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
In December, the average high-temperature marginally decreases from an icy 2.5°C (36.5°F) in November to a freezing cold -1.2°C (29.8°F). Purmo reports an average low-temperature of -4.1°C (24.6°F) during the subtly cooler December nights.Humidity
In December, the average relative humidity is 90%.Rainfall
In Purmo, Finland, in December, during 8.6 rainfall days, 40mm (1.57") of precipitation is typically accumulated. In Purmo, during the entire year, the rain falls for 128.2 days and collects up to 393mm (15.47") of precipitation.Snowfall
January through May, October through December are months with snowfall. In December, in Purmo, it is snowing for 19.9 days. Throughout December, 177mm (6.97") of snow is accumulated. Throughout the year, there are 99.4 snowfall days, and 905mm (35.63") of snow is accumulated.Daylight
The month with the shortest days in Purmo is December, with an average of 4h and 42min of daylight.On the first day of the month, sunrise is at 09:39 and sunset at 14:55. On the last day of December, sunrise is at 10:10 and sunset at 14:51 EET.
Sunshine
December has the least sunshine of the year, with an average of 1.2h 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 of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A maximum high UV index of 1 in December translates into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Sun's radiation is most powerful around mid-day, so it's best to limit outdoor activities during this time. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What is the average humidity in December?
How many days does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Purmo have in December?
What time are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Purmo have in December?
When is the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Purmo, Finland
- Average high temperature in December: -1.2°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is January (-4.2°C).
- Average low temperature in December: -4.1°C
The month with the highest average low temperature is July (12.6°C).
The coldest months (with the lowest average low temperature) are January and February (-7.6°C).
Average pressure in December
Purmo, Finland
- Average pressure in December: 1005.6mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.6mbar).
Average wind speed in December
Purmo, Finland
- Average wind speed in December: 16.3km/h
The windiest month (with the highest average wind speed) is December (16.3km/h).
The calmest month (with the lowest average wind speed) is July (11.7km/h).
Average humidity in December
Purmo, Finland
- Average humidity in December: 90%
The month with the highest relative humidity is February (93%).
The month with the lowest relative humidity is June (70%).
Average rainfall in December
Purmo, Finland
- Average rainfall in December: 40mm
The wettest month (with the highest rainfall) is July (42mm).
The driest months (with the least rainfall) are April and September (23mm).
Average rainfall days in December
Purmo, Finland
- Average rainfall days in December: 8.6 days
The month with the highest number of rainy days is August (14.7 days).
The month with the least rainy days is February (5.4 days).
Average snowfall in December
Purmo, Finland
- Average snowfall in December: 177mm
The month with the highest snowfall is February (185mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Purmo, Finland
- Average snowfall days in December: 19.9 days
The month with the highest number of snowfall days is January (21 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Purmo, Finland
- Average daylight in December: 4h and 4min
The month with the longest days is June (Average daylight: 20h and 24min).
The month with the shortest days is December (Average daylight: 4h and 42min).
- Average sunshine in December: 1h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average sunshine days in December
Purmo, Finland
- Average sunshine days in December: 6.5 days
The months with the most sunshine days are May and June (17.3 days).
The month with the least sunshine days is December (6.5 days).
Average UV index in December
Purmo, 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
Purmo, Finland
- Average cloud cover in December: 72
The months with the most cloud cover are January and February (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 39).
Average visibility in December
Purmo, Finland
- Average visibility in December: 8km
The month with the highest visibility is June (10km).
The months with the lowest visibility are January, February and March (7km).
