Travel Weather Fairy🎊 Featured event
Festival International de Jazz de Montréal
📅 June–July each year
Downtown venues and street-event areas can attract large crowds during the festival.
Check official source →🇨🇦 Canada · Quebec · Montreal
Montreal Weather in August
SummerIn Montreal, August averages about 25°C (78°F) during the day and 17°C (63°F) at night, so afternoons generally feel warm while evenings are mild. Some wet days are normal, with about 12 days reaching at least 1 mm of precipitation and roughly 119 mm for the month.
Avg high77.8°F 25.4°CAvg low62.9°F 17.2°CRainy days~12.2 daysMonthly rain119.2 mm
🧳 Packing guide
What to wear in Montreal in August
A practical August packing list for Montreal starts here: light daytime clothing is usually comfortable, but add a thin cardigan or light jacket for evenings. A compact umbrella is worth carrying for passing showers or wetter days.
Travel takeaway: For many travelers, these temperatures are comfortable for city sightseeing when you pack one flexible layer.
🗓️ Travel timing at a glance
Montreal: 12-month travel weather
Montreal has a long, cold, snowy winter and a warm summer. The seasonal contrast is large, so packing and outdoor comfort vary sharply by month.
JanSevere cold · SnowFebMidwinter · SnowMarLate winter · SnowAprSpringMaySpringJunEarly summerJulSummerAugSummerSepEarly autumnOctAutumnNovEarly winterDecWinter · Snow
Monthly labels summarize typical climate patterns for trip planning. Always check the latest forecast and tropical-storm alerts before departure.
🎉 Trip planning check
Montreal 2026 events & busy periods
Check major events, holidays and periods that may affect crowds, transport or opening hours.
⚠️ Busy / closure period
Winter festivals and deep-cold period
📅 January–February
Winter events are a draw, but extreme cold or heavy snow can make outdoor time and transport more difficult.
Check official source →Event dates, holiday schedules and opening hours can change. Recheck the linked official tourism or government source before departure.
Montreal in August · recent 3 years
Compare the most recent complete year with the two years before it. Daily high / low temperatures are shown in °F.
CalendarNo measurable rain🌧️ Rain⛈️ Thunderstorm❄️ SnowHigh / Low · °F
⭐ August 2025 · latest complete year☔ 6 days · 45.8 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
23.5°C/14.3°C
No rain
2
26.8°C/15.6°C
No rain
3
29.1°C/18.6°C
No rain
4
25.9°C/18.7°C
No rain
5
25.7°C/15.6°C
No rain
6
29.1°C/16.3°C
No rain
7
30.4°C/17.3°C
No rain
8
30.9°C/20.4°C
No rain
9
31.4°C/20.7°C
No rain
10
33.4°C/23.9°C
No rain
11
34.1°C/23.8°C
No rain
12
34.5°C/23.9°C
No rain
13
28.7°C/23.9°C
🌧️ 3.2 mm
14
27.8°C/20.5°C
No rain
15
27.7°C/16.7°C
