Surf Forecasts:
Kilcummin Harbour surf forecast from 2 Aug 2026:
- Best quality surf: Saturday 8 Aug, 7AM (local time) - 6.5ft (2.0m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 15ft (4.5m), 10s period, WNW swell with 3,628 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 4AM (local time) - 2.5ft (0.8m), 9s period with N 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 03) at 4AM. The primary swell is predicted to be 0.8m and 9s period with a secondary swell of 0.6m and 7s. 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 4.5m 10s and forecast to arrive on Wednesday (Aug 05) at 4PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Aug 04) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Mon 3rd Aug) | 2.5ft (0.8m) 9s |
| Best Surf | 7AM (Sat 8th Aug) | 6.5ft (2.0m) 8s |
| Most Powerful | 4PM (Wed 5th Aug) | 15ft (4.5m) 10s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright, this is Rusty, and I’m looking at the surf outlook for our little corner of the world. We’ve only got one spot on the cards, so let’s dig into it.
The next week and a half is a bit of a mixed bag. We’re starting off with a frustrating wait. The first few days are a write-off, with poor conditions and small, weak swell. The energy is just not there, with combined energy readings barely hitting 252 (moderate) at best early on, and then dropping right off. It’s looking like we’ll be sitting on the beach for a few days.
The first real sign of life comes on Thursday, August 6th morning. It’s not huge, with a 4ft swell from the North, but it’s got a bit of period (8 seconds) and the wind is cross-offshore and light. The water is a touch warmer than normal at 62°, which is a nice bonus. It’s clean, but it’s just a taste.
Then, Friday, August 7th morning looks a bit better. The swell picks up to 5ft from the West, with a 9-second period. The wind is offshore from the SSW, so it’ll be clean. The combined energy is a solid 364 (moderate), so there’s some push. This is a solid choice for a morning session.
But the real standout in this entire forecast is Saturday, August 8th morning. The conditions are looking prime. We’re getting a 6ft swell from the WNW, with a period of 8 seconds. The wind is a whisper-light cross-offshore from the WSW, which is as good as it gets for clean lines. The combined energy is 512 (moderate), and it feels like it’ll have some punch. This is the best on offer in the whole window – a proper clean, fun-size wave for the confident intermediate.
After that, things get messy again. The wind swings onshore, and the swell drops off. There’s a long gap with nothing worth paddling out for. The next flicker of hope is way down the line on Saturday, August 15th morning. The swell is back up to 6ft from the West, with a light offshore wind from the SSW. The combined energy is 477 (moderate), and it’s clean. It’s a promising call, but we’re a week and a half out, so keep your fingers crossed. The swell stays solid through Sunday, but the wind gets a bit more cross-offshore, so it’s still surfable but not as perfect.
The very end of the run, on Monday, August 17th, sees a big 10ft swell from the WNW, but with a cross-onshore wind, it’s going to be a messy, choppy mess. That’s for experts only, if anyone.
For the core of the run, the Kilcummin Harbour reef is the only game in town. It’s fairly consistent, but it’s a reef, so watch your feet.
