Montreal weather in May
Montreal in May averages 13°C (56°F), 78 mm of rain and 7.7 hours of sun a day.
Of the twelve months in Montreal, May is the fifth warmest, the fourth driest and the fourth sunniest.
- Average temp
- 13°C (56°F)
7–20°C · 45–67°F
- Rainfall
- 78 mm
Showers likely
- Sunshine
- 7.7 h
hours per day
What is Montreal like in May?
Daytime
Days are mild.
Rain
Some rain is likely; pack for showers.
Evening
Evenings are cooler. A layer helps after sunset.
What should I pack for Montreal in May?
A light rain jacket
About 78 mm falls this month — showers rather than washouts.
A warm mid-layer
Nights drop to around 7°C (45°F).
May compared with April and June
May in Montreal is 7.9°C warmer than April and about as wet as it, which averages 6°C (42°F).
May in Montreal is 4.8°C cooler than June and 11 mm drier than it, which averages 18°C (65°F).
Daylight in Montreal in May
On 15 May the sun is up for 14 hours 56 minutes in Montreal, rising about 05:23 and setting about 20:18 local time.
May ends 1 hour 6 minutes longer than it begins, so the last week of the month is a different length of day from the first.
That is 44 minutes short of June, the longest-lit month here.
Where to stay in Montreal
Dates are a starting point for May.
Travel guides for Montreal
What to read before you book.
Montreal weather by month
TemperatureRainfall
How May compares with the rest of the year
May is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | -10°C / 14°F | 74 mm |
| February | -8°C / 18°F | 56 mm |
| March | -2°C / 28°F | 72 mm |
| April | 6°C / 42°F | 84 mm |
| May | 13°C / 56°F | 78 mm |
| June | 18°C / 65°F | 88 mm |
| July | 21°C / 70°F | 105 mm |
| August | 20°C / 68°F | 86 mm |
| September | 15°C / 60°F | 91 mm |
| October | 8°C / 47°F | 94 mm |
| November | 2°C / 35°F | 85 mm |
| December | -5°C / 23°F | 78 mm |
Check another month
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FAQs about Montreal in May
May climate averages for Montreal, 1991–2020.
Montreal averages 13°C (56°F) in May, ranging from about 7°C (45°F) at night to 20°C (67°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 78 mm falls across May, enough to need a light jacket but not enough to reshape a trip.
No. May averages 13°C (56°F) against 18°C (65°F) in June — 4.8°C cooler.
May is 7.9°C warmer than April, and about as wet.
Yes. May falls inside the most comfortable stretch of the year here, May to October, on temperature and rainfall together.
About 7.7 hours of sun a day on the 1991–2020 average.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what May is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 14 hours 56 minutes of daylight in mid-May, against 15 hours 40 minutes in June and 8 hours 44 minutes in December.
On 15 May, sunrise is about 05:23 and sunset about 20:18 local time. Both shift across the month — the month ends 1 hour 6 minutes longer than it starts.
