Castletown surf forecast from 21 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 7PM (local time) - 5ft (1.6m), 6s period, SSW swell with 173 kJ wave energy.
Best Forecast Surf Conditions for Castletown this week:
The most powerful waves expected at Castletown in the next 16 days are 1.6m 6s and forecast to arrive on Wednesday (Aug 26) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 6s period and expected on Thursday (Aug 27) at 1PM.
| Wave Type | Time (BST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Wed 26th Aug) | 5ft (1.6m) 6s |
Table - best surf conditions forecast for Castletown over the next 16 days.
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Nearest