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 minor decrease in the average high-temperature, lightly dropping from an icy 2.5°C (36.5°F) to a freezing cold -1.5°C (29.3°F). Siikainen's December nights experience a subtle temperature dip to an average of -5°C (23°F).Humidity
In Siikainen, the average relative humidity in December is 93%.Rainfall
In Siikainen, in December, during 8 rainfall days, 47mm (1.85") of precipitation is typically accumulated. In Siikainen, during the entire year, the rain falls for 144.9 days and collects up to 493mm (19.41") of precipitation.Snowfall
Months with snowfall are January through May, October through December. The month with the most snowfall is December, when snow falls for 20.3 days and typically aggregates up to 234mm (9.21") of snow.Daylight
With an average of 5h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 09:25 and sunset at 15:18. On the last day of the month, sunrise is at 09:54 and sunset at 15:17 EET.
Sunshine
The months with the least sunshine are January and December, with an average of 1.8h 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 value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: In December, the average maximum UV index of 1 translates into the following recommendations:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Keep in mind! Snow's reflective quality can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Siikainen in December?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Siikainen have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine in Siikainen?
How many hours of sunshine does Siikainen have in December?
When is the lowest UV index?
How high is the UV index in December in Siikainen?
Average temperature in December
Siikainen, Finland
- Average high temperature in December: -1.5°C
The warmest month (with the highest average high temperature) is July (21.3°C).
The month with the lowest average high temperature is January (-4.3°C).
- Average low temperature in December: -5°C
The month with the highest average low temperature is July (12°C).
The coldest month (with the lowest average low temperature) is January (-8.3°C).
Average pressure in December
Siikainen, Finland
- Average pressure in December: 1006.8mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1006.8mbar).
Average wind speed in December
Siikainen, Finland
- Average wind speed in December: 13.1km/h
The windiest month (with the highest average wind speed) is December (13.1km/h).
The calmest months (with the lowest average wind speed) are July and August (10.6km/h).
Average humidity in December
Siikainen, Finland
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is May (67%).
Average rainfall in December
Siikainen, Finland
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are April and September (34mm).
Average rainfall days in December
Siikainen, Finland
- Average rainfall days in December: 8 days
The month with the highest number of rainy days is July (17.7 days).
The month with the least rainy days is February (4.7 days).
Average snowfall in December
Siikainen, Finland
- Average snowfall in December: 234mm
The month with the highest snowfall is December (234mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Siikainen, Finland
- Average snowfall days in December: 20.3 days
The month with the highest number of snowfall days is January (20.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Siikainen, Finland
- Average daylight in December: 5h and 2min
The month with the longest days is June (Average daylight: 19h and 30min).
The month with the shortest days is December (Average daylight: 5h and 24min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The months with the least sunshine are January and December (Average sunshine: 1h and 48min).
Average sunshine days in December
Siikainen, Finland
- Average sunshine days in December: 7.5 days
The month with the most sunshine days is May (14.4 days).
The month with the least sunshine days is February (7.1 days).
Average UV index in December
Siikainen, 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
Siikainen, Finland
- Average cloud cover in December: 74
The month with the most cloud cover is January (Cloud cover 76).
The months with the least cloud cover are June and July (Cloud cover 44).
Average visibility in December
Siikainen, 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 and February (6km).
