Surf Forecasts:
How big are the waves at Porthtowan today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 6ft (1.9m), 13s period with WNW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 3.5ft (1.1m), 12s period with WNW swell.
- Evening surf: Evening surf (18 Sep, local time) - 7ft (2.1m), 8s period with W swell.
The current surf forecast for Porthtowan at 7PM is: 2.0m 7s primary swell from a West direction and 0.9m 12s secondary swell from a West-northwest direction (forecast issued at 12:00pm September 18). An open ocean swell of 0.1m 15s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 6ft (1.9m) | 13s |
| Afternoon (18 Sep) | 3.5ft (1.1m) | 12s |
| Evening (18 Sep) | 7ft (2.1m) | 8s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 17°C on Fri night, min 15°C on Sat night). Winds decreasing (fresh winds from the WSW on Fri afternoon, calm by Sun night). | |||||||||||||||||||||
Fri 18 | Saturday 19 | Sunday 20 | |||||||||||||||||||
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 |  |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | WNW 13 | W 13 | WNW 12 | W 7 | W 8 | W 8 | W 8 | W 8 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1249 | 1191 | 386 | 422 | 531 | 624 | 583 | 507 | 1190 | 1188 | 1210 | 1009 | 915 | 810 | 743 | 676 | 617 | 553 | 483 | 418 | 418 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross | cross-on | on | on | on | on | cross-on | glassy | glassy |
High Tide | 10:05AM4.86m | 10:31PM4.52m | 11:00AM4.42m | 11:41PM4.13m | 12:28PM4.15m | ||||||||||||||||
Low Tide | 4:23PM1.89m | 4:45AM2.16m | 5:28PM2.29m | 6:06AM2.47m | 7:12PM2.45m | ||||||||||||||||
 | | | |  |  |  | | | | | | | | | | |  | | | | |
 | 7:00 | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:03 | — | — | — | — | — |
 | — | — | — | 7:29 | — | — | — | — | — | — | — | 7:27 | — | — | — | — | — | — | — | 7:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 16 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 15 | 15 | 15 | 16 | 17 | 16 | 16 |
Feels °C | 12 | 12 | 10 | 11 | 13 | 13 | 12 | 12 | 13 | 13 | 15 | 16 | 16 | 16 | 14 | 14 | 15 | 15 | 16 | 16 | 16 |
Swell 1 Height (m) Direction Period (s) | SW 12 | N 5 | WNW 12 | WNW 12 | WNW 12 | WNW 12 | WNW 11 | WNW 11 | SW 16 | SW 16 | SW 15 | SW 15 | SW 14 | SW 14 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 |
| kJ | 6 | 4 | 386 | 210 | 152 | 145 | 176 | 265 | 10 | 10 | 9 | 8 | 8 | 8 | 743 | 676 | 617 | 553 | 483 | 418 | 418 |
Swell 2 Height (m) Direction Period (s) | S 18 | SW 12 | S 17 | S 15 | S 16 | SW 16 | SW 16 | SW 16 | S 12 | S 11 | S 11 | S 11 | S 11 | — | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 6 | 6 | 6 | 5 | 5 | 10 | 10 | 10 | 3 | 3 | 2 | 2 | 2 | — | 8 | 8 | 8 | 8 | 8 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | S 18 | S 18 | S 18 | S 12 | S 12 | S 12 | S 12 | S 12 | — | — | — | — | — | S 11 | — | — | — | — | — | — | — |
| kJ | 6 | 6 | 6 | 3 | 3 | 3 | 3 | 3 | — | — | — | — | — | 2 | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | WNW 13 | W 13 | W 7 | W 7 | W 8 | W 8 | W 8 | W 8 | W 11 | W 11 | W 11 | W 11 | W 11 | W 11 | — | — | — | — | — | — | — |
| kJ | 1249 | 1191 | 266 | 422 | 531 | 624 | 583 | 507 | 1190 | 1188 | 1210 | 1009 | 915 | 810 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 282 | 227 | 227 | 227 | 210 | 210 | 208 | 208 | 210 | 227 | 17 | 18 | 17 | 194 | 17 | 22 | 22 | 22 | 23 | 0 | 0 |
Best forecast wave conditions in North Cornwall | |||||||||||||||||||||
Best forecast wave conditions in United Kingdom | |||||||||||||||||||||
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