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
With the beginning of December, the average high-temperature shows a small decrease, transitioning from a cold 1.5°C (34.7°F) in November to a freezing cold -2.7°C (27.1°F). Keyritty observes an average low-temperature of -5.7°C (21.7°F) during the slightly cooler nights of December.Humidity
In December, the average relative humidity is 93%.Rainfall
In Keyritty, in December, during 5.2 rainfall days, 40mm (1.57") of precipitation is typically accumulated. In Keyritty, during the entire year, the rain falls for 106.5 days and collects up to 384mm (15.12") of precipitation.Snowfall
January through June, September through December are months with snowfall. In Keyritty, in December, snow falls for 21.1 days, with typically accumulated 216mm (8.5") of snow. Throughout the year, there are 110.8 snowfall days, and 1074mm (42.28") of snow is accumulated.Daylight
With an average of 4h and 42min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 09:16 and sunset at 14:34. On the last day of the month, sunrise is at 09:48 and sunset at 14:31 EET.
Sunshine
The month with the least sunshine is December, with an average of 0.8h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for average individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. The Sun's radiation is especially intense around midday; try to stay in shade during this period. Experience reduced UV exposure by about half when donning a wide-brim hat. Be alert to the fact! The reflection from snow can nearly double the UV radiation of the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Keyritty have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Keyritty have in December?
When is the lowest UV index?
How high is the UV index in December?
Average temperature in December
Keyritty, Finland
- Average high temperature in December: -2.7°C
The warmest month (with the highest average high temperature) is July (20.9°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in December: -5.7°C
The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-9.9°C).
Average pressure in December
Keyritty, Finland
- Average pressure in December: 1008mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in December
Keyritty, Finland
- Average wind speed in December: 14.7km/h
The windiest month (with the highest average wind speed) is November (15km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity in December
Keyritty, Finland
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (68%).
Average rainfall in December
Keyritty, Finland
- Average rainfall in December: 40mm
The wettest month (with the highest rainfall) is July (48mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in December
Keyritty, Finland
- Average rainfall days in December: 5.2 days
The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in December
Keyritty, Finland
- Average snowfall in December: 216mm
The month with the highest snowfall is January (230mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Keyritty, Finland
- Average snowfall days in December: 21.1 days
The month with the highest number of snowfall days is January (23.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Keyritty, Finland
- Average daylight in December: 4h and 4min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in December: 0h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 48min).
Average sunshine days in December
Keyritty, Finland
- Average sunshine days in December: 8.3 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in December
Keyritty, Finland
- Average UV index in December: 1
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 1).
Average cloud cover in December
Keyritty, Finland
- Average cloud cover in December: 81
The months with the most cloud cover are January and February (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Keyritty, Finland
- Average visibility in December: 7km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (5km).
