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 minor decrease in the average high-temperature is observed during December, shifting from a chilly 6°C (42.8°F) in November to a cold 2.8°C (37°F). Tvärminne's nighttime temperatures in December reveal a minimal variation from the daytime highs, averaging at 0.6°C (33.1°F).Humidity
In December, the average relative humidity is 84%.Rainfall
In Tvärminne, in December, during 13.1 rainfall days, 36mm (1.42") of precipitation is typically accumulated. In Tvärminne, during the entire year, the rain falls for 146.1 days and collects up to 353mm (13.9") of precipitation.Snowfall
January through May, October through December are months with snowfall. The month with the most snowfall in Tvärminne is December, when snow falls for 9.6 days and typically aggregates up to 48mm (1.89") of snow.Daylight
December has the shortest days of the year, with an average of 6h and 6min of daylight.On the first day of December in Tvärminne, sunrise is at 09:01 and sunset at 15:31. On the last day of the month, sunrise is at 09:27 and sunset at 15:32 EET.
Sunshine
The month with the least sunshine is December, with an average of 1.8h of sunshine.UV index
January through March and December, with an average maximum UV index of 1, are months with the lowest UV index in Tvärminne. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The UV index of 1 in December translates into these instructions:
Children necessitate constant protection from sunlight, unlike the majority, who can remain under the sun for about an hour without burning. Direct Sun exposure should be minimized especially during midday when radiation is most intense. In the presence of strong sunlight, it's crucial to wear sunglasses that ward off UVA and UVB rays. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Tvärminne?
What is the average humidity in December in Tvärminne?
How much does it rain in Tvärminne in December?
What is the snowiest month in Tvärminne?
How much does it snow in Tvärminne in December?
What is the month with the shortest days in Tvärminne?
How many hours of daylight does Tvärminne have in December?
What time are sunrise and sunset in December in Tvärminne?
What is the month with the least sunshine in Tvärminne?
How many hours of sunshine does Tvärminne have in December?
What is the month with the lowest UV index in Tvärminne?
How high is the UV index in December in Tvärminne?
Average temperature in December
Tvärminne, Finland
- Average high temperature in December: 2.8°C
The warmest month (with the highest average high temperature) is August (18.3°C).
The month with the lowest average high temperature is February (-0.4°C).
- Average low temperature in December: 0.6°C
The month with the highest average low temperature is August (15.9°C).
The coldest month (with the lowest average low temperature) is February (-3.2°C).
Average pressure in December
Tvärminne, Finland
- Average pressure in December: 1008.2mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1008.2mbar).
Average wind speed in December
Tvärminne, Finland
- Average wind speed in December: 31.4km/h
The windiest month (with the highest average wind speed) is December (31.4km/h).
The calmest month (with the lowest average wind speed) is May (18.8km/h).
Average humidity in December
Tvärminne, Finland
- Average humidity in December: 84%
The month with the highest relative humidity is February (87%).
The month with the lowest relative humidity is August (76%).
Average rainfall in December
Tvärminne, Finland
- Average rainfall in December: 36mm
The wettest month (with the highest rainfall) is August (46mm).
The driest month (with the least rainfall) is April (13mm).
Average rainfall days in December
Tvärminne, Finland
- Average rainfall days in December: 13.1 days
The month with the highest number of rainy days is August (16.7 days).
The month with the least rainy days is February (6.5 days).
Average snowfall in December
Tvärminne, Finland
- Average snowfall in December: 48mm
The month with the highest snowfall is December (48mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Tvärminne, Finland
- Average snowfall days in December: 9.6 days
The month with the highest number of snowfall days is January (12 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Tvärminne, Finland
- Average daylight in December: 6h and 1min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 6min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is July (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in December
Tvärminne, Finland
- Average sunshine days in December: 7.2 days
The month with the most sunshine days is May (18.1 days).
The month with the least sunshine days is December (7.2 days).
Average UV index in December
Tvärminne, Finland
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, March and December (UV index 1).
Average cloud cover in December
Tvärminne, Finland
- Average cloud cover in December: 74
The month with the most cloud cover is December (Cloud cover 74).
The month with the least cloud cover is July (Cloud cover 33).
Average visibility in December
Tvärminne, Finland
- Average visibility in December: 9km
The months with the highest visibility are May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, April, November and December (9km).
