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 shift in the average high-temperature occurs in December, reducing from 4.5°C (40.1°F) in November to a still cold 0.8°C (33.4°F). Länsimäki's average low temperature, barely cooler than the daytime high, steadies at a subzero cold -1.8°C (28.8°F) during December.Humidity
In Länsimäki, Finland, the average relative humidity in December is 88%.Rainfall
In Länsimäki, during December, the rain falls for 12.1 days and regularly aggregates up to 47mm (1.85") of precipitation. Throughout the year, there are 144.4 rainfall days, and 463mm (18.23") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In Länsimäki, in December, during 15.5 snowfall days, 129mm (5.08") of snow is typically accumulated. Throughout the year, in Länsimäki, Finland, there are 84.6 snowfall days, and 688mm (27.09") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 6h and 0min of daylight.On the first day of the month, sunrise is at 08:57 and sunset at 15:20. On the last day of December, sunrise is at 09:24 and sunset at 15:21 EET.
Sunshine
With an average of 1.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Länsimäki 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 radiation for ordinary individuals.Note: A maximum daily UV index of 1 during December morphs into the following directions:
Infants, children, and people with sensitive skin should always have protection against lengthy periods of sun exposure. To protect against the Sun's most potent rays, avoid direct exposure around midday. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Länsimäki in December?
What is the average humidity in December in Länsimäki?
How many days does it rain in December in Länsimäki?
How much does it snow in Länsimäki in December?
What is the month with the shortest days in Länsimäki?
How many hours of daylight does Länsimäki have in December?
When is the sunrise / sunset in December in Länsimäki?
What is the month with the least sunshine in Länsimäki?
How long on average sun shines in December in Länsimäki?
What are the months with the lowest UV index in Länsimäki?
How high is the UV index in December in Länsimäki?
Average temperature in December
Länsimäki, Finland
- Average high temperature in December: 0.8°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-2.2°C).
- Average low temperature in December: -1.8°C
The month with the highest average low temperature is July (14.5°C).
The coldest months (with the lowest average low temperature) are January and February (-5.5°C).
Average pressure in December
Länsimäki, 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
Länsimäki, Finland
- Average wind speed in December: 21.1km/h
The windiest month (with the highest average wind speed) is December (21.1km/h).
The calmest month (with the lowest average wind speed) is May (13.7km/h).
Average humidity in December
Länsimäki, Finland
- Average humidity in December: 88%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Länsimäki, Finland
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Länsimäki, Finland
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in December
Länsimäki, Finland
- Average snowfall in December: 129mm
The month with the highest snowfall is January (159mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Länsimäki, Finland
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Länsimäki, Finland
- Average daylight in December: 6h and 0min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in December
Länsimäki, Finland
- Average sunshine days in December: 5.6 days
The month with the most sunshine days is May (17 days).
The month with the least sunshine days is December (5.6 days).
Average UV index in December
Länsimäki, 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
Länsimäki, Finland
- Average cloud cover in December: 75
The month with the most cloud cover is December (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Länsimäki, Finland
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).
