
Surf Forecasts:
Kilcummin Harbour surf forecast from 6 Aug 2026:
- Best quality surf: Saturday 8 Aug, 7AM (local time) - 7ft (2.2m), 9s period, WNW swell with offshore winds.
- Most powerful swell: Friday 7 Aug, 7PM (local time) - 8ft (2.5m), 10s period, WNW swell with 1,153 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 Aug, 7AM (local time) - 4.5ft (1.4m), 8s period with N 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 (Aug 06) at 7AM. The primary swell is predicted to be 1.4m and 8s period with a secondary swell of 0.3m and 10s. Another secondary swell of 0.7m and 6s 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 2.5m 10s and forecast to arrive on Friday (Aug 07) at 7PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 5s period and expected on Friday (Aug 07) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Thu 6th Aug) | 4.5ft (1.4m) 8s |
| Best Surf | 7AM (Sat 8th Aug) | 7ft (2.2m) 9s |
| Most Powerful | 7PM (Fri 7th Aug) | 8ft (2.5m) 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 cooking for Kilcummin Harbour. It’s a reef setup that needs a solid NNW swell to really fire, and we’ve got a mixed bag over the next couple of weeks.
The first few days are a bit of a write-off. Thursday the 6th and Friday the 7th are seeing poor surf conditions with cross-off winds and messy, low-energy swell. The swell energy is weak (182) on Thursday, and while it jumps to a moderate 452 on Friday morning, the conditions are still poor. You’d be fighting the wind more than the wave.
Things start to look up on Saturday the 8th. The morning brings a solid 7ft swell from the WNW with a period of 9 seconds and a clean offshore wind from the south. The combined energy is a strong 723, and the wave state is described as “moderate offshore and clean.” This is the standout of the window. The water temp is about average for the time of year, so no nasty surprises. Remember, this is a reef, so with a bit of size it’ll be offering up some proper walls. The crowds are just “sometimes” here, so you might get a few waves to yourself.
Sunday the 9th morning is still okay – 5ft from the WNW with light cross-off winds and clean conditions (438 energy) – but it’s a step down from Saturday. By the afternoon, a cross-shore wind kicks in and the quality drops. Monday the 10th morning brings a clean 4ft north swell with a long 11-second period and offshore winds, giving 458 energy and good conditions. That long period groundswell will wrap nicely into this reef.
After that, we hit a dry spell. From Tuesday the 11th through to Sunday the 16th, the surf is small and ordinary. Swell heights drop below 3ft, with mostly weak energy (under 200) and only occasional clean windows. It’s a long gap of about 5-6 days with no real recommendation. The 16th of August has a tiny 2ft north swell going glassy in the afternoon, but it’s barely surfable.
We get a late pulse around the 19th of August. Wednesday morning shows a 7ft WNW swell with a 10-second period and strong energy of 874, but the wind is cross-off and the forecast is only marginal due to tide or conditions. A bit too far out to get too excited, but keep an eye on it.
