Climate Insights for Williams Harbour Airport

The climate in Williams Harbour Airport is cold. The average annual temperature is 1°C and approximately 1225mm of precipitation falls per year. Williams Harbour Airport receives a notable amount of rainfall throughout the year, including during its driest month. Williams Harbour Airport is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, September. The coldest months are February, January, March, when temperatures can drop to -14°C. Williams Harbour Airport experiences heavy snowfall, typically from January through December.

Temperatures in Williams Harbour Airport vary considerably across the year, with a 27°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 13°C with a mean of 11°C. The coldest month is February, when overnight lows fall to -14°C and the daily average is -11°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between June and July, with a 5°C shift in average temperatures.

Williams Harbour Airport is a fairly wet location, receiving approximately 1225mm of precipitation annually, which averages out to around 102mm per month. The wettest month is November, averaging 140mm of rainfall. June and August also tend to see above-average precipitation. The driest month is February, with just 67mm. That's 73mm less than November, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Williams Harbour Airport receives heavy snowfall, accumulating around 520cm annually from January through December. The snowiest month is March, with approximately 99cm. Winter travel should account for significant snow cover.

Williams Harbour Airport is relatively calm, with an average annual wind speed of 7km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 9km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 6km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 3km/h gap between the calmest and windiest months. Wind tends to be stronger during winter months, driven by seasonal pressure systems. The seasonal averages break down to 8km/h in winter, 7km/h in spring, 6km/h in summer, 7km/h in autumn.

It is currently summer in Williams Harbour Airport, which began on June 21, 2026. Williams Harbour 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 August at around 13°C, while the coldest stretch bottoms out in February near -14°C. Autumn is next, beginning on September 23, 2026 — 84 days from now.

The table below shows monthly climate averages for Williams Harbour 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.