December weather forecast
Izumiotsu, Japan

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Weather in December

December, the first month of the winter in Izumiotsu, is also a fresh month, with an average temperature ranging between min 5.3°C (41.5°F) and max 10.3°C (50.5°F).

Temperature

The average high-temperature decreases in December, shifting from an enjoyable 16.2°C (61.2°F) in November to a fresh 10.3°C (50.5°F). Izumiotsu reports an average low-temperature of 5.3°C (41.5°F) during the nights of December.

Humidity

In Izumiotsu, the average relative humidity in December is 72%.

Rainfall

In Izumiotsu, Japan, during December, the rain falls for 9.7 days and regularly aggregates up to 37mm (1.46") of precipitation. In Izumiotsu, Japan, during the entire year, the rain falls for 140 days and collects up to 837mm (32.95") of precipitation.

Snowfall

January, February and December are months with snowfall in Izumiotsu. December is the first month it typically snows in Izumiotsu. Throughout December, in the average 0.6 snowfall days, it receives 5mm (0.2") of snow. In Izumiotsu, during the entire year, snow falls for 4.5 days and aggregates up to 32mm (1.26") of snow.

Sea temperature

In December, the average sea temperature in Izumiotsu, Japan, is 19.1°C (66.4°F).
Note: For most people, swimming in water at 19.1°C (66.4°F) is not a pleasurable experience. Breathing control gets harder as the water temperature descends from 21°C (69.8°F) to 15°C (59°F).

Daylight

The month with the shortest days is December, with an average of 9h and 54min of daylight.
On the first day of December, sunrise is at 06:46 and sunset at 16:48. On the last day of the month, sunrise is at 07:04 and sunset at 16:58 JST.

Sunshine

The average sunshine in December is 5h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for average individuals.
Note: A typical high UV index of 2 in December suggests the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. Avoiding the Sun's peak radiation during midday hours is essential for health and safety. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Heads up! The UV radiation from the Sun can almost be doubled by snow reflection.
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Frequently asked questions

What is the average December temperature in Izumiotsu?

December temperatures in Izumiotsu vary between a high-temperature of 10.3°C (50.5°F) and a low-temperature of 5.3°C (41.5°F). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is appraised at 30°C (86°F).

What is the average humidity in December in Izumiotsu?

In December, the average relative humidity in Izumiotsu, Japan, is 72%.

How many days does it rain in December in Izumiotsu?

In December, in Izumiotsu, the rain falls for 9.7 days. Throughout December, 37mm (1.46") of precipitation is accumulated.

When does it start to snow in Izumiotsu?

December is the first month it typically snows. Throughout December, in the average 0.6 snowfall days, it receives 5mm (0.2") of snow.

What is the sea water temperature in December in Izumiotsu?

In Izumiotsu, the average seawater temperature in December is 19.1°C (66.4°F). For most, swimming in 19.1°C (66.4°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 Izumiotsu?

With an average of 9h and 54min of daylight, December has the shortest days of the year.

How many hours of daylight does Izumiotsu have in December?

The average day length in December is 9h and 53min.

What time are sunrise and sunset in December in Izumiotsu?

In December, on the first day of the month, sunrise is at 06:46 and sunset at 16:48. On the last day of the month, sunrise is at 07:04 and sunset at 16:58 JST.

How many hours of sunshine does Izumiotsu have in December?

The average sunshine duration in December in Izumiotsu, Japan, is 5h.

When is the lowest UV index in Izumiotsu?

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

How high is the UV index in December in Izumiotsu?

The average daily maximum UV index in December in Izumiotsu is 2. A UV Index of 2, and less, symbolizes a minimal hazard to health from exposure to Sun's UV rays.
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
Izumiotsu, Japan

Average temperature in December - Izumiotsu, Japan
  • Average high temperature in December: 10.3°C

The warmest month (with the highest average high temperature) is August (31.7°C).
The month with the lowest average high temperature is January (7.8°C).

  • Average low temperature in December: 5.3°C

The month with the highest average low temperature is August (24.8°C).
The coldest month (with the lowest average low temperature) is January (2.9°C).

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Average pressure in December
Izumiotsu, Japan

Average pressure in December - Izumiotsu, Japan
  • Average pressure in December: 1019.3mbar

The month with the highest atmospheric pressure is February (1019.7mbar).
The month with the lowest atmospheric pressure is June (1008.8mbar).

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Average wind speed in December
Izumiotsu, Japan

Average wind speed in December - Izumiotsu, Japan
  • Average wind speed in December: 11.5km/h

The windiest month (with the highest average wind speed) is January (11.7km/h).
The calmest month (with the lowest average wind speed) is June (8.3km/h).

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Average humidity in December
Izumiotsu, Japan

Average humidity in December - Izumiotsu, Japan
  • Average humidity in December: 72%

The month with the highest relative humidity is July (77%).
The months with the lowest relative humidity are March, April and May (69%).

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Average rainfall in December
Izumiotsu, Japan

Average rainfall in December - Izumiotsu, Japan
  • Average rainfall in December: 37mm

The wettest month (with the highest rainfall) is July (137mm).
The driest month (with the least rainfall) is January (32mm).

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Average rainfall days in December
Izumiotsu, Japan

Average rainfall days in December - Izumiotsu, Japan
  • Average rainfall days in December: 9.7 days

The month with the highest number of rainy days is July (16.7 days).
The months with the least rainy days are January and February (8 days).

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Average snowfall in December
Izumiotsu, Japan

Average snowfall in December - Izumiotsu, Japan
  • Average snowfall in December: 5mm

The month with the highest snowfall is January (18mm).
The months with the least snowfall are March, April, May, June, July, August, September, October and November (0mm).

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Average snowfall days in December
Izumiotsu, Japan

Average snowfall days in December - Izumiotsu, Japan
  • Average snowfall days in December: 0.6 days

The month with the highest number of snowfall days is January (2.3 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
Izumiotsu, Japan

Average sea temperature in December - Izumiotsu, Japan
  • Average sea temperature in December: 19.1°C

The best month for swimming (with the highest average sea temperature) is August (27.7°C).
The coldest month (with the lowest average sea temperature) is February (15.6°C).

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

Average daylight in December / Average sunshine in December - Izumiotsu, Japan
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 5h and 0min

The month with the most sunshine is August (Average sunshine: 10h and 54min).
The months with the least sunshine are January and February (Average sunshine: 4h and 48min).

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Average sunshine days in December
Izumiotsu, Japan

Average sunshine days in December - Izumiotsu, Japan
  • Average sunshine days in December: 20.2 days

The month with the most sunshine days is January (20.4 days).
The month with the least sunshine days is July (12.3 days).

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Average UV index in December
Izumiotsu, Japan

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

The months with the highest UV index are July and August (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
Izumiotsu, Japan

Average cloud cover in December - Izumiotsu, Japan
  • Average cloud cover in December: 45

The month with the most cloud cover is January (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 29).

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Average visibility in December
Izumiotsu, Japan

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

The months with the highest visibility are January, February, March, August, September, October, November and December (10km).
The months with the lowest visibility are April, May, June and July (9km).

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Izumiotsu, Japan

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