Surf Forecasts:
Kilcummin Harbour surf forecast from 23 Jul 2026:
- Best quality surf: Monday 27 Jul, 1AM (local time) - 7ft (2.2m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Saturday 25 Jul, 1PM (local time) - 10ft (3.0m), 10s period, WNW swell with 1,700 kJ wave energy.
- Next surfable swell (1★+): Friday 24 Jul, 1AM (local time) - 2.5ft (0.7m), 11s 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 Friday (Jul 24) at 1AM. The primary swell is predicted to be 0.7m and 11s period with a secondary swell of 0.8m and 6s. 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 3.0m 10s and forecast to arrive on Saturday (Jul 25) at 1PM. 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 (Jul 28) at 4AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 1AM (Fri 24th Jul) | 2.5ft (0.7m) 11s |
| Best Surf | 1AM (Mon 27th Jul) | 7ft (2.2m) 10s |
| Most Powerful | 1PM (Sat 25th Jul) | 10ft (3.0m) 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 local patch at Kilcummin Harbour. This is a reef setup, and we’ve got a bit of a mixed bag over the next couple of weeks, so let’s break it down.
The water is sitting at 61°, which is a touch warmer than what we’d usually expect for this time of year – nothing drastic, but a nice little bonus. The forecast kicks off with a bit of a dud. Thursday the 23rd is a write-off with tiny, junky cross-on waves. Forget about it. Friday the 24th sees a jump in size to around 5ft from the WNW (period 9 seconds), but it’s messy with cross-shore winds. The energy is moderate (387), but the quality just isn’t there for a good paddle.
The weekend brings a big pulse of swell. Saturday the 25th has solid 10ft waves from the WNW, with a strong energy reading (1576 to 1666). The trouble is, it’s cross-shore wind and a bit of a chop. This is expert territory at that size, and the conditions aren’t helping. Sunday the 26th is similar, just a bit too lumpy and fresh with the wind. Not worth the hassle for a clean session.
Now, here’s where it gets interesting. Monday the 27th morning is a real standout. We’ve got a 6ft WNW swell with a moderate period (9 seconds) and a clean, gentle offshore wind from the SSW. That’s the kind of combo that’ll have this reef working beautifully. The energy is strong (842) but the shape should be good. This is the pick of the first week. Tuesday the 28th morning is also very solid with offshore winds, holding 6ft from the W. Clean, consistent, and all to ourselves if the crowds are as light as usual for a Tuesday.
The following week sees another big pulse. Monday the 3rd of August is a massive one for experienced surfers. We’re looking at a 8ft WNW swell in the morning, jumping to 12ft from the NW in the afternoon. The energy is off the charts (1443 to 2192). The afternoon session is glassy with next to no wind. That’s a special window for experts only – the power is immense, and the period is 10 seconds, so it’ll have plenty of push. After that, the swell backs off quickly, and the rest of the week looks like poor, onshore junk.
Bottom line: the best bet for a good, clean wave is the Monday the 27th morning session. For the big dogs, the Monday the 3rd of August afternoon is the one to circle on the calendar, but only if you know what you’re doing.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sat night. Very mild (max 18°C on Fri morning, min 13°C on Thu night). Winds increasing (light winds from the NNW on Thu morning, fresh winds from the WSW by Fri night). | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Mon morning. Warm (max 20°C on Tue afternoon, min 12°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||
Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | |||||||||||||||
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) | NNW 6 | NNW 6 | NW 11 | WNW 9 | WNW 8 | WNW 8 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | W 9 | W 9 | W 9 | W 8 | W 9 | WNW 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 25 | 117 | 387 | 361 | 460 | 1576 | 1666 | 1373 | 1559 | 1405 | 904 | 563 | 442 | 442 | 463 | 473 | 279 | 340 | 337 | 374 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross-on | cross-on | cross-off | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 1:49PM2.44m | 2:15AM2.38m | 3:03PM2.48m | 3:30AM2.37m | 4:07PM2.60m | 4:31AM2.46m | 4:59PM2.78m | 5:18AM2.59m | 5:41PM2.97m | 5:57AM2.72m | 6:18PM3.16m | 6:33AM2.83m | 6:52PM3.32m | ||||||||
Low Tide | 8:03PM1.23m | 8:34AM1.13m | 9:22PM1.18m | 9:39AM1.07m | 10:24PM1.06m | 10:32AM0.94m | 11:12PM0.90m | 11:15AM0.78m | 11:52PM0.74m | 11:53AM0.62m | 00:29AM0.59m | 12:27PM0.47m | 1:03AM0.48m | ||||||||
 | |  |  |  |  | | |  | | | |  | | | | |  | | | | |
 | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — |
 | — | — | 9:52 | — | — | 9:50 | — | — | 9:49 | — | — | 9:46 | — | — | 9:45 | — | — | 9:44 | — | — | 9:42 |
mm | — | — | — | — | — | — | — | — | 1 | — | — | — | 4 | — | — | — | — | 1 | — | — | — |
Temp °C | 15 | 15 | 13 | 18 | 18 | 15 | 15 | 16 | 15 | 15 | 15 | 13 | 14 | 16 | 17 | 19 | 20 | 17 | 17 | 17 | 16 |
Feels °C | 14 | 13 | 11 | 13 | 13 | 13 | 11 | 12 | 12 | 10 | 9 | 10 | 11 | 14 | 16 | 16 | 15 | 16 | 13 | 12 | 14 |
Swell 1 Height (m) Direction Period (s) | NNW 6 | NNW 6 | NW 6 | — | — | — | — | WNW 10 | — | — | N 9 | WNW 10 | WNW 9 | WNW 9 | W 9 | W 9 | W 9 | W 8 | W 9 | WNW 9 | WNW 9 |
| kJ | 34 | 25 | 53 | — | — | — | — | 1666 | — | — | 7 | 904 | 563 | 442 | 442 | 463 | 473 | 279 | 340 | 337 | 374 |
Swell 2 Height (m) Direction Period (s) | W 8 | W 8 | NW 11 | — | — | — | — | — | — | — | — | N 12 | N 11 | N 10 | N 10 | N 9 | N 9 | N 8 | N 8 | N 8 | N 8 |
| kJ | 22 | 22 | 117 | — | — | — | — | — | — | — | — | 175 | 279 | 168 | 92 | 41 | 25 | 12 | 12 | 11 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | W 8 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 12 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | WNW 9 | WNW 8 | WNW 8 | WNW 10 | — | WNW 10 | WNW 10 | WNW 10 | — | — | — | — | S 3 | — | — | S 3 | W 3 | — |
| kJ | — | — | — | 387 | 361 | 460 | 1576 | — | 1373 | 1559 | 1405 | — | — | — | — | 3 | — | — | 1 | 3 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 504 | 1187 | 0 | 256 | 1206 | 1093 | 233 | 233 | 171 | 302 | 456 | 0 | 0 | 2 | 0 | 0 | 31 | 0 | 2 | 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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