December weather forecastHattula, Finland
December
Weather in December
The first month of the winter, December, is also a subzero cold month in Hattula, Finland, with an average temperature fluctuating between -1.5°C (29.3°F) and -4.8°C (23.4°F).Temperature
The start of December involves a subtle temperature drop, shifting from an icy 2.3°C (36.1°F) in November to a freezing cold -1.5°C (29.3°F). During the month of December, Hattula's average nighttime temperature closely mirrors its daytime counterpart, at -4.8°C (23.4°F).Humidity
The average relative humidity in December in Hattula is 93%.Rainfall
In Hattula, in December, during 7.1 rainfall days, 34mm (1.34") of precipitation is typically accumulated. Throughout the year, there are 128.9 rainfall days, and 399mm (15.71") of precipitation is accumulated.Snowfall
Months with snowfall in Hattula are January through May, October through December. In Hattula, in December, snow falls for 16.5 days, with typically accumulated 143mm (5.63") of snow. Throughout the year, there are 90.6 snowfall days, and 766mm (30.16") of snow is accumulated.Daylight
With an average of 5h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 09:07 and sunset at 15:15. On the last day of December, in Hattula, sunrise is at 09:35 and sunset at 15:16 EET.
Sunshine
With an average of 1.5h of sunshine, December has the least sunshine of the year in Hattula.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 low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 transforms into these recommendations:
Though the majority can handle prolonged sun exposure, it is crucial to always shield babies, children, and those with fair skin. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. 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
Average temperature in December
Hattula, Finland
- Average high temperature in December: -1.5°C
The warmest month (with the highest average high temperature) is July (21.8°C).
The month with the lowest average high temperature is January (-4.4°C).
- Average low temperature in December: -4.8°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 (-8.5°C).
Average pressure in December
Hattula, Finland
- Average pressure in December: 1008mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in December
Hattula, Finland
- Average wind speed in December: 12km/h
The windiest month (with the highest average wind speed) is December (12km/h).
The calmest month (with the lowest average wind speed) is August (9.6km/h).
Average humidity in December
Hattula, Finland
- Average humidity in December: 93%
The month with the highest relative humidity is February (95%).
The month with the lowest relative humidity is May (66%).
Average rainfall in December
Hattula, Finland
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is July (54mm).
The driest months (with the least rainfall) are March and April (25mm).
Average rainfall days in December
Hattula, Finland
- Average rainfall days in December: 7.1 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Hattula, Finland
- Average snowfall in December: 143mm
The month with the highest snowfall is January (157mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Hattula, Finland
- Average snowfall days in December: 16.5 days
The month with the highest number of snowfall days is January (18.6 days).
The months with the least snowfall days are June, July and August (0 days).
Average daylight in December /
Average sunshine in December
Hattula, Finland
- Average daylight in December: 5h and 42min
The month with the longest days is June (Average daylight: 19h and 6min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in December: 1h and 30min
The month with the most sunshine is June (Average sunshine: 11h and 12min).
The month with the least sunshine is December (Average sunshine: 1h and 30min).
Average sunshine days in December
Hattula, Finland
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is May (15.9 days).
The month with the least sunshine days is March (9.4 days).
Average UV index in December
Hattula, 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
Hattula, Finland
- Average cloud cover in December: 78
The months with the most cloud cover are January and February (Cloud cover 80).
The months with the least cloud cover are May, June, July and August (Cloud cover 47).
Average visibility in December
Hattula, Finland
- Average visibility in December: 6km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January and February (5km).
