Weather & climate FAQ — Japan
Answers to the most-searched weather and climate questions about Japan, from 2020–2024 daily observations across 10 cities.
Japan hub ★ Best time to visit Japan
Frequently asked questions
What is the weather like in Japan?
Climolog covers 10 cities in Japan with 2020–2024 daily weather observations. Typical monthly highs range from 7.6°C (in January) to 31.1°C (in August); see each city's page for day-by-day history and month-by-month averages.
What is the climate in Japan by month?
Across Japan, the hottest month is August (avg high 31.1°C) and the coldest is January (avg low -0.4°C). For the full month-by-month breakdown across every city, see the best-time-to-visit guide for Japan.
When is the best time to visit Japan?
The best months to visit Japan are October, November, May — the highest travel-comfort scores across the country's cities (comfortable temperatures, low rainfall, and good sunshine). See the month-by-month ranking for Japan for the best city in each month.
What is the hottest month in Japan?
August is the hottest month, averaging a high of 31.1°C across Japan's cities. See August climate details.
What is the coldest month in Japan?
January is the coldest month, averaging a low of -0.4°C across Japan's cities. See January climate details.
What is the wettest month in Japan?
July is the wettest month, averaging about 266.2 mm of rain per month across Japan's cities. See July climate details.
What is the driest month in Japan?
December is the driest month, averaging about 48.5 mm of rain per month across Japan's cities. See December climate details.
When is the rainy season in Japan?
The wettest months in Japan are June, July, August, which together form the main rainy season. Travel is usually drier and more comfortable in October.
Which city in Japan has the best weather?
Among Japan's cities, Hiroshima has the best weather — its best month is October (travel-comfort score 86/100). See its best-time-to-visit guide.
How many cities does Climolog cover in Japan?
Climolog covers 10 cities in Japan with 2020–2024 daily weather data. Browse them all on the Japan hub.
Best time to visit by month
Best time to visit in October Best time to visit in November Best time to visit in May
Each links to the month hub listing every city whose single best-weather month is that month.