Surf Forecasts:
Kilcummin Harbour surf forecast from 3 Aug 2026:
- Best quality surf: Sunday 9 Aug, 1AM (local time) - 8ft (2.5m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Wednesday 5 Aug, 10AM (local time) - 15ft (4.5m), 10s period, NW swell with 3,746 kJ wave energy.
- Next surfable swell (1★+): Monday 3 Aug, 10PM (local time) - 3.5ft (1.0m), 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 10PM. The primary swell is predicted to be 1.0m and 9s period with a secondary swell of 0.3m 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 10AM. 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 Tuesday (Aug 04) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Mon 3rd Aug) | 3.5ft (1.0m) 9s |
| Best Surf | 1AM (Sun 9th Aug) | 8ft (2.5m) 10s |
| Most Powerful | 10AM (Wed 5th Aug) | 15ft (4.5m) 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 coming up for Kilcummin Harbour.
Right off the bat, I gotta tell ya, it’s a bit of a slow start with onshore junk and flat spells. The first real glimmer of hope shows up on Tuesday the 4th. That morning, we’ve got a clean 3ft of swell from the north, with a light SSE wind blowing offshore. It’s not big, but it’s ridable and the conditions are clean. The water is sitting at 61°, which is a touch warmer than average for this time of year, so that’s a nice bonus.
But the real standout, the one you want to circle, is Sunday the 9th. That morning, we’ve got clean 8ft of swell from the WNW, with a gentle offshore wind. The wave energy is pumping at (1441), and it’s clean. That’s a solid, well-shaped wave for intermediate to advanced surfers. It’s a bit on the bigger side for beginners, though.
Then, keep an eye on Monday the 10th. That morning brings 6ft of swell from the NW, with a light SSE wind making it clean. The energy is still strong (740), and it’s going to be very good out there. Get it while it’s clean.
The end of the run, on Sunday the 16th, looks promising too. A 7ft WNW swell with a slight offshore from the SE and clean conditions. The energy is moderate (606), and it’s an early call, so cross your fingers it holds together.
The rest of the window is a mix of onshore winds, small swell, or straight-up poor conditions. Wednesday the 5th gets hammered by a near gale and 15ft of messy swell – that’s for experts only, and even then, it’s a washing machine. There’s a noticeable gap from about the 12th through the 15th where there’s really nothing worth paddling out for.
Stay sharp, keep an eye on the wind, and don’t sleep on the 9th.
Rusty.
Short Range ForecastModerate rain (total 15mm), heaviest on Wed morning. Very mild (max 19°C on Tue afternoon, min 13°C on Tue night). Winds increasing (light winds from the S on Mon night, strong winds from the WNW by Tue night). | Days 4-6 Weather SummaryLight rain (total 3mm), mostly falling on Thu afternoon. Very mild (max 17°C on Thu morning, min 13°C on Thu night). Winds decreasing (fresh winds from the SW on Fri afternoon, light winds from the SW by Sat night). | ||||||||||||||||||||
Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | |||||||||||||||
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) | N 9 | N 9 | N 9 | N 9 | N 8 | NW 9 | NW 10 | NW 9 | NW 8 | N 7 | W 6 | W 6 | W 8 | W 10 | W 9 | W 9 | WNW 9 | WNW 10 | WNW 10 | WNW 9 | N 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 102 | 129 | 169 | 126 | 161 | 1358 | 3746 | 2423 | 682 | 108 | 77 | 148 | 503 | 1424 | 1790 | 929 | 913 | 1550 | 1116 | 695 | 502 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | off | cross | cross-on | cross | cross | cross-on | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-off | cross | cross-off |
High Tide | 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 | 3:40PM2.86m | |||||||||
Low Tide | 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 | 9:12AM0.86m | 10:00PM0.75m | ||||||||
 | |  |  | | |  | |  | | |  |  | | | | | | | | | |
 | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — |
 | — | — | 9:32 | — | — | 9:30 | — | — | 9:29 | — | — | 9:27 | — | — | 9:24 | — | — | 9:22 | — | — | 9:21 |
mm | — | — | 5 | 1 | 1 | 2 | 5 | — | 1 | — | 1 | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 15 | 17 | 16 | 18 | 19 | 14 | 13 | 14 | 14 | 17 | 16 | 14 | 17 | 16 | 15 | 15 | 15 | 14 | 18 | 18 | 16 |
Feels °C | 13 | 16 | 14 | 18 | 17 | 9 | 4 | 8 | 8 | 13 | 13 | 11 | 10 | 10 | 9 | 11 | 11 | 12 | 16 | 15 | 17 |
Swell 1 Height (m) Direction Period (s) | N 9 | N 9 | N 9 | N 9 | N 8 | — | — | — | N 8 | N 7 | N 7 | N 6 | N 7 | N 7 | — | N 11 | N 11 | WNW 10 | NNW 11 | N 11 | NW 9 |
| kJ | 102 | 129 | 169 | 126 | 161 | — | — | — | 349 | 108 | 45 | 7 | 4 | 1 | — | 3 | 2 | 1550 | 325 | 640 | 502 |
Swell 2 Height (m) Direction Period (s) | NW 7 | NW 7 | NNW 6 | NW 7 | NNW 9 | — | — | — | — | NNW 7 | NNW 6 | W 10 | N 6 | — | — | N 10 | N 10 | N 10 | — | — | N 11 |
| kJ | 17 | 11 | 4 | 2 | 55 | — | — | — | — | 30 | 15 | 17 | 1 | — | — | 2 | 2 | 7 | — | — | 449 |
Swell 3 Height (m) Direction Period (s) | SW 9 | WSW 9 | W 10 | ESE 3 | W 11 | — | — | — | — | W 10 | W 10 | N 8 | — | — | — | — | — | — | — | — | — |
| kJ | 22 | 8 | 2 | 1 | 2 | — | — | — | — | 30 | 17 | 5 | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | E 3 | ENE 4 | ESE 3 | S 8 | — | NW 9 | NW 10 | NW 9 | NW 8 | WNW 6 | W 6 | W 6 | W 8 | W 10 | W 9 | W 9 | WNW 9 | — | WNW 10 | WNW 9 | — |
| kJ | 7 | 11 | 1 | 1 | — | 1358 | 3746 | 2423 | 682 | 66 | 77 | 148 | 503 | 1424 | 1790 | 929 | 913 | — | 1116 | 695 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 10 | 66 | 0 | 0 | 131 | 129 | 194 | 1212 | 420 | 31 | 466 | 0 | 209 | 194 | 233 | 233 | 233 | 0 | 56 | 2 | 0 |
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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