Surf Forecasts:
Kilcummin Harbour surf forecast from 24 Aug 2026:
- Best quality surf: Monday 24 Aug, 7AM (local time) - 5ft (1.6m), 11s period, WNW swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 7AM (local time) - 5ft (1.6m), 11s period, WNW swell with 639 kJ wave energy.
- Next surfable swell (1★+): Monday 24 Aug, 7AM (local time) - 5ft (1.6m), 11s period with WNW 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 7AM. The primary swell is predicted to be 1.6m 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 1.6m 11s and forecast to arrive on Monday (Aug 24) at 7AM. Winds are predicted to be cross-offshore 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 7AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 24th Aug) | 5ft (1.6m) 11s |
| Best Surf | 7AM (Mon 24th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 7AM (Mon 24th Aug) | 5ft (1.6m) 11s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Listen up, folks, Rusty here. Gonna break down what we’ve got cookin’ for this spot over the next couple of weeks. It’s a reef break, so it needs the right angles.
We kick things off on Monday, August 24th with some clean lines. A solid 5ft swell out of the WNW, with an 11-second period, pushing some decent energy around (606). The wind is a light cross-off and conditions are tidy. A good way to get the week wet. Tuesday the 25th shows a drop to about 4ft, and things start to get a bit scrappy by the afternoon. Wednesday, Thursday, and Friday are essentially a washout with weak, small, or choppy junk.
Alright, Saturday the 29th brings a little bit of life back. We’re looking at 5-6ft from the NNW, light cross-off breezes, and clean faces. Moderate energy in the water (350-453). It’s not the best of the year, but it’s surfable. Sunday the 30th has a smaller 4ft swell in the morning, but some light offshore wind will make for a clean window. It gets messy by the afternoon.
A few quiet days follow Monday and Tuesday of the next week. Then we hit *the* window. Sunday, September 6th. Swell jumps to 8ft from the WNW, but the period is a massive 17 seconds. That’s a deep-ocean groundswell with a ton of push (3926). The kicker? The wind is forecast to go glassy in the afternoon. This is excellent, powerful surf, but at that size and period, it’s for experienced hands only. The waves will have real shape and power, with long waits between sets.
And then… Monday, September 7th. This is the big one. A 13ft swell from the WNW, with a 14-second period, cranking out over 6000 units of energy. The morning brings a moderate offshore wind. This is exceptional, giant surf. Experts only. That is the standout day of the entire run. Tuesday the 8th still has a massive 12ft swell, but the wind shifts a bit to a cross-off.
So here’s the summary: the first week is mostly a waiting game with a few clean, smaller windows. The second week, though, looks absolutely massive and clean, especially that Monday the 7th. It’s a long way off, but the potential is through the roof. Mark it.
- Rusty
Short Range ForecastModerate rain (total 15mm), heaviest on Tue night. Warm (max 20°C on Mon afternoon, min 11°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Thu night. Very mild (max 17°C on Wed night, min 12°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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 11 | W 10 | W 10 | W 10 | W 9 | W 8 | W 8 | W 8 | WNW 10 | WNW 9 | WNW 9 | NNW 6 | NNW 6 | N 6 | N 7 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | N 8 | N 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 597 | 573 | 459 | 220 | 127 | 48 | 29 | 28 | 150 | 138 | 82 | 101 | 205 | 239 | 111 | 350 | 453 | 358 | 207 | 165 | 309 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross |
High Tide | 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 | 7:45AM3.21m | 7:56PM3.62m | |||||||
Low Tide | 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 | 1:36PM0.19m | 2:06AM0.10m | |||||||
 | |  | |  |  | |  | | |  |  | | | | | |  |  | | | |
 | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:33 | — | — | 6:35 | — | — | 6:37 | — | — | 6:39 | — | — |
 | — | 8:47 | — | — | 8:45 | — | — | 8:43 | — | — | 8:40 | — | — | 8:38 | — | — | 8:36 | — | — | 8:34 | — |
mm | — | — | — | — | 1 | 12 | — | 2 | — | 1 | — | 4 | — | — | — | — | — | 1 | 9 | 2 | 2 |
Temp °C | 17 | 20 | 18 | 18 | 19 | 15 | 16 | 18 | 17 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 14 | 13 | 15 | 14 |
Feels °C | 14 | 18 | 16 | 15 | 18 | 12 | 13 | 17 | 17 | 16 | 17 | 17 | 13 | 12 | 12 | 13 | 15 | 12 | 10 | 10 | 9 |
Swell 1 Height (m) Direction Period (s) | WNW 11 | W 10 | W 10 | W 10 | W 9 | W 8 | W 8 | W 8 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | — | — | N 7 | NNW 8 | NNW 9 | NNW 9 | NNW 8 | N 8 | W 10 |
| kJ | 597 | 573 | 459 | 220 | 127 | 48 | 29 | 28 | 150 | 138 | 82 | 36 | — | — | 111 | 350 | 453 | 358 | 207 | 165 | 65 |
Swell 2 Height (m) Direction Period (s) | WSW 9 | W 14 | — | — | WNW 8 | WNW 8 | NNW 8 | WNW 11 | NW 7 | NNW 8 | — | — | — | — | NW 9 | — | — | W 13 | W 12 | W 11 | — |
| kJ | 8 | 4 | — | — | 7 | 6 | 6 | 22 | 2 | 6 | — | — | — | — | 3 | — | — | 3 | 25 | 81 | — |
Swell 3 Height (m) Direction Period (s) | N 8 | — | — | — | — | NE 5 | NW 7 | NW 7 | NW 10 | N 9 | — | — | — | — | — | — | — | — | W 8 | — | — |
| kJ | 1 | — | — | — | — | 1 | 2 | 8 | 4 | 2 | — | — | — | — | — | — | — | — | 1 | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | NE 8 | — | ESE 3 | E 3 | ENE 3 | E 4 | NE 4 | NE 4 | NNE 4 | N 4 | NNW 6 | NNW 6 | N 6 | NW 6 | — | — | — | — | — | N 8 |
| kJ | 4 | 2 | — | 3 | 2 | 3 | 18 | 12 | 19 | 11 | 30 | 101 | 205 | 239 | 61 | — | — | — | — | — | 309 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 10 | 10 | 11 | 66 | 11 | 10 | 10 | 10 | 52 | 269 | 467 | 0 | 0 | 0 | 10 | 0 | 86 | 129 |
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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