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Porthtowan Surf Forecast
/ Cornwall (North) (60 surf breaks) /
Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 6 am Monday 18 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
12.4° C
(Which is normal for this time of year)How big are the waves at Porthtowan today?
The current surf forecast for Porthtowan at 1PM is: 1.9m 11s primary swell from a West direction (forecast issued at 06:00am May 18). An open ocean swell of 0.1m 20s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | 7ft (2.2m) | 12s |
| Afternoon (18 May) | 5ft (1.5m) | 11s |
| Evening (18 May) | 3.5ft (1.0m) | 11s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 13mm), heaviest on Mon afternoon. Very mild (max 15°C on Wed morning, min 10°C on Mon morning). Winds decreasing (strong winds from the SW on Tue afternoon, light winds from the S by Wed night). | ||||||||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
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 | 1 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
WNW 12 | W 12 | W 12 | W 11 | W 11 | WNW 11 | SSW 6 | SW 7 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 10 | WSW 16 | W 14 | W 14 | W 14 | W 13 | W 13 | W 13 | W 12 | WSW 12 | |
579 | 1323 | 1048 | 843 | 535 | 343 | 270 | 509 | 650 | 794 | 900 | 1068 | 1368 | 1556 | 2067 | 6661 | 6766 | 6156 | 5119 | 3864 | 3113 | 2431 | 1897 | 1569 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-off | cross-off | cross-off | |
High Tide | 6:43AM6.64m | 7:06PM6.70m | 7:31AM6.47m | 7:53PM6.54m | 8:20AM6.16m | 8:44PM6.25m | ||||||||||||||||||
Low Tide | 1:04PM0.10m | 1:31AM0.06m | 1:52PM0.29m | 2:21AM0.27m | 2:42PM0.58m | |||||||||||||||||||
 |  |  | | | |  | | | |  | | | |  | | |  | |  | | | | | |
 | 5:30 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | 5:26 |
 | — | — | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:06 | — | — | — | — | — | — | — | 9:07 | — | 9:07 |
— | — | 1 | 1 | 1 | 3 | 2 | 1 | — | — | 1 | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 10 | 10 | 11 | 11 | 11 | 12 | 13 | 12 | 13 | 13 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 14 | 15 | 15 | 14 | 13 | 13 |
4 | 4 | 5 | 6 | 6 | 5 | 6 | 7 | 6 | 7 | 7 | 6 | 5 | 6 | 5 | 8 | 7 | 8 | 9 | 10 | 11 | 11 | 10 | 9 | |
Swell 1 Height (m) Direction Period (s) | WNW 12 | S 14 | W 12 | W 11 | W 11 | WNW 11 | WNW 11 | WNW 9 | WNW 10 | W 15 | W 15 | W 15 | SW 18 | WSW 18 | S 17 | WSW 16 | — | W 14 | W 14 | W 13 | W 13 | W 13 | W 12 | WSW 12 |
 kJ | 579 | 4 | 1048 | 843 | 535 | 343 | 198 | 90 | 20 | 4 | 17 | 17 | 12 | 103 | 6 | 1041 | — | 6156 | 5119 | 3864 | 3113 | 2431 | 1897 | 1569 |
Swell 2 Height (m) Direction Period (s) | S 14 | S 14 | S 14 | S 20 | S 20 | S 19 | — | W 16 | W 16 | — | S 18 | S 18 | — | S 18 | — | — | — | — | — | — | — | — | S 16 | SW 16 |
| kJ | 4 | 4 | 4 | 8 | 7 | 7 | — | 5 | 5 | — | 6 | 6 | — | 6 | — | — | — | — | — | — | — | — | 5 | 10 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | W 16 | S 19 | — | S 13 | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | 5 | 7 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | W 7 | W 12 | — | — | SSW 5 | SW 5 | SSW 6 | SW 7 | SW 8 | SW 8 | SW 8 | WSW 8 | WSW 9 | WSW 9 | WSW 10 | WSW 16 | W 14 | — | — | — | — | — | — | — |
| kJ | 298 | 1323 | — | — | 37 | 119 | 270 | 509 | 650 | 794 | 900 | 1068 | 1368 | 1556 | 2067 | 6661 | 6766 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 194 | 57 | 19 | 208 | 102 | 208 | 272 | 403 | 403 | 210 | 513 | 503 | 503 | 552 | 394 | 368 | 210 | 210 | 210 | 210 | 276 | 17 | 16 | 16 |
Best forecast wave conditions in North Cornwall | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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