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
A mild drop in Mänttä's average high-temperature is observed in December, transitioning from a cold 1.8°C (35.2°F) in November to a freezing cold -2.1°C (28.2°F). Night temperatures during December stabilize at an average of -5.4°C (22.3°F), closely mirroring the daytime temperatures.Humidity
The average relative humidity in December is 93%.Rainfall
In Mänttä, during December, the rain falls for 7 days and regularly aggregates up to 39mm (1.54") of precipitation. Throughout the year, there are 119.7 rainfall days, and 379mm (14.92") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, September through December. The month with the most snowfall is December, when snow falls for 20.3 days and typically aggregates up to 221mm (8.7") of snow.Daylight
With an average of 5h and 18min of daylight, December has the shortest days of the year in Mänttä.On the first day of the month, sunrise is at 09:15 and sunset at 15:05. On the last day of December, in Mänttä, Finland, sunrise is at 09:44 and sunset at 15:04 EET.
Sunshine
The month with the least sunshine in Mänttä is December, with an average of 1h of sunshine.UV index
The months with the lowest UV index in Mänttä, Finland, 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 low threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 1 in December interprets into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Mänttä?
What is the average humidity in December in Mänttä?
How much does it rain in Mänttä in December?
What is the snowiest month in Mänttä?
How many days does it snow in December in Mänttä?
What is the month with the shortest days in Mänttä?
What is the average length of the day in December in Mänttä?
What time are sunrise and sunset in December in Mänttä?
What is the month with the least sunshine in Mänttä?
How many hours of sunshine does Mänttä have in December?
What are the months with the lowest UV index in Mänttä?
How high is the UV index in December in Mänttä?
Average temperature in December
Mänttä, Finland
- Average high temperature in December: -2.1°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (-4.9°C).
- Average low temperature in December: -5.4°C
The month with the highest average low temperature is July (12.1°C).
The coldest month (with the lowest average low temperature) is January (-9.2°C).
Average pressure in December
Mänttä, Finland
- Average pressure in December: 1007.7mbar
The month with the highest atmospheric pressure is May (1014.6mbar).
The month with the lowest atmospheric pressure is December (1007.7mbar).
Average wind speed in December
Mänttä, Finland
- Average wind speed in December: 12.3km/h
The windiest month (with the highest average wind speed) is December (12.3km/h).
The calmest month (with the lowest average wind speed) is July (9.6km/h).
Average humidity in December
Mänttä, Finland
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in December
Mänttä, Finland
- Average rainfall in December: 39mm
The wettest month (with the highest rainfall) is October (41mm).
The driest months (with the least rainfall) are March and April (25mm).
Average rainfall days in December
Mänttä, Finland
- Average rainfall days in December: 7 days
The month with the highest number of rainy days is July (15 days).
The month with the least rainy days is February (2.9 days).
Average snowfall in December
Mänttä, Finland
- Average snowfall in December: 221mm
The month with the highest snowfall is December (221mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Mänttä, Finland
- Average snowfall days in December: 20.3 days
The month with the highest number of snowfall days is January (21.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Mänttä, Finland
- Average daylight in December: 5h and 2min
The month with the longest days is June (Average daylight: 19h and 36min).
The month with the shortest days is December (Average daylight: 5h and 18min).
- Average sunshine in December: 1h and 0min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 0min).
Average sunshine days in December
Mänttä, Finland
- Average sunshine days in December: 8.4 days
The month with the most sunshine days is June (17.4 days).
The month with the least sunshine days is December (8.4 days).
Average UV index in December
Mänttä, 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
Mänttä, Finland
- Average cloud cover in December: 79
The month with the most cloud cover is January (Cloud cover 81).
The months with the least cloud cover are July and August (Cloud cover 44).
Average visibility in December
Mänttä, Finland
- Average visibility in December: 6km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (5km).
