Best Time to Visit Montreal: Weather Month by Month

Q: What is the best time to visit Montreal?

July is the best month with 27.0°C highs, 18.0°C lows, 8.8h of sunshine and 30.0% rainy days. The months of July & August offer comparable conditions.

Q: 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.

Q: 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.

Q: What are the temperatures at night in Montreal in July?

In July, overnight lows reach 18.0°C, while afternoon highs average 27.0°C.

Q: 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.

Q: 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.

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 favourable 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.

Compare the 12 months By your project

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)

Month	T° min	T° max	Rain %	mm/day	Sun	Score	Verdict
🌧️ January →	-12°C	-3°C	28%	2.5mm	3.3h	1.0/10	Tough conditions
🌧️ February →	-12°C	-2°C	30%	2.9mm	4.5h	1.1/10	Tough conditions
🌧️ March →	-5°C	4°C	29%	2.7mm	5.3h	1.1/10	Tough conditions
🌥️ April →	1°C	10°C	33%	3.9mm	5.9h	4.1/10	Decent period
⛅ May →	8°C	19°C	27%	2.6mm	7.4h	7.4/10	Best period
☀️ June →	14°C	24°C	33%	3.7mm	8.0h	8.0/10	Best period
☀️ July →	18°C	27°C	30%	3.4mm	8.8h	8.6/10	Best period
☀️ August →	17°C	25°C	32%	3.8mm	7.9h	8.2/10	Best period
☀️ September →	13°C	22°C	22%	2.3mm	6.1h	7.9/10	Best period
🌥️ October →	7°C	14°C	31%	4.1mm	4.6h	4.3/10	Decent period
🌧️ November →	-1°C	5°C	31%	2.8mm	2.8h	0.9/10	Tough conditions
🌧️ December →	-8°C	0°C	30%	2.8mm	2.7h	0.9/10	Tough conditions

Rain %28%

Rain %30%

T°-5°C / 4°C

Rain %29%

T°1°C / 10°C

Rain %33%

Sun5.9h

Decent period

⛅ May

7.4/10

T°8°C / 19°C

Rain %27%

Best period

Rain %33%

Best period

Rain %30%

Best period

Rain %32%

Best period

Rain %22%

Best period

T°7°C / 14°C

Rain %31%

Sun4.6h

Decent period

🌧️ November

0.9/10

T°-1°C / 5°C

Rain %31%

T°-8°C / 0°C

Rain %30%

Sun2.7h

Tough 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

16°C · 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.
Jan	Jan 16/10-3°C	Jan 84/10-3°C	Jan 157/10-6°C	Jan 225/10-3°C	Jan 299/10-5°C
Feb	Feb 55/10-3°C	Feb 127/10-4°C	Feb 195/10-1°C	Feb 267/10-1°C
Mar	Mar 58/102°C	Mar 129/103°C	Mar 198/105°C	Mar 262/107°C
Apr	Apr 25/108°C	Apr 96/1012°C	Apr 166/1011°C	Apr 236/1014°C	Apr 305/1015°C
May	May 710/1016°C	May 146/1020°C	May 215/1022°C	May 287/1022°C
Jun	Jun 48/1022°C	Jun 117/1023°C	Jun 185/1026°C	Jun 253/1026°C
Jul	Jul 210/1027°C	Jul 97/1027°C	Jul 166/1027°C	Jul 235/1027°C	Jul 307/1026°C
Aug	Aug 65/1026°C	Aug 135/1026°C	Aug 206/1025°C	Aug 276/1023°C
Sep	Sep 36/1023°C	Sep 109/1022°C	Sep 178/1022°C	Sep 248/1019°C
Oct	Oct 16/1018°C	Oct 88/1015°C	Oct 157/1014°C	Oct 225/1012°C	Oct 294/1010°C
Nov	Nov 55/109°C	Nov 128/104°C	Nov 196/103°C	Nov 265/103°C
Dec	Dec 38/100°C	Dec 108/10-1°C	Dec 177/10-2°C	Dec 244/10-2°C

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.

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.

🏨

Stay

Hotels & rentals · Montreal

Expedia →

🎟️

Activities

Tours, tickets, experiences

See ↓

✈️

Flights

Multi-airline comparator

Kiwi →

🎟️ 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 holiday.

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 · 27°C

❄️Coolest monthJanuary · -3°C

🌧️Rainiest month ⓘApril · 33%

🏖️ Beach holiday

📅Peak seasonJuin → Sept

🏖️Swell (Sept–Mar) ⓘModérée

Explore

Related destinations & guides

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

Similar climate destinations

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Sapporo · Japan→

Nearby destinations

Killington · United States219 km →

Quebec City · Canada233 km →

Boston · USA403 km →

Cape Cod · United States504 km →

Guides & rankings

World ranking 2026See →

Best summer destinationsSee →

Winter sunSee →

Where to go in JulySee →

🗺️ Climate map of 754 destinations

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 27.0°C highs, 18.0°C 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 18.0°C, while afternoon highs average 27.0°C.

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.