Surf Forecasts:
Kilcummin Harbour surf forecast from 13 Aug 2026:
- Best quality surf: Thursday 13 Aug, 4AM (local time) - 4ft (1.2m), 10s period, WSW swell with offshore winds.
- Most powerful swell: Thursday 20 Aug, 1AM (local time) - 10ft (3.0m), 9s period, WNW swell with 1,233 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 4AM (local time) - 4ft (1.2m), 10s period with WSW 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 Thursday (Aug 13) at 4AM. The primary swell is predicted to be 1.2m and 10s period with a secondary swell of 0.1m and 7s. 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 3.0m 9s and forecast to arrive on Thursday (Aug 20) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 17) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 13th Aug) | 4ft (1.2m) 10s |
| Best Surf | 4AM (Thu 13th Aug) | 4ft (1.2m) 10s |
| Most Powerful | 1AM (Thu 20th Aug) | 10ft (3.0m) 9s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright, Rusty here, checking the charts for the days ahead. Let’s be straight with you – this isn’t a classic run for Kilcummin Harbour. The next week and a half is a bit of a battle, but there are a couple of windows where you can get wet.
The water is sitting at 61°F, which is a touch warmer than we usually get this time of year, so that’s a nice bonus.
The first real chance comes on the morning of the 13th of August. We’ve got a 4ft swell rolling in from the WSW with a 10-second period, and the wind is a gentle offshore breeze from the south. The energy is moderate (256), and the conditions are looking clean. This is a solid, honest option for an intermediate surfer.
After that, the wind gets messy through the 14th and 15th. The swell does bump up a bit, but it’s onshore and choppy, so it’s not worth paddling out for. There’s a gap of a few days where the scores are low.
Now, here’s the one to circle on your calendar – the morning of the 18th of August. The swell jumps to 6ft from the WSW, with a short 7-second period, coming in with strong energy (341). The wind is a moderate offshore from the SSE, keeping it clean. This is the standout of the forecast. It’s a bit punchy for beginners, but it’s going to be the best offered.
But be warned – that afternoon the same day, the wind absolutely screams in from the WNW at 28 mph, whipping the swell into a messy 8ft. That’s a no-go.
The 19th and 20th see a big, powerful swell (energy readings over 1100 and 895), but with strong cross-shore winds, it’s a lumpy, choppy mess. The setup here looks more interesting for kite surfing than for a clean paddle session.
The last week of the outlook is pretty quiet. Swell sizes drop, and the wind stays onshore or cross-shore. There’s a small window on the 23rd with some clean conditions, but the swell is only 2ft, so it’s just a dribble.
The final reading on the 27th shows the swell fizzling out completely. Honestly, the 18th morning is your best bet, but keep an eye on that wind shift.
Rusty.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu morning. Warm (max 23°C on Thu afternoon, min 13°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 12mm), heaviest on Tue morning. Very mild (max 18°C on Mon afternoon, min 12°C on Sat night). Winds increasing (light winds from the WSW on Sat night, fresh winds from the SSW by Tue morning). | |||||||||||||||||||
Wed 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | ||||||||||||||
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) | WSW 9 | WSW 11 | WSW 10 | W 10 | W 9 | W 9 | W 8 | WNW 7 | WNW 8 | WNW 8 | NW 8 | NW 8 | NW 8 | W 9 | W 8 | WSW 8 | W 7 | WSW 7 | W 9 | WNW 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 126 | 343 | 255 | 235 | 198 | 94 | 133 | 143 | 245 | 224 | 191 | 123 | 86 | 62 | 84 | 87 | 103 | 326 | 1121 | 1051 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | cross-off | cross | cross-on | cross-on | cross | cross-on | cross-on | cross-off | off | cross-off | cross-off | off | cross-off | cross-off | off | cross-on | cross |
High Tide | 6:24PM3.77m | 6:51AM3.25m | 7:07PM3.92m | 7:33AM3.29m | 7:48PM3.95m | 8:12AM3.27m | 8:27PM3.83m | 8:51AM3.19m | 9:06PM3.60m | 9:28AM3.06m | 9:44PM3.29m | 10:06AM2.89m | 10:23PM2.94m | |||||||
Low Tide | 00:41AM-0.01m | 12:41PM0.08m | 1:23AM-0.10m | 1:22PM0.03m | 2:03AM-0.08m | 2:01PM0.07m | 2:40AM0.04m | 2:40PM0.20m | 3:16AM0.24m | 3:19PM0.40m | 3:51AM0.49m | 3:59PM0.66m | ||||||||
 |  |  |  | |  | |  | | |  | | | | | | |  |  | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:18 | — | — |
 | — | 9:15 | — | — | 9:13 | — | — | 9:10 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 |
mm | — | — | 3 | 2 | — | — | — | — | — | — | 2 | 1 | — | — | — | — | — | 9 | 2 | — |
Temp °C | 22 | 20 | 21 | 23 | 16 | 15 | 15 | 14 | 14 | 15 | 14 | 13 | 16 | 15 | 15 | 18 | 15 | 18 | 15 | 15 |
Feels °C | 21 | 21 | 21 | 22 | 15 | 13 | 12 | 11 | 11 | 11 | 13 | 11 | 15 | 14 | 12 | 16 | 13 | 14 | 8 | 11 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 11 | WSW 10 | W 10 | W 9 | W 9 | N 10 | WNW 9 | WNW 8 | WNW 8 | NW 8 | NW 8 | NW 8 | N 8 | W 8 | N 8 | N 8 | N 7 | N 8 | W 18 |
| kJ | 126 | 343 | 255 | 235 | 198 | 94 | 17 | 43 | 245 | 224 | 191 | 123 | 86 | 50 | 84 | 28 | 18 | 10 | 4 | 6 |
Swell 2 Height (m) Direction Period (s) | N 8 | N 7 | N 7 | N 7 | N 11 | N 10 | — | N 9 | N 10 | N 9 | N 9 | N 10 | N 9 | W 9 | N 8 | NW 6 | W 19 | W 16 | W 18 | — |
| kJ | 5 | 4 | 1 | 1 | 2 | 8 | — | 15 | 16 | 15 | 14 | 30 | 58 | 62 | 31 | 1 | 7 | 5 | 6 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | N 9 | — | — | — | — | — | W 8 | WSW 6 | WSW 8 | NW 7 | NW 6 | W 18 | — | — | — | — |
| kJ | — | — | — | — | 2 | — | — | — | — | — | 1 | 8 | 6 | 26 | 6 | 6 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 3 | — | SSE 2 | — | W 4 | WNW 4 | W 8 | WNW 7 | — | — | — | — | — | SSE 3 | S 3 | WSW 8 | W 7 | WSW 7 | W 9 | WNW 8 |
| kJ | 1 | — | 1 | — | 7 | 16 | 133 | 143 | — | — | — | — | — | 3 | 1 | 87 | 103 | 326 | 1121 | 1051 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 2 | 256 | 244 | 244 | 2 | 2 | 775 | 0 | 0 | 0 | 0 | 0 | 2 | 16 | 0 | 185 | 233 |
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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