Weather in December
Sea temperature
In Narashino, Japan, in December, the average water temperature is 17.4°C (63.3°F).Note: Most people do not take pleasure in swimming in water at 17.4°C (63.3°F). The difficulty of managing breathing increases as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year in Narashino.On the first day of December, sunrise is at 06:31 and sunset at 16:26. On the last day of the month, sunrise is at 06:49 and sunset at 16:36 JST.
Frequently asked questions
How cold is the water in December in Narashino?
In Narashino, in December, the average water temperature is 17.4°C (63.3°F). For most, swimming in 17.4°C (63.3°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
What is the month with the shortest days in Narashino?
With an average of 9h and 48min of daylight, December has the shortest days of the year.
What is the average length of the day in December in Narashino?
In December, the average day length is 9h and 47min.
What time are sunrise and sunset in December in Narashino?
On the first day of December, sunrise is at 06:31 and sunset at 16:26. On the last day of the month, sunrise is at 06:49 and sunset at 16:36 JST.
Average sea temperature in December
Narashino, Japan
- Average sea temperature in December: 17.4°C
The best month for swimming (with the highest average sea temperature) is August (25.3°C).
The coldest month (with the lowest average sea temperature) is February (14.4°C).
Average daylight in December
Narashino, Japan
- Average daylight in December: 9h and 5min
The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).
Narashino, Japan
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