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Porthtowan Surf Forecast
/ Cornwall (North) (60 surf breaks) /
Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 12 am Wednesday 20 May 2026 BSTForecast 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 slightly warmer than usual)How big are the waves at Porthtowan today?
The current surf forecast for Porthtowan at 5AM is: 4.0m 14s primary swell from a West direction and 1.3m 8s secondary swell from a South-southwest direction (forecast issued at 12:00am May 20). The wind direction is predicted to be cross-shore and the swell rating is 11.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 13ft (4.0m) | 14s |
| Afternoon (20 May) | 10ft (3.0m) | 13s |
| Evening (20 May) | 8ft (2.5m) | 12s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 18°C on Fri morning, min 12°C on Tue night). Winds decreasing (fresh winds from the WSW on Tue night, calm by Fri afternoon). | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | ||||||||||||||||||||||
1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
WSW 16 | W 14 | W 14 | WSW 14 | W 13 | W 13 | W 13 | W 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | |
6919 | 6612 | 6112 | 5507 | 3922 | 3082 | 2431 | 1901 | 1444 | 1302 | 1047 | 854 | 705 | 619 | 588 | 492 | 598 | 690 | 917 | 711 | 634 | 645 | 622 | 541 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | glassy | on | |
High Tide | 8:20AM6.16m | 8:44PM6.25m | 9:13AM5.76m | 9:39PM5.88m | 10:12AM5.35m | |||||||||||||||||||
Low Tide | 2:21AM0.27m | 2:42PM0.58m | 3:16AM0.59m | 3:37PM0.93m | 4:16AM0.95m | 4:37PM1.28m | ||||||||||||||||||
 | |  |  | | | | |  | | | | | | |  | | | | | | | | | |
 | — | 5:28 | — | — | — | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:07 | — | — | — | — | — | — | — | 9:09 | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 12 | 12 | 13 | 14 | 15 | 14 | 13 | 13 | 13 | 13 | 15 | 16 | 17 | 15 | 15 | 16 | 14 | 14 | 16 | 18 | 18 | 17 | 16 |
6 | 7 | 7 | 8 | 9 | 11 | 10 | 10 | 9 | 9 | 10 | 11 | 12 | 13 | 11 | 11 | 13 | 13 | 13 | 15 | 18 | 17 | 18 | 16 | |
Swell 1 Height (m) Direction Period (s) | WSW 16 | W 14 | W 14 | WSW 14 | W 13 | W 13 | W 13 | W 12 | WSW 12 | WSW 12 | WSW 12 | WSW 11 | WSW 11 | WSW 11 | WSW 10 | WSW 10 | WSW 10 | WSW 10 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 | WSW 11 |
 kJ | 1644 | 6612 | 6112 | 5507 | 3922 | 3082 | 2431 | 1901 | 1444 | 1302 | 1047 | 854 | 705 | 619 | 588 | 492 | 598 | 690 | 917 | 711 | 634 | 645 | 622 | 541 |
Swell 2 Height (m) Direction Period (s) | W 13 | SSW 8 | — | S 7 | — | — | — | — | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | SW 15 | SW 15 | SSW 15 | SW 14 | S 18 | SSW 6 | S 6 | S 6 | S 6 | S 6 |
| kJ | 130 | 196 | — | 52 | — | — | — | — | 10 | 10 | 10 | 9 | 9 | 9 | 8 | 8 | 21 | 8 | 6 | 45 | 41 | 28 | 18 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 18 | S 18 | ESE 4 | S 18 | ESE 4 | ESE 4 | ESE 4 | SW 16 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 6 | 6 | 6 | 6 | 3 | 1 | 1 | 10 |
Wind waves Height (m) Direction Period (s) | WSW 16 | — | SSW 7 | — | SSW 8 | — | — | — | — | — | — | — | — | — | SE 3 | SE 4 | ESE 4 | — | — | — | — | — | — | — |
| kJ | 6919 | — | 172 | — | 123 | — | — | — | — | — | — | — | — | — | 7 | 12 | 5 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 499 | 511 | 210 | 57 | 392 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 5 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 10 |
Best forecast wave conditions in North Cornwall | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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