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Mounts Bay (Penzance) surfForecast / Cornwall (South) / UK
48hr Weather and Surf, issued 6 am Thursday 18 Sep 2025 BST
How big are the waves at Mounts Bay (Penzance) today?
The current surf forecast for Mounts Bay (Penzance) at 7AM is: 3.0m 12s primary swell from a West-southwest direction and 0.1m 19s secondary swell from a South direction (forecast issued at 06:00am September 18). The wind direction is predicted to be cross-onshore.
| Time (BST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 10ft (3.0m) | 12s |
| Afternoon (18 Sep) | 8ft (2.5m) | 11s |
| Evening (18 Sep) | 7.5ft (2.3m) | 10s |
Table - waves today at Mounts Bay (Penzance). (Swell directed towards the surf break)
Thursday 18 | Friday 19 | Saturday 20 | Sun 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 | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 6 | 8 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 2767 | 2355 | 1919 | 1756 | 1464 | 1282 | 970 | 932 | 885 | 923 | 846 | 748 | 600 | 528 | 442 | 375 | 352 | 344 | 283 | 154 | 137 | 289 | 1118 | 3023 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on | cross- on | cross- on | on | on | cross- on | on | on | on | cross | cross | cross |
High Tide / height (m) | 3:03AM 4.54 | 3:28PM 4.88 | 3:57AM 4.85 | 4:16PM 5.18 | 4:38AM 5.10 | 4:54PM 5.40 | ||||||||||||||||||
Low Tide / height (m) | 9:36AM 1.83 | 10:12PM 1.47 | 10:31AM 1.48 | 11:01PM 1.17 | 11:16AM 1.21 | 11:41PM 0.98 | ||||||||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | Sun 21 | |||||||||||||||||||||
| Sunrise | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:03 | - | - | - | - | - |
| Sunset | - | - | - | - | - | 7:30 | - | - | - | - | - | - | - | 7:28 | - | - | - | - | - | - | - | 7:24 | - | - |
 |  |  |  | | |  | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 18 | 18 | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 16 | 14 | 13 | 14 |
| Feels °C (?) | 14 | 14 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 14 | 15 | 15 | 15 | 16 | 15 | 15 | 13 | 11 | 6 | 4 | 3 | 5 |
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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 (South)
Wind reports 19 km away suggest it is still onshore at Mounts Bay (Penzance) (moderate winds from the SSW at Culdrose Airport). A 2.1m groundswell from the WSW
19 km away, 1 h 26 min ago
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