Monthly Porthleven water temperature chart
The bar chart below shows the average monthly sea temperatures at Porthleven over the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| °C | 10.4 | 10.0 | 9.7 | 10.6 | 12.0 | 14.2 | 16.6 | 17.1 | 16.5 | 14.8 | 13.2 | 11.7 |
| °F | 50.7 | 50 | 49.5 | 51.1 | 53.6 | 57.6 | 61.9 | 62.8 | 61.7 | 58.6 | 55.8 | 53.1 |
Monthly average max / min water temperatures
The graph below shows the range of monthly water temperatures over several years.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min °C | 9.2 | 8.9 | 8.6 | 9 | 10.7 | 11.9 | 13.6 | 15.7 | 15.1 | 13.4 | 12.2 | 10.7 |
| Max °C | 11.6 | 11.1 | 10.8 | 12.3 | 13.3 | 16.5 | 19.7 | 18.6 | 18 | 16.3 | 14.2 | 12.7 |
| Min °F | 49.5 | 48.9 | 48.4 | 49.5 | 52.3 | 55.3 | 58.9 | 61.4 | 60.3 | 57.2 | 54.8 | 52.1 |
| Max °F | 51.9 | 51.1 | 50.6 | 52.8 | 54.9 | 59.9 | 65 | 64.3 | 63.2 | 60.1 | 56.8 | 54.1 |