Ontario

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When to go

Best months: April, May, October, November, December

Month Avg high Avg low Rainfall
January 19° 107 mm
February 20° 84 mm
March 21° 10° 91 mm
April 25° 12° 26 mm
May 26° 13° 16 mm
June 31° 16° 2 mm
July 35° 19° 4 mm
August 35° 20° 7 mm
September 33° 19° 15 mm
October 29° 16° 16 mm
November 24° 11° 32 mm
December 19° 74 mm

Averages for 2015-2024 from the ERA5 reanalysis. Highlighted months have an average high between 18 and 30 degrees and under 80 mm of rain.