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Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 11 pm Saturday 13 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
12.3° C
(Which is 1.0°C warmer than normal for this time of year)How big are the waves at Porthtowan today?
The current surf forecast for Porthtowan at 3AM is: 3.0m 13s primary swell from a West direction (forecast issued at 11:00pm December 13). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 Dec) | 11ft (3.5m) | 13s |
| Afternoon (14 Dec) | 11ft (3.5m) | 13s |
| Evening (14 Dec) | 11ft (3.5m) | 13s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| 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 | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 14 | 13 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 14 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 3504 | 2914 | 3168 | 3359 | 3891 | 4699 | 3622 | 3612 | 3834 | 3785 | 3397 | 3638 | 4072 | 2920 | 3201 | 3361 | 3180 | 3269 | 3344 | 3436 | 3681 | 3344 | 3253 | 3029 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | on | cross- on | cross- on | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on |
High Tide / height (m) | 12:27AM 4.65 | 12:54PM 4.81 | 1:28AM 4.74 | 1:52PM 4.87 | 2:21AM 4.92 | 2:42PM 5.00 | ||||||||||||||||||
Low Tide / height (m) | 6:23PM 1.76 | 6:47AM 1.90 | 7:23PM 1.76 | 7:48AM 1.83 | 8:16PM 1.67 | 8:41AM 1.67 | ||||||||||||||||||
Sunday 14 | Monday 15 | Tuesday 16 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 8:11 | - | - | - | - | - | - | - | 8:12 | - | - | - | - | - | - | - | 8:14 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:17 | - |
 | |  | |  |  | | |  | |  | |  |  | | | | | | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | 3 | 6 | 8 | 6 | 2 | 2 | 2 | 7 | 3 | - | - | - | - | - | - |
| Temp. °C | 10 | 10 | 10 | 11 | 11 | 11 | 12 | 12 | 12 | 11 | 10 | 11 | 11 | 11 | 10 | 10 | 8 | 9 | 9 | 10 | 10 | 10 | 9 | 9 |
| Feels °C (?) | 4 | 4 | 3 | 4 | 4 | 3 | 4 | 4 | 3 | 3 | 1 | 4 | 8 | 8 | 6 | 5 | 1 | 2 | 2 | 3 | 4 | 4 | 5 | 5 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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