The climate in Hiroshima during December can be summarized as cool and reasonably dry.
December is in the winter in Hiroshima and is typically the 3rd coldest month of the year. Daytime maximum temperatures average around a cool 11°C (52°F), whilst at night 3°C (37°F) is normal.
|Daytime temperature||10.9°C 51.5°F|
|Nightly temperature||2.6°C 36.6°F|
|Average temperature||6.7°C 44.1°F|
|Daily sunshine||4.4 hrs|
|Avg rainfall||47 mm 1.9 ins|
|Rainy days||17 days|
|Sea temperature||18.3°C 64.9°F|
|Windspeed||10.4kph 7 mph|
On average December is the driest month of the year in Hiroshima with around 47mm 1.9 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.4 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Hiroshima in December 2022.
|Hottest month:||August||30.6°C 87.1°F|
|Driest month:||December||47mm 1.9ins|
|Coldest month:||January||7.8°C 46°F|
|Wettest month:||June||267mm 10.5ins|