Canada
Montreal in August: weather & travel advice
This month's data profile
Rain shapes the decision
Montreal in August is climatically well suited to family holidays and city breaks. The average daily high is around 26 °C. With about 14 rainy days it is wet.
Historical monthly averages, not a weather forecast. Individual days and years can differ substantially.
Rank among 12 monthly averages
71/100 · #2
Warmth
#2
Dryness
#9
Sun
#4
Published best categories: Overall, City break, Family
Montreal · AugustPhoto: Ken Lund from Reno, Nevada, USA · CC BY-SA 2.0Climate facts
- Average high
- 26 °C
- Average low
- 16 °C
- Rainy days (est.)
- 14 rainy days (est.)
- Sun (est.)
- 6 h/day
- Humidity
- 73 %
Climate evidence with direct month comparison
The highlighted row is the selected month. Precipitation total and rainy days are separate monthly averages.
| Month | Avg high °C | Avg low °C | Rainy days (est.) | Precipitation mm | Sun h/day (est.) | Humidity % | Wind m/s | Score |
|---|---|---|---|---|---|---|---|---|
| July | 26 | 17 | 16 | 95 | 7.1 | 75 | 2.6 | 65 |
| August (selected) | 26 | 16 | 14 | 93 | 6.3 | 73 | 2.5 | 71 |
| September | 22 | 11 | 12 | 83 | 4.9 | 74 | 2.6 | 77 |
How do the previous and next months compare?
Baseline: August (71/100)
Positive and negative values show the change from the selected month.
| Score Δ | Average high Δ | Average low Δ | Rainy days Δ | Rain Δ | Sun Δ | Humidity Δ | Wind Δ | |
|---|---|---|---|---|---|---|---|---|
| July | -6 | +0.1 °C | +0.8 °C | +2.3 | +2.2 mm | +0.8 h | +2.7 % | +0.1 m/s |
| September | +6 | -4.1 °C | -4.6 °C | -2.5 | -9.2 mm | -1.4 h | +1.3 % | +0.1 m/s |
All twelve months in context
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Useful next decisions
Frequently asked questions
How warm is Montreal in August?
The average daily high is around 26 °C, with an average daily low of about 16 °C.
Does it rain a lot in Montreal in August?
The curated estimate is about 14 rainy days per month, not a directly measured long-term average. Total precipitation averages around 93 mm for the month. A rainy day does not mean all-day rain.
When is the best time to visit Montreal?
By the climate score, June, July, August and September are the strongest months for Montreal. August is one of them.