Surf Forecasts:
How big are the waves at Porthtowan today (20 Aug):
- Afternoon surf: Afternoon surf (20 Aug, local time) - 7ft (2.1m), 9s period with WNW swell.
- Evening surf: Evening surf (20 Aug, local time) - 5.5ft (1.7m), 10s period with W swell.
The current surf forecast for Porthtowan at 10PM is: 1.7m 10s primary swell from a West direction and 0.3m 14s secondary swell from a Southwest direction, 0.6m 5s secondary swell from a North direction (forecast issued at 06:00pm August 20). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | - | - |
| Afternoon (20 Aug) | 7ft (2.1m) | 9s |
| Evening (20 Aug) | 5.5ft (1.7m) | 10s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Short Range ForecastSome drizzle, heaviest during Fri morning. Very mild (max 19°C on Sun morning, min 14°C on Fri night). Wind will be generally light. | |||||||||||||||||||
Thu 20 | Friday 21 | Saturday 22 | |||||||||||||||||
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 |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | WNW 9 | WNW 9 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | WNW 8 | WNW 8 | W 8 | W 9 | W 8 | W 10 | N 6 | N 6 | W 9 | W 9 | SW 15 |
Wave Graph  | |||||||||||||||||||
 kJ | 721 | 655 | 539 | 414 | 287 | 189 | 146 | 137 | 119 | 78 | 50 | 24 | 31 | 67 | 31 | 31 | 29 | 39 | 55 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross | cross-on | cross |
High Tide | 11:20PM4.59m | 11:51AM4.44m | 00:32AM4.24m | 1:16PM4.23m | |||||||||||||||
Low Tide | 5:10PM1.88m | 5:37AM2.10m | 6:16PM2.23m | 6:55AM2.37m | 7:50PM2.36m | ||||||||||||||
 |  |  | | | |  | | | | | | | | | | | | | |
 | — | — | — | — | 6:16 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | — | 8:30 | — | — | — | — | — | — | — | 8:29 | — | — | — | — | — | — | — | 8:27 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 14 | 15 | 15 | 14 | 16 | 18 | 17 | 17 | 16 |
Feels °C | 12 | 12 | 12 | 12 | 12 | 12 | 10 | 10 | 10 | 10 | 11 | 13 | 13 | 12 | 13 | 15 | 13 | 14 | 13 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | W 10 | W 10 | W 9 | W 9 | W 9 | W 8 | WNW 8 | WNW 8 | W 8 | WNW 6 | W 5 | W 10 | N 6 | N 6 | WNW 6 | W 9 | W 9 |
| kJ | 33 | 33 | 539 | 414 | 287 | 189 | 146 | 137 | 119 | 78 | 50 | 24 | 15 | 67 | 31 | 31 | 13 | 39 | 14 |
Swell 2 Height (m) Direction Period (s) | — | SSW 14 | SW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | WSW 8 | WNW 8 | N 5 | W 8 | N 5 | W 6 | W 6 | W 9 | SSW 15 | SW 15 |
| kJ | — | 20 | 32 | 19 | 18 | 17 | 17 | 17 | 17 | 22 | 11 | 14 | 31 | 20 | 20 | 20 | 25 | 21 | 55 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | S 17 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 13 | SSW 13 | W 9 | N 5 | SW 15 | W 10 | W 9 | SSW 15 | ESE 5 | WNW 7 |
| kJ | — | — | — | — | 5 | 10 | 25 | 25 | 25 | 17 | 17 | 24 | 12 | 35 | 29 | 25 | 21 | 2 | 4 |
Wind waves Height (m) Direction Period (s) | WNW 9 | WNW 9 | N 5 | N 5 | N 5 | N 5 | N 5 | N 6 | N 5 | N 5 | NNW 5 | — | — | — | — | E 4 | N 5 | N 5 | N 5 |
| kJ | 721 | 655 | 18 | 18 | 27 | 29 | 55 | 49 | 34 | 18 | 27 | — | — | — | — | 6 | 29 | 24 | 15 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 552 | 218 | 23 | 22 | 22 | 27 | 83 | 23 | 218 | 23 | 23 | 22 | 15 | 0 | 0 | 10 | 22 | 22 | 22 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||
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