Climate Insights for Saitama

The climate in Saitama is temperate. The average annual temperature is 16°C and approximately 1358mm of precipitation falls per year. Saitama receives a notable amount of rainfall throughout the year, including during its driest month. Saitama 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 0°C. Light snow can occur between January and March.

Temperatures in Saitama 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 33°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 0°C and an average of 5°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between September and October, with a 7°C shift in average temperatures.

Saitama is a fairly wet location, receiving approximately 1358mm of precipitation annually, which averages out to around 113mm per month. The wettest month is October, averaging 177mm of rainfall. July and June also tend to see above-average precipitation. The driest month is December, with just 41mm. That's 136mm less than October, the wettest month. Precipitation varies noticeably between seasons, with the second half (July to December) of the year generally seeing more rainfall. Light snowfall can occur between January and March, totalling around 18cm annually. February is the snowiest month with approximately 6cm.

Saitama is relatively calm, with an average annual wind speed of 10km/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 11km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 8km/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.

It is currently summer in Saitama, which began on June 21, 2026. Saitama 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 33°C, while the coldest stretch bottoms out in January near 0°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

The table below shows monthly climate averages for Saitama 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.