Surf Forecasts:
Kilcummin Harbour surf forecast from 7 Aug 2026:
- Best quality surf: Friday 7 Aug, 10PM (local time) - 8ft (2.4m), 10s period, WNW swell with offshore winds.
- Most powerful swell: Friday 7 Aug, 4PM (local time) - 8ft (2.5m), 10s period, WNW swell with 1,255 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 10PM (local time) - 8ft (2.4m), 10s 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 Friday (Aug 07) at 10PM. The primary swell is predicted to be 2.4m and 10s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Kilcummin Harbour in the next 16 days are 2.5m 10s and forecast to arrive on Friday (Aug 07) at 4PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Saturday (Aug 08) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Fri 7th Aug) | 8ft (2.4m) 10s |
| Best Surf | 10PM (Fri 7th Aug) | 8ft (2.4m) 10s |
| Most Powerful | 4PM (Fri 7th Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright, Rusty here, giving you the lowdown for Kilcummin Harbour.
We’ve got a bit of a rough start. Friday the 7th has a 7ft to 8ft swell from the WNW, but that moderate cross-off breeze is going to mess it up. Water temp is about normal for the season. The energy’s moderate at 638, but it’s not clean enough to bother.
Saturday the 8th is better. The morning has 6ft from the WNW with a clean offshore wind, though it’s a bit marginal. The afternoon is where it’s at: 6ft from the west, gentle cross-off breeze, 532 energy. That’s your first real chance for a few good ones.
Sunday the 9th morning is clean with a light breeze and 6ft, but the wind turns cross-on in the afternoon, so hit it early. Monday the 10th is smaller – 3ft to 4ft – but the morning has a light offshore and clean conditions, perfect for a longboard session.
The middle of the week is a bit quiet. Tuesday the 11th through Thursday the 13th morning is small and weak (under 3ft), with energy dropping to 125 to 140. It’s surfable, but nothing special. Then Thursday the 13th morning is a real highlight: 6ft from the west, 585 energy, and a light offshore. The swell’s short-period at 10 seconds, but the conditions will be clean and fun.
It drops off again after that. Friday the 14th and Saturday the 15th are poor – 4ft or less, weak energy, and cross-shore winds. Not worth it.
Now, here’s the big one. Sunday the 16th morning: 10ft from the WNW, 1075 energy, and a light offshore breeze. That’s a serious swell for experts only. The period is only 8 seconds, so it’s a bit lumpy, but the power is real. Best of the outlook, but it’s over a week away, so keep an eye on it.
Monday the 17th and Tuesday the 18th are a letdown – onshore winds and messy waves. Wednesday the 19th has 7ft from the west, but a moderate cross-shore makes it look better for kites than paddling.
The other standout is Thursday the 20th: another 10ft from the WNW, but with a 10-second period and 1518 energy. The morning has light cross-off winds and clean conditions, the afternoon has a moderate offshore. That’s a proper expert session if the forecast holds.
Friday the 21st and Saturday the 22nd fizzle out with messy, windy conditions as the swell fades.
So, the two best bets are Sunday the 16th morning and Thursday the 20th. Both are big, powerful, and only for the experienced. The 20th looks a bit cleaner. If you’re an expert, that’s the one to watch.
Rusty.
Short Range ForecastLight rain (total 6mm), mostly falling on Sat night. Very mild (max 17°C on Fri morning, min 13°C on Thu night). Winds decreasing (fresh winds from the WSW on Fri morning, light winds from the NW by Sun afternoon). | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed morning. Warm (max 24°C on Tue afternoon, min 13°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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 | WNW 10 | WNW 10 | WNW 9 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | NW 8 | N 11 | N 10 | N 10 | N 9 | WSW 10 | WSW 9 | WSW 9 | W 12 | W 10 | W 10 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 631 | 1255 | 898 | 506 | 528 | 552 | 446 | 405 | 223 | 96 | 326 | 233 | 146 | 80 | 214 | 119 | 113 | 294 | 580 | 484 | 270 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-on | cross | off | cross-on | cross-off | cross-off | off | off | off | off | cross-off | off | cross-off | cross-off |
High Tide | 12:54PM2.57m | 1:26AM2.61m | 2:20PM2.64m | 2:57AM2.62m | 3:40PM2.86m | 4:15AM2.77m | 4:44PM3.18m | 5:15AM2.96m | 5:37PM3.50m | 6:06AM3.13m | 6:24PM3.77m | 6:51AM3.25m | 7:07PM3.92m | ||||||||
Low Tide | 6:23AM0.88m | 7:00PM1.06m | 7:48AM0.94m | 8:38PM0.99m | 9:12AM0.86m | 10:00PM0.75m | 10:19AM0.66m | 11:03PM0.45m | 11:12AM0.43m | 11:55PM0.18m | 11:59AM0.22m | 00:41AM-0.01m | 12:41PM0.08m | 1:23AM-0.10m | |||||||
 |  |  |  | |  | | | | | | | |  | | | | | | |  | |
 | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | 6:09 | — | — |
 | — | — | 9:24 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 | — | — | 9:15 | — | — | 9:13 |
mm | — | — | — | 1 | 1 | 2 | 2 | — | — | — | — | — | — | — | — | 2 | — | — | — | 1 | 1 |
Temp °C | 17 | 17 | 14 | 16 | 17 | 15 | 14 | 15 | 14 | 17 | 18 | 19 | 20 | 24 | 21 | 20 | 21 | 19 | 20 | 19 | 18 |
Feels °C | 11 | 12 | 12 | 11 | 15 | 13 | 14 | 14 | 13 | 17 | 17 | 19 | 16 | 23 | 21 | 19 | 21 | 20 | 19 | 18 | 17 |
Swell 1 Height (m) Direction Period (s) | N 7 | WNW 10 | WNW 10 | WNW 9 | W 9 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | NW 8 | N 11 | N 10 | N 10 | N 9 | WSW 10 | WSW 9 | N 8 | W 12 | W 10 | W 10 | W 9 |
| kJ | 4 | 1255 | 898 | 506 | 528 | 552 | 446 | 405 | 223 | 96 | 326 | 233 | 146 | 80 | 214 | 119 | 12 | 294 | 580 | 484 | 270 |
Swell 2 Height (m) Direction Period (s) | N 6 | — | — | N 10 | N 11 | N 10 | N 9 | N 9 | N 9 | W 8 | NW 9 | NW 8 | NW 7 | WSW 12 | N 9 | N 8 | — | N 8 | N 8 | N 8 | N 11 |
| kJ | 3 | — | — | 2 | 2 | 8 | 15 | 15 | 14 | 63 | 88 | 40 | 19 | 47 | 56 | 22 | — | 5 | 5 | 1 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 10 | — | — | — | — | N 12 | W 8 | W 7 | W 7 | WSW 6 | NNW 7 | NW 7 | — | — | — | — | — |
| kJ | — | — | — | — | 2 | — | — | — | — | 67 | 54 | 24 | 15 | 13 | 5 | 2 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 9 | — | — | S 4 | — | — | — | — | — | — | — | — | SE 3 | SE 3 | SSE 2 | SSE 3 | WSW 9 | — | — | — | — |
| kJ | 631 | — | — | 12 | — | — | — | — | — | — | — | — | 7 | 1 | 1 | 4 | 113 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 226 | 194 | 0 | 11 | 0 | 2 | 0 | 66 | 2 | 0 | 10 | 10 | 10 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 |
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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