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Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 5 am Saturday 06 Dec 2025 GMTForecast update in hr min s Forecast update imminent
Porthtowan surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Porthtowan sea temperature is
12.4° C
(Which is slightly warmer than usual)How big are the waves at Porthtowan today?
The current surf forecast for Porthtowan at 11AM is: 7.5m 17s primary swell from a West direction (forecast issued at 05:00am December 06). The wind direction is predicted to be cross-onshore and the swell rating is 11.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (06 Dec) | 25ft (7.5m) | 17s |
| Afternoon (06 Dec) | 23ft (7.0m) | 17s |
| Evening (06 Dec) | 18ft (5.5m) | 16s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 06 | Sunday 07 | Monday 08 | Tue 09 | |||||||||||||||||||||
| 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 15 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 13 | 12 | 12 | 11 | 11 | 11 | 11 | 11 | 21 | 20 | 19 | 18 | 18 | 18 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 15021 | 23163 | 32413 | 33297 | 27441 | 20568 | 15040 | 11386 | 9534 | 7991 | 7533 | 5911 | 4912 | 2733 | 2301 | 2388 | 3298 | 1848 | 3092 | 7246 | 18246 | 19732 | 16002 | 14589 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- on | cross- on | cross- on | cross- on | cross | cross | cross- off | cross- off | cross | cross- off | cross | cross- on | cross | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off |
High Tide / height (m) | 5:54PM 6.51 | 6:16AM 6.65 | 6:42PM 6.30 | 7:04AM 6.46 | 7:31PM 5.99 | |||||||||||||||||||
Low Tide / height (m) | 11:55AM 0.02 | 12:15AM 0.20 | 12:44PM 0.13 | 1:03AM 0.39 | 1:35PM 0.38 | |||||||||||||||||||
Saturday 06 | Sunday 07 | Monday 08 | Tue 09 | |||||||||||||||||||||
| Sunrise | - | - | 8:03 | - | - | - | - | - | - | - | 8:04 | - | - | - | - | - | - | - | 8:06 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:17 | - | - | - | - | - | - | - | 4:17 | - | - | - | - | - | - | - | 4:17 | - | - | - |
 |  |  |  | | | | | | |  | | |  |  | | | | | | | | |  | |
Rain (mm) | 1 | - | - | - | - | - | - | - | 2 | 1 | 1 | 1 | - | - | - | - | - | - | 1 | - | - | - | 1 | 6 |
| Temp. °C | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 | 14 | 13 | 12 | 12 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 13 | 13 |
| Feels °C (?) | 1 | 1 | 0 | 1 | 3 | 4 | 7 | 8 | 9 | 8 | 7 | 7 | 6 | 7 | 6 | 7 | 7 | 8 | 6 | 6 | 7 | 7 | 8 | 4 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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