Climate Insights for Sanjō

The climate in Sanjō is temperate. The average annual temperature is 13°C and approximately 2032mm of precipitation falls per year. Sanjō receives a notable amount of rainfall throughout the year, including during its driest month. Sanjō 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 January, February, December, when temperatures can drop to -2°C. Sanjō experiences heavy snowfall, typically from January through December.

Temperatures in Sanjō vary considerably across the year, with a 33°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 31°C and the mean temperature sits around 27°C. The coldest month is January, when overnight lows fall to -2°C and the daily average is 1°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 7°C shift in average temperatures.

Sanjō is a very wet location, receiving approximately 2032mm of precipitation annually, which averages out to around 169mm per month. The wettest month is July, averaging 256mm of rainfall. December and January also tend to see above-average precipitation. The driest month is May, with just 121mm. That's 135mm less than July, the wettest month. Rainfall is relatively evenly distributed throughout the year, so there is no pronounced dry or wet season to plan around. Sanjō receives heavy snowfall, accumulating around 244cm annually from January through December. The snowiest month is January, with approximately 91cm. Winter travel should account for significant snow cover.

Sanjō is mildly breezy, with an average annual wind speed of 12km/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 14km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 10km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 4km/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 14km/h in winter, 14km/h in spring, 10km/h in summer, 12km/h in autumn.

It is currently spring in Sanjō, which began on March 20, 2026. Sanjō 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 31°C, while the coldest stretch bottoms out in January near -2°C. Summer is next, beginning on June 21, 2026 — 88 days from now.

The table below shows monthly climate averages for Sanjō 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.