Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
December
Weather in December
Temperature
Onset of December comes with a temperature decline, the average high falling from a frosty 9.5°C (49.1°F) in November to an icy 2.9°C (37.2°F). During December nights, Iwamurada witnesses a consistent average temperature of -4.9°C (23.2°F).Humidity
In December, the average relative humidity is 80%.Rainfall
December is the month with the least rainfall in Iwamurada. Rain falls for 15 days and accumulates 43mm (1.69") of precipitation.Snowfall
Months with snowfall in Iwamurada are January through April, November and December. In Iwamurada, in December, snow falls for 15.9 days, with typically accumulated 147mm (5.79") of snow. In Iwamurada, during the entire year, snow falls for 77.1 days and aggregates up to 965mm (37.99") of snow.Daylight
December has the shortest days of the year in Iwamurada, with an average of 9h and 42min of daylight.On the first day of the month, sunrise is at 06:38 and sunset at 16:31. On the last day of December, sunrise is at 06:57 and sunset at 16:41 JST.
Sunshine
In Iwamurada, the average sunshine in December is 5.9h.UV index
The average daily maximum UV index in December in Iwamurada is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 2 in December suggests the following recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Iwamurada in December?
What is the average humidity in December in Iwamurada?
What is the driest month in Iwamurada?
How many days does it rain in December in Iwamurada?
How many days does it snow in December in Iwamurada?
What is the month with the shortest days in Iwamurada?
What is the average length of the day in December in Iwamurada?
When is the sunrise / sunset in December in Iwamurada?
How many hours of sunshine does Iwamurada have in December?
What is the UV index reading in December in Iwamurada?
Average temperature in December
Iwamurada, Japan
- Average high temperature in December: 2.9°C
The warmest month (with the highest average high temperature) is August (26.1°C).
The month with the lowest average high temperature is January (-0.2°C).
- Average low temperature in December: -4.9°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in December
Iwamurada, Japan
- Average pressure in December: 1017.4mbar
The month with the highest atmospheric pressure is November (1018.9mbar).
The month with the lowest atmospheric pressure is June (1009.2mbar).
Average wind speed in December
Iwamurada, Japan
- Average wind speed in December: 9.1km/h
The windiest month (with the highest average wind speed) is January (9.5km/h).
The calmest month (with the lowest average wind speed) is August (5.8km/h).
Average humidity in December
Iwamurada, Japan
- Average humidity in December: 80%
The months with the highest relative humidity are July and September (86%).
The month with the lowest relative humidity is May (74%).
Average rainfall in December
Iwamurada, Japan
- Average rainfall in December: 43mm
The wettest month (with the highest rainfall) is October (137mm).
The driest month (with the least rainfall) is December (43mm).
Average rainfall days in December
Iwamurada, Japan
- Average rainfall days in December: 15 days
The month with the highest number of rainy days is May (19.5 days).
The month with the least rainy days is January (13.3 days).
Average snowfall in December
Iwamurada, Japan
- Average snowfall in December: 147mm
The month with the highest snowfall is January (276mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Iwamurada, Japan
- Average snowfall days in December: 15.9 days
The month with the highest number of snowfall days is January (22 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Iwamurada, Japan
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 36min).
The month with the shortest days is December (Average daylight: 9h and 42min).
- Average sunshine in December: 5h and 5min
The month with the most sunshine is May (Average sunshine: 9h and 24min).
The month with the least sunshine is February (Average sunshine: 5h and 24min).
Average sunshine days in December
Iwamurada, Japan
- Average sunshine days in December: 7.7 days
The month with the most sunshine days is July (14.9 days).
The month with the least sunshine days is February (5.8 days).
Average UV index in December
Iwamurada, Japan
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in December
Iwamurada, Japan
- Average cloud cover in December: 45
The month with the most cloud cover is September (Cloud cover 62).
The month with the least cloud cover is May (Cloud cover 44).
Average visibility in December
Iwamurada, Japan
- Average visibility in December: 8km
The months with the highest visibility are January, March, April, May and December (8km).
The months with the lowest visibility are July, August, September and October (6km).
