Surf Forecasts:
Kilcummin Harbour surf forecast from 15 Aug 2026:
- Best quality surf: Monday 17 Aug, 7AM (local time) - 4ft (1.2m), 8s period, W swell with cross-offshore winds.
- Most powerful swell: Wednesday 19 Aug, 10PM (local time) - 8ft (2.5m), 10s period, WNW swell with 1,422 kJ wave energy.
- Next surfable swell (1★+): Saturday 15 Aug, 10PM (local time) - 4ft (1.2m), 8s period with NW 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 15) at 10PM. The primary swell is predicted to be 1.2m and 8s period with a secondary swell of 0.2m and 9s. 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 2.5m 10s and forecast to arrive on Wednesday (Aug 19) at 10PM. 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 Sunday (Aug 16) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Sat 15th Aug) | 4ft (1.2m) 8s |
| Best Surf | 7AM (Mon 17th Aug) | 4ft (1.2m) 8s |
| Most Powerful | 10PM (Wed 19th Aug) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright folks, Rusty here, and I'm looking at the next couple of weeks for you.
The first few days are a total bust at Kilcummin Harbour. Nothing to even think about until maybe the morning of Sunday the 16th. We've got a dry spell of nothing recommended for the first few days.
On Sunday the 16th, a small 3ft swell from the NW, 8-second period, with a clean offshore wind from the SSE. Water temp is a touch warmer than average for this time of year at 62°. Wave energy is weak (115). It's rideable, but just barely.
Monday the 17th morning is a bit better with 4ft from the W, 8-second period, and clean conditions again. Nothing to write home about, but at least it's not blown out.
The real window is Wednesday the 19th. The morning brings 7ft from the W with a 9-second period and clean cross-off wind at 19 mph. Wave energy is strong (778). By the afternoon, it's pushing 8ft from the W with the same clean wind, and the energy is very strong (1114). This is for experts only – anything over 8ft here is heavy. The swell is coming from the right direction for the reef. If you've got the skill and the crew, the afternoon of the 19th is the only standout in this whole forecast. Just be aware that crowds can pop up.
Then it's back to a mess from Thursday the 20th until Tuesday the 25th, with onshore winds and poor quality. From the 26th it goes tiny and weak, with energy under 50. You might get a clean little knee-high wave on the morning of Thursday the 27th from the WSW, 10-second period and light offshore wind, but that's a longboard-only affair. The rest of the fortnight is flat and ugly.
So, you're looking at the 19th if you're serious. Otherwise, it's a flat, windy spell.
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Mon afternoon. Very mild (max 17°C on Mon afternoon, min 12°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed morning. Very mild (max 16°C on Tue morning, min 13°C on Tue night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 8 | WNW 8 | NW 8 | NW 8 | W 7 | W 9 | W 8 | W 8 | W 8 | W 8 | W 8 | WNW 9 | W 9 | W 9 | WNW 10 | WNW 10 | WNW 9 | WNW 8 | NW 7 | NW 6 | NNW 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 196 | 183 | 167 | 79 | 143 | 220 | 157 | 90 | 283 | 299 | 396 | 599 | 766 | 1102 | 1322 | 717 | 466 | 347 | 135 | 136 | 88 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-off | cross-off | cross-off | cross | on | on | cross-on | on | on | on |
High Tide | 8:27PM3.83m | 8:51AM3.19m | 9:06PM3.60m | 9:28AM3.06m | 9:44PM3.29m | 10:06AM2.89m | 10:23PM2.94m | 10:47AM2.70m | 11:07PM2.61m | 11:38AM2.50m | 00:05AM2.33m | 12:49PM2.36m | 1:31AM2.17m | ||||||||
Low Tide | 2:01PM0.07m | 2:40AM0.04m | 2:40PM0.20m | 3:16AM0.24m | 3:19PM0.40m | 3:51AM0.49m | 3:59PM0.66m | 4:28AM0.76m | 4:45PM0.93m | 5:11AM1.02m | 5:44PM1.18m | 6:11AM1.24m | 7:15PM1.34m | ||||||||
 |  |  |  | |  | | | | | | |  | | | | |  | | | | |
 | 6:11 | — | — | 6:13 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — |
 | — | — | 9:07 | — | — | 9:06 | — | — | 9:04 | — | — | 9:01 | — | — | 9:00 | — | 8:57 | — | — | 8:54 | — |
mm | — | — | — | 1 | — | — | 2 | 2 | — | — | — | — | 1 | 1 | — | 2 | — | 1 | — | — | — |
Temp °C | 16 | 16 | 14 | 16 | 16 | 15 | 16 | 17 | 16 | 16 | 16 | 15 | 15 | 16 | 14 | 16 | 14 | 14 | 14 | 14 | 13 |
Feels °C | 14 | 14 | 12 | 14 | 15 | 13 | 15 | 14 | 14 | 11 | 11 | 10 | 8 | 11 | 10 | 12 | 8 | 9 | 9 | 9 | 8 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | NW 8 | NW 8 | W 7 | N 8 | W 8 | W 8 | N 7 | N 7 | N 7 | N 7 | N 9 | N 8 | N 8 | WNW 10 | WNW 9 | WNW 8 | NW 7 | WSW 8 | W 8 |
| kJ | 196 | 183 | 167 | 79 | 143 | 34 | 157 | 90 | 9 | 9 | 4 | 4 | 6 | 6 | 1 | 717 | 466 | 347 | 135 | 7 | 12 |
Swell 2 Height (m) Direction Period (s) | N 10 | N 9 | WSW 7 | W 6 | NW 8 | NW 7 | N 8 | N 7 | W 19 | W 16 | W 17 | W 18 | W 17 | W 17 | W 16 | N 8 | N 8 | W 15 | W 9 | N 9 | NNE 9 |
| kJ | 16 | 6 | 9 | 22 | 28 | 24 | 30 | 17 | 7 | 5 | 6 | 6 | 6 | 6 | 5 | 1 | 5 | 4 | 14 | 6 | 7 |
Swell 3 Height (m) Direction Period (s) | — | — | N 9 | N 9 | N 9 | — | NNW 7 | W 18 | — | — | — | — | — | — | — | — | W 15 | — | N 9 | W 16 | W 16 |
| kJ | — | — | 6 | 14 | 25 | — | 5 | 6 | — | — | — | — | — | — | — | — | 4 | — | 2 | 5 | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | SSW 3 | W 9 | — | S 2 | W 8 | W 8 | W 8 | WNW 9 | W 9 | W 9 | WNW 10 | — | NNE 4 | — | N 7 | NW 6 | NNW 6 |
| kJ | — | — | — | 5 | 3 | 220 | — | 1 | 283 | 299 | 396 | 599 | 766 | 1102 | 1322 | — | 5 | — | 43 | 136 | 88 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 724 | 0 | 0 | 0 | 2 | 0 | 116 | 235 | 556 | 550 | 194 | 453 | 194 | 256 | 235 | 730 | 261 | 244 | 272 | 130 |
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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