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
Weather in December
Temperature
Janakkala's December weather features a light decline in high-temperatures, reducing from an icy 2.3°C (36.1°F) in November to a subzero cold -1.5°C (29.3°F). In Janakkala, December is characterized by an average low-temperature of -4.8°C (23.4°F), indicating a minor drop from daytime highs.Humidity
In December, the average relative humidity in Janakkala is 93%.Rainfall
In Janakkala, Finland, during December, the rain falls for 7.1 days and regularly aggregates up to 34mm (1.34") of precipitation. Throughout the year, there are 128.9 rainfall days, and 399mm (15.71") of precipitation is accumulated.Snowfall
Months with snowfall in Janakkala are January through May, October through December. In Janakkala, in December, during 16.5 snowfall days, 143mm (5.63") of snow is typically accumulated. Throughout the year, in Janakkala, Finland, 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 in Janakkala, Finland.On the first day of the month, sunrise is at 09:05 and sunset at 15:16. On the last day of December, in Janakkala, sunrise is at 09:32 and sunset at 15:16 EET.
Sunshine
With an average of 1.5h of sunshine, December has the least sunshine of the year in Janakkala.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Janakkala, Finland. A UV Index estimate of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: A typical high UV index of 1 in December suggests the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. It's recommended to limit sun exposure when its radiation is at its peak during midday. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
How cold is December in Janakkala?
What is the average humidity in December in Janakkala?
How much does it rain in Janakkala in December?
How much does it snow in Janakkala in December?
What is the month with the shortest days in Janakkala?
What is the average length of the day in December in Janakkala?
When is the sunrise / sunset in December in Janakkala?
What is the month with the least sunshine in Janakkala?
How many hours of sunshine does Janakkala have in December?
When is the lowest UV index in Janakkala?
What is the UV index intensity in December in Janakkala?
Average temperature in December
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, Finland
- Average daylight in December: 5h and 4min
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 3min
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
Janakkala, 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
Janakkala, 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
Janakkala, 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
Janakkala, 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).
Janakkala, Finland
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