
Surf Forecasts:
Kilcummin Harbour surf forecast from 26 Jul 2026:
- Best quality surf: Monday 27 Jul, 7AM (local time) - 7.5ft (2.3m), 10s period, WNW swell with cross-offshore winds.
- Most powerful swell: Sunday 26 Jul, 1PM (local time) - 11ft (3.5m), 10s period, WNW swell with 2,054 kJ wave energy.
- Next surfable swell (1★+): Monday 27 Jul, 7AM (local time) - 7.5ft (2.3m), 10s period with WNW 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 (Jul 27) at 7AM. The primary swell is predicted to be 2.3m and 10s period with a secondary swell of 0.9m and 10s. Another secondary swell of 0.9m and 10s is also forecast. 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 3.5m 10s and forecast to arrive on Sunday (Jul 26) 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 Wednesday (Jul 29) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Mon 27th Jul) | 7.5ft (2.3m) 10s |
| Best Surf | 7AM (Mon 27th Jul) | 7.5ft (2.3m) 10s |
| Most Powerful | 1PM (Sun 26th Jul) | 11ft (3.5m) 10s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on the cards for Kilcummin Harbour. This is a reef setup, so it needs a bit of respect, and the optimum direction is from the NNW. The water is sitting at 62°, which is a touch warmer than normal for this time of year – nothing crazy, but you’ll notice it’s a little more pleasant than usual.
We’re in for a bit of a dry spell to start. There’s nothing worth paddling out for on Sunday the 26th of July – that's a write-off. Strong cross and cross-onshore winds from the WNW with a big, lumpy 10ft to 12ft swell (combined energy readings of 2064 and 1997) just means messy, blown-out conditions. Not your friend.
The first real chance to get wet comes Monday the 27th of July. The morning shows the swell dropping to a manageable 8ft from the WNW, period at 10 seconds, and the wind swings to a cross-offshore from the West at 12 mph. The energy is still solid at 1229, and the description is clean. Then Monday afternoon is even sweeter: the swell drops to 6ft, the wind eases to a light 6 mph from the SW, still cross-off, and the conditions are described as “expect very good surf conditions.” That combo of a light, clean breeze and a dropping, clean groundswell makes this the standout session of the whole outlook. That 6ft is a great size for a reef – plenty of power, but not too heavy for a confident intermediate.
Tuesday the 28th of July still has some fun waves, but it’s a step down. The morning is 6ft from the West, but the period drops to 8 seconds, making it more of a windswell. The afternoon looks the better bet: 5ft, a true offshore breeze from the SSW at 9 mph, clean conditions. It’s small but clean.
After that, it fades out significantly. Wednesday the 29th through to the start of August is small, weak, or blown out. There’s a brief uptick on Friday the 31st of July with 6ft from the NW and a 9-second period in the afternoon (energy 757), but the wind is a fresh 19 mph cross-off. It’ll be clean, but that fresh breeze will make it bumpy and challenging. Not the best call.
We then hit a long gap. From the 1st of August right through to the morning of Sunday the 9th of August, there’s no solid recommendation. The swell stays small or the wind is howling onshore. It’s a proper flat spell for the area.
The very last chance in the window is on the morning of Sunday the 9th of August. It’s tiny – only 2ft from the North – but the wind is a light cross-off from the SW at 9 mph, and the combined energy is a weak 91. It’s surfable but very ordinary.
So, the clear winner here is Monday the 27th of July. Aim for the afternoon session at Kilcummin Harbour. That light cross-off wind, 6ft WNW swell at 10 seconds, and a clean surface will give you the best waves of the entire 16 days. Don't sleep on it.
Rusty.
