December weather forecastAtami, Japan
December
Weather in December
December, the first month of the winter in Atami, is still a cool month, with temperature in the range of an average high of 10.6°C (51.1°F) and an average low of 5.8°C (42.4°F).Temperature
December comes with a decrease in the average high-temperature, falling from a refreshing 15.7°C (60.3°F) in November to a cool 10.6°C (51.1°F). Atami's nocturnal average in December closely mirrors its daytime temperatures, settling at an icy 5.8°C (42.4°F).Humidity
The average relative humidity in December in Atami is 70%.Rainfall
In Atami, Japan, in December, during 9.8 rainfall days, 55mm (2.17") of precipitation is typically accumulated. In Atami, during the entire year, the rain falls for 174.9 days and collects up to 1233mm (48.54") of precipitation.Snowfall
In Atami, snow does not fall in March through December.Sea temperature
In Atami, in December, the average water temperature is 18.3°C (64.9°F).Note: Most people do not enjoy swimming in water that is 18.3°C (64.9°F). Breathing becomes increasingly challenging as the water temperature dips under 21°C (69.8°F).
Daylight
With an average of 9h and 48min of daylight, December has the shortest days of the year.On the first day of December in Atami, sunrise is at 06:33 and sunset at 16:31. On the last day of the month, sunrise is at 06:51 and sunset at 16:41 JST.
Sunshine
In Atami, the average sunshine in December is 6.2h.UV index
In Atami, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, a daily maximum UV index of 3 leads to the following instructions:
Undertake precautions - It is suggested to shield oneself from sunburn. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Atami, Japan
- Average high temperature in December: 10.6°C
The warmest month (with the highest average high temperature) is August (28.5°C).
The month with the lowest average high temperature is January (8.3°C).
- Average low temperature in December: 5.8°C
The month with the highest average low temperature is August (23.3°C).
The coldest month (with the lowest average low temperature) is January (2.8°C).
Average pressure in December
Atami, Japan
- Average pressure in December: 1016.6mbar
The month with the highest atmospheric pressure is November (1018.1mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).
Average wind speed in December
Atami, Japan
- Average wind speed in December: 14.4km/h
The windiest month (with the highest average wind speed) is March (15.2km/h).
The calmest month (with the lowest average wind speed) is August (11.7km/h).
Average humidity in December
Atami, Japan
- Average humidity in December: 70%
The month with the highest relative humidity is July (85%).
The month with the lowest relative humidity is January (67%).
Average rainfall in December
Atami, Japan
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is July (165mm).
The driest month (with the least rainfall) is January (52mm).
Average rainfall days in December
Atami, Japan
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is January (8.6 days).
Average snowfall in December
Atami, Japan
- Average snowfall in December: 0mm
The month with the highest snowfall is February (28mm).
The months with the least snowfall are March, April, May, June, July, August, September, October, November and December (0mm).
Average snowfall days in December
Atami, Japan
- Average snowfall days in December: 0.2 days
The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).
Average sea temperature in December
Atami, Japan
- Average sea temperature in December: 18.3°C
The best month for swimming (with the highest average sea temperature) is August (26.2°C).
The coldest month (with the lowest average sea temperature) is February (15.3°C).
Average daylight in December /
Average sunshine in December
Atami, Japan
- Average daylight in December: 9h and 48min
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).
- Average sunshine in December: 6h and 12min
The month with the most sunshine is August (Average sunshine: 10h and 0min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in December
Atami, Japan
- Average sunshine days in December: 18.9 days
The month with the most sunshine days is January (19.9 days).
The month with the least sunshine days is July (8.5 days).
Average UV index in December
Atami, Japan
- Average UV index in December: 3
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January and February (UV index 2).
Average cloud cover in December
Atami, Japan
- Average cloud cover in December: 30
The month with the most cloud cover is June (Cloud cover 48).
The month with the least cloud cover is January (Cloud cover 29).
Average visibility in December
Atami, Japan
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, August, October, November and December (10km).
The months with the lowest visibility are April, May, June, July and September (9km).
