Surf Forecasts:
Kilcummin Harbour surf forecast from 30 Jul 2026:
- Best quality surf: Friday 31 Jul, 1AM (local time) - 4.5ft (1.3m), 7s period, W swell with cross-offshore winds.
- Most powerful swell: Monday 3 Aug, 7PM (local time) - 5ft (1.5m), 11s period, N swell with 556 kJ wave energy.
- Next surfable swell (1★+): Friday 31 Jul, 1AM (local time) - 4.5ft (1.3m), 7s period with W 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 (Jul 31) at 1AM. The primary swell is predicted to be 1.3m and 7s period with a secondary swell of 0.9m and 8s. 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 1.5m 11s and forecast to arrive on Monday (Aug 03) at 7PM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 31st Jul) | 4.5ft (1.3m) 7s |
| Best Surf | 1AM (Fri 31st Jul) | 4.5ft (1.3m) 7s |
| Most Powerful | 7PM (Mon 3rd Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright crew, Rusty here. Gonna give it to you straight about Kilcummin Harbour. We're staring down a pretty bleak stretch for the next week and a half, so don't get your hopes up too soon.
The next 10 days or so are a total loss. From Thursday, July 30th right through to Tuesday, August 11th, it's a surf desert. The swell is tiny, the wind is almost always cross or onshore, and the energy is junk. You'll see numbers like 320 (moderate wave energy) at best, but mostly it's down in the weak range, with a lot of it under 100. The wave reports just keep saying "poor surf conditions." It's a bust.
Then, out of the blue, things get a little interesting. There's a glimmer of hope on Wednesday, August 12th. The morning shows a clean 6ft swell from the west with a gentle offshore wind from the south. The combined energy jumps to 303 (moderate wave energy) and it's actually looking surfable. The afternoon gets even better: 7ft swell from the west, a light cross-offshore breeze, and the energy rockets up to 632 (strong wave energy). That's a solid session. The period is only 7-8 seconds, so it's a windswell, not a groundswell, meaning the waves will be a bit lumpy and sectiony, but it's better than nothing.
Thursday, August 13th keeps the run going with a morning of 6ft west swell and a clean offshore wind again, energy at 539 (strong wave energy). The period stretches to 9 seconds, which is a touch better. The afternoon gets a bit messy with a cross-shore wind, but the morning is the real deal.
So, the only real call in this whole 16-day window is the Kilcummin Harbour session on Wednesday morning, August 12th. That's the standout. The 7ft afternoon on the 12th and the morning on the 13th are also very good, but the cleanest and most consistent window is that Wednesday morning. It's a reef break here, so with a 6ft to 7ft west swell, it'll be a proper size for intermediates, but it might be pushing it for beginners. The winds are finally playing nice. Get on it if you can.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri morning. Very mild (max 16°C on Fri afternoon, min 12°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Sun morning, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | |||||||||||||||
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) | W 8 | W 7 | W 7 | W 7 | W 7 | WNW 6 | WNW 6 | NW 7 | NW 7 | NW 8 | NW 8 | N 9 | N 9 | N 9 | N 11 | N 10 | N 10 | N 9 | N 9 | N 8 | W 10 |
Wave Graph  | |||||||||||||||||||||
 kJ | 142 | 150 | 152 | 157 | 113 | 75 | 70 | 100 | 121 | 142 | 154 | 102 | 117 | 189 | 514 | 156 | 414 | 80 | 53 | 68 | 35 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-off | cross | cross | cross-off | cross | cross-on | glassy | cross | cross-on | off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | on |
High Tide | 7:06AM2.91m | 7:25PM3.44m | 7:39AM2.96m | 7:56PM3.50m | 8:12AM2.97m | 8:28PM3.50m | 8:46AM2.96m | 9:00PM3.43m | 9:21AM2.91m | 9:35PM3.31m | 10:00AM2.84m | 10:14PM3.15m | 10:46AM2.74m | 11:02PM2.95m | |||||||
Low Tide | 12:59PM0.37m | 1:36AM0.39m | 1:30PM0.32m | 2:07AM0.34m | 2:02PM0.32m | 2:39AM0.33m | 2:34PM0.38m | 3:12AM0.36m | 3:09PM0.48m | 3:47AM0.44m | 3:48PM0.62m | 4:28AM0.56m | 4:35PM0.79m | ||||||||
 | |  |  | |  | |  |  |  | | | | | | | | | | | | |
 | 5:43 | — | — | 5:46 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — |
 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:35 | — | — | 9:32 | — | — | 9:30 | — | — | 9:29 |
mm | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 13 | 15 | 16 | 14 | 16 | 16 | 14 | 16 | 16 | 15 | 15 | 16 | 16 | 15 | 16 | 14 | 15 | 15 | 14 |
Feels °C | 9 | 9 | 10 | 11 | 11 | 11 | 13 | 12 | 12 | 14 | 14 | 13 | 12 | 12 | 14 | 12 | 14 | 12 | 12 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | N 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 | N 7 | NW 7 | NW 8 | NW 8 | N 9 | N 9 | N 12 | W 9 | N 10 | W 9 | N 9 | N 9 | NW 7 | N 8 |
| kJ | 127 | 136 | 94 | 58 | 45 | 28 | 17 | 16 | 121 | 142 | 154 | 102 | 117 | 68 | 6 | 156 | 6 | 80 | 53 | 8 | 35 |
Swell 2 Height (m) Direction Period (s) | NW 7 | — | — | W 12 | W 11 | WSW 10 | WSW 9 | WSW 9 | N 10 | N 9 | N 9 | NW 8 | NW 7 | NW 7 | W 9 | W 9 | W 11 | W 10 | N 5 | W 11 | W 10 |
| kJ | 51 | — | — | 3 | 2 | 20 | 26 | 25 | 90 | 104 | 102 | 75 | 34 | 16 | 6 | 6 | 2 | 17 | 7 | 21 | 33 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | NW 8 | N 11 | WSW 8 | WSW 8 | WSW 10 | W 10 | W 9 | W 9 | — | — | — | NW 7 | W 10 | W 9 | NW 6 |
| kJ | — | — | — | — | — | — | 10 | 3 | 14 | 7 | 19 | 16 | 7 | 7 | — | — | — | 2 | 18 | 6 | 10 |
Wind waves Height (m) Direction Period (s) | W 8 | W 7 | W 7 | W 7 | W 7 | WNW 6 | WNW 6 | NW 7 | — | — | — | NNE 4 | — | N 9 | N 11 | N 5 | N 10 | N 6 | — | N 8 | NNE 4 |
| kJ | 142 | 150 | 152 | 157 | 113 | 75 | 70 | 100 | — | — | — | 13 | — | 189 | 514 | 59 | 414 | 62 | — | 68 | 8 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 550 | 597 | 0 | 31 | 531 | 0 | 233 | 247 | 0 | 10 | 55 | 0 | 37 | 39 | 39 | 39 | 37 | 112 | 112 | 506 | 112 |
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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