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 to moderate waves at Porthleven, but they were messy rather than clean: the south-west swell was well aligned, though periods were mostly short at about 6.5 seconds and south-westerly winds averaged 11 mph onshore. Observations confirmed a rising inshore sea state, not clean groundswell.
Generated from the completed forecast and observations shown on this page.
Day at a glance
Observed in west Cornwall
Wind mostly south-westerly
SW 226°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. steady height trend; medium confidence from metoffice. Open the Sevenstones archive.
Bay of Biscay southerly-swell signal
24 readings. steady height trend; high confidence from metoffice. Open the Brittany archive.
South-coast inshore response
48 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 | 5S | 6SSW | 7SSW | 6SSW | 6SSW | 7SSW | 9WSW | 8SW | 9WSW | 16WSW | 15WSW | 20WSW | 18WSW | 16SW | 21WSW | 16WSW | 15WSW | 13WSW | 12SW | 10WSW | 8SSW | 9SSW | 6SSW |
| Sevenstones Significant wave height (ft) | 2.6 | 3.3 | 3.3 | 3.6 | 3.6 | 3.0 | 3.3 | 2.6 | 2.6 | 3.0 | 2.6 | 3.3 | 3.6 | 3.6 | 3.9 | 4.3 | 3.6 | 3.9 | 3.6 | 3.3 | 3.0 | 3.0 | 3.3 | 3.0 |
| Sevenstones Observed wave period (s) | 6.8 | 6.5 | 7.1 | 7.1 | 6.9 | 6.8 | 7.1 | 7.1 | 6.6 | 7.2 | 6.2 | 6.1 | 6.1 | 6.0 | 6.1 | 5.9 | 6.0 | 5.8 | 6.2 | 6.0 | 6.0 | 5.9 | 6.0 | 6.2 |
| 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) | 4.9 | 6.9 | 6.2 | 4.6 | 5.6 | 4.6 | 4.3 | 5.9 | 5.9 | 3.6 | 4.3 | 5.2 | 4.9 | 5.6 | 5.9 | 5.6 | 6.9 | 4.9 | 5.6 | 5.6 | 4.9 | 5.6 | 5.6 | 5.6 |
| Brittany Observed wave period (s) | 7.1 | 10.2 | 8.3 | 6.7 | 10.2 | 10.2 | 7.3 | 9.8 | 8.8 | 10.7 | 8.3 | 10.2 | 6.7 | 9.8 | 9.1 | 8.3 | 8.5 | 8.0 | 7.1 | 7.8 | 7.8 | 6.7 | 5.1 | 5.2 |
| Brittany Observed wave direction | W 269° | WNW 303° | W 268° | W 259° | WNW 300° | WNW 303° | SW 229° | WNW 296° | WNW 290° | NW 321° | WNW 297° | WNW 294° | W 261° | WNW 284° | WNW 294° | NW 305° | WNW 297° | WNW 288° | WSW 245° | W 272° | NW 325° | SW 216° | WSW 244° | SW 226° |
| Porthleven Significant wave height (ft) | 2.6 | 2.3 | 2.4 | 2.9 | 3.0 | 3.5 | 3.4 | 3.4 | 3.3 | 3.1 | 3.2 | 3.1 | 3.2 | 3.6 | 3.8 | 4.4 | 5.0 | 5.5 | 5.4 | 5.2 | 4.5 | 4.1 | 3.8 | 3.3 |
| Porthleven Observed wave period (s) | 6.7 | 7.1 | 7.1 | 7.7 | 7.1 | 7.1 | 6.7 | 6.3 | 6.7 | 6.7 | 6.3 | 7.1 | 7.1 | 7.1 | 6.7 | 5.0 | 5.3 | 5.6 | 5.6 | 6.3 | 5.6 | 6.3 | 6.7 | 6.7 |
| Porthleven Observed wave direction | SSW 204° | SW 215° | SW 219° | SW 224° | SW 224° | SW 235° | SW 233° | SW 233° | SW 226° | SW 221° | SSW 211° | SSW 211° | SSW 212° | SW 215° | SW 222° | SW 231° | WSW 239° | WSW 238° | WSW 239° | WSW 239° | WSW 236° | SW 233° | SW 233° | SW 225° |
Swipe sideways to see more hours.