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Porthtowan Surf Forecast
/ Cornwall (North) (59 surf breaks) /
Surf Forecasts:
Porthtowan surfForecast / Cornwall (North) / UK
48hr Weather and Surf, issued 6 am Thursday 21 Aug 2025 BST
How big are the waves at Porthtowan today?
The current surf forecast for Porthtowan at 8AM is: 0.6m 5s primary swell from a North direction and 0.2m 6s secondary swell from a West-southwest direction (forecast issued at 06:00am August 21). The wind direction is predicted to be glassy.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Aug) | 2ft (0.6m) | 5s |
| Afternoon (21 Aug) | 1ft (0.3m) | 15s |
| Evening (21 Aug) | 2ft (0.6m) | 14s |
Table - waves today at Porthtowan. (Swell directed towards the surf break)
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
| 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 5 | 5 | 16 | 15 | 14 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 21 | 22 | 23 | 35 | 47 | 114 | 207 | 250 | 253 | 305 | 277 | 254 | 295 | 240 | 221 | 176 | 172 | 161 | 127 | 120 | 129 | 127 | 124 | 105 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross | cross | cross- on | on | cross- on | cross- off | off |
High Tide / height (m) | 4:28AM 5.29 | 4:51PM 5.69 | 5:17AM 5.65 | 5:36PM 6.06 | 5:58AM 5.95 | 6:16PM 6.33 | ||||||||||||||||||
Low Tide / height (m) | 10:55AM 1.14 | 11:24PM 0.83 | 11:41AM 0.78 | 12:06AM 0.52 | 12:20PM 0.51 | 12:43AM 0.33 | ||||||||||||||||||
Thursday 21 | Friday 22 | Saturday 23 | Sun 24 | |||||||||||||||||||||
| Sunrise | - | 6:16 | - | - | - | - | - | - | - | 6:18 | - | - | - | - | - | - | - | 6:20 | - | - | - | - | - | - |
| Sunset | - | - | - | - | - | 8:29 | - | - | - | - | - | - | - | 8:27 | - | - | - | - | - | - | - | 8:24 | - | - |
 |  | | | |  |  | | | | | | | | | |  | | | | |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 15 | 16 | 17 | 17 | 16 | 15 | 15 | 15 | 15 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 17 | 20 | 20 | 18 | 17 | 17 |
| Feels °C (?) | 14 | 14 | 14 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 15 | 14 | 16 | 16 | 16 | 16 | 16 | 19 | 19 | 17 | 17 | 16 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Cornwall (North)
Offshore wind has become cross-off at Sennen Cove (light winds from the ENE at Land's End Airport 3 km from Sennen Cove). 0.4m 5s windswell from the N with a 0.2m 6s windswell from the SSW. 2 swells combining to make bigger set waves.
22 km away, 2 h 28 min ago
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