Climate Overview
The climate in Miyakonojō is temperate. The average annual temperature is 17°C and approximately 2431mm of precipitation falls per year. Miyakonojō receives a notable amount of rainfall throughout the year, including during its driest month. Miyakonojō 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, December, February, when temperatures can drop to 2°C.
Temperature
Temperatures in Miyakonojō vary considerably across the year, with a 29°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. January is the coolest month, with minimum temperatures around 2°C and an average of 6°C. Daily temperature variation is modest, with an average difference of 8°C between highs and lows. The sharpest temperature change occurs between November and December, with a 6°C shift in average temperatures.
Precipitation
Miyakonojō is a very wet location, receiving approximately 2431mm of precipitation annually, which averages out to around 203mm per month. The wettest month is June, averaging 476mm of rainfall. July and September also tend to see above-average precipitation. The driest month is December, with just 76mm. That's 400mm less than June, 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
Miyakonojō 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 13km/h, though still comfortable for most outdoor activities. The calmest conditions occur in November, with average winds dropping to 11km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 2km/h between the calmest and windiest months.
Seasons
88 days until Summer
It is currently spring in Miyakonojō, which began on March 20, 2026. Miyakonojō 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.
Spring
Temperatures range from 7 to 24°C. Rainfall is heavy, totalling around 616mm across the season with a monthly average of 205mm. Winds are generally light, averaging 13km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 31°C. Rainfall is heavy, totalling around 1038mm across the season with a monthly average of 346mm. Winds are generally light, averaging 12km/h. Light, breathable clothing is ideal — perfect conditions for outdoor activities.
Autumn
Temperatures range from 10 to 28°C. Rainfall is heavy, totalling around 509mm across the season with a monthly average of 170mm. Winds are generally light, averaging 11km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 2 to 13°C. Precipitation is moderate at around 269mm for the season, averaging 90mm per month. Winds are generally light, averaging 13km/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 Miyakonojō 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.
