Climate in Japan

Japan has a highly diverse climate, with major differences between regions. Annual temperatures range from lows of -71°C in the coldest regions to highs of 41°C in the warmest areas. Annual precipitation ranges from 3mm in drier regions to 381mm in wetter parts of the country. Some regions receive significant snowfall, with up to 204cm annually, while other areas see little to none. The warmest areas are hot year-round while the coldest regions remain very cold, making Japan a country of sharp climate contrasts.

Temperature patterns across Japan vary by region, with distinct differences between areas. The Northeast is the warmest part of the country, with peak temperatures reaching 41°C and an annual average of 29°C. Cooler conditions are found in the East, where winter lows drop to -71°C and an annual average of -62°C. This 91°C difference in annual averages between regions means travellers can experience vastly different conditions depending on which part of Japan they visit. The biggest regional differences emerge in summer, with up to 94°C variation across the country. For example, Sendai in the Miyagi-ken averages 29°C annually, while Saitama in the Saitama-ken averages -62°C.

Japan sees notable variation in rainfall across its regions, ranging from 3mm to 381mm per year. The Southeast receives the most rainfall, at approximately 381mm annually. The East is the driest, with around 3mm per year. Rainfall is distributed fairly evenly across the seasons, with no strong wet or dry period in most regions. The North sees the most snowfall, with up to 204cm annually, while other parts of the country receive little to none. Travellers should pack rain gear when visiting wetter areas, while drier regions offer more favourable conditions throughout the year.