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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 Sunday 17 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 2PM is: 2.0m 13s primary swell from a West-northwest direction (forecast issued at 06:00am May 17). An open ocean swell of 0.1m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 4ft (1.2m) | 14s |
| Afternoon (17 May) | 6.5ft (2.0m) | 13s |
| Evening (17 May) | 6.5ft (2.0m) | 12s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastHeavy rain (total 20mm), heaviest during Mon night. Very mild (max 14°C on Tue afternoon, min 9°C on Sun night). Mainly fresh winds. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 7 | WNW 14 | WNW 13 | WNW 13 | W 13 | WNW 12 | W 12 | W 12 | WNW 12 | W 12 | W 12 | W 11 | W 11 | W 11 | W 11 | WNW 10 | SW 7 | SW 7 | SW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | |
247 | 366 | 651 | 1259 | 1606 | 1261 | 1356 | 1565 | 579 | 1227 | 1061 | 771 | 661 | 449 | 275 | 133 | 368 | 375 | 489 | 575 | 638 | 713 | 759 | 931 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross | cross | cross | |
High Tide | 5:57AM6.63m | 6:20PM6.70m | 6:43AM6.64m | 7:06PM6.70m | 7:31AM6.47m | 7:53PM6.54m | ||||||||||||||||||
Low Tide | 12:18PM0.06m | 00:42AM0.00m | 1:04PM0.10m | 1:31AM0.06m | 1:52PM0.29m | |||||||||||||||||||
 |  | | |  | |  | | | | | | | | | |  | | |  |  | | |  | |
 | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | 5:28 |
 | — | — | — | — | — | 9:02 | — | — | — | — | — | — | — | 9:04 | — | — | — | — | — | — | — | 9:06 | — | 9:07 |
— | — | — | — | 1 | 1 | 1 | 1 | 1 | — | 1 | 1 | 1 | 1 | 2 | 4 | 3 | — | 1 | 1 | — | — | — | — | |
Temp °C | 10 | 10 | 11 | 11 | 11 | 10 | 9 | 10 | 10 | 10 | 11 | 12 | 12 | 11 | 11 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 13 |
5 | 5 | 6 | 5 | 5 | 4 | 3 | 3 | 4 | 5 | 6 | 7 | 7 | 6 | 5 | 8 | 8 | 9 | 7 | 6 | 7 | 8 | 7 | 7 | |
Swell 1 Height (m) Direction Period (s) | WNW 14 | WNW 14 | WNW 13 | WNW 13 | W 13 | SW 12 | S 12 | S 12 | WNW 12 | S 14 | W 12 | W 11 | W 11 | W 11 | W 11 | WNW 10 | WNW 10 | WNW 10 | W 15 | W 15 | W 14 | W 13 | W 17 | W 16 |
 kJ | 158 | 366 | 651 | 1259 | 1606 | 6 | 3 | 3 | 579 | 4 | 1061 | 771 | 661 | 449 | 275 | 133 | 75 | 38 | 17 | 17 | 16 | 14 | 138 | 502 |
Swell 2 Height (m) Direction Period (s) | WNW 12 | SW 12 | S 12 | S 12 | S 12 | — | — | — | S 14 | S 14 | S 14 | S 20 | S 20 | S 19 | WSW 6 | W 16 | SW 19 | W 15 | SW 18 | S 18 | SW 18 | W 18 | WNW 13 | S 17 |
| kJ | 47 | 6 | 3 | 3 | 3 | — | — | — | 4 | 4 | 4 | 8 | 7 | 7 | 21 | 5 | 14 | 4 | 13 | 6 | 12 | 25 | 35 | 6 |
Swell 3 Height (m) Direction Period (s) | SW 12 | — | S 12 | — | — | — | — | — | — | — | — | — | — | S 13 | SW 19 | — | W 16 | SW 19 | S 18 | S 13 | W 19 | S 18 | SW 17 | — |
| kJ | 6 | — | 3 | — | — | — | — | — | — | — | — | — | — | 3 | 15 | — | 5 | 14 | 6 | 3 | 7 | 6 | 12 | — |
Wind waves Height (m) Direction Period (s) | WNW 7 | WNW 7 | WNW 7 | — | — | WNW 12 | W 12 | W 12 | W 7 | W 12 | — | — | S 4 | S 4 | S 5 | SSW 6 | SW 7 | SW 7 | SW 7 | WSW 8 | WSW 8 | WSW 8 | WSW 8 | WSW 8 |
| kJ | 247 | 225 | 181 | — | — | 1261 | 1356 | 1565 | 333 | 1227 | — | — | 13 | 18 | 53 | 222 | 368 | 375 | 489 | 575 | 638 | 713 | 759 | 931 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 104 | 57 | 218 | 510 | 527 | 505 | 249 | 218 | 210 | 17 | 17 | 19 | 19 | 5 | 210 | 557 | 403 | 401 | 521 | 578 | 572 | 392 | 210 | 210 |
Best forecast wave conditions in North Cornwall | ||||||||||||||||||||||||
Best forecast wave conditions in United Kingdom | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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