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
The beginning of December brings a minor change in the average high-temperature, shifting from a wintry 4.5°C (40.1°F) in November to a still icy 0.8°C (33.4°F). Kirkkonummi records a consistent average nighttime temperature of -1.9°C (28.6°F) in December, slightly lower than the daytime high.Humidity
In Kirkkonummi, the average relative humidity in December is 88%.Rainfall
In Kirkkonummi, in December, during 13 rainfall days, 50mm (1.97") of precipitation is typically accumulated. In Kirkkonummi, during the entire year, the rain falls for 154.9 days and collects up to 500mm (19.69") of precipitation.Snowfall
January through May, October through December are months with snowfall. In Kirkkonummi, in December, snow falls for 16 days, with typically accumulated 133mm (5.24") of snow. In Kirkkonummi, during the entire year, snow falls for 83.6 days and aggregates up to 675mm (26.57") of snow.Daylight
December has the shortest days of the year, with an average of 6h and 0min of daylight.On the first day of December, sunrise is at 08:58 and sunset at 15:23. On the last day of the month, sunrise is at 09:25 and sunset at 15:25 EET.
Sunshine
With an average of 1.7h of sunshine, December has the least sunshine of the year.UV index
January through March and December, with an average maximum UV index of 1, are months with the lowest UV index in Kirkkonummi. A UV Index reading of 2, and below, represents a low threat to health from unprotected exposure to Sun's UV rays for the ordinary person.Note: The average daily UV index of 1 in December transforms into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. 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?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Kirkkonummi have in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What are the months with the lowest UV index?
How high is the UV index in December?
Average temperature in December
Kirkkonummi, Finland
- Average high temperature in December: 0.8°C
The warmest month (with the highest average high temperature) is July (20.3°C).
The month with the lowest average high temperature is January (-2.1°C).
- Average low temperature in December: -1.9°C
The month with the highest average low temperature is July (14.3°C).
The coldest month (with the lowest average low temperature) is January (-5.7°C).
Average pressure in December
Kirkkonummi, Finland
- Average pressure in December: 1008.5mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in December
Kirkkonummi, Finland
- Average wind speed in December: 20.1km/h
The windiest month (with the highest average wind speed) is December (20.1km/h).
The calmest month (with the lowest average wind speed) is May (13.2km/h).
Average humidity in December
Kirkkonummi, Finland
- Average humidity in December: 88%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (72%).
Average rainfall in December
Kirkkonummi, Finland
- Average rainfall in December: 50mm
The wettest months (with the highest rainfall) are July and October (52mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in December
Kirkkonummi, Finland
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is July (16.8 days).
The month with the least rainy days is February (6.8 days).
Average snowfall in December
Kirkkonummi, Finland
- Average snowfall in December: 133mm
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
Kirkkonummi, Finland
- Average snowfall days in December: 16 days
The month with the highest number of snowfall days is January (19 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Kirkkonummi, 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: 1h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 24min).
The month with the least sunshine is December (Average sunshine: 1h and 42min).
Average sunshine days in December
Kirkkonummi, Finland
- Average sunshine days in December: 5.6 days
The month with the most sunshine days is May (16.5 days).
The month with the least sunshine days is December (5.6 days).
Average UV index in December
Kirkkonummi, 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 and December (UV index 1).
Average cloud cover in December
Kirkkonummi, Finland
- Average cloud cover in December: 75
The month with the most cloud cover is December (Cloud cover 75).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Kirkkonummi, Finland
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March and December (8km).
