- Discover top Air Canada offers on flights to Canada
- Browse lowest fares available or search by date
- Book flights to Toronto, Vancouver, Calgary, Montreal & more
Sudbury weather by month
Check out Sudbury weather averages by month. Compare detailed monthly climate statistics including temperature, rainfall and sunshine figures.
Temperature in Sudbury (°F)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Max temperature (daytime) | 19 |
21 |
34 |
48 |
63 |
72 |
77 |
73 |
64 |
54 |
37 |
23 |
| Min temperature (night-time) | -0 |
1 |
14 |
28 |
41 |
50 |
55 |
54 |
46 |
37 |
25 |
9 |
| Heat & Humidity | 0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Note: 0 = None, L = Low, M = Moderate, H = High, VH = Very high, E = Extreme
Sunshine & UV index in Sudbury
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daily hours of sunshine | ||||||||||||
| Daily hours of daylight | 9 |
10 |
12 |
14 |
15 |
16 |
15 |
14 |
13 |
11 |
9 |
9 |
| UV Index (Maximum) | 1 |
2 |
3 |
5 |
6 |
7 |
7 |
7 |
5 |
3 |
1 |
1 |
Rainfall in Sudbury
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Number of days with some rain | 13 |
10 |
9 |
9 |
10 |
11 |
9 |
11 |
12 |
11 |
12 |
13 |
| Average monthly rainfall (inches) | 2.5 |
1.9 |
2.0 |
2.2 |
2.5 |
2.8 |
2.6 |
3.2 |
3.8 |
2.7 |
2.8 |
2.6 |
More about Sudbury
Sudbury by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Ontario
The climate guide for Ontario (Sudbury) shows long term monthly 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.
What's the climate like in Sudbury?
Sudbury has a cold climate with warm summers and some rainfall in all months.
Sudbury weather in January
Expect daytime maximum temperatures of 19°F in Sudbury, Ontario in January based on long-term weather averages. There are 3 hours of sunshine per day on average with 13 days with some rainfall and typically 2.5 inches of rainfall in the month, which might fall as snow.
- 19°F max day temperature
19 - 3 hours of sunshine per day
- 13 days with some rainfall
13 - -0°F min night temperature
-0 - 9 hours of daylight per day
9 - No heat & humidity
0 - 2.5 inches of monthly rainfall
2.5 - 1 (Low) UV index
1
Sudbury weather in February
Expect daytime maximum temperatures of 21°F in Sudbury, Ontario in February based on long-term weather averages. There are 4 hours of sunshine per day on average with 10 days with some rainfall and typically 1.9 inches of rainfall in the month, which might fall as snow.
- 21°F max day temperature
21 - 4 hours of sunshine per day
- 10 days with some rainfall
10 - 1°F min night temperature
1 - 10 hours of daylight per day
10 - No heat & humidity
0 - 1.9 inches of monthly rainfall
1.9 - 2 (Low) UV index
2
Sudbury weather in March
Expect daytime maximum temperatures of 34°F in Sudbury, Ontario in March based on long-term weather averages. There are 5 hours of sunshine per day on average with typically 2.0 inches of rainfall in the month, which might fall as snow.
- 34°F max day temperature
34 - 5 hours of sunshine per day
- 9 days with some rainfall
9 - 14°F min night temperature
14 - 12 hours of daylight per day
12 - No heat & humidity
0 - 2.0 inches of monthly rainfall
2.0 - 3 (Moderate) UV index
3
Sudbury weather in April
Expect daytime maximum temperatures of 48°F in Sudbury, Ontario in April based on long-term weather averages. There are 6 hours of sunshine per day on average with typically 2.2 inches of rainfall in the month.
- 48°F max day temperature
48 - 6 hours of sunshine per day
- 9 days with some rainfall
9 - 28°F min night temperature
28 - 14 hours of daylight per day
14 - No heat & humidity
0 - 2.2 inches of monthly rainfall
2.2 - 5 (Moderate) UV index
5
Sudbury weather in May
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°F max day temperature
63 - 7 hours of sunshine per day
- 10 days with some rainfall
10 - 41°F min night temperature
41 - 15 hours of daylight per day
15 - No heat & humidity
0 - 2.5 inches of monthly rainfall
2.5 - 6 (High) UV index
6
Sudbury weather in June
Expect daytime maximum temperatures of 72°F in Sudbury, Ontario in June based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 2.8 inches of rainfall in the month.
- 72°F max day temperature
72 - 8 hours of sunshine per day
- 11 days with some rainfall
11 - 50°F min night temperature
50 - 16 hours of daylight per day
16 - No heat & humidity
0 - 2.8 inches of monthly rainfall
2.8 - 7 (High) UV index
7
Sudbury weather in July
Expect daytime maximum temperatures of 77°F in Sudbury, Ontario in July based on long-term weather averages. There are 9 hours of sunshine per day on average with typically 2.6 inches of rainfall in the month.
