Sarnia

How to get there

When to go

Best months: May, July, September

Month Avg high Avg low Rainfall
January -6° 68 mm
February -6° 64 mm
March -2° 74 mm
April 12° 88 mm
May 19° 74 mm
June 24° 15° 98 mm
July 26° 18° 80 mm
August 26° 18° 95 mm
September 23° 15° 69 mm
October 16° 98 mm
November 66 mm
December -2° 66 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.