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
The shift from November to December includes a small decrease in the average high-temperature, from a subzero cold -2.7°C (27.1°F) to a still freezing cold -6°C (21.2°F). Vaalajärvi records a consistent average nighttime temperature of -10.7°C (12.7°F) in December, slightly lower than the daytime high.Humidity
January, February, April and December, with an average relative humidity of 96%, are the most humid months.Rainfall
In Vaalajärvi, in December, during 3.1 rainfall days, 34mm (1.34") of precipitation is typically accumulated. In Vaalajärvi, Finland, during the entire year, the rain falls for 124.5 days and collects up to 468mm (18.43") of precipitation.Snowfall
Months with snowfall are January through June, September through December. The month with the most snowfall in Vaalajärvi, Finland, is December, when snow falls for 22.9 days and typically aggregates up to 261mm (10.28") of snow.Daylight
The average length of the day in December in Vaalajärvi is 1h and 16min.On the first day of the month, sunrise is at 10:35 and sunset at 13:33. On the last day of December, in Vaalajärvi, Finland, sunrise is at 11:33 and sunset at 13:03 EET.
Sunshine
In December, the average sunshine in Vaalajärvi is 0.8h.UV index
The months with the lowest UV index in Vaalajärvi are January through April, October through December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: A daily high UV index of 1 in December leads to these guidelines:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Vaalajärvi in December?
What are the most humid months in Vaalajärvi?
What is the average humidity in December in Vaalajärvi?
How many days does it rain in December in Vaalajärvi?
When does it snow the most in Vaalajärvi?
How many days does it snow in December in Vaalajärvi?
What is the average length of the day in December in Vaalajärvi?
When are sunrise and sunset in December in Vaalajärvi?
How many hours of sunshine does Vaalajärvi have in December?
When is the lowest UV index in Vaalajärvi?
What is the UV index reading in December in Vaalajärvi?
Average temperature in December
Vaalajärvi, Finland
- Average high temperature in December: -6°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (-8.8°C).
- Average low temperature in December: -10.7°C
The month with the highest average low temperature is July (10.3°C).
The coldest month (with the lowest average low temperature) is January (-14.6°C).
Average pressure in December
Vaalajärvi, Finland
- Average pressure in December: 1005.2mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1005.2mbar).
Average wind speed in December
Vaalajärvi, Finland
- Average wind speed in December: 11.1km/h
The windiest month (with the highest average wind speed) is March (11.5km/h).
The calmest month (with the lowest average wind speed) is April (9.9km/h).
Average humidity in December
Vaalajärvi, Finland
- Average humidity in December: 96%
The months with the highest relative humidity are January, February, April and December (96%).
The month with the lowest relative humidity is June (69%).
Average rainfall in December
Vaalajärvi, Finland
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is July (61mm).
The driest month (with the least rainfall) is January (29mm).
Average rainfall days in December
Vaalajärvi, Finland
- Average rainfall days in December: 3.1 days
The month with the highest number of rainy days is July (19.8 days).
The month with the least rainy days is January (2 days).
Average snowfall in December
Vaalajärvi, Finland
- Average snowfall in December: 261mm
The month with the highest snowfall is December (261mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Vaalajärvi, Finland
- Average snowfall days in December: 22.9 days
The month with the highest number of snowfall days is December (22.9 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Vaalajärvi, Finland
- Average daylight in December: 1h and 2min
The month with the longest days is May (Average daylight: 18h and 48min).
The month with the shortest days is June (Average daylight: 0h and 0min).
- Average sunshine in December: 0h and 5min
The month with the most sunshine is August (Average sunshine: 8h and 30min).
The month with the least sunshine is June (Average sunshine: 0h and 36min).
Average sunshine days in December
Vaalajärvi, Finland
- Average sunshine days in December: 8.8 days
The month with the most sunshine days is October (12.8 days).
The month with the least sunshine days is April (6.1 days).
Average UV index in December
Vaalajärvi, Finland
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 4).
The months with the lowest UV index are January, February, March, April, October, November and December (UV index 1).
Average cloud cover in December
Vaalajärvi, Finland
- Average cloud cover in December: 79
The month with the most cloud cover is January (Cloud cover 80).
The month with the least cloud cover is July (Cloud cover 52).
Average visibility in December
Vaalajärvi, Finland
- Average visibility in December: 5km
The months with the highest visibility are June, July and August (9km).
The months with the lowest visibility are January, February, March, April, November and December (5km).
