Surf Forecasts:
Crab Island surf forecast from 27 Jul 2026:
- Most powerful swell: Monday 27 Jul, 1PM (local time) - 5ft (1.5m), 10s period, W swell with 417 kJ wave energy.
Best Forecast Surf Conditions for Crab Island this week:
The most powerful waves expected at Crab Island in the next 16 days are 1.5m 10s and forecast to arrive on Monday (Jul 27) at 1PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 2s period and expected on Monday (Aug 03) at 1AM.
| Wave Type | Time (IST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 1PM (Mon 27th Jul) | 5ft (1.5m) 10s |
Table - best surf conditions forecast for Crab Island over the next 16 days.
The Lowdown
Alright, Rusty here, and I gotta be straight with you—this 16-day window for Crab Island is lookin' pretty grim. We’ve got a real long dry spell ahead, so don’t get your hopes up too early.
The first bit of the week is a write-off. From Monday, 27 July right through to the end of the first week, it’s all poor surf conditions. The wind is howling onshore or cross-onshore, mostly from the southwest, with gusts up to 22 mph. That’s whipping up a real mess. The swell is weak, with periods under 10 seconds, and the combined energy values are all under 500 (the highest being 484 on Monday morning), which is moderate but completely ruined by the wind. Honestly, it’s more of a kite-surfing setup than a paddling one. The water temp is 62°F and about 2°F warmer than usual for this time of year, so a touch warmer than normal, but you won’t even notice with that wind in your face.
We then hit a dead zone. From Saturday, 1 August through Wednesday, 6 August, the swell drops to almost nothing—0.7 ft to 1 ft. The combined energy is pathetic, down in the teens and twenties. Sure, the wind goes offshore from the east on a few days, and it’s glassy clean, but there’s just no swell to ride. It’s a long gap of flatness.
The only glimmer of hope—and it’s a long way off—is on Saturday, 8 August. The morning session shows a clean 6 ft swell from the west-northwest, with a period of 8 seconds and a combined energy of 428 (moderate). The wind is glassy, and it’s expected to be good surf conditions. That’s the standout. Crab Island is a reef break, exposed to the west, and while the swell direction is a little off the optimum west, it’ll still wrap in. The offshore wind is east, so it’ll be clean. But listen, this is a week and a half away, so keep an eye on it—forecasts can change. That afternoon, the wind swings hard onshore, so it’s a morning-only play. The 6 ft is a bit hefty for beginners, but for advanced crew, it’s on.
The rest of the run after that fizzles out again quickly. There’s a little bump on 10 August with glassy conditions and 3 ft swell, but it’s weak energy (94) and not worth a paddle.
So, the bottom line: the whole 16-day outlook is a bust except for that one morning on Saturday, 8 August. Everything else is either flat, blown out, or both. The area is known for being inconsistent, so a blank run like this isn’t unusual. We just gotta wait for the next system.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Wed afternoon. Very mild (max 18°C on Tue afternoon, min 14°C on Wed night). Winds decreasing (fresh winds from the SSW on Mon night, light winds from the WNW by Wed afternoon). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Thu morning. Very mild (max 15°C on Fri morning, min 13°C on Sat night). Winds decreasing (strong winds from the WNW on Thu afternoon, calm by Sat night). | ||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | |||||||||||||||
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 10 | W 10 | W 9 | WSW 8 | W 8 | W 8 | W 8 | W 8 | W 8 | W 5 | W 7 | WNW 7 | WNW 6 | WNW 6 | WNW 6 | W 9 | W 9 | W 9 | W 10 | NW 7 | W 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 484 | 400 | 318 | 345 | 272 | 157 | 127 | 124 | 93 | 55 | 261 | 186 | 64 | 60 | 18 | 7 | 15 | 13 | 17 | 16 | 15 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | on | on | on | on | on | glassy | off | cross | off |
High Tide | 5:02PM3.76m | 5:31AM3.62m | 5:41PM3.97m | 6:08AM3.78m | 6:17PM4.14m | 6:42AM3.91m | 6:50PM4.26m | 7:16AM3.99m | 7:23PM4.31m | 7:49AM4.02m | 7:56PM4.30m | 8:22AM4.01m | 8:30PM4.21m | ||||||||
Low Tide | 10:51AM1.15m | 11:20PM0.86m | 11:28AM0.95m | 11:55PM0.65m | 12:02PM0.78m | 00:28AM0.48m | 12:34PM0.65m | 1:00AM0.35m | 1:06PM0.57m | 1:31AM0.29m | 1:38PM0.55m | 2:02AM0.29m | 2:11PM0.59m | 2:34AM0.36m | |||||||
 | |  | | |  | |  | |  | | |  | |  |  | | | | | | |
 | 5:46 | — | — | 5:47 | — | — | 5:48 | — | — | 5:50 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | — | 9:39 | — | — | 9:38 | — | — | 9:37 | — | — | 9:36 | — | — | 9:34 | — | — | 9:31 | — | — | 9:30 |
mm | — | — | — | — | — | 1 | — | 2 | 1 | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 17 | 17 | 18 | 18 | 16 | 15 | 15 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 16 | 17 |
Feels °C | 13 | 13 | 14 | 12 | 15 | 15 | 13 | 13 | 11 | 8 | 6 | 8 | 11 | 10 | 11 | 12 | 12 | 13 | 13 | 14 | 15 |
Swell 1 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 8 | — | — | — | — | W 12 | W 11 | WSW 8 | WNW 6 | W 9 | NW 6 | NW 6 | W 9 | NW 4 |
| kJ | — | — | — | — | — | — | — | 124 | — | — | — | — | 3 | 2 | 6 | 7 | 15 | 8 | 11 | 16 | 4 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | W 10 | W 9 | WSW 7 | W 9 | W 10 | NW 7 | W 9 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 7 | 5 | 13 | 17 | 11 | 15 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | WSW 7 | — | SW 7 | SW 7 | SW 7 | NW 6 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 5 | — | 2 | 2 | 2 | 2 |
Wind waves Height (m) Direction Period (s) | W 10 | W 10 | W 9 | WSW 8 | W 8 | W 8 | W 8 | — | W 8 | W 5 | W 7 | WNW 7 | WNW 6 | WNW 6 | WNW 6 | — | WNW 6 | — | — | — | NE 2 |
| kJ | 484 | 400 | 318 | 345 | 272 | 157 | 127 | — | 93 | 55 | 261 | 186 | 64 | 60 | 18 | — | 11 | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 97 | 97 | 101 | 101 | 138 | 92 | 92 | 127 | 101 | 257 | 257 | 588 | 138 | 696 | 117 | 636 | 630 | 107 | 63 | 67 | 63 |
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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