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
December brings a minor shift in the average high-temperature, adjusting from a cold 2.5°C (36.5°F) in November to a subzero cold -1.7°C (28.9°F). Messukylä documents an average low-temperature of -4.8°C (23.4°F) for the nights of December.Humidity
In Messukylä, the average relative humidity in December is 93%.Rainfall
In December, the rain falls for 4.9 days. Throughout December, 19mm (0.75") of precipitation is accumulated. In Messukylä, Finland, during the entire year, the rain falls for 114.5 days and collects up to 256mm (10.08") of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 15.1 days. Throughout December, 84mm (3.31") of snow is accumulated. In Messukylä, during the entire year, snow falls for 85.3 days and aggregates up to 453mm (17.83") of snow.Daylight
The month with the shortest days is December, with an average of 5h and 30min of daylight.On the first day of December, sunrise is at 09:13 and sunset at 15:13. On the last day of the month, sunrise is at 09:41 and sunset at 15:13 EET.
Sunshine
The month with the least sunshine is December, with an average of 1.6h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Messukylä have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Messukylä, Finland
- Average high temperature in December: -1.7°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.3°C).
- Average low temperature in December: -4.8°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-8.4°C).
Average pressure in December
Messukylä, Finland
- Average pressure in December: 1007.5mbar
The month with the highest atmospheric pressure is May (1014.7mbar).
The month with the lowest atmospheric pressure is December (1007.5mbar).
Average wind speed in December
Messukylä, Finland
- Average wind speed in December: 12.6km/h
The windiest month (with the highest average wind speed) is December (12.6km/h).
The calmest month (with the lowest average wind speed) is July (10km/h).
Average humidity in December
Messukylä, Finland
- Average humidity in December: 93%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in December
Messukylä, Finland
- Average rainfall in December: 19mm
The wettest month (with the highest rainfall) is July (37mm).
The driest months (with the least rainfall) are March and April (16mm).
Average rainfall days in December
Messukylä, Finland
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Messukylä, Finland
- Average snowfall in December: 84mm
The months with the highest snowfall are January, February and March (86mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Messukylä, Finland
- Average snowfall days in December: 15.1 days
The month with the highest number of snowfall days is March (17.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Messukylä, Finland
- Average daylight in December: 5h and 3min
The month with the longest days is June (Average daylight: 19h and 18min).
The month with the shortest days is December (Average daylight: 5h and 30min).
- Average sunshine in December: 1h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 36min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in December
Messukylä, Finland
- Average sunshine days in December: 13.1 days
The month with the most sunshine days is October (17.1 days).
The month with the least sunshine days is February (10.4 days).
Average UV index in December
Messukylä, Finland
- Average UV index in December: 1
The months with the highest UV index are June and 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
Messukylä, Finland
- Average cloud cover in December: 76
The month with the most cloud cover is February (Cloud cover 79).
The months with the least cloud cover are July and August (Cloud cover 44).
Average visibility in December
Messukylä, Finland
- Average visibility in December: 7km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January, February and March (6km).
