The highest day temperature in December 2024 was 60°F. The lowest night temperature was 31°F. The average values for day and night temperatures during December were 48.1°F и 38.5°F respectivly.

The average sea surface temperature in December 2024 for Hiroshima was 62.9°F. The maximum and minimum values were 59.2°F and 67.6°F respectively.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for Hiroshima is 2.5 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 5.9 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Hiroshima in December is 5.8 hours.