- 77°F max day temperature
77 - 9 hours of sunshine per day
- 9 days with some rainfall
9 - 55°F min night temperature
55 - 15 hours of daylight per day
15 - No heat & humidity
0 - 2.6 inches of monthly rainfall
2.6 - 7 (High) UV index
7
Sudbury weather in August
Expect daytime maximum temperatures of 73°F in Sudbury, Ontario in August based on long-term weather averages. There are 8 hours of sunshine per day on average with 11 days with some rainfall and typically 3.2 inches of rainfall in the month.
- 73°F max day temperature
73 - 8 hours of sunshine per day
- 11 days with some rainfall
11 - 54°F min night temperature
54 - 14 hours of daylight per day
14 - No heat & humidity
0 - 3.2 inches of monthly rainfall
3.2 - 7 (High) UV index
7
Sudbury weather in September
Expect daytime maximum temperatures of 64°F in Sudbury, Ontario in September based on long-term weather averages. There are 5 hours of sunshine per day on average with 12 days with some rainfall and typically 3.8 inches of rainfall in the month.
- 64°F max day temperature
64 - 5 hours of sunshine per day
- 12 days with some rainfall
12 - 46°F min night temperature
46 - 13 hours of daylight per day
13 - No heat & humidity
0 - 3.8 inches of monthly rainfall
3.8 - 5 (Moderate) UV index
5
Sudbury weather in October
Expect daytime maximum temperatures of 54°F in Sudbury, Ontario in October based on long-term weather averages. There are 4 hours of sunshine per day on average with 11 days with some rainfall and typically 2.7 inches of rainfall in the month.
- 54°F max day temperature
54 - 4 hours of sunshine per day
- 11 days with some rainfall
11 - 37°F min night temperature
37 - 11 hours of daylight per day
11 - No heat & humidity
0 - 2.7 inches of monthly rainfall
2.7 - 3 (Moderate) UV index
3
Sudbury weather in November
Expect daytime maximum temperatures of 37°F in Sudbury, Ontario in November based on long-term weather averages. There are 2 hours of sunshine per day on average with 12 days with some rainfall and typically 2.8 inches of rainfall in the month, which might fall as snow.
- 37°F max day temperature
37 - 2 hours of sunshine per day
- 12 days with some rainfall
12 - 25°F min night temperature
25 - 9 hours of daylight per day
9 - No heat & humidity
0 - 2.8 inches of monthly rainfall
2.8 - 1 (Low) UV index
1
Sudbury weather in December
Expect daytime maximum temperatures of 23°F in Sudbury, Ontario in December based on long-term weather averages. There are 2 hours of sunshine per day on average with 13 days with some rainfall and typically 2.6 inches of rainfall in the month, which might fall as snow.
- 23°F max day temperature
23 - 2 hours of sunshine per day
- 13 days with some rainfall
13 - 9°F min night temperature
9 - 9 hours of daylight per day
9 - No heat & humidity
0 - 2.6 inches of monthly rainfall
2.6 - 1 (Low) UV index
1
More about Sudbury
Sudbury by month
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Recommended for Ontario
- Save on skiing holidays to Canada in winter 2025/2026
- Book early with Crystal Ski for the best deals
- Filter by promotional offers, duration, board basis & more
The climate guide for Ontario (Sudbury) shows long term monthly 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.
Compare Sudbury weather with the UK
The weather chart below compares the average monthly maximum daytime temperature for Sudbury, Ontario, Canada and the UK (London).
Maximum daytime temperature (°F)
Metric (°C) | Imperial (°F)
More about Ontario
Be inspired
Get your weekly fix of holiday inspiration from some of the world's best travel writers plus save on your next trip with the latest exclusive offers
We promise not to share your details
Related posts
Popular travel offers
Explore holiday destinations
- Beach holidays
- City breaks
- Family holidays
- Half term holidays
- Spring holidays
- Summer holidays
- Autumn holidays
- Winter sun holidays
- Honeymoons
- Coolcations
- Compare places
- Ski resorts
Save with latest deals & discounts
- Holiday offers
- Top travel brands
- Airlines & flights
- Discount hotels
- TUI
- Jet2holidays
- Neilson
- Marella Cruises
- Holiday Extras
- Pierre & Vacances
- Caledonian Travel
- Club Med
Airport parking
- Manchester Airport
- Stansted Airport
- Bristol Airport
- Luton Airport
- Birmingham Airport
- Edinburgh Airport
- Gatwick Airport
- Glasgow Airport
- Newcastle Airport
Airport lounges
- Manchester Airport
- Birmingham Airport
- Bristol Airport
- Edinburgh Airport
- Glasgow Airport
- Heathrow Airport
- Newcastle Airport
- Stansted Airport
- Gatwick Airport














