Climate Insights for Greater Sudbury Airport

The climate in Greater Sudbury Airport is cool. The average annual temperature is 5°C and approximately 911mm of precipitation falls per year. Greater Sudbury Airport receives a notable amount of rainfall throughout the year, including during its driest month. Greater Sudbury Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: July, August, June. The coldest months are February, January, December, when temperatures can drop to -15°C. Snowfall occurs from January to December, with around 170cm accumulating over the season.

Greater Sudbury Airport has a wide annual temperature range, spanning 40°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 25°C with a mean of 20°C. February brings the harshest conditions, with lows dropping to -15°C and an average temperature of -11°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 9°C shift in average temperatures.

Greater Sudbury Airport is a moderately rainy area, receiving approximately 911mm of precipitation annually, which averages out to around 76mm per month. The wettest month is October, averaging 111mm of rainfall. April and August also tend to see above-average precipitation. The driest month is January, with just 49mm. That's 61mm less than October, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Snowfall is a regular feature from January to December, with around 170cm accumulating over the season. January typically sees the most snow at around 34cm.

Greater Sudbury Airport is mildly breezy, with an average annual wind speed of 17km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is March, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 16km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.

It is currently spring in Greater Sudbury Airport, which began on March 20, 2026. Greater Sudbury Airport is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in July at around 25°C, while the coldest stretch bottoms out in February near -15°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Greater Sudbury Airport is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 18°C with modest rainfall averaging 86mm per month. By contrast, February can be quite cold with temperatures dropping to -15°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Greater Sudbury Airport based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.