Surf Forecasts:
Crab Island surf forecast from 12 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 10PM (local time) - 3.5ft (1.1m), 11s period, WSW swell with glassy winds.
- Most powerful swell: Tuesday 18 Aug, 10PM (local time) - 10ft (3.0m), 11s period, W swell with 2,253 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 10PM (local time) - 3.5ft (1.1m), 11s period with WSW swell.
Best Forecast Surf Conditions for Crab Island this week:
The surf forecast for Crab Island over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 10PM. The primary swell is predicted to be 1.1m and 11s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 3.0m 11s and forecast to arrive on Tuesday (Aug 18) at 10PM. 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 2s period and expected on Wednesday (Aug 12) at 7AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 10PM (Wed 12th Aug) | 3.5ft (1.1m) 11s |
| Best Surf | 10PM (Wed 12th Aug) | 3.5ft (1.1m) 11s |
| Most Powerful | 10PM (Tue 18th Aug) | 10ft (3.0m) 11s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright, Rusty here. I’ve been watching the reports for Crab Island, and it’s a reef break that needs a westerly swell. The water is about average for the season.
We’re looking at a long dry spell to kick things off. From Wednesday the 12th through to the morning of Saturday the 22nd, there’s nothing worth paddling out for. The wind is all over the place, and the swell is either tiny or getting torn up. There’s a moment on the morning of the 21st of August where the wind goes glassy, but the swell is a pathetic 2ft, with combined energy of only 85 (weak). It’s surfable, but you’d be desperate.
The only real shot you’ve got is the morning of Saturday the 22nd of August. It’s cloudy, the wind is glassy, and the swell is a much better 5ft out of the WSW with a combined energy of 348 (moderate). The period is 8 seconds, nothing special, but with no wind, the surface will be clean. It’s a reef break, so it’s for the advanced crew, but the conditions are good. That afternoon the wind shifts onshore, so it’s a morning mission only.
The rest of the run looks like more of the same mess. The bigger, windier days around the 18th and 19th might be more interesting for the kite surfing crowd. For the rest of us, it’s a one-day wonder.
Rusty.
Short Range ForecastSome drizzle, heaviest during Thu night. Warm (max 21°C on Wed morning, min 15°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Sun night. Very mild (max 17°C on Mon afternoon, min 12°C on Sat night). Winds decreasing (fresh winds from the NNW on Fri night, calm by Mon morning). | ||||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | |||||||||||||||
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) | WSW 9 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 8 | W 8 | W 8 | W 7 | W 7 | W 7 | NW 7 | W 6 | W 9 | WSW 8 | WSW 7 | WSW 7 | W 8 | W 9 | W 12 |
Wave Graph  | |||||||||||||||||||||
 kJ | 180 | 164 | 324 | 250 | 240 | 135 | 111 | 161 | 149 | 53 | 36 | 35 | 14 | 13 | 15 | 119 | 297 | 237 | 413 | 916 | 2222 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-off | glassy | on | cross-on | cross | cross-on | on | cross-on | cross-on | on |
High Tide | 5:39AM4.22m | 5:51PM4.60m | 6:24AM4.40m | 6:35PM4.76m | 7:07AM4.48m | 7:17PM4.78m | 7:46AM4.45m | 7:56PM4.66m | 8:25AM4.32m | 8:35PM4.42m | 9:02AM4.12m | 9:15PM4.10m | 9:40AM3.86m | 9:56PM3.74m | |||||||
Low Tide | 11:36AM0.38m | 00:05AM-0.10m | 12:18PM0.21m | 00:47AM-0.23m | 12:59PM0.14m | 1:26AM-0.21m | 1:37PM0.19m | 2:03AM-0.04m | 2:15PM0.35m | 2:39AM0.24m | 2:53PM0.59m | 3:15AM0.60m | 3:32PM0.90m | 3:52AM0.99m | |||||||
 | |  |  | |  |  | | | | | | | |  | | |  | | |  | |
 | 6:11 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:18 | — | — | 6:20 | — | — | 6:22 | — | — |
 | — | — | 9:10 | — | — | 9:08 | — | — | 9:07 | — | — | 9:05 | — | — | 9:02 | — | — | 9:00 | — | 8:59 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 6 | — | — | — | — | — | 4 |
Temp °C | 21 | 21 | 19 | 20 | 20 | 16 | 15 | 16 | 15 | 14 | 14 | 14 | 14 | 14 | 15 | 16 | 17 | 15 | 17 | 16 | 15 |
Feels °C | 20 | 20 | 21 | 20 | 20 | 14 | 11 | 12 | 10 | 11 | 9 | 11 | 12 | 12 | 12 | 17 | 16 | 14 | 13 | 9 | 7 |
Swell 1 Height (m) Direction Period (s) | WSW 9 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | W 8 | — | W 8 | W 7 | W 7 | W 7 | NW 7 | W 6 | W 9 | WSW 8 | — | — | — | — | SW 17 |
| kJ | 180 | 164 | 324 | 250 | 240 | 135 | 111 | — | 149 | 53 | 36 | 35 | 14 | 13 | 15 | 119 | — | — | — | — | 12 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | WNW 8 | NW 8 | NW 8 | WSW 7 | NW 7 | W 7 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | 39 | 28 | 15 | 10 | 9 | 8 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | W 6 | W 11 | NW 6 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | 7 | 2 | 2 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | WNW 4 | — | W 8 | — | — | — | — | — | — | — | — | WSW 7 | WSW 7 | W 8 | W 9 | W 12 |
| kJ | — | — | — | — | — | 11 | — | 161 | — | — | — | — | — | — | — | — | 297 | 237 | 413 | 916 | 2222 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 92 | 0 | 16 | 117 | 138 | 376 | 376 | 475 | 12 | 661 | 12 | 63 | 92 | 92 | 14 | 108 | 92 | 139 | 300 | 300 |
Best forecast wave conditions in Clare | |||||||||||||||||||||
Best forecast wave conditions in Ireland | |||||||||||||||||||||
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Information about the Crab Island Surf forecast
The above surf forecast table for Crab Island provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Crab Island can be found by selecting the local surf guide option on the grey menu. Our Crab Island 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 (Crab Island) 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 Crab Island 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.
Are you planning a holiday in Clare? If you are looking for accommodation near Crab Island, camping, hotels and holiday cottages in Clare, consider staying in Galway which is 35 km (22 miles) away. Other places in and around Clare where you can find information about places to rent, and car hire include Inis which is 35 km (22 miles) away, Shannon, Foynes and Limerick.
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