Sudbury weather in May 2026

Q: How hot is it in Sudbury in May?

Daytime temperatures usually reach 18°C in Sudbury in May, falling to 8°C at night.

Q: How sunny is it in Sudbury in May?

There are normally 7 hours of bright sunshine each day in Sudbury in May - that's 50% of daylight hours.

Q: Is the sea cold around Sudbury in May?

The average sea temperature around Sudbury in May is 7°C.

Q: Does it rain in Sudbury in May?

There are usually 11 days with some rain in Sudbury in May and the average monthly rainfall is 69mm.

Expect daytime maximum temperatures of 63°F in Sudbury, Ontario in May based on long-term weather averages. There are 7 hours of sunshine per day on average with 10 days with some rainfall and typically 2.5 inches of rainfall in the month.

63
63°F max day temperature
7
7 hours of sunshine per day
10
10 days with some rainfall
41
41°F min night temperature
15
15 hours of daylight per day
0
No heat & humidity
2.5
2.5 inches of monthly rainfall
6
6 (High) UV index

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The May weather guide for Ontario (Sudbury) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Metric (°C) | Imperial (°F)

More about Ontario

How hot is it in Sudbury in May?

Daytime temperatures usually reach 64°F in Sudbury in May, falling to 46°F at night.

How sunny is it in Sudbury in May?

There are normally 7 hours of bright sunshine each day in Sudbury in May - that's 50% of daylight hours.

How warm is the sea around Sudbury in May?

The average sea temperature around Sudbury in May is 45°F.

Does it rain in Sudbury in May?

There are usually 11 days with some rain in Sudbury in May and the average monthly rainfall is 2.7 inches.

Sudbury May sunrise & sunset times

Browse the sunrise and sunset times for Sudbury in May 2026. Select a month to view Sudbury sunrise and sunset times for the next 12 months.

Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec

Date	Sunrise times	Sunset times
Friday, 1st May 2026	05:10	19:33
Saturday, 16th May 2026	04:49	19:53
Sunday, 31st May 2026	04:35	20:08

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Ontario - quick facts
Flight time^✝	8 hours
Time difference	UK -5 to -6 hours
Language(s)	English, French
Currency	Canadian Dollar
Electricity	A + B plug (120V)
Driving side	Right
Visa^✝	Yes
Why visit?	Nature
Tourist info	Destination Ontario