Monthly Averages
Here are monthly temperature and rainfall averages. Data is from Culdrose (near Helston), taken from the years 1981 - 2010.
Original source: Culdrose 1981 - 2010 averages
| Month | Temperature (°C) | Air Frosts | Rain (mm) | Sunshine (Hrs) | ||
| Max | Min | Mean | (Days) | Total | Total | |
| Jan | 9.2 | 4.1 | 6.6 | 4.4 | 113.4 | 56.6 |
| Feb | 9.0 | 3.7 | 6.3 | 4.2 | 80.4 | 79.7 |
| Mar | 10.2 | 4.8 | 7.5 | 1.8 | 80.2 | 109.7 |
| Apr | 11.9 | 5.6 | 8.7 | 0.7 | 67.2 | 177.8 |
| May | 14.6 | 8.3 | 11.4 | 0 | 60.0 | 177.8 |
| Jun | 17.1 | 10.7 | 13.9 | 0 | 60.5 | 202.7 |
| Jul | 19.0 | 12.8 | 15.9 | 0 | 61.8 | 197.2 |
| Aug | 19.2 | 12.9 | 16.0 | 0 | 67.0 | 192.0 |
| Sep | 17.4 | 11.2 | 14.3 | 0 | 71.9 | 150.4 |
| Oct | 14.4 | 9.2 | 11.8 | 0.1 | 105.0 | 105.7 |
| Nov | 11.7 | 6.6 | 9.1 | 0.7 | 115.7 | 76.3 |
| Dec | 9.9 | 4.8 | 7.3 | 2.9 | 115.9 | 54.2 |
| Annual | 13.7 | 7.9 | 10.7 | 14.8 | 998.8 | 1607.9 |
