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 onset of December aligns with a soft reduction in the average high-temperature, gently falling from 3.9°C (39°F) in November to a still wintry 0.5°C (32.9°F). The nighttime temperature in Perttula in December experiences a minor dip, averaging a subzero cold -2.7°C (27.1°F).Humidity
In Perttula, the average relative humidity in December is 90%.Rainfall
In Perttula, during December, the rain falls for 7.8 days and regularly aggregates up to 26mm (1.02") of precipitation. Throughout the year, in Perttula, 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 Perttula, during December, snow falls for 10.8 days and regularly aggregates up to 66mm (2.6") of snow. In Perttula, during the entire year, snow falls for 53.9 days and aggregates up to 433mm (17.05") of snow.Daylight
December has the shortest days of the year in Perttula, with an average of 5h and 54min of daylight.On the first day of December, sunrise is at 09:00 and sunset at 15:20. On the last day of the month, sunrise is at 09:27 and sunset at 15:21 EET.
Sunshine
The month with the least sunshine in Perttula is December, with an average of 1.7h 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 minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: A typical high UV index of 1 in December suggests the following recommendations:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Being in direct Sun during midday can be harmful due to intense solar radiation; take precautions. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Remember this! The UV radiation of the Sun can be nearly doubled by the reflective properties of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Perttula in December?
What is the average humidity in December in Perttula?
How much does it rain in Perttula in December?
How much does it snow in Perttula in December?
What is the month with the shortest days in Perttula?
How many hours of daylight does Perttula have in December?
When is the sunrise / sunset in December in Perttula?
What is the month with the least sunshine in Perttula?
How many hours of sunshine does Perttula have in December?
When is the lowest UV index in Perttula?
What is the UV index reading in December in Perttula?
Average temperature in December
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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
Perttula, 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).
