Surf Forecasts:
Crab Island surf forecast from 31 Jul 2026:
- Best quality surf: Sunday 2 Aug, 4PM (local time) - 2.5ft (0.7m), 10s period, SW swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 7PM (local time) - 3ft (0.9m), 9s period, SW swell with 128 kJ wave energy.
- Next surfable swell (1★+): Sunday 2 Aug, 4PM (local time) - 2.5ft (0.7m), 10s period with SW 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 Sunday (Aug 02) at 4PM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.3m and 8s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Crab Island in the next 16 days are 0.9m 9s and forecast to arrive on Sunday (Aug 02) at 7PM. Winds are predicted to be offshore 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 (Aug 05) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4PM (Sun 2nd Aug) | 2.5ft (0.7m) 10s |
| Best Surf | 4PM (Sun 2nd Aug) | 2.5ft (0.7m) 10s |
| Most Powerful | 7PM (Sun 2nd Aug) | 3ft (0.9m) 9s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you – this is a tough one to call. We're looking at a 16-day run for Crab Island, and honestly, most of it is a write-off. The surf is tiny, the wind is on it, or it's just plain messy. There's a big empty gap right at the start with no real surf to speak of.
We kick off on Friday, 31st of July. The swell is a weak 4ft from the West, but it's onshore and messy with a 16 mph wind. The water's a touch warmer than normal at 62°F, but that's the only good thing. The combined energy is only 110 – weak. It's a no-go.
Saturday and Sunday, the 1st and 2nd of August, are just as grim. Tiny waves, poor conditions. By Sunday afternoon, we finally see a bit of a pulse with a 2ft swell from the SW and a 10-second period, giving a combined energy of 105 (moderate). The wind is a light cross-offshore, so it's clean, but it's still just "surfable waves but very ordinary conditions." Not worth paddling out for.
The whole first week is a dead loss. We get a slight bump of 4ft from the SW on the 13th of August, with a combined energy of 151 (moderate), but the wind is on it again. It's a tease.
The standout – and I'm scraping the barrel here – is the afternoon of August 15th. The swell is 4ft from the West, with a 7-second period. The combined energy jumps to 176 (moderate). The wind is a moderate cross-onshore from the SW, making it choppy. For an advanced reef break like Crab Island, this is the only window where the swell size is even worth a look. It's not great, but it's the best of a bad lot. The swell direction is West, which is the optimum direction for this spot, so it'll wrap in nicely. Just be prepared for the chop.
Bottom line: If you're a beginner, stay away – this spot is for advanced surfers only. If you're an expert, keep an eye on the 15th, but don't hold your breath. This forecast is a long way out, so things could change, but right now, it's looking like a blank run that's pretty normal for this area.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri morning. Very mild (max 15°C on Fri morning, min 13°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Mon afternoon. Warm (max 20°C on Mon afternoon, min 13°C on Tue night). Winds increasing (light winds from the SSE on Mon night, fresh winds from the NW by Wed afternoon). | ||||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | |||||||||||||||
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 7 | W 7 | WNW 7 | WSW 9 | WSW 8 | WSW 8 | WSW 10 | SW 10 | SW 9 | SW 9 | SW 8 | SW 8 | SW 7 | SW 7 | NW 7 | W 11 | W 11 | NW 5 | W 10 | W 10 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 107 | 107 | 58 | 32 | 24 | 22 | 20 | 96 | 128 | 65 | 35 | 21 | 8 | 7 | 8 | 9 | 9 | 11 | 17 | 16 | 7 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | glassy | off | cross-off | off | off | off | cross-off | cross-on | cross-on | cross | cross | cross-on | cross-on | on | on | cross-on |
High Tide | 7:23PM4.31m | 7:49AM4.02m | 7:56PM4.30m | 8:22AM4.01m | 8:30PM4.21m | 8:58AM3.96m | 9:06PM4.07m | 9:36AM3.86m | 9:48PM3.89m | 10:21AM3.73m | 10:38PM3.67m | 11:16AM3.58m | 11:41PM3.47m | ||||||||
Low Tide | 1:06PM0.57m | 1:31AM0.29m | 1:38PM0.55m | 2:02AM0.29m | 2:11PM0.59m | 2:34AM0.36m | 2:46PM0.69m | 3:09AM0.50m | 3:25PM0.83m | 3:49AM0.70m | 4:11PM1.03m | 4:39AM0.95m | 5:11PM1.23m | ||||||||
 |  |  | |  |  |  | | | | |  | | | | |  | | | | | |
 | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — |
 | — | — | 9:34 | — | — | 9:31 | — | — | 9:30 | — | — | 9:29 | — | — | 9:27 | — | — | 9:24 | — | — | 9:22 |
mm | 1 | — | — | — | — | — | 1 | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — |
Temp °C | 15 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 17 | 20 | 16 | 17 | 17 | 16 | 14 | 16 | 14 | 15 | 15 | 14 |
Feels °C | 10 | 10 | 11 | 12 | 12 | 13 | 12 | 13 | 12 | 14 | 17 | 14 | 16 | 15 | 13 | 9 | 10 | 9 | 11 | 11 | 11 |
Swell 1 Height (m) Direction Period (s) | W 12 | WSW 11 | WSW 9 | WSW 9 | WSW 8 | WNW 6 | NW 7 | SW 10 | SW 9 | SW 9 | SW 8 | SW 8 | SW 7 | SW 7 | NW 7 | NW 6 | W 11 | NW 5 | WNW 5 | W 10 | W 9 |
| kJ | 3 | 11 | 28 | 26 | 24 | 17 | 14 | 96 | 128 | 65 | 35 | 21 | 8 | 7 | 7 | 5 | 9 | 11 | 3 | 16 | 7 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | WSW 8 | WSW 10 | NW 8 | WNW 8 | NW 7 | NW 7 | W 10 | WSW 9 | W 9 | WSW 7 | W 11 | SW 6 | W 10 | W 10 | WNW 5 | NW 4 |
| kJ | — | — | — | — | — | 22 | 20 | 9 | 6 | 2 | 2 | 8 | 8 | 2 | 5 | 9 | 2 | 8 | 17 | 2 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | W 11 | SW 8 | — | — | — | — | N 7 | W 11 | W 11 | W 10 | SW 7 | — | SW 6 | — | — | — |
| kJ | — | — | — | — | — | 2 | 3 | — | — | — | — | 1 | 2 | 2 | 8 | 2 | — | 2 | — | — | — |
Wind waves Height (m) Direction Period (s) | W 7 | W 7 | WNW 7 | WNW 6 | WNW 6 | — | — | — | ESE 2 | — | — | SSE 2 | — | — | NE 3 | NNE 2 | WNW 3 | — | — | — | NE 3 |
| kJ | 107 | 107 | 58 | 32 | 22 | — | — | — | 1 | — | — | 1 | — | — | 2 | 1 | 7 | — | — | — | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 271 | 701 | 101 | 99 | 117 | 12 | 63 | 0 | 0 | 0 | 107 | 67 | 115 | 415 | 164 | 565 | 164 | 291 | 127 | 422 | 608 |
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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