
Surf Forecasts:
Kilcummin Harbour surf forecast from 29 Jul 2026:
- Best quality surf: Thursday 30 Jul, 1AM (local time) - 3ft (0.9m), 9s period, N swell with cross-offshore winds.
- Most powerful swell: Tuesday 4 Aug, 1AM (local time) - 4.5ft (1.3m), 10s period, N swell with 374 kJ wave energy.
- Next surfable swell (1★+): Thursday 30 Jul, 1AM (local time) - 3ft (0.9m), 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 Thursday (Jul 30) at 1AM. The primary swell is predicted to be 1.1m and 7s period with a secondary swell of 0.9m 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 1.3m 10s and forecast to arrive on Tuesday (Aug 04) at 1AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Wednesday (Aug 05) at 7PM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Thu 30th Jul) | 3ft (0.9m) 9s |
| Best Surf | 1AM (Thu 30th Jul) | 3ft (0.9m) 9s |
| Most Powerful | 1AM (Tue 4th Aug) | 4.5ft (1.3m) 10s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the cards for our neck of the woods over the next couple of weeks. I'll be straight with ya – it's a bit of a slow burn, but there is a proper payoff waiting for those who can be patient.
For the first week or so, honestly, it's pretty grim. We're looking at a long stretch of nothing special from Wednesday the 29th of July all the way through to Friday the 7th of August. You'll see small, weak swells and a lot of cross-shore winds mucking things up. There's a brief moment on Sunday the 2nd of August with a bit of size pushing 4ft from the NW, but it's got a cross-onshore wind, so it's not going to be clean. The water temp is sitting at 61°, which is a touch warmer than usual for this time of year, so at least you won't be freezing while you're staring at the flatness.
The real story is the solid pulse that arrives around the end of the second week. That's where we need to focus our energy. Starting Friday the 7th of August, the energy ramps up big time. The combined swell energy jumps to 980 (moderate) on Friday morning, with a 10ft swell from the west. It's still a bit on the messy side with a cross-shore breeze, but this is the warning shot. Saturday the 8th of August is where it gets interesting. The morning session at Kilcummin Harbour looks best. You've got a solid 8ft swell rolling in from the west, and the wind is light and offshore from the ESE, which is about as good as it gets for a reef break. It'll be clean. That combined energy is 837 (moderate), so it's got some punch. The period is a modest 9 seconds, so it's not a groundswell but it's a proper windswell with plenty of push. This wave is only for experienced surfers – 8ft is solid, so leave the foamies at home.
Then, Sunday the 9th of August is arguably the standout morning. Again at Kilcummin Harbour, we've got another south-easterly offshore wind, but this time it’s a little lighter. The swell is 8ft from the WNW with a combined energy of 1146 (strong). This is the one that has "excellent" conditions written all over it for the experienced crew. The sets will be meaty, the waves will be clean, and if you've got the skills, you'll be having the session of the month. The afternoon will drop back to a much more manageable 6ft from the WNW, still clean but with a bit less grunt. If you can only paddle out once, make it Sunday morning. Given the size and the quality of the offshore wind, that's easily the pick of the whole forecast. Don't expect it to be empty, though; Kilcummin Harbour can get a crowd when it's good, so be ready to share the peak.
So, to sum it up: suffer through the first week and a half, keep an eye on Saturday the 8th, and definitely mark your calendar for Sunday the 9th of August. That’s the one.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Wed morning. Very mild (max 17°C on Wed afternoon, min 12°C on Wed night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Very mild (max 16°C on Sat morning, min 12°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | |||||||||||||||
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 | N 9 | N 9 | N 8 | W 7 | W 7 | W 7 | WNW 6 | WNW 6 | WNW 6 | NW 7 | NW 8 | NW 8 | N 9 | N 9 | N 10 | N 10 | N 10 | N 10 | N 10 |
Wave Graph | |||||||||||||||||||||
229 | 178 | 140 | 157 | 165 | 104 | 113 | 92 | 59 | 44 | 71 | 67 | 227 | 206 | 129 | 159 | 277 | 374 | 156 | 151 | 90 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross |
High Tide | 6:52PM3.32m | 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 | ||||||||
Low Tide | 12:27PM0.47m | 1:03AM0.48m | 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 | ||||||||
5:41 | — | — | 5:43 | — | — | 5:46 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | |
— | — | 9:42 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:35 | — | — | 9:32 | — | — | 9:30 | |
mm | 8 | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 14 | 17 | 14 | 15 | 15 | 13 | 15 | 16 | 13 | 16 | 16 | 13 | 14 | 14 | 14 | 15 | 15 | 15 | 14 | 15 | 15 |
Feels °C | 13 | 14 | 12 | 10 | 9 | 10 | 10 | 12 | 10 | 12 | 12 | 11 | 12 | 11 | 11 | 12 | 11 | 11 | 11 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | WNW 8 | WNW 8 | WNW 7 | N 9 | N 8 | N 8 | N 8 | N 8 | N 8 | N 8 | N 7 | NW 7 | NW 8 | NW 8 | N 9 | N 9 | N 10 | N 10 | N 10 | N 10 | N 10 |
229 | 178 | 140 | 157 | 165 | 92 | 55 | 44 | 42 | 28 | 27 | 67 | 227 | 206 | 129 | 159 | 277 | 374 | 156 | 151 | 90 | |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | N 9 | NNW 8 | — | — | W 12 | W 11 | WSW 10 | WSW 9 | WSW 9 | N 7 | N 9 | N 9 | NW 8 | NW 7 | NW 7 | NW 6 | NW 7 | NW 7 | NNE 5 |
58 | 40 | 133 | 50 | — | — | 3 | 9 | 19 | 27 | 25 | 24 | 81 | 80 | 93 | 33 | 15 | 13 | 8 | 8 | 17 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | W 12 | — | — | NW 8 | WNW 8 | NNW 7 | WSW 8 | WSW 10 | WSW 9 | W 9 | WSW 9 | WSW 9 | W 9 | W 9 | W 10 |
— | — | — | — | — | — | 3 | — | — | 2 | 7 | 21 | 6 | 19 | 17 | 15 | 17 | 16 | 14 | 6 | 17 | |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 8 | W 7 | W 7 | W 7 | W 7 | WNW 6 | WNW 6 | WNW 6 | — | — | — | — | — | NNE 3 | NNE 4 | NNE 4 | — | — |
— | — | — | 147 | 106 | 104 | 113 | 92 | 59 | 44 | 71 | — | — | — | — | — | 1 | 14 | 7 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 171 | 0 | 556 | 601 | 0 | 171 | 769 | 2 | 228 | 531 | 2 | 39 | 55 | 10 | 37 | 163 | 10 | 112 | 10 | 10 |
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.










