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Porthtowan Surf Forecast
/ Cornwall (North) (60 surf breaks) /
Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 11 am Wednesday 21 Jan 2026 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
10.3° C
(Which is normal for this time of year)How big are the waves at Porthtowan today?
The current surf forecast for Porthtowan at 7PM is: 3.5m 10s primary swell from a South-southwest direction and 3.0m 10s secondary swell from a South-southwest direction, 1.5m 13s secondary swell from a West direction (forecast issued at 11:00am January 21). The wind direction is predicted to be cross-offshore and the swell rating is 11.
| Time (GMT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Jan) | 7ft (2.1m) | 13s |
| Afternoon (21 Jan) | 10ft (3.0m) | 9s |
| Evening (21 Jan) | 10ft (3.0m) | 10s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||||||||
| 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 | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 8 | 9 | 10 | 10 | 16 | 16 | 18 | 16 | 16 | 15 | 14 | 14 | 14 | 14 | 13 | 17 | 18 | 17 | 17 | 16 | 17 | 17 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1537 | 1121 | 1441 | 2160 | 1557 | 1794 | 9076 | 15972 | 16996 | 14214 | 11493 | 7985 | 5713 | 3512 | 2068 | 1121 | 36388 | 38106 | 35927 | 29917 | 24194 | 17545 | 17906 | 18782 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | off | off | off | off | cross | cross- on | cross- on | cross- on | cross | off | off | cross- off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off |
High Tide / height (m) | 6:37AM 6.27 | 6:54PM 6.02 | 7:11AM 6.32 | 7:30PM 6.01 | 7:48AM 6.27 | 8:08PM 5.92 | ||||||||||||||||||
Low Tide / height (m) | 1:00PM 0.49 | 1:11AM 0.51 | 1:35PM 0.48 | 1:45AM 0.56 | 2:10PM 0.56 | 2:22AM 0.70 | ||||||||||||||||||
Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||||||||
| Sunrise | 8:08 | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - | 8:07 | - | - | - | - | - | - | - |
| Sunset | - | - | 4:54 | - | - | - | - | - | - | - | 4:55 | - | - | - | - | - | - | - | 4:58 | - | - | - | - | - |
 | |  |  |  | |  | | |  | |  | | | | | |  | | |  |  |  | | |
Rain (mm) | 2 | 1 | 1 | 1 | - | - | - | 1 | 2 | - | - | - | - | 2 | 3 | 2 | 1 | - | 1 | 3 | 9 | 11 | 1 | 1 |
| Temp. °C | 11 | 12 | 11 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 7 | 7 | 8 | 6 | 7 | 7 | 7 | 7 | 6 | 7 | 8 | 8 | 8 |
| Feels °C (?) | 5 | 5 | 6 | 6 | 5 | 4 | 6 | 7 | 3 | 3 | 2 | 2 | 2 | -2 | -7 | -2 | -4 | -5 | -7 | -8 | -8 | -2 | 0 | -1 |
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