Climate of Cornwall, United Kingdom
Area-weighted average across Cornwall. For where people actually live and travel, see the cities below.
Cornwall, a subdivision of United Kingdom, has a seasonal climate on average. Area-weighted monthly temperatures across the whole territory range from 5.9°C / 42.6°F in February to 15.7°C / 60.3°F in August, with rainfall from 59 mm / 2.3 in to 126 mm / 5 in depending on the season (1061 mm / 41.8 in total across the year).
| Month | Temperature | Rainfall | Matches |
|---|---|---|---|
| January | 6.1°C43°F | 122 mm4.8″ | — |
| February | 5.9°C42.6°F | 92 mm3.6″ | — |
| March | 7.1°C44.8°F | 83 mm3.3″ | — |
| April | 8.2°C46.8°F | 64 mm2.5″ | — |
| May | 11°C51.8°F | 61 mm2.4″ | — |
| June | 13.6°C56.5°F | 64 mm2.5″ | — |
| July | 15.6°C60.1°F | 59 mm2.3″ | — |
| August | 15.7°C60.3°F | 74 mm2.9″ | — |
| September | 13.9°C57°F | 85 mm3.3″ | — |
| October | 11.4°C52.5°F | 109 mm4.3″ | — |
| November | 8.7°C47.7°F | 122 mm4.8″ | — |
| December | 7.1°C44.8°F | 126 mm5″ | — |
Frequently asked questions
What is the best time to visit Cornwall?
Cornwall, United Kingdom does not have a clear sunny-and-dry window by our cutoffs. The warmest month is August at 15.7°C / 60.3°F, and the driest is July at 59 mm / 2.3 in — likely your best travel window. For city-level detail, see the cities section below.
What is the climate of Cornwall?
Cornwall, United Kingdom has area-weighted monthly average temperatures ranging from 5.9°C / 42.6°F in February to 15.7°C / 60.3°F in August. Annual rainfall averages about 1061 mm / 41.8 in, with the wettest month being December (126 mm / 5 in) and the driest July (59 mm / 2.3 in). Because this is an area average across the whole subdivision, local city values can differ substantially.
What is the hottest month in Cornwall?
The hottest month in Cornwall is August, with an area-wide average temperature of 15.7°C / 60.3°F.
What is the coldest month in Cornwall?
The coldest month in Cornwall is February, with an area-wide average temperature of 5.9°C / 42.6°F.
When does it rain most in Cornwall?
The wettest month in Cornwall is December, averaging about 126 mm / 5 in of rainfall. The driest is July with about 59 mm / 2.3 in.