Oshawa Climate: Weather by Month and Best Time to Visit

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

Best time to visit

Year at a glance

Jan 3.7 Feb 4.0 Mar 4.5 Apr 5.9 May 7.1 Jun 7.6 Jul 7.6 Aug 7.8 Sep 7.7 Oct 6.2 Nov 5.1 Dec 3.8

Weather by month

Month	Avg high	Avg low	Rainfall	Rainy days	Humidity	Sunshine	Score
January	-2°C	-10°C	65 mm	10	–	–	3.7
February	-1°C	-9°C	52 mm	8	–	–	4.0
March	5°C	-4°C	60 mm	10	–	–	4.5
April	12°C	2°C	82 mm	11	–	–	5.9
May	19°C	9°C	77 mm	11	–	–	7.1
June	24°C	14°C	89 mm	11	–	–	7.6
July	26°C	17°C	83 mm	11	–	–	7.6
August	25°C	16°C	80 mm	10	–	–	7.8
September	21°C	12°C	80 mm	9	–	–	7.7
October	14°C	6°C	82 mm	12	–	–	6.2
November	7°C	0°C	72 mm	10	–	–	5.1
December	1°C	-6°C	67 mm	11	–	–	3.8