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
Weather in December
Temperature
A mild shift in the average high-temperature occurs in December, reducing from 3.9°C (39°F) in November to a still cold 0.5°C (32.9°F). December nights in Järvenpää witness a mild cool down to an average low of -2.7°C (27.1°F).Humidity
The average relative humidity in December in Järvenpää, Finland, is 90%.Rainfall
In Järvenpää, during December, the rain falls for 7.8 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, there are 120.2 rainfall days, and 354mm (13.94") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In December, it is snowing for 10.8 days. Throughout December, 66mm (2.6") of snow is accumulated. Throughout the year, in Järvenpää, Finland, there are 53.9 snowfall days, and 433mm (17.05") of snow is accumulated.Daylight
December has the shortest days of the year in Järvenpää, with an average of 5h and 54min of daylight.On the first day of December, sunrise is at 08:59 and sunset at 15:18. On the last day of the month, sunrise is at 09:26 and sunset at 15:19 EET.
Sunshine
The month with the least sunshine is December, 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 Järvenpää. A UV Index reading of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: The daily high UV index of 1 during December translates into the following recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Frequently asked questions
How cold is it in Järvenpää in December?
What is the average humidity in December in Järvenpää?
How much does it rain in Järvenpää in December?
How much does it snow in Järvenpää in December?
What is the month with the shortest days in Järvenpää?
What is the average length of the day in December in Järvenpää?
When are sunrise and sunset in December in Järvenpää?
What is the month with the least sunshine in Järvenpää?
How many hours of sunshine does Järvenpää have in December?
What is the month with the lowest UV index in Järvenpää?
What is the UV index intensity in December in Järvenpää?
Average temperature in December
Järvenpää, Finland
- Average high temperature in December: 0.5°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 (-2.8°C).
- Average low temperature in December: -2.7°C
The month with the highest average low temperature is July (13.7°C).
The coldest month (with the lowest average low temperature) is January (-6.5°C).
Average pressure in December
Järvenpää, Finland
- Average pressure in December: 1008.6mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in December
Järvenpää, Finland
- Average wind speed in December: 16.9km/h
The windiest month (with the highest average wind speed) is December (16.9km/h).
The calmest month (with the lowest average wind speed) is July (11.8km/h).
Average humidity in December
Järvenpää, Finland
- Average humidity in December: 90%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is May (69%).
Average rainfall in December
Järvenpää, Finland
- Average rainfall in December: 26mm
The wettest month (with the highest rainfall) is October (48mm).
The driest month (with the least rainfall) is May (15mm).
Average rainfall days in December
Järvenpää, Finland
- Average rainfall days in December: 7.8 days
The months with the highest number of rainy days are July, August and September (15.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Järvenpää, Finland
- Average snowfall in December: 66mm
The month with the highest snowfall is January (94mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Järvenpää, Finland
- Average snowfall days in December: 10.8 days
The month with the highest number of snowfall days is January (11 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Järvenpää, Finland
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in December: 1h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in December
Järvenpää, Finland
- Average sunshine days in December: 14.3 days
The month with the most sunshine days is May (21.9 days).
The month with the least sunshine days is November (11.1 days).
Average UV index in December
Järvenpää, 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
Järvenpää, Finland
- Average cloud cover in December: 75
The months with the most cloud cover are February and December (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 37).
Average visibility in December
Järvenpää, Finland
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are February and March (7km).
Järvenpää, Finland
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