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Surf Forecasts:
Crab Island surfForecast / Clare / Ireland
48hr Weather and Surf, issued 6 pm Monday 18 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
11.3° C
(Which is slightly cooler than normal)How big are the waves at Crab Island today?
The current surf forecast for Crab Island at 10PM is: 1.0m 10s primary swell from a West direction and 0.1m 16s secondary swell from a West direction (forecast issued at 06:00pm May 18). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (IST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | - | - |
| Afternoon (18 May) | 4.5ft (1.3m) | 10s |
| Evening (18 May) | 3.5ft (1.0m) | 10s |
Table - waves today at Crab Island. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon afternoon. Very mild (max 17°C on Thu morning, min 10°C on Mon afternoon). Winds decreasing (strong winds from the SSW on Tue morning, light winds from the SE by Wed night). | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 10 AM | 1 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 10 | W 10 | W 10 | SW 8 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | W 12 | W 12 | W 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | |
279 | 194 | 190 | 151 | 217 | 286 | 439 | 512 | 637 | 2903 | 3593 | 4053 | 3705 | 3394 | 2618 | 2329 | 1622 | 1136 | 879 | 640 | 541 | 520 | 428 | 437 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross | cross-off | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross | cross | cross-on | |
High Tide | 7:10PM4.60m | 7:43AM4.37m | 8:00PM4.47m | 8:37AM4.16m | 8:53PM4.28m | 9:35AM3.90m | ||||||||||||||||||
Low Tide | 1:19AM-0.00m | 1:38PM0.35m | 2:09AM0.15m | 2:27PM0.61m | 3:03AM0.38m | |||||||||||||||||||
 | |  |  | | | | | |  |  | | | |  |  | | | |  | | | | | |
 | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — |
 | — | 9:32 | — | — | — | — | — | — | — | 9:35 | — | — | — | — | — | — | — | 9:36 | — | — | — | — | — | 9:37 |
3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 3 | 2 | — | 1 | — | 1 | — | — | — | — | 1 | — | — | — | — | — | |
Temp °C | 10 | 11 | 12 | 12 | 11 | 12 | 12 | 11 | 11 | 12 | 12 | 11 | 12 | 12 | 12 | 12 | 14 | 15 | 15 | 14 | 14 | 13 | 15 | 17 |
3 | 4 | 8 | 8 | 7 | 5 | 4 | 4 | 3 | 5 | 6 | 4 | 5 | 5 | 6 | 5 | 9 | 12 | 12 | 10 | 10 | 10 | 12 | 14 | |
Swell 1 Height (m) Direction Period (s) | W 10 | W 10 | W 10 | SW 8 | WSW 9 | W 14 | W 13 | W 13 | W 16 | — | — | — | — | — | — | — | — | W 12 | W 12 | W 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 |
 kJ | 279 | 194 | 190 | 151 | 217 | 16 | 14 | 31 | 137 | — | — | — | — | — | — | — | — | 1136 | 879 | 640 | 541 | 520 | 428 | 437 |
Swell 2 Height (m) Direction Period (s) | — | W 16 | W 16 | WNW 10 | W 15 | — | W 18 | W 17 | W 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 5 | 5 | 55 | 17 | — | 7 | 23 | 88 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | W 15 | WNW 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | 4 | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SE 3 | SSE 4 | S 4 | — | — | WSW 9 | WSW 9 | WSW 9 | WSW 9 | WSW 16 | WSW 15 | WSW 14 | WSW 14 | WSW 13 | WSW 13 | WSW 13 | WSW 12 | — | — | S 3 | — | — | — | — |
| kJ | 4 | 14 | 9 | — | — | 286 | 439 | 512 | 637 | 2903 | 3593 | 4053 | 3705 | 3394 | 2618 | 2329 | 1622 | — | — | 2 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 92 | 92 | 101 | 101 | 139 | 139 | 139 | 139 | 139 | 132 | 138 | 138 | 300 | 138 | 138 | 349 | 101 | 97 | 11 | 87 | 87 | 79 | 99 | 101 |
Best forecast wave conditions in Clare | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
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