- Rusty
Short Range ForecastHeavy rain (total 26mm), heaviest during Sun afternoon. Very mild (max 18°C on Mon afternoon, min 13°C on Sun afternoon). Winds increasing (calm on Tue morning, strong winds from the WNW by Wed morning). | Days 5-7 Weather SummaryModerate rain (total 14mm), heaviest on Fri morning. Very mild (max 17°C on Thu afternoon, min 13°C on Wed afternoon). Winds decreasing (fresh winds from the WNW on Wed afternoon, light winds from the WSW by Sat morning). | |||||||||||||||||||
Sun 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | ||||||||||||||
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) | NW 8 | N 9 | N 9 | N 9 | N 9 | N 9 | N 8 | NW 7 | NW 9 | WNW 10 | NNW 8 | N 8 | N 7 | WNW 8 | W 9 | W 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 129 | 99 | 102 | 165 | 164 | 99 | 140 | 428 | 2176 | 3628 | 897 | 169 | 61 | 197 | 351 | 412 | 422 | 509 | 359 | 173 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross | cross-on | cross-off | off | cross-on | cross-on | cross-on | cross | cross | cross-off | cross | cross-off | off | cross-off | cross-off | cross-off | cross-on | cross-on |
High Tide | 9:00PM3.43m | 9:21AM2.91m | 9:35PM3.31m | 10:00AM2.84m | 10:14PM3.15m | 10:46AM2.74m | 11:02PM2.95m | 11:42AM2.63m | 00:04AM2.74m | 12:54PM2.57m | 1:26AM2.61m | 2:20PM2.64m | 2:57AM2.62m | |||||||
Low Tide | 3:12AM0.36m | 3:09PM0.48m | 3:47AM0.44m | 3:48PM0.62m | 4:28AM0.56m | 4:35PM0.79m | 5:18AM0.72m | 5:36PM0.95m | 6:23AM0.88m | 7:00PM1.06m | 7:48AM0.94m | 8:38PM0.99m | ||||||||
 |  |  |  |  |  |  | | | |  | | | | | | | | |  | |
 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — |
 | — | 9:35 | — | — | 9:32 | — | — | 9:30 | — | — | 9:29 | — | — | 9:27 | — | — | 9:24 | — | — | 9:22 |
mm | 4 | 4 | — | — | 6 | 1 | 5 | 3 | 3 | 1 | — | 1 | 1 | 1 | 5 | 4 | 1 | — | — | — |
Temp °C | 14 | 14 | 16 | 18 | 15 | 18 | 18 | 15 | 13 | 14 | 14 | 16 | 17 | 14 | 14 | 15 | 14 | 15 | 15 | 14 |
Feels °C | 12 | 13 | 13 | 16 | 12 | 19 | 18 | 12 | 5 | 7 | 8 | 13 | 13 | 12 | 11 | 12 | 12 | 13 | 13 | 12 |
Swell 1 Height (m) Direction Period (s) | NW 8 | N 9 | N 9 | N 9 | N 9 | N 9 | N 8 | N 8 | — | — | W 10 | N 8 | N 7 | WNW 8 | N 7 | N 7 | N 7 | WNW 8 | WNW 8 | WNW 8 |
| kJ | 129 | 99 | 102 | 165 | 164 | 99 | 140 | 50 | — | — | 18 | 169 | 61 | 197 | 9 | 4 | 4 | 509 | 359 | 173 |
Swell 2 Height (m) Direction Period (s) | N 9 | NW 8 | NW 7 | NW 7 | NW 6 | NW 7 | W 11 | W 10 | — | — | — | W 10 | W 10 | N 6 | N 7 | — | N 11 | N 10 | N 10 | N 9 |
| kJ | 104 | 45 | 17 | 11 | 6 | 2 | 9 | 8 | — | — | — | 17 | 30 | 20 | 4 | — | 2 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | WSW 10 | WSW 9 | SW 9 | WSW 9 | W 9 | W 9 | NW 7 | — | — | — | — | — | — | W 9 | — | — | — | N 7 | N 7 | — |
| kJ | 19 | 35 | 22 | 8 | 2 | 2 | 2 | — | — | — | — | — | — | 6 | — | — | — | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | — | ENE 3 | — | ESE 3 | SE 3 | — | NW 7 | NW 9 | WNW 10 | NNW 8 | WNW 7 | WNW 6 | — | W 9 | W 9 | WNW 8 | — | — | — |
| kJ | — | — | 3 | — | 3 | 3 | — | 428 | 2176 | 3628 | 897 | 144 | 52 | — | 351 | 412 | 422 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 10 | 10 | 10 | 10 | 10 | 0 | 2 | 131 | 148 | 289 | 227 | 0 | 454 | 0 | 0 | 2 | 0 | 0 | 281 | 55 |
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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