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 arrival of December suggests a slight decrease in the average high-temperature, moving from -0.6°C (30.9°F) in November to a still freezing cold -4.6°C (23.7°F). Throughout December, a minimal difference from peak daytime temperatures is noted, marking a steady low-temperature average of -8.5°C (16.7°F).Humidity
January, February and December, with an average relative humidity of 96%, are the most humid months.Rainfall
In Jonku, during December, the rain falls for 4.9 days and regularly aggregates up to 42mm (1.65") of precipitation. In Jonku, during the entire year, the rain falls for 134 days and collects up to 527mm (20.75") of precipitation.Snowfall
Months with snowfall in Jonku are January through June, September through December. In Jonku, in December, snow falls for 23.5 days, with typically accumulated 277mm (10.91") of snow. In Jonku, during the entire year, snow falls for 133.6 days and aggregates up to 1512mm (59.53") of snow.Daylight
With an average of 3h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 09:46 and sunset at 14:13. On the last day of December, sunrise is at 10:23 and sunset at 14:04 EET.
Sunshine
December has the least sunshine of the year, with an average of 0.7h of sunshine.UV index
January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index in Jonku. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: The UV index of 1 during December translates into the following guidance:
Babies, children, and individuals with sensitive skin should always have protection against extended sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. A hat with a broad brim is indispensable, filtering out up to half of UV rays. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in December?
What are the most humid months?
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?
What is the average length of the day in December?
When are sunrise and sunset in December in Jonku?
What is the month with the least sunshine?
How many hours of sunshine does Jonku have in December?
What are the months with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Jonku, Finland
- Average high temperature in December: -4.6°C
The warmest month (with the highest average high temperature) is July (20.7°C).
The month with the lowest average high temperature is January (-7.7°C).
- Average low temperature in December: -8.5°C
The month with the highest average low temperature is July (11°C).
The coldest month (with the lowest average low temperature) is January (-12.7°C).
Average pressure in December
Jonku, Finland
- Average pressure in December: 1005.7mbar
The month with the highest atmospheric pressure is May (1014.1mbar).
The month with the lowest atmospheric pressure is December (1005.7mbar).
Average wind speed in December
Jonku, Finland
- Average wind speed in December: 11.6km/h
The windiest month (with the highest average wind speed) is February (11.7km/h).
The calmest month (with the lowest average wind speed) is July (9.5km/h).
Average humidity in December
Jonku, Finland
- Average humidity in December: 96%
The months with the highest relative humidity are January, February and December (96%).
The month with the lowest relative humidity is June (69%).
Average rainfall in December
Jonku, Finland
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is July (66mm).
The driest month (with the least rainfall) is April (29mm).
Average rainfall days in December
Jonku, Finland
- Average rainfall days in December: 4.9 days
The month with the highest number of rainy days is August (18.6 days).
The month with the least rainy days is February (2.6 days).
Average snowfall in December
Jonku, Finland
- Average snowfall in December: 277mm
The month with the highest snowfall is March (284mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Jonku, Finland
- Average snowfall days in December: 23.5 days
The month with the highest number of snowfall days is December (23.5 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Jonku, Finland
- Average daylight in December: 3h and 4min
The month with the longest days is June (Average daylight: 22h and 0min).
The month with the shortest days is December (Average daylight: 3h and 42min).
- Average sunshine in December: 0h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in December
Jonku, Finland
- Average sunshine days in December: 7.3 days
The month with the most sunshine days is October (12 days).
The month with the least sunshine days is April (6.8 days).
Average UV index in December
Jonku, 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, October, November and December (UV index 1).
Average cloud cover in December
Jonku, Finland
- Average cloud cover in December: 81
The months with the most cloud cover are January and December (Cloud cover 81).
The month with the least cloud cover is July (Cloud cover 47).
Average visibility in December
Jonku, Finland
- Average visibility in December: 5km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January, February, March, April and December (5km).
