December weather forecastJomala, Finland
December
Weather in December
December, the first month of the winter in Jomala, is also an icy month, with an average temperature fluctuating between 1.3°C (34.3°F) and 3.5°C (38.3°F).Temperature
As Jomala welcomes December, the average high-temperature is noted at a cold 3.5°C (38.3°F), closely aligning with the preceding month. Jomala, during the December nights, maintains an average temperature of 1.3°C (34.3°F), closely aligned with its daytime readings.Humidity
In December, the average relative humidity in Jomala is 81%.Rainfall
In Jomala, in December, it is raining for 8.8 days, with typically 27mm (1.06") of accumulated precipitation. In Jomala, during the entire year, the rain falls for 116.3 days and collects up to 274mm (10.79") of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 7.5 days. Throughout December, 35mm (1.38") of snow is accumulated. In Jomala, Finland, during the entire year, snow falls for 40.1 days and aggregates up to 160mm (6.3") of snow.Daylight
With an average of 6h and 0min of daylight, December has the shortest days of the year in Jomala.On the first day of December in Jomala, sunrise is at 09:17 and sunset at 15:41. On the last day of the month, sunrise is at 09:43 and sunset at 15:42 EET.
Sunshine
January and December, with an average of 2.2h of sunshine, are months with the least sunshine in Jomala, Finland.UV index
In Jomala, the average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for ordinary individuals.Note: A daily maximum UV index of 2 in December translates into the following instructions:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Being exposed to the midday Sun can have harmful effects due to strong UV radiation; always take precautions. Protect your eyes, ears, face, and neck from the Sun by wearing a wide-brimmed hat. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Jomala, Finland
- Average high temperature in December: 3.5°C
The warmest month (with the highest average high temperature) is August (17.6°C).
The month with the lowest average high temperature is February (0.5°C).
- Average low temperature in December: 1.3°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 (-1.5°C).
Average pressure in December
Jomala, Finland
- Average pressure in December: 1007.4mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.4mbar).
Average wind speed in December
Jomala, Finland
- Average wind speed in December: 31.7km/h
The windiest month (with the highest average wind speed) is December (31.7km/h).
The calmest month (with the lowest average wind speed) is July (20km/h).
Average humidity in December
Jomala, Finland
- Average humidity in December: 81%
The month with the highest relative humidity is February (84%).
The months with the lowest relative humidity are August and October (78%).
Average rainfall in December
Jomala, Finland
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is October (32mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in December
Jomala, Finland
- Average rainfall days in December: 8.8 days
The month with the highest number of rainy days is August (14.2 days).
The month with the least rainy days is February (3.8 days).
Average snowfall in December
Jomala, Finland
- Average snowfall in December: 35mm
The month with the highest snowfall is January (44mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Jomala, Finland
- Average snowfall days in December: 7.5 days
The month with the highest number of snowfall days is January (10.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Jomala, 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: 2h and 12min
The month with the most sunshine is July (Average sunshine: 12h and 0min).
The months with the least sunshine are January and December (Average sunshine: 2h and 12min).
Average sunshine days in December
Jomala, Finland
- Average sunshine days in December: 11.1 days
The month with the most sunshine days is May (20.5 days).
The month with the least sunshine days is December (11.1 days).
Average UV index in December
Jomala, Finland
- Average UV index in December: 2
The month with the highest UV index is July (UV index 5).
The months with the lowest UV index are January, February and March (UV index 1).
Average cloud cover in December
Jomala, Finland
- Average cloud cover in December: 69
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 35).
Average visibility in December
Jomala, Finland
- Average visibility in December: 9km
The months with the highest visibility are April, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, November and December (9km).
