Montreal, Canada

Set in an ocean-tempered climate, Montreal (Canada) is best understood through its weather data: our 2015–2024 climate record puts its peak at a 93/100 sun score in July, exactly the kind of reliability you want for a long-weekend city trip.

Across a typical year, afternoon temperatures swing between -4°C (January) and 27°C (July). On the rain ledger, September is the safest bet at a 26% chance of a wet day, while April climbs to 43%. Beach-warm afternoons (24°C and up) hold through June–August.

The seasonal arc is clear in the data: summer averages 25°C against winter's -2°C, while rain-day odds move from 40% in winter and 38% in spring to 40% in summer and 35% through autumn. Summer wins on the numbers and winter loses them; everything in between is a trade-off between warmth and crowds. If your dates are flexible, August buys you 25°C warmth at the quiet end of the season.

Best months to visit Montreal

Ranked purely on sunshine odds, the podium is July at 93/100, then August at 89 and June at 88. Anything in May–September clears our 70-point reliability bar. At the other end, December scores just 44, the weakest month of the year.

For context: in July, Montreal is drier than 33% of the ocean destinations we track.

Month-by-month breakdown for Montreal → · More destinations for July →

Right now the 16-day outlook shows 2 mostly-clear days (under 40% cloud) and none with real rain risk, with temperatures between -1°C and 17°C — which is how Montreal earns its current 59/100 sun score.