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 an icy 2.7°C (36.9°F) in November to a subzero cold -1°C (30.2°F). December nighttime temperatures hover close to the daytime peak with an average of -4.5°C (23.9°F).Humidity
In December, the average relative humidity in Somero is 93%.Rainfall
In December, the rain falls for 7.4 days. Throughout December, 35mm (1.38") of precipitation is accumulated. Throughout the year, there are 128.2 rainfall days, and 406mm (15.98") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Somero. In Somero, in December, during 15.8 snowfall days, 147mm (5.79") of snow is typically accumulated. Throughout the year, there are 82.5 snowfall days, and 750mm (29.53") of snow is accumulated.Daylight
With an average of 5h and 48min of daylight, December has the shortest days of the year in Somero.On the first day of December, sunrise is at 09:07 and sunset at 15:23. On the last day of the month, sunrise is at 09:34 and sunset at 15:24 EET.
Sunshine
December has the least sunshine of the year in Somero, with an average of 1.7h 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 in Somero. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 1 suggests this advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Wearing sunglasses with both UVA and UVB protection effectively reduces sun-induced eye damage. 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 Somero in December?
What is the average humidity in December in Somero?
How many days does it rain in December in Somero?
How much does it snow in Somero in December?
What is the month with the shortest days in Somero?
What is the average length of the day in December in Somero?
When is the sunrise / sunset in December in Somero?
What is the month with the least sunshine in Somero?
How many hours of sunshine does Somero have in December?
When is the lowest UV index in Somero?
What is the UV index reading in December in Somero?
Average temperature in December
Somero, Finland
- Average high temperature in December: -1°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-4°C).
- Average low temperature in December: -4.5°C
The month with the highest average low temperature is July (12.2°C).
The coldest month (with the lowest average low temperature) is January (-8.1°C).
Average pressure in December
Somero, Finland
- Average pressure in December: 1007.8mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.8mbar).
Average wind speed in December
Somero, Finland
- Average wind speed in December: 14.2km/h
The windiest month (with the highest average wind speed) is December (14.2km/h).
The calmest month (with the lowest average wind speed) is August (10.8km/h).
Average humidity in December
Somero, Finland
- Average humidity in December: 93%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is May (68%).
Average rainfall in December
Somero, Finland
- Average rainfall in December: 35mm
The wettest month (with the highest rainfall) is July (54mm).
The driest month (with the least rainfall) is April (24mm).
Average rainfall days in December
Somero, Finland
- Average rainfall days in December: 7.4 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Somero, Finland
- Average snowfall in December: 147mm
The month with the highest snowfall is February (165mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Somero, Finland
- Average snowfall days in December: 15.8 days
The month with the highest number of snowfall days is February (18 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Somero, Finland
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in December: 1h and 4min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in December
Somero, Finland
- Average sunshine days in December: 11 days
The month with the most sunshine days is May (15.1 days).
The month with the least sunshine days is February (9.6 days).
Average UV index in December
Somero, 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
Somero, Finland
- Average cloud cover in December: 75
The month with the most cloud cover is February (Cloud cover 77).
The month with the least cloud cover is August (Cloud cover 42).
Average visibility in December
Somero, Finland
- Average visibility in December: 7km
The months with the highest visibility are May, June, July and August (9km).
The month with the lowest visibility is February (6km).
