
Surf Forecasts:
Kilcummin Harbour surf forecast from 2 Aug 2026:
- Best quality surf: Saturday 8 Aug, 4AM (local time) - 6.5ft (2.0m), 8s period, WNW swell with offshore winds.
- Most powerful swell: Wednesday 5 Aug, 4PM (local time) - 13ft (4.0m), 9s period, NW swell with 2,263 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 4AM (local time) - 3.5ft (1.1m), 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 Sunday (Aug 02) at 4AM. The primary swell is predicted to be 1.1m and 8s period with a secondary swell of 0.8m and 9s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Kilcummin Harbour in the next 16 days are 4.0m 9s and forecast to arrive on Wednesday (Aug 05) at 4PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Monday (Aug 03) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Sun 2nd Aug) | 3.5ft (1.1m) 8s |
| Best Surf | 4AM (Sat 8th Aug) | 6.5ft (2.0m) 8s |
| Most Powerful | 4PM (Wed 5th Aug) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s be straight with you: it’s a tough stretch coming up for Kilcummin Harbour. The first week is honestly a write-off with messy wind and small, weak swell. There’s a real gap of about 13 days without anything worth paddling out for. The only flicker of hope lands on Sunday, August 16th, but it’s a long way off and comes with its own challenges.
Right off the bat, the picture is grim. From Saturday the 1st through to Saturday the 15th, conditions are mostly poor. The water’s a touch warmer than normal for this time of year at 61°F, but you won’t be feeling it while you’re getting chopped up by onshores. The first few days serve up tiny surf with weak wave energy (176 down to 56), and the wind is cross-on or cross-off, rarely clean. Even when the wind does go offshore on Sunday the 2nd morning, the swell is only 4 ft from the NW with a short period of 8 seconds, giving you weak, gutless waves. Combine that with the moderate energy (258) and it’s barely worth the walk.
Mid-week gets worse. By Thursday the 6th, the swell bumps to 7 ft from the NNW with moderate energy (522), but the cross-onshore wind at 12 mph chops it to pieces. A bit of a tease. Friday the 7th sees the swell shift more WNW, 5 ft to 5 ft, but again, strong cross-shore wind at 15-19 mph kills it.
The whole of the second week is a flat, weak affair. Swell drops to 2 ft and under, with energy readings in the 40s and 50s. Offshore winds on the 13th and some clean windows don’t matter because there’s virtually no swell – 0.7 ft and 4 energy. It’s a dead zone.
Now, the standout – and the only real shot at a wave – is Sunday, August 16th. A solid 12 ft WNW groundswell with a 10-11 second period rolls in, and the combined energy is massive at 2664 to 2719. The wind is cross-off from the WSW at 19 mph, which will keep things clean. But here’s the catch: that size is for experts only. Anything over 8 ft is a heavy paddle, and this reef set-up will be demanding. Also, the period is still moderate – not the long, lined-up groundswell that really suits reefs, so expect some power but not perfect ribbons. It’s a long-range call, so keep an eye on it, but if you’re keen and experienced, pencil in that morning session.
Otherwise, honestly, the kite surfers might get a look-in on some of those windier, choppier days with moderate swell, but for a paddle surfer, it’s slim pickings.
Rusty.
Short Range ForecastHeavy rain (total 27mm), heaviest during Sun night. Very mild (max 16°C on Tue afternoon, min 12°C on Sat night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Wed morning. Very mild (max 17°C on Fri afternoon, min 13°C on Wed morning). Winds decreasing (strong winds from the WNW on Wed morning, light winds from the W by Thu night). | ||||||||||||||||||||
Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | |||||||||||||||
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) | NW 8 | NW 8 | N 9 | N 9 | N 9 | N 9 | N 9 | N 9 | NW 8 | WNW 7 | NW 9 | NW 8 | N 8 | N 7 | W 5 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
Wave Graph | |||||||||||||||||||||
145 | 129 | 99 | 102 | 132 | 169 | 99 | 93 | 392 | 513 | 2263 | 1010 | 259 | 96 | 36 | 388 | 453 | 483 | 509 | 392 | 331 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-on | cross-on | cross | glassy | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-off | off | off | off |
High Tide | 8:46AM2.96m | 9:00PM3.43m | 9:21AM2.91m | 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 | |||||||
Low Tide | 2:34PM0.38m | 3:12AM0.36m | 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 | ||||||||
5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | |
— | — | 9:35 | — | — | 9:32 | — | — | 9:30 | — | — | 9:29 | — | — | 9:27 | — | — | 9:24 | — | — | 9:22 | |
mm | 1 | 5 | 8 | 5 | 1 | 6 | 1 | — | — | 2 | — | — | — | — | — | — | 2 | — | 3 | 2 | 1 |
Temp °C | 13 | 13 | 13 | 13 | 15 | 15 | 15 | 16 | 14 | 14 | 14 | 14 | 14 | 15 | 14 | 16 | 17 | 14 | 13 | 15 | 15 |
Feels °C | 11 | 10 | 12 | 10 | 13 | 13 | 15 | 14 | 10 | 7 | 6 | 8 | 10 | 12 | 12 | 13 | 14 | 12 | 11 | 13 | 15 |
Swell 1 Height (m) Direction Period (s) | NW 8 | NW 8 | N 9 | N 9 | N 9 | N 9 | N 9 | N 9 | N 8 | N 10 | — | W 10 | N 8 | N 7 | N 6 | WNW 9 | N 7 | N 7 | N 10 | N 10 | N 9 |
145 | 129 | 99 | 102 | 132 | 169 | 99 | 93 | 23 | 267 | — | 30 | 259 | 96 | 25 | 388 | 3 | 4 | 2 | 2 | 2 | |
Swell 2 Height (m) Direction Period (s) | N 9 | N 9 | NW 8 | NW 7 | NW 7 | NW 6 | NW 6 | NW 7 | W 10 | — | — | — | W 10 | W 10 | W 9 | N 6 | — | N 11 | N 7 | — | — |
106 | 104 | 45 | 23 | 16 | 6 | 6 | 12 | 8 | — | — | — | 17 | 17 | 28 | 6 | — | 2 | 1 | — | — | |
Swell 3 Height (m) Direction Period (s) | WSW 8 | WSW 10 | SW 9 | SW 9 | WSW 9 | WSW 9 | W 9 | W 11 | — | — | — | — | — | NNW 6 | NW 9 | — | — | — | — | — | — |
7 | 19 | 22 | 22 | 8 | 8 | 6 | 9 | — | — | — | — | — | 4 | 21 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | — | SE 2 | E 3 | NE 3 | — | — | — | NW 8 | WNW 7 | NW 9 | NW 8 | WNW 6 | WNW 6 | W 5 | — | WNW 9 | WNW 8 | WNW 8 | WNW 8 | WNW 8 |
— | — | 1 | 1 | 5 | — | — | — | 392 | 513 | 2263 | 1010 | 80 | 50 | 36 | — | 453 | 483 | 509 | 392 | 331 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 10 | 10 | 0 | 0 | 10 | 37 | 117 | 454 | 730 | 297 | 730 | 83 | 504 | 489 | 2 | 466 | 550 |
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.











