Climate Insights for Hudson Bay

The climate in Hudson Bay is cold. The average annual temperature is 2°C and approximately 536mm of precipitation falls per year. July is the wettest month, receiving around 95mm of rainfall. Hudson Bay 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 -20°C. Snowfall occurs from January to December, with around 110cm accumulating over the season.

Hudson Bay has a wide annual temperature range, spanning 45°C from the coldest to warmest months. The warmest month is July, when average highs reach 25°C and the mean temperature sits around 18°C. February brings the harshest conditions, with lows dropping to -20°C and an average temperature of -15°C. On average, daily temperatures fluctuate by about 11°C between overnight lows and afternoon highs. The sharpest temperature change occurs between April and May, with a 9°C shift in average temperatures.

Hudson Bay is a relatively dry area, receiving approximately 536mm of precipitation annually, which averages out to around 45mm per month. The wettest month is July, averaging 95mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 14mm. That's 81mm less than July, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 110cm accumulating over the season. November typically sees the most snow at around 24cm.

Hudson Bay is mildly breezy, with an average annual wind speed of 16km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is April, averaging 17km/h, though still comfortable for most outdoor activities. The calmest conditions occur in December, with average winds dropping to 15km/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 Hudson Bay, which began on March 20, 2026. Hudson Bay 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 -20°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The best time to visit Hudson Bay is during June, July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 17°C with modest rainfall averaging 83mm per month. By contrast, February can be quite cold with temperatures dropping to -20°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 Hudson Bay 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.