December weather forecast
Oita, Japan

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Weather in December

December marks the arrival of winter in Oita, with the temperatures dropping to the lowest levels of the year. The month also sees light snowfall, setting a quintessential winter scene. Rainfall remains at moderate levels and does not considerably change from November. The sea temperature keeps diminishing from the warmed-up summer months. The progression into January carries forward the winter conditions with cool temperatures and increased chances of snowfall.

Temperature

December in Oita involves a decrease in temperature, down from a refreshing 16.2°C (61.2°F) in November to a cool 10.8°C (51.4°F). During December, Oita records an average temperature of 4.9°C (40.8°F) at night.

Humidity

In Oita, the average relative humidity in December is 76%.

Rainfall

In Oita, during December, the rain falls for 9.8 days and regularly aggregates up to 25mm (0.98") of precipitation. Throughout the year, there are 145.1 rainfall days, and 599mm (23.58") of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 1.3 snowfall days, it receives 1mm (0.04") of snow. In Oita, during the entire year, snow falls for 5.5 days and aggregates up to 5mm (0.2") of snow.

Sea temperature

In Oita, the average seawater temperature in December is 17.6°C (63.7°F).
Note: Swimming in water that is 17.6°C (63.7°F) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in Oita.
On the first day of December in Oita, sunrise is at 06:59 and sunset at 17:06. On the last day of the month, sunrise is at 07:16 and sunset at 17:16 JST.

Sunshine

In December, the average sunshine in Oita is 5.7h.

UV index

The months with the lowest UV index in Oita, Japan, are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.
Note: The maximum daily UV index of 2 in December interprets into the following recommendations:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Combat UV radiation's detrimental effects with sun-safe clothing and UV-blocking eyewear. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
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Frequently asked questions

What is the usual temperature for Oita in December?

The high-temperature, in December, in Oita, is 10.8°C (51.4°F), while the low-temperature averages to 4.9°C (40.8°F). In August, the average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, is evaluated at 38°C (100.4°F).

What is the average humidity in December in Oita?

The average relative humidity in December in Oita is 76%.

How much does it rain in Oita in December?

In Oita, Japan, in December, during 9.8 rainfall days, 25mm (0.98") of precipitation is typically accumulated.

When does it start to snow in Oita?

December is the first month it typically snows. Throughout December, in the average 1.3 snowfall days, it receives 1mm (0.04") of snow.

What is the sea temperature in December in Oita?

In Oita, Japan, in December, the average water temperature is 17.6°C (63.7°F). For most, swimming in 17.6°C (63.7°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 Oita?

The month with the shortest days in Oita, Japan, is December, with an average of 10h and 0min of daylight.

What is the average length of the day in December in Oita?

The average day length in December in Oita is 10h and 0min.

When is the sunrise / sunset in December in Oita?

In December, on the first day of the month, sunrise is at 06:59 and sunset at 17:06. On the last day of the month, in Oita, Japan, sunrise is at 07:16 and sunset at 17:16 JST.

How many hours of sunshine does Oita have in December?

The average sunshine duration in December in Oita, Japan, is 5.7h.

When is the lowest UV index in Oita?

The months with the lowest UV index are January and December, with an average maximum UV index of 2.

What is the UV index intensity in December in Oita?

The average daily maximum UV index in December in Oita is 2. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover

Average temperature in December
Oita, Japan

Average temperature in December - Oita, Japan
  • Average high temperature in December: 10.8°C

The warmest month (with the highest average high temperature) is August (30°C).
The month with the lowest average high temperature is January (8.9°C).

  • Average low temperature in December: 4.9°C

The month with the highest average low temperature is August (23.4°C).
The coldest month (with the lowest average low temperature) is January (3°C).

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Average pressure in December
Oita, Japan

Average pressure in December - Oita, Japan
  • Average pressure in December: 1021mbar

The month with the highest atmospheric pressure is January (1021.5mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).

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Average wind speed in December
Oita, Japan

Average wind speed in December - Oita, Japan
  • Average wind speed in December: 12.3km/h

The windiest month (with the highest average wind speed) is January (12.4km/h).
The calmest months (with the lowest average wind speed) are June and July (7.2km/h).

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Average humidity in December
Oita, Japan

Average humidity in December - Oita, Japan
  • Average humidity in December: 76%

The month with the highest relative humidity is July (84%).
The month with the lowest relative humidity is March (72%).

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Average rainfall in December
Oita, Japan

Average rainfall in December - Oita, Japan
  • Average rainfall in December: 25mm

The wettest month (with the highest rainfall) is July (93mm).
The driest months (with the least rainfall) are January and November (21mm).

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Average rainfall days in December
Oita, Japan

Average rainfall days in December - Oita, Japan
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is July (20.7 days).
The month with the least rainy days is January (7.3 days).

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Average snowfall in December
Oita, Japan

Average snowfall in December - Oita, Japan
  • Average snowfall in December: 1mm

The month with the highest snowfall is January (2mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in December
Oita, Japan

Average snowfall days in December - Oita, Japan
  • Average snowfall days in December: 1.3 days

The month with the highest number of snowfall days is January (2.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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Average sea temperature in December
Oita, Japan

Average sea temperature in December - Oita, Japan
  • Average sea temperature in December: 17.6°C

The best month for swimming (with the highest average sea temperature) is August (26.9°C).
The coldest month (with the lowest average sea temperature) is February (13.5°C).

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Average daylight in December /
Average sunshine in December
Oita, Japan

Average daylight in December / Average sunshine in December - Oita, 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).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is August (Average sunshine: 10h and 24min).
The month with the least sunshine is January (Average sunshine: 5h and 36min).

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Average sunshine days in December
Oita, Japan

Average sunshine days in December - Oita, Japan
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is July (7.8 days).

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Average UV index in December
Oita, Japan

Average UV index in December - Oita, Japan
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Oita, Japan

Average cloud cover in December - Oita, Japan
  • Average cloud cover in December: 37

The month with the most cloud cover is June (Cloud cover 47).
The month with the least cloud cover is August (Cloud cover 33).

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Average visibility in December
Oita, Japan

Average visibility in December - Oita, Japan
  • Average visibility in December: 10km

The months with the highest visibility are January, February, March, November and December (10km).
The months with the lowest visibility are June and July (8km).

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Oita, Japan

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