Climate Insights for Saint Petersburg

The climate in Saint Petersburg is cool. The average annual temperature is 6°C and approximately 689mm of precipitation falls per year. Saint Petersburg receives a notable amount of rainfall throughout the year, including during its driest month. Saint Petersburg 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 -8°C. Snowfall occurs from January to December, with around 111cm accumulating over the season.

Temperatures in Saint Petersburg vary considerably across the year, with a 30°C difference between the coldest and warmest months. July is the warmest month, though highs remain moderate at 22°C with a mean of 18°C. The coldest month is January, when overnight lows fall to -8°C and the daily average is -6°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between September and October, with a 6°C shift in average temperatures.

Saint Petersburg is a relatively dry area, receiving approximately 689mm of precipitation annually, which averages out to around 57mm per month. The wettest month is August, averaging 104mm of rainfall. July and June also tend to see above-average precipitation. The driest month is February, with just 35mm. That's 69mm less than August, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Snowfall is a regular feature from January to December, with around 111cm accumulating over the season. December typically sees the most snow at around 24cm.

Saint Petersburg 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 February, averaging 18km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, 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 3km/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, 17km/h in spring, 15km/h in summer, 17km/h in autumn.

It is currently spring in Saint Petersburg, which began on March 20, 2026. Saint Petersburg 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 22°C, while the coldest stretch bottoms out in January near -8°C. Summer is next, beginning on June 21, 2026 — 90 days from now.

The best time to visit Saint Petersburg is during June, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 64mm per month. By contrast, July can be uncomfortably hot with highs reaching 22°C, while January is the coldest period with lows dropping to -8°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Saint Petersburg 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.