Gunma in Japan sees its peak temperatures in August (27°C (81°F)) and its coolest in January (3°C (37°F)). For a full breakdown of what to expect throughout the year, we've put together a climate overview based on data from Minakami, the region's most visited city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
In Gunma, the months of May, June, July and September bring pleasant weather, with average temperatures ranging between 20°C (68°F) and 26°C (79°F).
The coldest months are usually in January, February, March and December.
When it comes to rainfall, Gunma sees significant variations throughout the year. July tends to be the wettest, receiving 213 mm (8.4 in) of rain, while November is much drier with just 87 mm (3.4 in). Travelers should note that the rainy season falls during July and September, bringing substantial precipitation ranging from 199 mm (7.8 in) to 213 mm (8.4 in) monthly.
August is the sunniest period, with ideal conditions for exploring the region and all it has to offer.