No rain
16
30.4°C/18.5°C
No rain
17
24.8°C/15.9°C
🌧️ 2.3 mm
18
20.4°C/11.7°C
No rain
19
22.6°C/14°C
No rain
20
24.7°C/15.1°C
No rain
21
26.2°C/15.9°C
No rain
22
28.4°C/16.9°C
No rain
23
29.8°C/19.6°C
No rain
24
24.1°C/18.3°C
🌧️ 4.9 mm
25
24.8°C/18.4°C
No rain
26
20.4°C/15.8°C
No rain
27
21.9°C/13.2°C
No rain
28
23.4°C/14.8°C
🌧️ 4.5 mm
29
18.5°C/14°C
🌧️ 22.1 mm
30
17.5°C/12.5°C
🌧️ 5.3 mm
31
22.5°C/12.6°C
No rain
August 2024☔ 17 days · 218.5 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
29.4°C/21.1°C
🌧️ 2.7 mm
2
30.9°C/22.4°C
No rain
3
30°C/22°C
🌧️ 2.9 mm
4
29.5°C/21.4°C
🌧️ 9.7 mm
5
22.1°C/16.2°C
🌧️ 2.6 mm
6
23.1°C/14.8°C
No rain
7
24.7°C/15°C
No rain
8
26°C/14.4°C
No rain
9
21.1°C/18.4°C
🌧️ 122.1 mm
10
24.5°C/18.8°C
No rain
11
22.6°C/16.2°C
🌧️ 1.2 mm
12
22.6°C/14.9°C
🌧️ 1.6 mm
13
27.3°C/15.3°C
No rain
14
28.6°C/16.7°C
No rain
15
28.1°C/18.4°C
🌧️ 1.1 mm
16
28.5°C/19.9°C
No rain
17
26.4°C/20.6°C
🌧️ 3.6 mm
18
25.6°C/20.6°C
🌧️ 2.2 mm
19
21°C/14.4°C
🌧️ 19.2 mm
20
17.5°C/14.3°C
🌧️ 3.8 mm
21
15.3°C/13.2°C
🌧️ 12.7 mm
22
19.9°C/13.6°C
🌧️ 5.4 mm
23
24°C/13.7°C
No rain
24
25°C/15.9°C
No rain
25
25.5°C/17.1°C
🌧️ 2.1 mm
26
26.2°C/17°C
No rain
27
28.1°C/19.2°C
No rain
28
22°C/14.4°C
🌧️ 4.3 mm
29
21.2°C/11.2°C
No rain
30
24.6°C/12.1°C
No rain
31
21.8°C/17.2°C
🌧️ 19.7 mm
August 2023☔ 17 days · 187.8 mm
Sun
Mon
Tue
Wed
Thu
Fri
Sat
1
21°C/11.9°C
No rain
2
22.8°C/11.2°C
No rain
3
24.5°C/16.5°C
🌧️ 33.9 mm
4
23.7°C/17°C
🌧️ 9.2 mm
5
24.6°C/14.7°C
No rain
6
25.8°C/15.6°C
No rain
7
22.8°C/16.5°C
🌧️ 10.1 mm
8
25.5°C/18.8°C
🌧️ 29.5 mm
9
26.9°C/16°C
No rain
10
25.7°C/17.7°C
🌧️ 16 mm
11
23°C/16°C
🌧️ 1.5 mm
12
24.4°C/14°C
🌧️ 18.8 mm
13
24.8°C/17°C
🌧️ 5.8 mm
14
23.5°C/16.1°C
No rain
15
24.9°C/15.2°C
No rain
16
24.9°C/17.3°C
🌧️ 2.2 mm
17
26.8°C/18.8°C
🌧️ 1.6 mm
18
23.3°C/17.7°C
🌧️ 19.5 mm
19
19°C/16.2°C
🌧️ 5.5 mm
20
25.4°C/16.7°C
No rain
21
23.1°C/17.2°C
No rain
22
23.5°C/13.3°C
No rain
23
24.5°C/15.2°C
No rain
24
24.7°C/13.9°C
🌧️ 4.3 mm
25
20.7°C/16°C
🌧️ 2.6 mm
26
22.5°C/15.7°C
🌧️ 7.9 mm
27
22.3°C/14.2°C
No rain
28
23.7°C/14.3°C
No rain
29
24.3°C/15°C
🌧️ 1.5 mm
30
22.3°C/16.7°C
🌧️ 14.5 mm
31
21.7°C/11.4°C
No rain
Historical calendars use Open-Meteo reanalysis data. A rainy day is counted when daily precipitation is at least 1 mm. Conditions at a specific hotel, beach or station can differ.
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Current Montreal weather and 7-day forecast
When departure is close, the latest forecast matters more than long-term averages.
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Forecast data: MET Norway · CC BY 4.0 · cached by Travel Weather Fairy
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Montreal weather in other months
Switch months to compare the seasonal pattern.