December weather forecastHashihama, Japan

December

Weather in December

December, the first month of the winter in Hashihama, is also a frosty month, with an average temperature ranging between min 4.4°C (39.9°F) and max 9.6°C (49.3°F).

Temperature

During Hashihama's transition into December, the average high-temperature lessens, moving from a moderate 15.1°C (59.2°F) in November to a frosty 9.6°C (49.3°F). In Hashihama, December nights cool down to an average of 4.4°C (39.9°F).

Humidity

In Hashihama, the average relative humidity in December is 75%.

Rainfall

In December, the rain falls for 15.3 days. Throughout December, 45mm (1.77") of precipitation is accumulated. Throughout the year, there are 157.6 rainfall days, and 677mm (26.65") of precipitation is accumulated.

Snowfall

January through March and December are months with snowfall. December is the first month it typically snows in Hashihama. Throughout December, in the average 3.2 snowfall days, it receives 14mm (0.55") of snow. Throughout the year, there are 12.4 snowfall days, and 49mm (1.93") of snow is accumulated.

Daylight

With an average of 9h and 54min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 06:55 and sunset at 16:58. On the last day of December, sunrise is at 07:13 and sunset at 17:08 JST.

Sunshine

In December, the average sunshine in Hashihama is 5.1h.

UV index

The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Enhance your sun protection with tightly woven, yet airy clothing. On your guard! Snow's reflection can almost double the intensity of the Sun's UV radiation.

Frequently asked questions

Hashihama in December has an average high-temperature of 9.6°C (49.3°F) and an average low-temperature of 4.4°C (39.9°F). In August, the average heat index (a.k.a. 'real feel', 'felt air temperature'), which combines relative humidity and air temperature, is appraised at 37°C (98.6°F).

In December, the average relative humidity is 75%.

In Hashihama, in December, it is raining for 15.3 days, with typically 45mm (1.77") of accumulated precipitation.

December is the first month it typically snows in Hashihama. Throughout December, in the average 3.2 snowfall days, it receives 14mm (0.55") of snow.

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

In Hashihama, the average day length in December is 9h and 56min.

On the first day of December in Hashihama, sunrise is at 06:55 and sunset at 16:58. On the last day of the month, sunrise is at 07:13 and sunset at 17:08 JST.

The average sunshine duration in December in Hashihama is 5.1h.

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

In December, the average daily maximum UV index in Hashihama, Japan, is 2. A UV Index reading of 2, and below, represents a low health threat from unsafe exposure to Sun's UV rays.
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 sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Hashihama, Japan

  • Average high temperature in December: 9.6°C

The warmest month (with the highest average high temperature) is August (29.8°C).
The month with the lowest average high temperature is January (7.3°C).

  • Average low temperature in December: 4.4°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°C).

Average pressure in December
Hashihama, Japan

  • Average pressure in December: 1020.5mbar

The month with the highest atmospheric pressure is January (1020.9mbar).
The month with the lowest atmospheric pressure is June (1008.4mbar).

Average wind speed in December
Hashihama, Japan

  • Average wind speed in December: 11km/h

The windiest month (with the highest average wind speed) is January (11.2km/h).
The calmest month (with the lowest average wind speed) is June (6.5km/h).

Average humidity in December
Hashihama, Japan

  • Average humidity in December: 75%

The month with the highest relative humidity is July (82%).
The month with the lowest relative humidity is March (72%).

Average rainfall in December
Hashihama, Japan

  • Average rainfall in December: 45mm

The wettest month (with the highest rainfall) is June (108mm).
The driest months (with the least rainfall) are January and November (30mm).

Average rainfall days in December
Hashihama, Japan

  • Average rainfall days in December: 15.3 days

The month with the highest number of rainy days is July (18.6 days).
The month with the least rainy days is May (10.3 days).

Average snowfall in December
Hashihama, Japan

  • Average snowfall in December: 14mm

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

Average snowfall days in December
Hashihama, Japan

  • Average snowfall days in December: 3.2 days

The month with the highest number of snowfall days is January (5.2 days).
The months with the least snowfall days are April, May, June, July, August, September, October and November (0 days).

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

  • Average daylight in December: 9h and 54min

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 6min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is January (Average sunshine: 5h and 0min).

Average sunshine days in December
Hashihama, Japan

  • Average sunshine days in December: 12.1 days

The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is July (10.7 days).

Average UV index in December
Hashihama, 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).

Average cloud cover in December
Hashihama, Japan

  • Average cloud cover in December: 44

The month with the most cloud cover is January (Cloud cover 45).
The month with the least cloud cover is August (Cloud cover 31).

Average visibility in December
Hashihama, Japan

  • Average visibility in December: 10km

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