December weather forecast
Natsushimacho, Japan

December

Weather in December

The first month of the winter, December, is still a cool month in Natsushimacho, Japan, with an average temperature varying between 12.5°C (54.5°F) and 8.4°C (47.1°F).

Temperature

December witnesses a gentle descent in average high-temperature, descending from November's comfortable 17.1°C (62.8°F) to a fresh 12.5°C (54.5°F). During the nights of December, the average low-temperature holds at a frosty 8.4°C (47.1°F).

Humidity

In Natsushimacho, the average relative humidity in December is 64%.

Rainfall

February and December are months with the least rain when the rain falls for 8.7 days and typically aggregates up to 39mm (1.54") of rain.

Snowfall

April through December are months without snowfall.

Daylight

December has the shortest days of the year, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 06:31 and sunset at 16:29. On the last day of December, sunrise is at 06:49 and sunset at 16:39 JST.

Sunshine

In Natsushimacho, the average sunshine in December is 6.1h.

UV index

January, February and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index estimate of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the average person.
Note: The average daily UV index of 3 in December transforms into the following instructions:
Preventative actions are necessary - Recommendations to ward off sunburn are given. Limiting exposure to the direct Sun during midday hours can help prevent harmful UV radiation effects. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.

Frequently asked questions

What is the average December temperature?
An average high-temperature, in December, in Natsushimacho, is 12.5°C (54.5°F) and the average low-temperature is 8.4°C (47.1°F). The average heat index (a.k.a. 'real feel', 'feels like'), which combines air temperature and relative humidity, in August is evaluated at 34°C (93.2°F).
What is the average humidity in December?
In December, the average relative humidity is 64%.
What is the driest month?
February and December are months with the least rain in Natsushimacho when the rain falls for 8.7 days and typically aggregates up to 39mm (1.54") of rain.
How many days does it rain in December?
In Natsushimacho, during December, the rain falls for 8.7 days and regularly aggregates up to 39mm (1.54") of precipitation.
When it does not snow?
In Natsushimacho, snow does not fall in April through December.
Does it snow in December?
In Natsushimacho, in December, it doesn't snow. In January, it regularly snows.
What is the month with the shortest days?
The month with the shortest days is December, with an average of 9h and 48min of daylight.
How many hours of daylight does Natsushimacho have in December?
In December, the average day length is 9h and 50min.
When is the sunrise / sunset in December?
In December, on the first day of the month, sunrise is at 06:31 and sunset at 16:29. On the last day of the month, sunrise is at 06:49 and sunset at 16:39 JST.
How long on average sun shines in December?
In December, the average sunshine duration is 6.1h.
When is the lowest UV index in Natsushimacho?
The months with the lowest UV index are January, February and December, with an average maximum UV index of 3.
How high is the UV index in December?
In Natsushimacho, the average daily maximum UV index in December is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability from exposure to the Sun's UV radiation.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December
Natsushimacho, Japan
  • Average high temperature in December: 12.5°C

The warmest month (with the highest average high temperature) is August (28.8°C).
The month with the lowest average high temperature is January (9.8°C).

  • Average low temperature in December: 8.4°C

The month with the highest average low temperature is August (25.3°C).
The coldest month (with the lowest average low temperature) is January (5.3°C).

Average pressure in December
Natsushimacho, Japan
  • Average pressure in December: 1016.2mbar

The month with the highest atmospheric pressure is November (1017.9mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Natsushimacho, Japan
  • Average wind speed in December: 19.1km/h

The windiest month (with the highest average wind speed) is March (20.8km/h).
The calmest month (with the lowest average wind speed) is June (15.9km/h).

Average humidity in December
Natsushimacho, Japan
  • Average humidity in December: 64%

The month with the highest relative humidity is July (83%).
The month with the lowest relative humidity is January (61%).

Average rainfall in December
Natsushimacho, Japan
  • Average rainfall in December: 39mm

The wettest month (with the highest rainfall) is October (119mm).
The driest months (with the least rainfall) are February and December (39mm).

Average rainfall days in December
Natsushimacho, Japan
  • Average rainfall days in December: 8.7 days

The month with the highest number of rainy days is June (16.5 days).
The month with the least rainy days is January (6.5 days).

Average snowfall in December
Natsushimacho, Japan
  • Average snowfall in December: 0mm

The month with the highest snowfall is February (10mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Natsushimacho, Japan
  • Average snowfall days in December: 0 days

The month with the highest number of snowfall days is February (0.5 days).
The months with the least snowfall days are April, May, June, July, August, September, October, November and December (0 days).

Average daylight in December /
Average sunshine in December
Natsushimacho, 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).

  • Average sunshine in December: 6h and 1min

The month with the most sunshine is August (Average sunshine: 10h and 42min).
The month with the least sunshine is February (Average sunshine: 5h and 30min).

Average sunshine days in December
Natsushimacho, Japan
  • Average sunshine days in December: 21.3 days

The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is June (11.4 days).

Average UV index in December
Natsushimacho, Japan
  • Average UV index in December: 3

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January, February and December (UV index 3).

Average cloud cover in December
Natsushimacho, Japan
  • Average cloud cover in December: 31

The months with the most cloud cover are March, June and October (Cloud cover 43).
The month with the least cloud cover is August (Cloud cover 29).

Average visibility in December
Natsushimacho, Japan
  • Average visibility in December: 10km

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

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