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 sea temperature 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
December signifies a gentle decline in Keminmaa's average high-temperature, easing from a wintry 1.3°C (34.3°F) in November to a freezing cold -2.6°C (27.3°F). Keminmaa's average nighttime temperature in December modestly descends to a still subzero cold -6°C (21.2°F).Humidity
In December, the average relative humidity is 91%.Rainfall
In Keminmaa, in December, it is raining for 6.2 days, with typically 47mm (1.85") of accumulated precipitation. Throughout the year, in Keminmaa, there are 127 rainfall days, and 472mm (18.58") of precipitation is accumulated.Snowfall
Months with snowfall are January through June, October through December. In Keminmaa, during December, snow falls for 18 days and regularly aggregates up to 196mm (7.72") of snow. In Keminmaa, Finland, during the entire year, snow falls for 98.7 days and aggregates up to 1035mm (40.75") of snow.Sea temperature
In December, the average sea temperature in Keminmaa is 1.9°C (35.4°F).Note: In the water-based sport of swimming, this state is life-threatening and exceedingly dangerous. The freezing water causes severe discomfort, leading to rapid hyperventilation. A specialized swimsuit is compulsory to avert thermal damage.
Daylight
With an average of 3h and 18min of daylight, December has the shortest days of the year.On the first day of December in Keminmaa, sunrise is at 10:06 and sunset at 14:15. On the last day of the month, sunrise is at 10:45 and sunset at 14:04 EET.
Sunshine
The month with the least sunshine is December, with an average of 1.1h of sunshine.UV index
January, March, October and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the ordinary person.Note: The maximum daily UV index of 1 during December translates into the following directions:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. During bright days, sunglasses that offer UVA and UVB defense are recommended. Forewarned is forearmed! The Sun's UV radiation can be almost doubled in intensity by snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Keminmaa?
What is the average humidity in December in Keminmaa?
How much does it rain in Keminmaa in December?
How much does it snow in Keminmaa in December?
What is the sea temperature in December in Keminmaa?
What is the month with the shortest days in Keminmaa?
How many hours of daylight does Keminmaa have in December?
When is the sunrise / sunset in December in Keminmaa?
What is the month with the least sunshine in Keminmaa?
How long on average sun shines in December in Keminmaa?
What are the months with the lowest UV index in Keminmaa?
How high is the UV index in December in Keminmaa?
Average temperature in December
Keminmaa, Finland
- Average high temperature in December: -2.6°C
The warmest month (with the highest average high temperature) is July (17.8°C).
The month with the lowest average high temperature is January (-6.3°C).
- Average low temperature in December: -6°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-10.7°C).
Average pressure in December
Keminmaa, Finland
- Average pressure in December: 1004.9mbar
The month with the highest atmospheric pressure is May (1013.9mbar).
The month with the lowest atmospheric pressure is December (1004.9mbar).
Average wind speed in December
Keminmaa, Finland
- Average wind speed in December: 17.2km/h
The windiest month (with the highest average wind speed) is November (17.7km/h).
The calmest month (with the lowest average wind speed) is April (12.4km/h).
Average humidity in December
Keminmaa, Finland
- Average humidity in December: 91%
The months with the highest relative humidity are January and February (94%).
The month with the lowest relative humidity is June (71%).
Average rainfall in December
Keminmaa, Finland
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (28mm).
Average rainfall days in December
Keminmaa, Finland
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is July (16 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Keminmaa, Finland
- Average snowfall in December: 196mm
The month with the highest snowfall is March (228mm).
The months with the least snowfall are July, August and September (0mm).
Average snowfall days in December
Keminmaa, Finland
- Average snowfall days in December: 18 days
The month with the highest number of snowfall days is January (18.8 days).
The months with the least snowfall days are July, August and September (0 days).
Average sea temperature in December
Keminmaa, Finland
- Average sea temperature in December: 1.9°C
The best month for swimming (with the highest average sea temperature) is July (16.8°C).
The coldest months (with the lowest average sea temperature) are January and February (-0.7°C).
Average daylight in December /
Average sunshine in December
Keminmaa, Finland
- Average daylight in December: 3h and 2min
The month with the longest days is July (Average daylight: 20h and 42min).
The month with the shortest days is December (Average daylight: 3h and 18min).
- Average sunshine in December: 1h and 1min
The month with the most sunshine is July (Average sunshine: 12h and 18min).
The month with the least sunshine is December (Average sunshine: 1h and 6min).
Average sunshine days in December
Keminmaa, Finland
- Average sunshine days in December: 9.9 days
The month with the most sunshine days is October (13.9 days).
The month with the least sunshine days is December (9.9 days).
Average UV index in December
Keminmaa, 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, March, October and December (UV index 1).
Average cloud cover in December
Keminmaa, Finland
- Average cloud cover in December: 72
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is July (Cloud cover 40).
Average visibility in December
Keminmaa, Finland
- Average visibility in December: 8km
The months with the highest visibility are June, July and August (10km).
The months with the lowest visibility are January, February, March and April (7km).