So, the best bet is Saturday morning, August 8th. That 7ft WNW swell with clean offshore winds is your ticket. It’s not so big that it’s only for experts, but given the reef and the size, it’s probably not a beginner’s wave either. Sunday the 9th and Monday the 10th mornings are your backup windows. Get in the water when you can.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Sat morning. Very mild (max 17°C on Fri morning, min 13°C on Wed night). Mainly fresh winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 24°C on Tue afternoon, min 13°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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) | N 8 | N 7 | N 7 | WNW 8 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | WNW 9 | W 8 | N 11 | N 10 | N 10 | N 9 | N 8 | WSW 10 | WSW 9 | WSW 10 | WSW 11 |
Wave Graph | |||||||||||||||||||||
144 | 67 | 23 | 445 | 1066 | 901 | 721 | 655 | 456 | 284 | 477 | 187 | 269 | 239 | 186 | 76 | 50 | 109 | 124 | 129 | 161 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross | cross-off | off | on | glassy | off | off | off | off | cross-off | off |
High Tide | 11:42AM2.63m | 00:04AM2.74m | 12:54PM2.57m | 1:26AM2.61m | 2:20PM2.64m | 2:57AM2.62m | 3:40PM2.86m | 4:15AM2.77m | 4:44PM3.18m | 5:15AM2.96m | 5:37PM3.50m | 6:06AM3.13m | 6:24PM3.77m | ||||||||
Low Tide | 5:18AM0.72m | 5:36PM0.95m | 6:23AM0.88m | 7:00PM1.06m | 7:48AM0.94m | 8:38PM0.99m | 9:12AM0.86m | 10:00PM0.75m | 10:19AM0.66m | 11:03PM0.45m | 11:12AM0.43m | 11:55PM0.18m | 11:59AM0.22m | 00:41AM-0.01m | |||||||
5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:03 | — | — | 6:05 | — | — | 6:07 | — | — | |
— | — | 9:27 | — | — | 9:24 | — | — | 9:22 | — | — | 9:21 | — | — | 9:19 | — | — | 9:16 | — | — | 9:15 | |
mm | — | — | — | — | — | — | 3 | 1 | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 16 | 16 | 14 | 17 | 17 | 15 | 16 | 17 | 16 | 19 | 20 | 16 | 20 | 20 | 18 | 23 | 24 | 21 | 21 | 21 | 18 |
Feels °C | 12 | 12 | 11 | 11 | 11 | 13 | 13 | 16 | 15 | 17 | 16 | 15 | 19 | 19 | 17 | 20 | 21 | 20 | 17 | 17 | 17 |
Swell 1 Height (m) Direction Period (s) | N 8 | N 7 | N 7 | N 7 | WNW 10 | WNW 10 | WNW 9 | WNW 9 | WNW 9 | WNW 8 | N 9 | W 8 | W 8 | N 10 | N 10 | N 9 | N 8 | WSW 10 | WSW 9 | N 8 | WSW 11 |
144 | 67 | 23 | 4 | 1066 | 901 | 721 | 655 | 456 | 284 | 15 | 187 | 138 | 239 | 186 | 76 | 50 | 109 | 124 | 10 | 161 | |
Swell 2 Height (m) Direction Period (s) | W 10 | W 10 | W 9 | N 6 | N 7 | — | N 10 | N 11 | SW 8 | NW 10 | N 9 | NW 8 | N 11 | W 7 | W 7 | W 7 | W 7 | N 8 | N 8 | N 6 | N 7 |
17 | 30 | 16 | 3 | 1 | — | 2 | 2 | 2 | 139 | 15 | 100 | 269 | 108 | 47 | 23 | 23 | 21 | 11 | 1 | 4 | |
Swell 3 Height (m) Direction Period (s) | — | — | WNW 9 | — | — | — | — | N 10 | N 10 | N 9 | — | N 9 | NW 8 | NW 9 | NW 8 | NW 7 | NW 7 | NW 7 | NW 7 | — | NW 9 |
— | — | 8 | — | — | — | — | 2 | 8 | 15 | — | 14 | 51 | 37 | 23 | 19 | 13 | 7 | 2 | — | 3 | |
Wind waves Height (m) Direction Period (s) | WNW 5 | W 5 | W 5 | WNW 8 | — | — | S 3 | S 3 | — | — | WNW 9 | — | — | — | — | SE 3 | SE 3 | SSE 3 | SSE 3 | WSW 10 | — |
21 | 31 | 42 | 445 | — | — | 8 | 6 | — | — | 477 | — | — | — | — | 2 | 2 | 4 | 2 | 129 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 122 | 235 | 11 | 2 | 194 | 2 | 0 | 2 | 0 | 0 | 61 | 0 | 0 | 10 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
Best forecast wave conditions in Mayo and Achill Island | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Latest Updates
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.











