Montreal — Climate Guide
Monthly temperatures, rainfall, humidity and best time to visit Montreal.
Montreal
📅 Best Time to VisitJune–August & September
🌡️ Hottest MonthJuly (27°C avg high)
🧊 Coolest MonthJanuary (-8°C avg high)
🌧️ Rain SeasonYear-round; heaviest spring/summer
💧 Annual Rainfall1,000mm (plus 200cm snow)
💨 HumidityModerate (60–75%)
🕐 Time ZoneEST UTC-5 (EDT UTC-4 Mar–Nov)
| Month | High | Low | Rain | Humidity |
|---|---|---|---|---|
| Jan | -8°C | -16°C | 60mm | 74% |
| Feb | -7°C | -15°C | 54mm | 73% |
| Mar | -1°C | -9°C | 59mm | 72% |
| Apr | 9°C | 1°C | 74mm | 69% |
| May | 18°C | 8°C | 74mm | 66% |
| Jun | 24°C | 14°C | 82mm | 68% |
| Jul | 27°C | 17°C | 90mm | 70% |
| Aug | 26°C | 16°C | 90mm | 71% |
| Sep | 20°C | 10°C | 82mm | 70% |
| Oct | 13°C | 4°C | 78mm | 72% |
| Nov | 4°C | -2°C | 81mm | 78% |
| Dec | -3°C | -9°C | 70mm | 79% |
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