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Castlerock Surf Forecast
/ Londonderry (4 surf breaks) /
Surf Forecasts:
Castlerock surfForecast / Londonderry / Ireland
48hr Weather and Surf, issued 6 pm Monday 01 Jun 2026 BSTForecast update in hr min s Forecast update imminent
Castlerock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castlerock sea temperature is
12.1° C
(Which is slightly warmer than usual)How big are the waves at Castlerock today (02 Jun):
- Afternoon surf: Afternoon surf (02 Jun, local time) - 0.5ft (0.2m), 11s period with W swell.
- Evening surf: Evening surf (02 Jun, local time) - 0.5ft (0.2m), 10s period with W swell.
The current surf forecast for Castlerock at 12AM is: 0.2m 10s primary swell from a West direction (forecast issued at 06:00pm June 01). The wind direction is predicted to be glassy.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (02 Jun) | - | - |
| Afternoon (02 Jun) | 0.5ft (0.2m) | 11s |
| Evening (02 Jun) | 0.5ft (0.2m) | 10s |
Table - waves today at Castlerock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 22mm), heaviest during Mon afternoon. Very mild (max 16°C on Mon afternoon, min 10°C on Tue night). Winds increasing (calm on Mon night, fresh winds from the WNW by Wed night). | ||||||||||||||||||||||||
Mon 1 | Tuesday 2 | Wednesday 3 | Thu 4 | |||||||||||||||||||||
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 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 16 | WNW 16 | WNW 15 | WNW 14 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | NW 4 | NW 5 | NW 5 | |
9 | 9 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | 2 | 5 | 24 | 21 | 40 | 35 | 34 | 33 | 31 | 14 | 14 | 27 | 44 | 47 | 43 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | cross | cross-on | cross | cross | |
High Tide | 7:37PM1.67m | 7:47AM1.48m | 8:12PM1.65m | 8:19AM1.43m | 8:49PM1.62m | 8:52AM1.38m | ||||||||||||||||||
Low Tide | 1:34PM0.28m | 2:10AM0.35m | 2:07PM0.29m | 2:47AM0.40m | 2:41PM0.31m | 3:27AM0.48m | ||||||||||||||||||
 | |  |  | |  | | | | | |  | | |  | | | | |  | | | | | |
 | — | — | — | — | 4:54 | — | — | — | — | — | — | — | 4:52 | — | — | — | — | — | — | — | 4:52 | — | — | — |
 | — | 9:54 | — | — | — | — | — | — | — | 9:55 | — | — | — | — | — | — | — | 9:57 | — | — | — | — | — | 9:59 |
1 | 2 | 1 | — | — | — | — | 1 | 1 | 1 | — | — | — | — | 2 | 2 | 2 | 2 | — | 2 | 1 | 2 | 1 | 1 | |
Temp °C | 16 | 16 | 14 | 12 | 12 | 12 | 13 | 13 | 14 | 13 | 12 | 11 | 10 | 10 | 10 | 11 | 14 | 13 | 12 | 11 | 11 | 11 | 12 | 13 |
16 | 15 | 14 | 12 | 12 | 11 | 12 | 11 | 11 | 10 | 9 | 8 | 7 | 6 | 6 | 8 | 12 | 9 | 9 | 8 | 4 | 5 | 7 | 8 | |
Swell 1 Height (m) Direction Period (s) | W 11 | W 11 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | W 10 | WNW 4 | WNW 5 | WNW 5 | WNW 8 | WNW 7 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | — | WNW 12 | WNW 12 |
 kJ | 9 | 9 | 8 | 8 | 8 | 8 | 2 | 2 | 2 | 2 | 3 | 2 | 5 | 13 | 11 | 34 | 33 | 31 | 14 | 14 | 27 | — | 26 | 26 |
Swell 2 Height (m) Direction Period (s) | NW 5 | NW 5 | — | NW 5 | NW 5 | — | — | — | — | — | W 11 | WNW 16 | WNW 15 | WNW 14 | WNW 13 | WNW 7 | WNW 6 | ESE 5 | WNW 6 | WNW 6 | — | — | — | — |
| kJ | 1 | 1 | — | 1 | 1 | — | — | — | — | — | 2 | 24 | 21 | 40 | 35 | 5 | 4 | 2 | 4 | 3 | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | N 6 | — | — | — | — | — | — | — | W 16 | — | W 9 | — | — | — | E 4 | WNW 6 | E 4 | — | — | — | — | — |
| kJ | — | — | 1 | — | — | — | — | — | — | — | 5 | — | 1 | — | — | — | 1 | 4 | 1 | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | NW 5 | — | NW 2 | NW 2 | NW 3 | — | — | — | — | ESE 2 | — | — | — | — | W 6 | NW 4 | NW 5 | NW 5 |
| kJ | — | — | — | — | — | — | 1 | — | 1 | 2 | 2 | — | — | — | — | 1 | — | — | — | — | 6 | 44 | 47 | 43 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 40 | 42 | 41 | 42 | 42 | 42 | 42 | 144 | 144 | 150 | 42 | 42 | 16 | 8 | 16 | 16 | 42 | 42 | 84 | 84 | 84 | 254 | 254 | 254 |
Best forecast wave conditions in Londonderry | ||||||||||||||||||||||||
Best forecast wave conditions in Ireland | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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