Climate Overview
The climate in Nishio is temperate. The average annual temperature is 17°C and approximately 1847mm of precipitation falls per year. Nishio receives a notable amount of rainfall throughout the year, including during its driest month. Nishio 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.
Temperature
Temperatures in Nishio vary considerably across the year, with a 31°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 2°C and an average of 5°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.
Precipitation
Nishio is a fairly wet location, receiving approximately 1847mm of precipitation annually, which averages out to around 154mm per month. The wettest month is July, averaging 312mm of rainfall. October and September also tend to see above-average precipitation. The driest month is January, with just 57mm. That's 255mm less than July, 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.
Wind
Nishio is relatively calm, with an average annual wind speed of 3km/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 4km/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. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.
Seasons
3 days until Summer
It is currently spring in Nishio, which began on March 20, 2026. Nishio 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 2°C. Summer is next, beginning on June 21, 2026 — 3 days from now.
Spring
Temperatures range from 6 to 25°C. Rainfall is heavy, totalling around 425mm across the season with a monthly average of 142mm. Winds are generally light, averaging 3km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 33°C. Rainfall is heavy, totalling around 699mm across the season with a monthly average of 233mm. Winds are generally light, averaging 3km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 9 to 28°C. Rainfall is heavy, totalling around 530mm across the season with a monthly average of 177mm. Winds are generally light, averaging 3km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 2 to 12°C. Precipitation is moderate at around 192mm for the season, averaging 64mm per month. Winds are generally light, averaging 4km/h. A light jacket or sweater is usually sufficient, though cooler evenings may call for an extra layer.
Monthly Climate Data
The table below shows monthly climate averages for Nishio 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. 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.
