Canada · Regional climate

Ontariowhen to go

Regional slice of Canada with its own temperature profile. Best months here: Jun · Jul · Aug.

Range: -10–24 °C
Compare: +2.7°C vs. Canada mean
Country: Canada
TZ: America/Montreal

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12-month climate · Ontario

How the year moves in Ontario

Ten years of ERA5, aggregated over Ontario itself rather than over Canada as a whole — the same series the month-by-month scores below are built from.

Temperature°C

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Month	Average daytime high (°C)
January	-9.9
February	-8.6
March	-1.5
April	5.3
May	14.9
June	20.6
July	23.6
August	22.2
September	17.7
October	9.5
November	0.3
December	-7.4

Rainfallmm

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Month	Rainfall (mm)
January	43
February	41
March	48
April	66
May	66
June	87
July	90
August	89
September	88
October	83
November	62
December	56

Sunshinehr / day

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Month	Sunshine hours (hr / day)
January	3.5
February	5.6
March	7.1
April	7.5
May	7.5
June	7.4
July	7.4
August	6.3
September	5.1
October	3.5
November	2.6
December	2.5

Month by month · Ontario

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Other regions · Canada

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Safety · 5 governments

What the governments say about Canada

Combined advisory · most-cautious-wins

Exercise normal precautions

Highest level across 5 governments · Advisory last changed 2026-08-16

See breakdown by country