ft to 6ft swell.
Monday September 7th ends the forecast with 5ft WNW swell but cross-onshore wind and choppy conditions – not recommended.
Overall, the first real surf hits Monday the 24th, then we have a gap of poor days until the next standout on Wednesday September 2nd. That Wednesday afternoon is the pick of the whole period – 8ft W swell, offshore wind, clean faces, and plenty of energy. If you’re an experienced surfer, don’t miss it.
Rusty
Short Range ForecastMostly dry. Warm (max 20°C on Mon afternoon, min 11°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 30mm), heaviest during Thu afternoon. Very mild (max 19°C on Wed afternoon, min 14°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | WNW 9 | NW 7 | NW 11 | WNW 11 | W 11 | W 10 | W 10 | W 9 | W 8 | ENE 4 | W 8 | WNW 10 | WNW 9 | W 9 | WNW 8 | NNW 6 | NW 6 | WNW 7 | WNW 7 | WNW 7 | NNW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 15 | 22 | 319 | 597 | 657 | 470 | 216 | 127 | 66 | 42 | 20 | 170 | 115 | 57 | 22 | 40 | 162 | 243 | 635 | 522 | 1021 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-on | cross-off | on | cross-on | cross-on | cross | cross | cross-on | cross-on |
High Tide | 3:46PM2.51m | 4:16AM2.35m | 4:40PM2.74m | 5:01AM2.54m | 5:20PM3.00m | 5:37AM2.73m | 5:53PM3.23m | 6:10AM2.90m | 6:24PM3.43m | 6:42AM3.05m | 6:55PM3.57m | 7:13AM3.15m | 7:25PM3.64m | ||||||||
Low Tide | 9:17AM1.23m | 10:12PM1.13m | 10:15AM1.04m | 10:58PM0.92m | 10:56AM0.81m | 11:34PM0.70m | 11:31AM0.60m | 00:07AM0.49m | 12:03PM0.42m | 00:37AM0.31m | 12:34PM0.29m | 1:06AM0.18m | 1:05PM0.21m | 1:36AM0.10m | |||||||
 |  |  | | |  | |  |  |  |  |  |  | | | | | | | |  | |
 | 6:26 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — |
 | — | 8:50 | — | — | 8:47 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:36 | — |
mm | — | — | — | — | — | — | — | — | 6 | 1 | 3 | 2 | 4 | 12 | 2 | — | — | — | — | — | — |
Temp °C | 16 | 17 | 16 | 17 | 20 | 18 | 17 | 18 | 16 | 17 | 19 | 18 | 15 | 15 | 15 | 16 | 15 | 14 | 15 | 15 | 14 |
Feels °C | 15 | 15 | 15 | 14 | 17 | 16 | 14 | 16 | 15 | 15 | 17 | 17 | 15 | 15 | 15 | 15 | 11 | 10 | 11 | 11 | 10 |
Swell 1 Height (m) Direction Period (s) | NW 6 | NW 7 | NW 11 | WNW 11 | W 11 | W 10 | W 10 | W 9 | W 8 | W 8 | W 8 | WNW 10 | WNW 9 | W 9 | N 5 | NNW 6 | N 7 | — | — | NNW 10 | NNW 10 |
| kJ | 8 | 22 | 319 | 597 | 657 | 470 | 216 | 127 | 66 | 28 | 18 | 170 | 115 | 57 | 17 | 40 | 9 | — | — | 151 | 1021 |
Swell 2 Height (m) Direction Period (s) | WNW 9 | WNW 8 | WSW 9 | N 8 | NE 8 | NE 8 | — | WNW 8 | NW 8 | NW 8 | NW 8 | NNW 8 | NNE 4 | N 8 | WNW 8 | WNW 8 | — | — | — | — | — |
| kJ | 15 | 13 | 8 | 1 | 2 | 2 | — | 7 | 15 | 23 | 16 | 6 | 3 | 6 | 22 | 11 | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | NNW 7 | WSW 8 | NNE 8 | W 14 | W 14 | — | — | — | — | — | WNW 11 | NW 11 | NNW 7 | NNW 7 | N 8 | N 8 | — | — | — | — | — |
| kJ | 9 | 7 | 7 | 4 | 4 | — | — | — | — | — | 12 | 5 | 5 | 5 | 12 | 4 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | SE 3 | — | — | ESE 3 | E 3 | ENE 3 | ENE 4 | ENE 4 | NE 6 | E 3 | NNE 4 | ESE 3 | — | NW 6 | WNW 7 | WNW 7 | WNW 7 | W 7 |
| kJ | — | — | — | 2 | — | — | 3 | 3 | 3 | 42 | 20 | 23 | 1 | 3 | 2 | — | 162 | 243 | 635 | 522 | 366 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 171 | 52 | 0 | 0 | 0 | 10 | 10 | 10 | 10 | 166 | 56 | 0 | 10 | 10 | 219 | 151 | 283 | 416 | 467 | 475 | 473 |
Best forecast wave conditions in Mayo and Achill Island | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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Information about the Kilcummin Harbour Surf forecast
The above surf forecast table for Kilcummin Harbour provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Kilcummin Harbour can be found by selecting the local surf guide option on the grey menu. Our Kilcummin Harbour surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Kilcummin Harbour) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Kilcummin Harbour may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Kilcummin Harbour is 19 km (12 miles) from Ballina. If you plan a holiday in Mayo and Achill Island, look for hotels and other accommodation in Ballina. Ballina has rooms for a wide range of budgets as well as car hire and transport links.
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