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Castletown Surf Forecast
/ Isle of Man (4 surf breaks) /
Surf Forecasts:
Castletown surfForecast / Isle of Man / UK
48hr Weather and Surf, issued 12 am Monday 18 May 2026 BSTForecast update in hr min s Forecast update imminent
Castletown surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Castletown sea temperature is
10.6° C
(Which is normal for this time of year)How big are the waves at Castletown today?
The current surf forecast for Castletown at 7AM is: 0.6m 6s primary swell from a South-southwest direction and 0.3m 3s secondary swell from a West direction (forecast issued at 12:00am May 18). The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 2ft (0.6m) | 5s |
| Afternoon (18 May) | 1.5ft (0.5m) | 3s |
| Evening (18 May) | 3.5ft (1.0m) | 4s |
Table - waves today at Castletown. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 15mm), heaviest on Mon night. Very mild (max 13°C on Wed morning, min 8°C on Sun night). Winds increasing (light winds from the WSW on Sun night, strong winds from the SSW by Tue afternoon). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
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 | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
SW 5 | SSW 5 | SSW 6 | SSW 5 | SSW 5 | SSW 3 | SSW 4 | S 5 | S 5 | S 6 | S 7 | S 7 | S 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 7 | |
49 | 31 | 24 | 18 | 15 | 5 | 22 | 53 | 99 | 233 | 408 | 337 | 307 | 471 | 620 | 542 | 417 | 352 | 251 | 154 | 115 | 161 | 498 | 557 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-on | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | |
High Tide | 00:32AM5.29m | 12:58PM5.28m | 1:20AM5.31m | 1:51PM5.16m | 2:11AM5.24m | 2:46PM4.96m | ||||||||||||||||||
Low Tide | 6:45AM0.21m | 7:08PM0.36m | 7:36AM0.20m | 7:58PM0.52m | 8:29AM0.29m | 8:51PM0.74m | ||||||||||||||||||
 |  |  |  | | | | | | |  |  | | | | | |  | | | |  | | | |
 | — | 5:11 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:19 | — | — | — | — | — | — | — | 9:21 | — | — | — | — | — | — | — | 9:22 | — |
1 | — | — | — | — | — | — | 1 | 3 | 3 | 2 | 1 | 2 | — | — | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 9 | 8 | 8 | 8 | 9 | 10 | 11 | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 11 | 11 | 11 | 11 | 11 | 11 | 13 | 13 | 13 | 12 |
4 | 4 | 5 | 4 | 5 | 5 | 6 | 4 | 4 | 2 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 5 | 6 | 5 | 7 | 8 | 9 | 8 | |
Swell 1 Height (m) Direction Period (s) | SSW 5 | SSW 5 | SSW 6 | — | — | SW 7 | — | — | SSW 5 | SW 7 | E 5 | E 5 | ESE 5 | — | — | — | S 17 | S 16 | — | SW 15 | SW 14 | — | — | — |
 kJ | 37 | 31 | 24 | — | — | 2 | — | — | 36 | 103 | 16 | 19 | 7 | — | — | — | 6 | 5 | — | 9 | 8 | — | — | — |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | SSW 7 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SW 5 | WNW 4 | W 3 | SSW 5 | SSW 5 | SSW 3 | SSW 4 | S 5 | S 5 | S 6 | S 7 | S 7 | S 6 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 7 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 7 |
| kJ | 49 | 4 | 2 | 18 | 15 | 5 | 22 | 53 | 99 | 233 | 408 | 337 | 307 | 471 | 620 | 542 | 417 | 352 | 251 | 154 | 115 | 161 | 498 | 557 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 152 | 139 | 139 | 139 | 169 | 176 | 176 | 176 | 240 | 240 | 235 | 235 | 222 | 235 | 225 | 225 | 180 | 171 | 171 | 378 | 180 | 300 | 171 | 166 |
Best forecast wave conditions in Isle of Man | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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