December weather forecastKatase, Japan

December

Weather in December

December, the first month of the winter in Katase, is also a fresh month, with temperature in the range of an average low of 7°C (44.6°F) and an average high of 11.8°C (53.2°F).

Temperature

The beginning of December subtly marks a decrease in the average high-temperature, transitioning from a comfortable 16.7°C (62.1°F) in November to a cool 11.8°C (53.2°F). Throughout December in Katase, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of 7°C (44.6°F).

Humidity

In Katase, the average relative humidity in December is 63%.

Rainfall

In December, in Katase, the rain falls for 6.1 days. Throughout December, 13mm (0.51") of precipitation is accumulated. Throughout the year, in Katase, Japan, there are 129.4 rainfall days, and 351mm (13.82") of precipitation is accumulated.

Snowfall

In Katase, snow does not fall in April through December.

Daylight

December has the shortest days of the year in Katase, Japan, with an average of 9h and 48min of daylight.
On the first day of December in Katase, sunrise is at 06:32 and sunset at 16:29. On the last day of the month, sunrise is at 06:50 and sunset at 16:39 JST.

Sunshine

In Katase, Japan, the average sunshine in December is 6.4h.

UV index

The months with the lowest UV index in Katase, Japan, are January, February and December, with an average maximum UV index of 3. A UV Index value of 3 to 5 symbolizes a moderate health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The UV index of 3 in December translates into these instructions:
Undertake precautions - Obligation exists to protect against skin and eye damage. The Sun's harshest UV rays are around midday; it's wise to seek shade and limit time outdoors. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.

Updated: Jan 31, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

The average high-temperature, in December, in Katase, is 11.8°C (53.2°F), while the average low-temperature is 7°C (44.6°F). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which takes the relative humidity and factors it into the air temperature reading, in August is estimated at 36°C (96.8°F).

In December, the average relative humidity in Katase, Japan, is 63%.

In Katase, during December, the rain falls for 6.1 days and regularly aggregates up to 13mm (0.51") of precipitation.

April through December are months without snowfall.

In Katase, in December, it doesn't snow. In January, it regularly snows.

The month with the shortest days in Katase, Japan, is December, with an average of 9h and 48min of daylight.

The average day length in December is 9h and 50min.

In December, on the first day of the month, sunrise is at 06:32 and sunset at 16:29. On the last day of the month, in Katase, sunrise is at 06:50 and sunset at 16:39 JST.

In Katase, the average sunshine duration in December is 6.4h.

The months with the lowest UV index in Katase are January, February and December, with an average maximum UV index of 3.

In Katase, Japan, the average daily maximum UV index in December is 3. A UV Index value of 3 to 5 symbolizes a moderate vulnerability from exposure to the Sun's UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

16.7°C

11.8°C

9.3°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

16km/h

16.9km/h

16.8km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.2

22.2

Average UV index

Average cloud cover

36%

29%

Average visibility

10km

Average temperature in December
Katase, Japan

Average high temperature in December: 11.8°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 (9.3°C).

Average low temperature in December: 7°C

The month with the highest average low temperature is August (25.2°C).
The coldest month (with the lowest average low temperature) is January (3.9°C).

Average pressure in December
Katase, Japan

Average pressure in December: 1016.4mbar

The month with the highest atmospheric pressure is November (1018mbar).
The month with the lowest atmospheric pressure is June (1009.1mbar).

Average wind speed in December
Katase, Japan

Average wind speed in December: 15.4km/h

The windiest month (with the highest average wind speed) is March (17.4km/h).
The calmest month (with the lowest average wind speed) is June (13.9km/h).

Average humidity in December
Katase, Japan

Average humidity in December: 63%

The month with the highest relative humidity is July (79%).
The month with the lowest relative humidity is January (60%).

Average rainfall in December
Katase, Japan

Average rainfall in December: 13mm

The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is February (12mm).

Average rainfall days in December
Katase, Japan

Average rainfall days in December: 6.1 days

The month with the highest number of rainy days is July (15.3 days).
The month with the least rainy days is December (6.1 days).

Average snowfall in December
Katase, Japan

Average snowfall in December: 0mm

The month with the highest snowfall is February (3mm).
The months with the least snowfall are April, May, June, July, August, September, October, November and December (0mm).

Average snowfall days in December
Katase, Japan

Average snowfall days in December: 0.1 days

The month with the highest number of snowfall days is February (1 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
Katase, 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 24min

The month with the most sunshine is August (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 5h and 42min).

Average sunshine days in December
Katase, Japan

Average sunshine days in December: 22 days

The month with the most sunshine days is January (22.2 days).
The month with the least sunshine days is July (10.8 days).

Average UV index in December
Katase, 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
Katase, Japan

Average cloud cover in December: 29

The months with the most cloud cover are March and October (Cloud cover 43).
The months with the least cloud cover are January and December (Cloud cover 29).

Average visibility in December
Katase, 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).