Canada · 30-year monthly climate averages
Based on 30 years of climate data, the most comfortable months to visit Montreal are June, July and August, when daytime temperatures are agreeable and rainfall is relatively low.
Montreal sees its warmest weather in July, when daytime highs average around 25°C, and its coolest in January (around -5°C).
Annual precipitation totals roughly 1228mm — August is typically the wettest month (~118mm) and February the driest (~75mm).
A distinctly wetter period runs from June to August — worth planning around if you prefer dry days.
🟧 avg daytime high · 🟦 dashed: avg nighttime low · bars: monthly rainfall
Daily forecast highs vs the 30-year normal — last 60 days
Each bar is one day: orange above normal, blue below.
| Month | High / Low | Rainfall | Travel rating |
|---|---|---|---|
| January | -5° / -14°C | 87mm | 🤔 Fair |
| February | -3° / -12°C | 75mm | 🤔 Fair |
| March | 3° / -7°C | 78mm | 🤔 Fair |
| April | 11° / 1°C | 99mm | ⚠️ Challenging |
| May | 18° / 8°C | 104mm | 👍 Good |
| June | 23° / 14°C | 115mm | 🌟 Great |
| July | 25° / 17°C | 115mm | 👍 Good |
| August | 24° / 16°C | 118mm | 🌟 Great |
| September | 20° / 12°C | 108mm | 👍 Good |
| October | 12° / 5°C | 113mm | 🤔 Fair |
| November | 6° / -1°C | 113mm | ⚠️ Challenging |
| December | -1° / -9°C | 104mm | ⚠️ Challenging |
January in Montreal is freezing, with daytime highs below zero, with average daytime highs around -5°C (23°F) and nighttime lows near -14°C (7°F). Expect roughly 87mm of precipitation, with a moderate amount of rain.
🎒 What to pack — insulated winter coat · thermal layers · gloves and a warm hat
February in Montreal is freezing, with daytime highs below zero, with average daytime highs around -3°C (27°F) and nighttime lows near -12°C (10°F). Expect roughly 75mm of precipitation, with a moderate amount of rain.
🎒 What to pack — insulated winter coat · thermal layers · gloves and a warm hat
March in Montreal is cold, with average daytime highs around 3°C (37°F) and nighttime lows near -7°C (20°F). Expect roughly 78mm of precipitation, with a moderate amount of rain.
🎒 What to pack — warm coat · sweaters and layers · scarf
April in Montreal is chilly, with average daytime highs around 11°C (52°F) and nighttime lows near 1°C (34°F). Expect roughly 99mm of precipitation, with a moderate amount of rain.
🎒 What to pack — jacket or coat · long-sleeve layers
May in Montreal is mild, with average daytime highs around 18°C (64°F) and nighttime lows near 8°C (46°F). Expect roughly 104mm of precipitation, with a moderate amount of rain.
🎒 What to pack — light jacket · layers for cool evenings
June in Montreal is pleasantly warm, with average daytime highs around 23°C (73°F) and nighttime lows near 14°C (57°F). Expect roughly 115mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
July in Montreal is warm, with average daytime highs around 25°C (77°F) and nighttime lows near 17°C (62°F). Expect roughly 115mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light summer clothing · sunscreen and sunglasses · compact umbrella or rain jacket
August in Montreal is pleasantly warm, with average daytime highs around 24°C (75°F) and nighttime lows near 16°C (61°F). Expect roughly 118mm of precipitation, and this is one of the wetter months.
🎒 What to pack — light layers · comfortable walking shoes · compact umbrella or rain jacket
September in Montreal is pleasantly warm, with average daytime highs around 20°C (67°F) and nighttime lows near 12°C (53°F). Expect roughly 108mm of precipitation, with a moderate amount of rain.
🎒 What to pack — light layers · comfortable walking shoes
October in Montreal is chilly, with average daytime highs around 12°C (54°F) and nighttime lows near 5°C (42°F). Expect roughly 113mm of precipitation, and this is one of the wetter months.
🎒 What to pack — jacket or coat · long-sleeve layers · compact umbrella or rain jacket
November in Montreal is cold, with average daytime highs around 6°C (42°F) and nighttime lows near -1°C (31°F). Expect roughly 113mm of precipitation, and this is one of the wetter months.
🎒 What to pack — warm coat · sweaters and layers · scarf · compact umbrella or rain jacket
December in Montreal is freezing, with daytime highs below zero, with average daytime highs around -1°C (29°F) and nighttime lows near -9°C (16°F). Expect roughly 104mm of precipitation, with a moderate amount of rain.
🎒 What to pack — insulated winter coat · thermal layers · gloves and a warm hat