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 drops from an icy 3.4°C (38.1°F) in November to a subzero cold -0.4°C (31.3°F). Sammatti's average low temperature, barely cooler than the daytime high, steadies at -3.7°C (25.3°F) during December.Humidity
In Sammatti, the average relative humidity in December is 91%.Rainfall
In December, the rain falls for 8.5 days. Throughout December, 26mm (1.02") of precipitation is accumulated. In Sammatti, Finland, during the entire year, the rain falls for 122 days and collects up to 276mm (10.87") of precipitation.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 15.3 days and accumulates 91mm (3.58") of snow.Daylight
With an average of 5h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 09:03 and sunset at 15:24. On the last day of December, sunrise is at 09:29 and sunset at 15:25 EET.
Sunshine
December has the least sunshine of the year, with an average of 1.8h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: In December, an average UV index of 1 transforms into the following instructions:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Be careful! The Sun's UV radiation can nearly be doubled by the reflective quality of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December?
What is the average humidity in December?
How much does it rain in December?
What is the snowiest month?
How much does it snow in Sammatti in December?
What is the month with the shortest days?
How many hours of daylight does Sammatti have in December?
When are sunrise and sunset in December?
What is the month with the least sunshine?
How many hours of sunshine does Sammatti have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Sammatti, Finland
- Average high temperature in December: -0.4°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (-3.2°C).
- Average low temperature in December: -3.7°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in December
Sammatti, Finland
- Average pressure in December: 1008.1mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in December
Sammatti, Finland
- Average wind speed in December: 15.2km/h
The windiest month (with the highest average wind speed) is December (15.2km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in December
Sammatti, Finland
- Average humidity in December: 91%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (70%).
Average rainfall in December
Sammatti, Finland
- Average rainfall in December: 26mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in December
Sammatti, Finland
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Sammatti, Finland
- Average snowfall in December: 91mm
The month with the highest snowfall is December (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Sammatti, Finland
- Average snowfall days in December: 15.3 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Sammatti, Finland
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 18h and 48min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in December
Sammatti, Finland
- Average sunshine days in December: 10.4 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is December (10.4 days).
Average UV index in December
Sammatti, Finland
- Average UV index in December: 1
The months with the highest UV index are June and 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
Sammatti, Finland
- Average cloud cover in December: 74
The months with the most cloud cover are February and December (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Sammatti, Finland
- Average visibility in December: 8km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January, February and March (7km).
