Surf Forecasts:
Kilcummin Harbour surf forecast from 9 Jul 2026:
- Best quality surf: Thursday 9 Jul, 10PM (local time) - 4ft (1.2m), 9s period, W swell with glassy winds.
- Most powerful swell: Friday 10 Jul, 7AM (local time) - 4.5ft (1.4m), 11s period, W swell with 466 kJ wave energy.
- Next surfable swell (1★+): Thursday 9 Jul, 10PM (local time) - 4ft (1.2m), 9s period with W 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 Thursday (Jul 09) at 10PM. The primary swell is predicted to be 1.2m and 9s period with a secondary swell of 0.2m and 13s. 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 1.4m 11s and forecast to arrive on Friday (Jul 10) at 7AM. Winds are predicted to be onshore 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 14) at 10AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Thu 9th Jul) | 4ft (1.2m) 9s |
| Best Surf | 10PM (Thu 9th Jul) | 4ft (1.2m) 9s |
| Most Powerful | 7AM (Fri 10th Jul) | 4.5ft (1.4m) 11s |
Table - best surf conditions forecast for Kilcummin Harbour over the next 16 days.
Alright folks, Rusty here. Let's have a look at what we've got on the cards for the next couple of weeks around here.
Right off the bat, I’m not gonna lie to you—this is a tough stretch. We’ve got a real dry spell ahead, especially for any decent surf. The only real window we have is right at the start, and it’s a narrow one on Thursday, the 9th of July. Kilcummin Harbour will see a clean, rideable swell coming out of the west at 4 ft, with a period of 9 seconds. The water’s sitting at 60°, which is a touch warmer than average for this time of year, so that’s a nice bonus. Thursday morning starts with a light offshore breeze, and by the afternoon it goes glassy. It’s not huge, but it’ll be clean and fun. The combined swell energy is moderate at around 269. It’s a reef break that’s fairly consistent, so you’ll get waves, but it can get a few people out there.
Now, the bad news. After Thursday, the wheels fall off. From Friday the 10th of July all the way through to the end of the forecast, it’s basically a write-off. The wind turns onshore and gets strong, the swell drops to knee-shredding levels, and the quality goes out the window. We get a few days of cross-shore junk, and then a whole lot of howling northerly wind piling into it. Even when the swell tries to pick up again around the 20th–23rd of July, the wind is just straight up messy—onshore, cross-onshore, lumpy, choppy. There’s one spike of 5 ft on Tuesday the 21st, but it’s wind-affected, short-period stuff (7 seconds) with a combined energy of 217, which isn’t bad energy-wise, but the wind’s gonna trash it. That’s strictly for the hardcore crew who don't mind a wrestle. The rest of the time, the combined energy is weak, mostly below 100.
So to sum it up: your one and only standout is Thursday morning, the 9th of July at Kilcummin Harbour (Kilcummin-Harbour). It’s brief, it’s the only clean shot we get. After that, the gear goes back in the van for at least a week or more. Sometimes the forecasts shift, but for now, if you want a paddle, you better be there Thursday.
Rusty.
Short Range ForecastMostly dry. Warm (max 20°C on Thu afternoon, min 12°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Tue afternoon, min 16°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | Wednesday 15 | |||||||||||||||
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 9 | W 9 | W 9 | W 11 | W 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | WNW 8 | WNW 7 | WNW 7 | WNW 7 | W 13 | W 11 | W 10 | W 10 | W 10 | WSW 9 | WSW 9 | W 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 268 | 264 | 185 | 441 | 326 | 282 | 206 | 137 | 69 | 44 | 31 | 16 | 17 | 28 | 61 | 102 | 69 | 47 | 27 | 27 | 12 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | glassy | glassy | on | on | on | on | on | cross-on | cross | cross | cross | cross-off | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on |
High Tide | 1:31PM2.57m | 1:48AM2.81m | 2:42PM2.70m | 3:03AM2.84m | 3:49PM2.90m | 4:14AM2.94m | 4:50PM3.16m | 5:16AM3.07m | 5:44PM3.43m | 6:12AM3.18m | 6:35PM3.67m | 7:03AM3.23m | 7:23PM3.84m | ||||||||
Low Tide | 7:26PM1.03m | 8:16AM0.73m | 8:46PM0.92m | 9:24AM0.64m | 9:59PM0.71m | 10:25AM0.50m | 11:02PM0.46m | 11:20AM0.35m | 11:58PM0.23m | 12:09PM0.21m | 00:50AM0.06m | 12:55PM0.12m | 1:40AM-0.02m | ||||||||
 |  |  | | | |  | |  | | | | | | | | | | | | | |
 | 5:13 | — | — | 5:15 | — | — | 5:16 | — | — | 5:16 | — | — | 5:18 | — | — | 5:20 | — | — | 5:20 | — | — |
 | — | — | 10:08 | — | — | 10:07 | — | — | 10:07 | — | — | 10:06 | — | — | 10:05 | — | — | 10:04 | — | — | 10:02 |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 20 | 17 | 15 | 14 | 13 | 13 | 13 | 14 | 19 | 22 | 20 | 20 | 22 | 19 | 20 | 23 | 21 | 20 | 22 | 22 |
Feels °C | 19 | 21 | 18 | 14 | 11 | 8 | 8 | 8 | 11 | 18 | 21 | 19 | 18 | 22 | 18 | 18 | 21 | 20 | 18 | 20 | 21 |
Swell 1 Height (m) Direction Period (s) | W 9 | W 9 | W 9 | W 11 | W 10 | WNW 10 | WNW 9 | WNW 9 | WNW 8 | NNE 5 | WNW 7 | N 5 | WNW 7 | WNW 7 | W 11 | W 10 | W 10 | W 10 | WSW 9 | WSW 9 | W 8 |
| kJ | 268 | 264 | 185 | 441 | 326 | 282 | 206 | 137 | 68 | 27 | 31 | 12 | 17 | 16 | 61 | 102 | 69 | 47 | 27 | 27 | 12 |
Swell 2 Height (m) Direction Period (s) | N 7 | N 6 | WNW 12 | N 10 | N 10 | — | — | — | N 9 | WNW 8 | — | WNW 7 | NNE 4 | W 13 | WNW 9 | NNE 4 | SW 18 | W 18 | NE 5 | W 16 | W 10 |
| kJ | 1 | 1 | 83 | 2 | 2 | — | — | — | 1 | 44 | — | 16 | 4 | 28 | 32 | 3 | 12 | 6 | 1 | 5 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | N 12 | — | — | — | — | — | — | — | — | W 21 | W 14 | NW 10 | W 8 | W 18 | — | — | W 16 | — | W 16 |
| kJ | — | — | 3 | — | — | — | — | — | — | — | — | 9 | 16 | 4 | 1 | 6 | — | — | 5 | — | 5 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | N 4 | NNE 5 | NNE 5 | NNE 5 | NNE 5 | E 3 | N 5 | ESE 3 | ESE 3 | NE 3 | NE 4 | ESE 3 | ENE 3 | ENE 4 | E 3 | E 3 | ENE 3 |
| kJ | — | — | — | — | 13 | 59 | 61 | 78 | 69 | 1 | 18 | 1 | 2 | 2 | 17 | 3 | 3 | 10 | 5 | 5 | 7 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 55 | 130 | 71 | 39 | 151 | 39 | 11 | 56 | 116 | 256 | 66 | 10 | 10 | 11 | 52 | 66 | 66 | 66 |
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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