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Montreal, Canada · Temperate oceanic

Montreal: best months to visit

July (8.6/10) · December (0.9/10).

📅 Data updated: October 2026 🛰️ ERA5 · 10 years 📍 45.50°N · 73.57°W
⚡ Quick answer
July
Depends on your goals
8.6/10
☀️ Jul
Top score (8.6/10)
🌤️ Aug
Alt. (8.2/10)
Dec
Plus rude (0.9/10)
🌊 Seaside☀️ Bright🍴 Gastronomy
Photo par Marc-Olivier Jodoin via Unsplash
Decide

When to visit Montreal?

The decision rests on several criteria. Climate score, tourist crowds and feasible activities.

Verdict: In Montreal, July and August clearly stand out. December concentrates the least favorable conditions.
Top & avoid
🏆 July · 8.6 August · 8.2 June · 8.0 September · 7.9 ⚠️ December · 0.9
1.0
Jan
1.1
Feb
1.1
Mar
4.1
Apr
7.4
May
8.0
Jun
8.6
Jul
8.2
Aug
7.9
Sep
4.3
Oct
0.9
Nov
0.9
Dec
Best period · ≥ 7 Decent period · 4 – 7 Tough conditions · < 4

What you grasp in 5 seconds

Montreal offers 5 comfortable months, with 5 months to avoid (January, February, March, November, December). The gap is sharp: 8.6 in July vs 0.9 in December.

What to check next

Your tolerance for crowds and budget. The best months concentrate tourist saturation and higher prices. Shoulder seasons offer a good compromise.

Next action

Scroll down to the detailed table to compare month by month, then open the page of the month that interests you.

How we calculate the score

The score combines 4 weighted criteria using 10 years of real climate data (ERA5).

Source : ERA5 · Open-Meteo · 10 years (2016–2025) · Full methodology →

Understand

Compare all 12 months

Month-by-month details: temperature, rain, sunshine, score and verdict.

✅ 5 comfortable months (May · Jun · Jul · Aug · Sep)
MonthT° minT° maxRain %mm/daySunScoreVerdict
🌧️ January →10°F27°F28%2.5mm3.3h1.0/10Tough conditions
🌧️ February →10°F28°F30%2.9mm4.5h1.1/10Tough conditions
🌧️ March →23°F39°F29%2.7mm5.3h1.1/10Tough conditions
🌥️ April →34°F50°F33%3.9mm5.9h4.1/10Decent period
⛅ May →46°F66°F27%2.6mm7.4h7.4/10Best period
☀️ June →57°F75°F33%3.7mm8.0h8.0/10Best period
☀️ July →64°F81°F30%3.4mm8.8h8.6/10Best period
☀️ August →63°F77°F32%3.8mm7.9h8.2/10Best period
☀️ September →55°F72°F22%2.3mm6.1h7.9/10Best period
🌥️ October →45°F57°F31%4.1mm4.6h4.3/10Decent period
🌧️ November →30°F41°F31%2.8mm2.8h0.9/10Tough conditions
🌧️ December →18°F32°F30%2.8mm2.7h0.9/10Tough conditions
📊 Quick read
Optimal window
May → Sep
Good transition
Apr · Oct
Tough period
Jan · Feb · Mar · Nov · Dec
🌡️ Detailed conditions (July)
🌡️ Feel
Warm
☀️ UV
6.5 · Moderate-Strong
💧 Humidity feel
61°F · Pleasant
☔ Rain
30% · 3.4 mm/day
🌅 Sunshine
8.8h/day
Week by week

Montreal week by week: your odds of avoiding rain

For each week of the year: in how many years out of 10 it was mostly dry (at most 2 rainy days), 2016 to 2025.

Safest week: May 7 to May 13, mostly dry in 10 years out of 10 (1.0 rainy day(s) on average).

Most exposed: Mar 26 to Apr 1, mostly dry in 2 years out of 10 (2.9 rainy days on average).

Number = years out of 10 with at most 2 rainy days in the week. Source: ERA5 reanalysis (ECMWF) via Open-Meteo, daily data 2016-2025. Rainy day = at least 1 mm, as everywhere on the site.
JanJan 16/1026°FJan 84/1026°FJan 157/1022°FJan 225/1026°FJan 299/1023°F
FebFeb 55/1026°FFeb 127/1026°FFeb 195/1031°FFeb 267/1031°F
MarMar 58/1035°FMar 129/1038°FMar 198/1040°FMar 262/1045°F
AprApr 25/1046°FApr 96/1053°FApr 166/1052°FApr 236/1056°FApr 305/1059°F
MayMay 710/1062°FMay 146/1067°FMay 215/1071°FMay 287/1072°F
JunJun 48/1072°FJun 117/1074°FJun 185/1079°FJun 253/1078°F
JulJul 210/1080°FJul 97/1080°FJul 166/1080°FJul 235/1080°FJul 307/1079°F
AugAug 65/1080°FAug 135/1078°FAug 206/1077°FAug 276/1073°F
SepSep 36/1073°FSep 109/1072°FSep 178/1071°FSep 248/1067°F
OctOct 16/1065°FOct 88/1060°FOct 157/1058°FOct 225/1054°FOct 294/1050°F
NovNov 55/1049°FNov 128/1039°FNov 196/1038°FNov 265/1037°F
DecDec 38/1032°FDec 108/1030°FDec 177/1029°FDec 244/1028°F

A specific date? The app computes the same figure day by day.

10-year trend

Annual temperatures — Montreal

Min/max temperature curves observed over the past 10 years (ERA5). Shows climate stability and trend.

T° maxT° meanT° min32°36°39°43°46°50°54°57°201620172018201920202021202220232024202556°F — decade peak (2024)+2.13°F / decade
Tailor

For your trip

A few angles depending on what kind of trip you are planning.

🏖️ Beaches: Jun-Sept🌊 Swell: Sept-Mar🚤 Water activities
Book

Plan your trip

Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.

🎟️ Activities & tours · Montreal

GetYourGuide selection · free cancellation

See all →
Affiliate link · GetYourGuide
Practical info

What you need to know before you go

Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.

Country · Canada

🗣️LanguageEnglish
💶CurrencyCanadian Dollar ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘModerate · 3/5

🌡️ Climate

🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthJuly · 81°F
❄️Coolest monthJanuary · 27°F
🌧️Rainiest month ⓘApril · 33%

🏖️ Beach trip

📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore

Related destinations & guides

If this destination doesn't fit your dates, here are alternatives and guides.

Location

Where is Montreal ?

Global position + regional geographic context.

🌍 World
🔍 Geographic context
Temperate oceanic climate with a 8.6 → 0.9 gap between best and worst month. 10 years of ERA5 data to choose by project.
45.50°N · 73.57°W
Questions

Frequently asked questions

What is the best time to visit Montreal?
July is the best month with 81°F highs, 64°F lows, 8.8h of sunshine and 30.0% rainy days. The months of July & August offer comparable conditions.
How many hours of sunshine does Montreal get in July?
Montreal averages 8.8 sunshine hours per day in July. It is the sunniest month with a climate score of 8.0/10.
What is the rainiest month in Montreal?
November is the most unfavourable month with November has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Montreal in July?
In July, overnight lows reach 64°F, while afternoon highs average 81°F.
Is Montreal good in winter?
In winter (December-February), Montreal scores 1.0/10 on average — Difficult period — prefer the peak season.. The best month overall remains July with a score of 8.0/10.
When should you avoid Montreal?
November is the most difficult month to visit Montreal, with November has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.