Cornwall Climate: Weather by Month and Best Time to Visit

Best months for Cornwall: August, September, June, July.

Best time to visit

Year at a glance

Jan 3.5 Feb 3.7 Mar 4.2 Apr 5.7 May 6.9 Jun 7.3 Jul 7.3 Aug 7.5 Sep 7.5 Oct 6.0 Nov 4.8 Dec 3.4

Weather by month

Month	Avg high	Avg low	Rainfall	Rainy days	Humidity	Sunshine	Score
January	-3°C	-12°C	73 mm	12	–	–	3.5
February	-2°C	-11°C	62 mm	10	–	–	3.7
March	4°C	-6°C	76 mm	11	–	–	4.2
April	12°C	2°C	101 mm	12	–	–	5.7
May	20°C	9°C	98 mm	13	–	–	6.9
June	24°C	13°C	105 mm	12	–	–	7.3
July	26°C	16°C	100 mm	13	–	–	7.3
August	25°C	16°C	94 mm	12	–	–	7.5
September	21°C	11°C	92 mm	11	–	–	7.5
October	14°C	5°C	104 mm	12	–	–	6.0
November	7°C	-1°C	84 mm	12	–	–	4.8
December	0°C	-7°C	83 mm	12	–	–	3.4