Historical surf replay
Mount's Bay conditions using shared west Cornwall weather forecasts and observations, Porthleven inshore readings, and offshore signals from Sevenstones and Brittany in the Bay of Biscay. Each source keeps its own location and role so the view provides coastal context without presenting nearby buoy readings as measurements at the surf break.
There were small, messy waves at Porthleven: the well-aligned WSW inshore signal averaged 2.2ft at a short 5.7-second period, while 10mph westerly winds were cross-onshore. Larger Brittany seas were WNW and largely sheltered, so they did not translate into substantial surf here; observations confirmed this picture.
Generated from the completed forecast and observations shown on this page.
Day at a glance
Observed in west Cornwall
Wind mostly westerly
W 268°cross-onshore
24 observations. Godrevy is close enough to provide useful regional wind context for both coasts, although local effects can differ. Explore all weather readings.
Atlantic and Western Approaches signal
24 readings. rising height trend; medium confidence from metoffice. Open the Sevenstones archive.
Bay of Biscay southerly-swell signal
24 readings. rising height trend; high confidence from metoffice. Open the Brittany archive.
South-coast inshore response
41 readings. rising height trend; high confidence from cco. Open the Porthleven archive.
These sources describe different locations and exposures. Offshore and inshore buoy readings provide context for Mount's Bay; they are not measurements taken at the surf break itself. Directional labels use Porthleven as a representative south-west-facing swell window; individual peaks and beaches can differ.
The charts share the same time axis so offshore signals, inshore readings and regional wind can be compared without treating them as the same measurement location.
Two line charts show wave height and wind speed through the selected day for Mount's Bay. The detailed table following the charts contains the same values in text form.
| Metric | ||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Godrevy forecast weather (3-hourly) | ||||||||||||||||||||||||
| Observed weather | ||||||||||||||||||||||||
| Observed wind (mph) | 5SW | 6WSW | 6SW | 4SW | 3SSW | 6WSW | 4WSW | 5W | 5W | 9NW | 11NW | 11NW | 13NW | 13NW | 13WNW | 12WNW | 18W | 17W | 15W | 16W | 13W | 10WSW | 9WSW | 11W |
| Sevenstones Significant wave height (ft) | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.0 | 3.3 | 3.3 | 3.3 | 3.6 | 3.9 | 3.6 | 3.6 | 3.9 | 3.6 | 3.9 | 4.3 | 4.6 | 4.9 | 5.6 | 5.6 | 5.9 | 6.2 | 5.2 |
| Sevenstones Observed wave period (s) | 6.0 | 6.1 | 6.3 | 6.3 | 6.3 | 6.6 | 7.3 | 7.1 | 6.8 | 7.0 | 6.9 | 6.9 | 6.5 | 6.0 | 6.8 | 6.8 | 6.9 | 7.0 | 6.9 | 7.3 | 6.9 | 7.2 | 7.0 | 7.0 |
| Sevenstones Observed wave direction | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable | Unavailable |
| Brittany Significant wave height (ft) | 2.6 | 2.6 | 3.9 | 4.6 | 5.2 | 5.6 | 5.2 | 5.9 | 5.6 | 5.6 | 5.9 | 6.2 | 6.2 | 6.6 | 5.9 | 6.2 | 6.9 | 7.9 | 6.2 | 7.9 | 8.9 | 9.8 | 7.9 | 7.2 |
| Brittany Observed wave period (s) | 6.9 | 3.6 | 4.1 | 6.2 | 4.8 | 5.0 | 6.0 | 6.2 | 6.0 | 6.4 | 5.3 | 4.9 | 6.4 | 6.6 | 9.1 | 11.1 | 10.2 | 8.3 | 7.8 | 10.2 | 9.8 | 6.7 | 8.0 | 6.4 |
| Brittany Observed wave direction | NW 326° | W 275° | W 269° | NW 323° | W 268° | W 266° | WNW 292° | WNW 283° | WNW 301° | NW 304° | W 273° | NW 313° | NW 323° | NW 317° | NNW 327° | NW 316° | NW 307° | NW 312° | NW 309° | NW 317° | NW 321° | WNW 292° | NW 316° | NW 314° |
| Porthleven Significant wave height (ft) | 2.1 | 1.9 | – | – | – | 1.5 | 1.5 | 1.5 | 1.5 | 1.5 | 1.8 | 1.8 | 1.8 | 1.8 | 1.8 | 2.0 | 2.4 | 2.8 | 2.9 | 2.8 | 3.2 | 3.6 | 3.6 | 3.5 |
| Porthleven Observed wave period (s) | 5.0 | 4.2 | – | – | – | 5.9 | 5.3 | 6.7 | 4.8 | 4.6 | 5.6 | 5.9 | 4.6 | 8.3 | 10.0 | 5.0 | 3.1 | 3.6 | 4.3 | 5.3 | 5.3 | 5.6 | 7.1 | 5.9 |
| Porthleven Observed wave direction | WSW 241° | WSW 236° | Unavailable | Unavailable | Unavailable | WSW 248° | WSW 249° | WSW 246° | WSW 249° | SW 231° | WSW 245° | WSW 241° | WSW 243° | WSW 256° | WSW 249° | SW 225° | WSW 257° | WSW 255° | WSW 246° | WSW 243° | WSW 241° | WSW 242° | WSW 248° | WSW 242° |
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