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Surf Forecasts:
Crab Island surfForecast / Clare / Ireland
48hr Weather and Surf, issued 12 pm Thursday 21 May 2026 ISTForecast update in hr min s Forecast update imminent
Crab Island surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Crab Island sea temperature is
11.5° C
(Which is normal for this time of year)How big are the waves at Crab Island today?
The current surf forecast for Crab Island at 5PM is: 1.5m 10s primary swell from a West-southwest direction and 0.1m 8s secondary swell from a Northwest direction (forecast issued at 12:00pm May 21). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 May) | 5ft (1.5m) | 10s |
| Afternoon (21 May) | 5ft (1.5m) | 10s |
| Evening (21 May) | 5ft (1.5m) | 10s |
Table - waves today at Crab Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Thu afternoon. Very mild (max 16°C on Thu morning, min 11°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | |
419 | 419 | 416 | 425 | 559 | 561 | 627 | 560 | 521 | 452 | 419 | 404 | 331 | 325 | 318 | 188 | 253 | 248 | 230 | 216 | 211 | 248 | 295 | 302 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | |
High Tide | 9:35AM3.90m | 9:51PM4.05m | 10:39AM3.66m | 10:54PM3.83m | 11:46AM3.50m | 00:01AM3.66m | ||||||||||||||||||
Low Tide | 3:21PM0.91m | 4:04AM0.64m | 4:25PM1.18m | 5:16AM0.85m | 5:42PM1.35m | 6:35AM0.96m | ||||||||||||||||||
 | |  | |  | | | | | | | |  | | |  |  | | | |  | | | | |
 | 5:31 | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:26 | — |
 | — | — | — | 9:37 | — | — | — | — | — | — | — | 9:38 | — | — | — | — | — | — | — | 9:40 | — | — | — | 9:42 |
— | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 15 | 16 | 14 | 15 | 14 | 13 | 14 | 13 | 14 | 16 | 15 | 13 | 12 | 12 | 12 | 11 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 12 |
12 | 12 | 10 | 11 | 9 | 9 | 11 | 10 | 11 | 13 | 11 | 9 | 8 | 9 | 9 | 8 | 9 | 10 | 10 | 11 | 12 | 12 | 11 | 10 | |
Swell 1 Height (m) Direction Period (s) | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | — | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 10 | WSW 10 | WSW 10 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 |
 kJ | 419 | 419 | 416 | 425 | 559 | 561 | 627 | 560 | 521 | 452 | 419 | — | 331 | 325 | 318 | 188 | 253 | 248 | 230 | 216 | 211 | 248 | 295 | 302 |
Swell 2 Height (m) Direction Period (s) | NW 10 | NW 8 | NW 8 | NW 8 | NW 7 | — | — | — | — | — | — | — | — | — | — | W 11 | — | — | — | — | SW 14 | SW 14 | SW 14 | SW 14 |
| kJ | 4 | 3 | 3 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | 89 | — | — | — | — | 8 | 8 | 8 | 8 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SSE 3 | SSE 3 | — | S 3 | — | — | — | — | — | WSW 10 | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 3 | 3 | — | 8 | — | — | — | — | — | 404 | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 92 | 99 | 16 | 16 | 92 | 16 | 11 | 11 | 11 | 101 | 138 | 138 | 101 | 16 | 16 | 14 | 101 | 92 | 138 | 92 | 92 | 16 | 16 | 0 |
Best forecast wave conditions in Clare | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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