Weather in December
Sea temperature
In Omuta, Japan, the average seawater temperature in December is 18.3°C (64.9°F).Note: Swimming is not a pleasurable activity for most people when the water temperature is 18.3°C (64.9°F). Breathing control gets harder as the water temperature drops from 21°C (69.8°F) to 15°C (59°F).
Daylight
The month with the shortest days is December, with an average of 10h and 0min of daylight.On the first day of December, sunrise is at 07:03 and sunset at 17:11. On the last day of the month, sunrise is at 07:20 and sunset at 17:21 JST.
Frequently asked questions
How cold is the water in December in Omuta?
In Omuta, Japan, in December, the average water temperature is 18.3°C (64.9°F). For swimming, a surface water temperature of 18.3°C (64.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
What is the month with the shortest days in Omuta?
The month with the shortest days in Omuta is December, with an average of 10h and 0min of daylight.
How many hours of daylight does Omuta have in December?
In Omuta, the average day length in December is 10h and 1min.
What time are sunrise and sunset in December in Omuta?
In December, on the first day of the month, sunrise is at 07:03 and sunset at 17:11. On the last day of the month, in Omuta, Japan, sunrise is at 07:20 and sunset at 17:21 JST.
Average sea temperature in December
Omuta, Japan
- Average sea temperature in December: 18.3°C
The best month for swimming (with the highest average sea temperature) is August (27.6°C).
The coldest month (with the lowest average sea temperature) is March (14.4°C).
Average daylight in December
Omuta, Japan
- Average daylight in December: 10h and 0min
The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).
Omuta, Japan
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