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Porthtowan Surf Forecast
/ Cornwall (North) (60 surf breaks) /
Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 5 am Friday 05 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
12.6° 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 11AM is: 2.3m 16s primary swell from a West-northwest direction and 3.0m 7s secondary swell from a South-southwest direction (forecast issued at 05:00am December 05). The wind direction is predicted to be cross-offshore.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 Dec) | 10ft (3.0m) | 15s |
| Afternoon (05 Dec) | 6.5ft (2.0m) | 15s |
| Evening (05 Dec) | 16ft (5.0m) | 12s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 05 | Saturday 06 | Sunday 07 | Mon 08 | |||||||||||||||||||||
| 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) (?) | 15 | 15 | 15 | 16 | 15 | 10 | 12 | 13 | 14 | 16 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 14 | 14 | 11 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 7055 | 6408 | 4804 | 2450 | 1846 | 4218 | 7465 | 10793 | 16515 | 26099 | 33008 | 32347 | 28237 | 22899 | 15565 | 11819 | 8159 | 4928 | 3220 | 5478 | 6858 | 6844 | 3492 | 3039 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross | cross | cross- off | cross | cross- on | cross | cross- off |
High Tide / height (m) | 5:06PM 6.56 | 5:28AM 6.70 | 5:54PM 6.51 | 6:16AM 6.65 | 6:42PM 6.30 | |||||||||||||||||||
Low Tide / height (m) | 11:05AM 0.07 | 11:27PM 0.13 | 11:55AM 0.02 | 12:15AM 0.20 | 12:44PM 0.13 | |||||||||||||||||||
Friday 05 | Saturday 06 | Sunday 07 | Mon 08 | |||||||||||||||||||||
| Sunrise | - | - | 8:03 | - | - | - | - | - | - | - | 8:03 | - | - | - | - | - | - | - | 8:04 | - | - | - | - | - |
| Sunset | - | - | - | - | 4:19 | - | - | - | - | - | - | - | 4:17 | - | - | - | - | - | - | - | 4:17 | - | - | - |
 | |  | |  |  |  |  | | | |  |  |  | | | |  | | | | | | | |
Rain (mm) | - | - | 1 | 3 | 5 | - | 1 | 1 | 1 | 1 | 1 | - | - | - | - | - | 1 | 6 | 1 | 3 | - | - | - | - |
| Temp. °C | 9 | 10 | 10 | 11 | 13 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 12 | 12 | 12 |
| Feels °C (?) | 4 | 4 | 2 | 0 | 6 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 2 | 5 | 7 | 7 | 8 | 7 | 6 | 5 | 6 | 5 | 6 | 7 |
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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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