Hiroshima Weather: December
 |
Average Day Temperature: | 49.7°F |
|
Average Night Temperature: | 38.2°F |
|
Sea Water Temperature: | 62.1°F |
|
Number of Sunny Days: | 11 days |
| Sunshine Hours: | 9.9 - 10.0 hours | |
|
Number of Rainy Days: | 4 days |
| Precipitation Totals: | 2.3 in | |
| detailed information | ||
forecast
| Hiroshima |
Temperature
| Hiroshima |
Air Temperature in December, °F
The highest day temperature in December 2025 was 63°F. The lowest night temperature was 29°F. The average values for day and night temperatures during December were 50.4°F и 39.6°F respectivly.
Hiroshima Water Sea Temperature in December, °F
The average sea surface temperature in December 2025 for Hiroshima was 62.7°F. The maximum and minimum values were 60.4°F and 66.4°F respectively.
You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.
Precipitation Totals in December, in
Precipitation total in December for Hiroshima is 2.3 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.
Hiroshima on the Weather Map
| Atami |  |
+32 |
| Fukuoka | |
+32 |
| Hakone |  |
+34 |
| Hiroshima | |
+28 |
| Kamakura | |
+40 |
| Kyoto |  |
+28 |
| Nagasaki | |
+36 |
| Nagoya |  |
+32 |
| Nara | |
+30 |
| Noboribetsu | |
+26 |
| Okinawa | |
+56 |
| Osaka | |
+32 |
| Sapporo |  |
+22 |
| Tokyo | |
+36 |
| Yokohama | |
+38 |
| 0000 |  |
28°F | SE 13 mph |
| 0300 |  |
28°F | E 8 mph |
| 0600 | |
28°F | E 3 mph |
| 0900 |  |
32°F | NE 4 mph |
| 1200 |  |
38°F | N 3 mph |
| 1500 | |
42°F | NE 7 mph |
| 1800 | |
34°F | NE 8 mph |
| 2100 | |
38°F | NE 11 mph |