Climate Insights for Chertsey

The climate in Chertsey is cool. The average annual temperature is 4°C and approximately 1228mm of precipitation falls per year. Chertsey receives a notable amount of rainfall throughout the year, including during its driest month. Chertsey 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 January, February, December, when temperatures can drop to -15°C. Chertsey experiences heavy snowfall, typically from January through December.

Chertsey has a wide annual temperature range, spanning 39°C from the coldest to warmest months. July is the warmest month, though highs remain moderate at 24°C with a mean of 19°C. January 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.

Chertsey is a fairly wet location, receiving approximately 1228mm of precipitation annually, which averages out to around 102mm per month. The wettest month is August, averaging 143mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 81mm. That's 62mm less than August, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Chertsey receives heavy snowfall, accumulating around 235cm annually from January through December. The snowiest month is January, with approximately 51cm. Winter travel should account for significant snow cover.

Chertsey 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 14km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 4km/h 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 17km/h in winter, 18km/h in spring, 15km/h in summer, 16km/h in autumn.

It is currently spring in Chertsey, which began on March 20, 2026. Chertsey 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 24°C, while the coldest stretch bottoms out in January near -15°C. Summer is next, beginning on June 21, 2026 — 89 days from now.

The table below shows monthly climate averages for Chertsey 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.