Climate Overview
The climate in Mishimamura Satsuma Iojima is warm and mild. The average annual temperature is 21°C and approximately 2471mm of precipitation falls per year. Mishimamura Satsuma Iojima receives a notable amount of rainfall throughout the year, including during its driest month. Mishimamura Satsuma Iojima 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 12°C.
Temperature
Mishimamura Satsuma Iojima sees moderate temperature variation throughout the year, ranging from 12°C to 29°C. The warmest month is August, when average highs reach 29°C and the mean temperature sits around 29°C. January is the coolest month, with minimum temperatures around 12°C and an average of 14°C. Daily temperature variation is modest, with an average difference of 2°C between highs and lows. The sharpest temperature change occurs between November and December, with a 5°C shift in average temperatures.
Precipitation
Mishimamura Satsuma Iojima is a very wet location, receiving approximately 2471mm of precipitation annually, which averages out to around 206mm per month. The wettest month is June, averaging 467mm of rainfall. July and May also tend to see above-average precipitation. The driest month is January, with just 122mm. That's 345mm less than June, the wettest month. Precipitation varies noticeably between seasons, with the first half (January to June) of the year generally seeing more rainfall.
Wind
Mishimamura Satsuma Iojima is very windy, with an average annual wind speed of 35km/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 40km/h, which can feel quite blustery and may affect outdoor activities. The calmest conditions occur in August, with average winds dropping to 30km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 10km/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 39km/h in winter, 35km/h in spring, 30km/h in summer, 34km/h in autumn.
Seasons
88 days until Summer
It is currently spring in Mishimamura Satsuma Iojima, which began on March 20, 2026. Mishimamura Satsuma Iojima 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 29°C, while the coldest stretch bottoms out in January near 12°C. Summer is next, beginning on June 21, 2026 — 88 days from now.
Spring
Temperatures range from 15 to 23°C. Rainfall is heavy, totalling around 641mm across the season with a monthly average of 214mm. Winds are strong, averaging 35km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 24 to 29°C. Rainfall is heavy, totalling around 906mm across the season with a monthly average of 302mm. Winds are strong, averaging 30km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 19 to 28°C. Rainfall is heavy, totalling around 533mm across the season with a monthly average of 178mm. Winds are strong, averaging 34km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 12 to 17°C. Rainfall is heavy, totalling around 391mm across the season with a monthly average of 130mm. Winds are strong, averaging 39km/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 Mishimamura Satsuma Iojima 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.
