Weather in Montréal in August
In an average August, Montréal sees a daily high around 25°C and a low around 17°C, based on 1980–2026 of local climate records.
| Average high | 25°C |
|---|---|
| Typical high range | 21°C to 29°C |
| Average low | 17°C |
| Typical low range | 13°C to 20°C |
| Average daily precipitation | 3 mm |
August records
The most extreme August on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total August accumulation.
High
Highest
34°C
2001-08-09
Lowest
14°C
1994-08-31
Low
Highest
26°C
1988-08-04
Lowest
7°C
1986-08-29
Feels-like
Highest
38°C
1988-08-03
Lowest
3°C
1982-08-29
Humidity
Highest
21.5 g/m³
1988-08-04
Lowest
5.7 g/m³
1986-08-28
Wind
Highest
46 km/h
2011-08-28
Lowest
6 km/h
1989-08-13
Gust
Highest
86 km/h
2011-08-28
Lowest
13 km/h
2017-08-27
Precip
Wettest
226 mm
2024
Driest
26 mm
2002
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