Short Range ForecastModerate rain (total 19mm), heaviest on Tue afternoon. Very mild (max 18°C on Mon night, min 14°C on Sun morning). Winds decreasing (fresh winds from the WNW on Sun afternoon, light winds from the SSW by Tue night). | Days 4-6 Weather SummaryLight rain (total 7mm), mostly falling on Wed afternoon. Warm (max 21°C on Wed afternoon, min 12°C on Wed night). Winds increasing (light winds from the WSW on Wed night, fresh winds from the W by Thu morning). | ||||||||||||||||||||
Sunday 26 | Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | |||||||||||||||
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 10 | WNW 10 | WNW 10 | WNW 10 | WNW 10 | W 9 | W 8 | W 8 | W 8 | W 8 | W 8 | W 7 | W 7 | N 8 | WNW 7 | NW 8 | NW 9 | N 10 | N 10 | N 10 | N 10 |
Wave Graph | |||||||||||||||||||||
2064 | 1980 | 1288 | 1064 | 618 | 461 | 427 | 298 | 270 | 153 | 116 | 107 | 112 | 149 | 285 | 427 | 528 | 514 | 392 | 290 | 234 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-on | cross | cross-on | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | cross-off |
High Tide | 4:59PM2.78m | 5:18AM2.59m | 5:41PM2.97m | 5:57AM2.72m | 6:18PM3.16m | 6:33AM2.83m | 6:52PM3.32m | 7:06AM2.91m | 7:25PM3.44m | 7:39AM2.96m | 7:56PM3.50m | 8:12AM2.97m | 8:28PM3.50m | ||||||||
Low Tide | 10:32AM0.94m | 11:12PM0.90m | 11:15AM0.78m | 11:52PM0.74m | 11:53AM0.62m | 00:29AM0.59m | 12:27PM0.47m | 1:03AM0.48m | 12:59PM0.37m | 1:36AM0.39m | 1:30PM0.32m | 2:07AM0.34m | 2:02PM0.32m | 2:39AM0.33m | |||||||
5:37 | — | — | 5:39 | — | — | 5:41 | — | — | 5:41 | — | — | 5:43 | — | — | 5:46 | — | — | 5:48 | — | — | |
— | — | 9:46 | — | — | 9:45 | — | — | 9:44 | — | — | 9:42 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | |
mm | — | — | 1 | 1 | 4 | 5 | — | 6 | 2 | — | 2 | 2 | — | 2 | 1 | — | — | — | — | — | — |
Temp °C | 14 | 15 | 14 | 16 | 16 | 18 | 16 | 18 | 17 | 20 | 21 | 16 | 15 | 14 | 13 | 14 | 16 | 13 | 16 | 17 | 15 |
Feels °C | 8 | 9 | 10 | 13 | 16 | 16 | 13 | 18 | 17 | 17 | 17 | 16 | 8 | 10 | 10 | 8 | 9 | 8 | 13 | 13 | 14 |
Swell 1 Height (m) Direction Period (s) | — | N 10 | WNW 10 | N 10 | WNW 10 | W 9 | N 9 | W 8 | W 8 | W 8 | W 8 | N 9 | N 8 | N 8 | N 8 | NW 8 | NW 9 | N 10 | N 10 | N 10 | N 10 |
— | 17 | 1288 | 165 | 618 | 461 | 111 | 298 | 270 | 153 | 116 | 38 | 90 | 149 | 72 | 427 | 528 | 514 | 392 | 290 | 234 | |
Swell 2 Height (m) Direction Period (s) | — | — | N 9 | — | N 10 | N 10 | N 9 | N 9 | N 9 | N 9 | N 9 | NNW 9 | — | — | — | — | N 11 | W 11 | WNW 6 | NW 7 | NW 7 |
— | — | 132 | — | 198 | 156 | 85 | 81 | 80 | 83 | 58 | 29 | — | — | — | — | 229 | 2 | 66 | 45 | 67 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | W 6 | W 9 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 26 | 15 | |
Wind waves Height (m) Direction Period (s) | WNW 10 | WNW 10 | — | WNW 10 | — | — | W 8 | — | — | SE 3 | — | W 7 | W 7 | W 5 | WNW 7 | — | — | W 6 | — | — | — |
2064 | 1980 | — | 1064 | — | — | 427 | — | — | 2 | — | 107 | 112 | 80 | 285 | — | — | 109 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 451 | 1114 | 233 | 131 | 0 | 2 | 2 | 0 | 0 | 0 | 2 | 534 | 508 | 549 | 2 | 531 | 253 | 2 | 233 | 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.










