Climate Overview
The climate in Katori-shi is temperate. The average annual temperature is 17°C and approximately 1526mm of precipitation falls per year. Katori-shi receives a notable amount of rainfall throughout the year, including during its driest month. Katori-shi 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 4°C.
Temperature
Temperatures in Katori-shi vary considerably across the year, with a 26°C difference between the coldest and warmest months. The warmest month is August, when average highs reach 30°C and the mean temperature sits around 27°C. January is the coolest month, with minimum temperatures around 4°C and an average of 6°C. Daily temperature variation is modest, with an average difference of 5°C between highs and lows. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.
Precipitation
Katori-shi is a fairly wet location, receiving approximately 1526mm of precipitation annually, which averages out to around 127mm per month. The wettest month is October, averaging 198mm of rainfall. June and September also tend to see above-average precipitation. The driest month is January, with just 61mm. 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.
Wind
Katori-shi is mildly breezy, with an average annual wind speed of 14km/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 15km/h, though still comfortable for most outdoor activities. The calmest conditions occur in June, with average winds dropping to 13km/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
7 days until Autumn
It is currently summer in Katori-shi, which began on June 21, 2026. Katori-shi 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 30°C, while the coldest stretch bottoms out in January near 4°C. Autumn is next, beginning on September 23, 2026 (7 days from now).
Spring
Temperatures range from 8 to 21°C. Rainfall is heavy, totalling around 415mm across the season with a monthly average of 138mm. Winds are moderate at around 15km/h. An umbrella or waterproof jacket is advisable as spring showers are frequent.
Summer
Temperatures range from 20 to 30°C. Rainfall is heavy, totalling around 453mm across the season with a monthly average of 151mm. Winds are generally light, averaging 13km/h. Light, breathable clothing is ideal. Perfect conditions for outdoor activities.
Autumn
Temperatures range from 12 to 27°C. Rainfall is heavy, totalling around 465mm across the season with a monthly average of 155mm. Winds are generally light, averaging 14km/h. A waterproof jacket and sturdy footwear are recommended as rain becomes more frequent.
Winter
Temperatures range from 4 to 12°C. Precipitation is moderate at around 194mm for the season, averaging 65mm per month. Winds are generally light, averaging 15km/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 Katori-shi 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.
