Weather by location Tokyo Located in the centre-east of the archipelago, Tokyo experiences fairly mild temperatures (outside the depths of winter), which makes it an attractive destination all year. Temperatures are crisp through spring, very hot in summer, and remain warm until October. The highest rainfall generally occurs during late September, with an average rainfall of about 191mm. MONTH AVERAGE HIGH  AVERAGE LOW  March to May 18°C11°C June to August 28°C22°C September to November 21°C15°C December to February 10°C4°C Yamagata Located in the north, Yamagata sees its heaviest month of rainfall in January when the temperature is unlikely to crack 3°C. July and September also experience moderate rain. While the summer can be warm during the day, the evenings cool down considerably. Temperatures in December drop hard and stay low throughout winter, with lots of snow – along with the rain expected in January.    MONTH  AVERAGE HIGH  AVERAGE LOW  March to May 12°C4°C June to August 25°C18°C September to November 17°C18°C December to February 2°C–4°C Hiroshima Hiroshima is southern and subtropical, with sweaty summers featuring heavy rainfall. It's not unusual for June and July to see 260 mm of rainfall as humidity goes above the 70 per cent mark. Winters in Hiroshima, on the other hand, can feature light snowfall through December, January and February.  MONTH AVERAGE HIGH  AVERAGE LOW  March to May 18°C10°C June to August 29°C23°C September to November 22°C14°C December to February 10°C2°C Osaka Osaka experiences a long warm period, as the temperatures increase sharply in May and stay high until the end of September before cooling in October. Rainfall peaks in June, with an average of 210 mm of rain throughout the month. Winter is relatively mild, with many clear days and a little snow in February.   MONTH  AVERAGE HIGH  AVERAGE LOW  March to May 19°C10°C June to August 31°C23°C September to November 17°C9°C December to February 10°C3°C Our Japan trips Get inspired on The Good Times