December weather forecastPornainen, Finland
December
Weather in December
The first month of the winter, December, is still a cold month in Pornainen, Finland, with an average temperature ranging between min -2.7°C (27.1°F) and max 0.5°C (32.9°F).Temperature
Transition into December subtly marks a drop in the average high-temperature, moderately moving from a cold 3.9°C (39°F) in November to a still icy 0.5°C (32.9°F). Pornainen's nights in December maintain a consistent average of -2.7°C (27.1°F), demonstrating a minimal differential from its daytime temperature.Humidity
The average relative humidity in December is 90%.Rainfall
In Pornainen, 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 rainfall days, and 353mm (13.9") of precipitation is accumulated.Snowfall
Months with snowfall in Pornainen are January through May, October through December. In December, it is snowing for 10.8 days. Throughout December, 66mm (2.6") of snow is accumulated. Throughout the year, in Pornainen, Finland, there are 53.9 snowfall days, and 433mm (17.05") of snow is accumulated.Daylight
With an average of 5h and 54min of daylight, December has the shortest days of the year in Pornainen.On the first day of the month, sunrise is at 08:58 and sunset at 15:17. On the last day of December, in Pornainen, sunrise is at 09:25 and sunset at 15:18 EET.
Sunshine
With an average of 1.9h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Pornainen 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 minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Mind you! Snow reflection can increase the intensity of the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Pornainen, 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
Pornainen, 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
Pornainen, 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
Pornainen, 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
Pornainen, 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
Pornainen, Finland
- Average rainfall days in December: 7.8 days
The months with the highest number of rainy days are July and August (15.5 days).
The month with the least rainy days is February (3 days).
Average snowfall in December
Pornainen, 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
Pornainen, 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
Pornainen, Finland
- Average daylight in December: 5h and 54min
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 54min
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 54min).
Average sunshine days in December
Pornainen, 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
Pornainen, 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
Pornainen, 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
Pornainen, 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).
