Surf Forecasts:
Kilcummin Harbour surf forecast from 20 Jul 2026:
- Most powerful swell: Saturday 25 Jul, 10AM (local time) - 10ft (3.0m), 10s period, WNW swell with 1,887 kJ wave energy.
Best Forecast Surf Conditions for Kilcummin Harbour this week:
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 10AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 10AM (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 be straight with you – there’s no proper surf worth paddling out for at Kilcummin Harbour over the next 16 days. This reef is fairly consistent and exposed to the north-west, but the wind and swell just aren’t playing ball. Most of the time we’ve got onshore or cross-onshore breeze, short-period junk, and the wave comment says it all: poor surf conditions. The water’s sitting at 63°, which is a good 4° warmer than usual for this time of year – that’s much warmer than normal, but it doesn’t help the waves.
Looking across the window, there are a handful of mornings that flirt with something rideable. On Friday 24 July, a 5-6ft WNW swell rolls in with a 9-second period and a cross-offshore wind from the WSW, leaving the surface clean. The combined energy is moderate (495). Even so, the forecast calls it marginal – probably a tide issue or just not enough push. Same story on Sunday 26 July (5-6ft WNW, 9s, 510 energy) and Monday 27 July (5-6ft W, 9s, 631 energy) – clean enough on the morning sessions but still rated marginal. After that, the swell gets bigger but the wind turns ugly: Wednesday 29 July sees 8ft WNW with a 19 mph cross-onshore – that’s choppy slop, not surf.
The best of the bunch? Honestly, Friday 24 July morning is the only window where you might snag a few knee-to-waist high lines if the tide’s right, but don’t expect much. The rest of the time it’s either too small, too short-period, or blown out. If you’re a local, you know this stretch can go quiet – and this is one of those blank runs. Forecasts can change, but right now there’s nothing to get excited about.
Stay patient,
Rusty
Short Range ForecastMostly dry. Very mild (max 14°C on Wed afternoon, min 11°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Fri night. Very mild (max 18°C on Fri morning, min 13°C on Thu night). Winds increasing (light winds from the WNW on Thu morning, fresh winds from the WSW by Fri night). | ||||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | |||||||||||||||
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) | W 11 | W 10 | NNW 7 | N 6 | NNW 6 | N 6 | NNW 6 | NNW 7 | NNW 6 | W 8 | NNW 6 | NW 9 | WNW 9 | WNW 9 | WNW 11 | WNW 10 | WNW 10 | NW 10 | WNW 9 | WNW 9 | WNW 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 82 | 78 | 82 | 91 | 82 | 76 | 70 | 73 | 40 | 22 | 25 | 101 | 495 | 502 | 1221 | 1887 | 1479 | 979 | 465 | 351 | 318 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | cross-on | cross | cross-on | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross-on | cross-on | on | cross |
High Tide | 10:54AM2.73m | 11:10PM3.07m | 11:44AM2.59m | 00:01AM2.76m | 12:41PM2.49m | 1:02AM2.51m | 1:49PM2.44m | 2:15AM2.38m | 3:03PM2.48m | 3:30AM2.37m | 4:07PM2.60m | 4:31AM2.46m | 4:59PM2.78m | ||||||||
Low Tide | 4:40PM0.72m | 5:28AM0.73m | 5:34PM0.95m | 6:21AM0.94m | 6:41PM1.14m | 7:23AM1.08m | 8:03PM1.23m | 8:34AM1.13m | 9:22PM1.18m | 9:39AM1.07m | 10:24PM1.06m | 10:32AM0.94m | 11:12PM0.90m | ||||||||
 | |  | |  |  | | |  | | | | |  |  | | | | | | | |
 | 5:28 | — | — | 5:30 | — | — | 5:31 | — | — | 5:33 | — | — | 5:33 | — | — | 5:35 | — | — | 5:37 | — | — |
 | — | — | 9:55 | — | — | 9:54 | — | — | 9:52 | — | — | 9:52 | — | — | 9:50 | — | — | 9:49 | — | — | 9:46 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — |
Temp °C | 13 | 13 | 13 | 12 | 12 | 12 | 13 | 14 | 13 | 17 | 17 | 14 | 18 | 17 | 15 | 15 | 15 | 14 | 15 | 16 | 14 |
Feels °C | 10 | 10 | 10 | 8 | 9 | 9 | 10 | 12 | 11 | 15 | 13 | 12 | 13 | 12 | 12 | 11 | 10 | 9 | 12 | 14 | 12 |
Swell 1 Height (m) Direction Period (s) | W 11 | W 10 | W 10 | W 10 | W 9 | W 9 | W 9 | W 9 | NNW 6 | NNW 6 | W 8 | NW 9 | WNW 9 | — | WNW 11 | — | WNW 10 | NW 10 | WNW 9 | WNW 9 | N 11 |
| kJ | 82 | 78 | 69 | 47 | 42 | 27 | 26 | 25 | 40 | 21 | 21 | 101 | 495 | — | 1221 | — | 1479 | 979 | 465 | 351 | 279 |
Swell 2 Height (m) Direction Period (s) | — | NNW 8 | W 18 | — | — | — | — | — | W 9 | W 8 | W 8 | W 8 | — | — | — | — | — | — | N 12 | N 6 | — |
| kJ | — | 14 | 6 | — | — | — | — | — | 24 | 22 | 12 | 20 | — | — | — | — | — | — | 3 | 25 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | W 8 | — | — | — | — | — | — | — | N 11 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 21 | — | — | — | — | — | — | — | 64 | — |
Wind waves Height (m) Direction Period (s) | NNW 6 | NNW 6 | NNW 7 | N 6 | NNW 6 | N 6 | NNW 6 | NNW 7 | — | — | NNW 6 | NW 6 | — | WNW 9 | — | WNW 10 | — | — | N 6 | — | WNW 9 |
| kJ | 36 | 48 | 82 | 91 | 82 | 76 | 70 | 73 | — | — | 25 | 75 | — | 502 | — | 1887 | — | — | 42 | — | 318 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 228 | 1263 | 228 | 251 | 534 | 201 | 201 | 148 | 281 | 118 | 1212 | 31 | 31 | 1859 | 2 | 610 | 1266 | 151 | 55 | 148 | 2 |
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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