Surf Forecasts:
Kilcummin Harbour surf forecast from 6 Aug 2026:
- Best quality surf: Saturday 8 Aug, 1AM (local time) - 7.5ft (2.3m), 10s period, WNW swell with offshore winds.
- Most powerful swell: Friday 7 Aug, 4PM (local time) - 8ft (2.5m), 10s period, WNW swell with 1,230 kJ wave energy.
- Next surfable swell (1★+): Saturday 8 Aug, 1AM (local time) - 7.5ft (2.3m), 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 Saturday (Aug 08) at 1AM. The primary swell is predicted to be 2.3m 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 1.0m 5s period and expected on Friday (Aug 07) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Sat 8th Aug) | 7.5ft (2.3m) 10s |
| Best Surf | 1AM (Sat 8th Aug) | 7.5ft (2.3m) 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, let’s break it down.
We’ve got a few days with nothing doing at Kilcummin Harbour – small swell and onshore winds. Hold fire till the weekend.
Saturday, August 8th is the pick. Expect 6ft waves from the WNW in the morning with a light offshore breeze out of the S – clean and well-formed. The combined swell energy is at 566, so decent punch. Water temp is about 61°F, slightly warmer than average. By afternoon, waves hold at 6ft from the W with light offshore winds again – still glassy. Combined energy jumps to 584. This is your best window.
Sunday, August 9th is still good. Morning brings 5ft from WNW with cross-off wind, still clean. Afternoon goes glassy, with 5ft from WNW – silky smooth. Energy drops to 325, but the quality makes up for it.
Monday, August 10th the swell fades. Morning has 3ft from the N with a 10-second period – that’s long-period groundswell, which can be fickle at beach breaks. Winds are cross-off, so clean but small. Afternoon sees 4ft but the wind turns cross-on, making for lumpy conditions.
After that, it’s a lean stretch. Tuesday through Wednesday (Aug 11-12) stays small and weak, with onshore winds and energy readings in the 80-100 range. Wednesday, August 19th shows a brief uptick: 3ft to 4ft from the WNW with a very long 12-second period. That’s legit groundswell, but it’s accompanied by strong winds (15-19 mph) and energy in the 344 range – only moderate. The rest is flat or blown out, especially from Aug 15 onward.
This reef break can be inconsistent, so a few days of quiet isn’t unusual. When the wind’s howling and the energy is moderate, it may be better for kite surfing than paddle surfing.
Best call? Saturday, August 8th – clean offshore winds, solid 6ft waves, moderate energy. Sunday for glassy smaller waves if you want to work on technique.
Rusty.
Short Range ForecastMostly dry. Very mild (max 17°C on Thu morning, min 13°C on Thu night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Tue night. Warm (max 24°C on Tue afternoon, min 15°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | N 8 | N 7 | N 7 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | W 9 | WNW 9 | WNW 9 | WNW 8 | NW 8 | N 10 | N 10 | N 10 | N 9 | N 8 | WSW 10 | WSW 9 | WSW 10 | WSW 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 144 | 67 | 23 | 573 | 1230 | 939 | 564 | 580 | 383 | 366 | 256 | 132 | 164 | 245 | 186 | 99 | 50 | 223 | 133 | 365 | 510 |
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-off | off | off | off | cross-off | cross-off | glassy | cross-off | cross-off | cross-on | cross-off | off | off | off | off | cross-off | cross-off |
High Tide | 11:42AM2.63m | 00:04AM2.74m | 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 | ||||||||
Low Tide | 5:36PM0.95m | 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 | ||||||||
 |  |  | |  | | | |  | | | | | | | | |  | | | | |
 | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — |
 | — | — | 9:27 | — | — | 9:24 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 | — | — | 9:15 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 17 | 16 | 14 | 17 | 17 | 15 | 16 | 17 | 16 | 16 | 16 | 16 | 19 | 18 | 17 | 22 | 24 | 20 | 22 | 21 | 17 |
Feels °C | 13 | 11 | 11 | 11 | 11 | 13 | 12 | 14 | 15 | 15 | 17 | 16 | 18 | 17 | 16 | 20 | 21 | 18 | 17 | 16 | 14 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 7 | N 7 | N 7 | WNW 10 | WNW 10 | WNW 9 | W 9 | WNW 9 | WNW 9 | WNW 8 | NW 8 | WNW 8 | N 10 | N 10 | N 9 | N 8 | WSW 10 | WSW 9 | N 8 | WSW 10 |
| kJ | 144 | 67 | 23 | 4 | 1230 | 939 | 564 | 580 | 383 | 366 | 256 | 132 | 138 | 245 | 186 | 99 | 50 | 223 | 133 | 5 | 510 |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 9 | — | N 7 | — | N 10 | N 11 | SW 7 | N 9 | NW 9 | W 8 | N 10 | WNW 8 | W 7 | W 7 | W 6 | N 8 | N 8 | — | N 8 |
| kJ | 17 | 30 | 16 | — | 1 | — | 2 | 2 | 8 | 15 | 55 | 84 | 164 | 102 | 36 | 15 | 22 | 32 | 11 | — | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | WNW 9 | — | — | — | — | N 10 | N 10 | — | N 9 | N 9 | NW 10 | — | NW 8 | NW 8 | NW 8 | NNW 7 | NW 7 | — | N 15 |
| kJ | — | — | 8 | — | — | — | — | 2 | 8 | — | 14 | 25 | 4 | — | 22 | 20 | 14 | 5 | 2 | — | 4 |
Wind waves Height (m) Direction Period (s) | WNW 5 | W 5 | W 5 | WNW 9 | — | — | S 3 | S 4 | — | — | — | — | — | — | — | SE 3 | SE 3 | SSE 3 | SSE 3 | WSW 10 | — |
| kJ | 28 | 20 | 52 | 573 | — | — | 8 | 6 | — | — | — | — | — | — | — | 3 | 2 | 3 | 2 | 365 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 131 | 235 | 11 | 226 | 194 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 111 | 0 | 0 | 0 | 0 | 0 | 171 | 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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