Climate Insights for Shiraoi

The climate in Shiraoi is cool. The average annual temperature is 8°C and approximately 1710mm of precipitation falls per year. Shiraoi receives a notable amount of rainfall throughout the year, including during its driest month. Shiraoi is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, September, July. The coldest months are January, February, December, when temperatures can drop to -4°C. Snowfall occurs from January to December, with around 199cm accumulating over the season.

Temperatures in Shiraoi 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 23°C with a mean of 22°C. The coldest month is January, when overnight lows fall to -4°C and the daily average is -3°C. Daily temperature variation is modest, with an average difference of 4°C between highs and lows. The sharpest temperature change occurs between September and October, with a 8°C shift in average temperatures.

Shiraoi is a fairly wet location, receiving approximately 1710mm of precipitation annually, which averages out to around 142mm per month. The wettest month is August, averaging 392mm of rainfall. June and July also tend to see above-average precipitation. The driest month is January, with just 41mm. That's 351mm less than August, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 199cm accumulating over the season. December typically sees the most snow at around 65cm.

Shiraoi is relatively calm, with an average annual wind speed of 5km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is January, averaging 6km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 3km/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 6km/h in winter, 4km/h in spring, 3km/h in summer, 5km/h in autumn.

It is currently summer in Shiraoi, which began on June 21, 2026. Shiraoi 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 23°C, while the coldest stretch bottoms out in January near -4°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The table below shows monthly climate averages for Shiraoi 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.