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
The onset of December brings a small shift in high-temperatures, falling from a wintry 2.9°C (37.2°F) in November to a freezing cold -0.8°C (30.6°F). Kalajoki's nighttime average temperature in December drops marginally from the daytime highs, settling at a still subzero cold -3.5°C (25.7°F).Humidity
The average relative humidity in December in Kalajoki is 89%.Rainfall
In December, in Kalajoki, the rain falls for 6.2 days. Throughout December, 22mm (0.87") of precipitation is accumulated. In Kalajoki, during the entire year, the rain falls for 119.3 days and collects up to 288mm (11.34") of precipitation.Snowfall
Months with snowfall are January through May, October through December. The months with the most snowfall are February and December, with an average 85mm (3.35") of accumulated snow.Sea temperature
In Kalajoki, the average seawater temperature in December is 2.6°C (36.7°F).Note: For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.
Daylight
The month with the shortest days in Kalajoki is December, with an average of 4h and 18min of daylight.On the first day of the month, sunrise is at 09:44 and sunset at 14:42. On the last day of December, in Kalajoki, sunrise is at 10:17 and sunset at 14:36 EET.
Sunshine
The month with the least sunshine in Kalajoki is December, with an average of 1.2h of sunshine.UV index
The months with the lowest UV index in Kalajoki are January, February, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: An average maximum UV index of 1 in December leads to these recommendations:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Your best bet for sun defense on the face, eyes, and neck is a hat with a wide brim. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Kalajoki?
What is the average humidity in December in Kalajoki?
How many days does it rain in December in Kalajoki?
When does it snow the most in Kalajoki?
How much does it snow in Kalajoki in December?
What is the sea temperature in December in Kalajoki?
What is the month with the shortest days in Kalajoki?
What is the average length of the day in December in Kalajoki?
What time are sunrise and sunset in December in Kalajoki?
What is the month with the least sunshine in Kalajoki?
How long on average sun shines in December in Kalajoki?
What are the months with the lowest UV index in Kalajoki?
What is the UV index reading in December in Kalajoki?
Average temperature in December
Kalajoki, Finland
- Average high temperature in December: -0.8°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The month with the lowest average high temperature is January (-3.8°C).
- Average low temperature in December: -3.5°C
The month with the highest average low temperature is July (12.9°C).
The coldest months (with the lowest average low temperature) are January and February (-7.3°C).
Average pressure in December
Kalajoki, Finland
- Average pressure in December: 1005.5mbar
The month with the highest atmospheric pressure is May (1014.2mbar).
The month with the lowest atmospheric pressure is December (1005.5mbar).
Average wind speed in December
Kalajoki, Finland
- Average wind speed in December: 19.2km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest month (with the lowest average wind speed) is July (13.2km/h).
Average humidity in December
Kalajoki, Finland
- Average humidity in December: 89%
The month with the highest relative humidity is February (92%).
The month with the lowest relative humidity is June (72%).
Average rainfall in December
Kalajoki, Finland
- Average rainfall in December: 22mm
The wettest month (with the highest rainfall) is August (39mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in December
Kalajoki, Finland
- Average rainfall days in December: 6.2 days
The month with the highest number of rainy days is August (16.2 days).
The month with the least rainy days is February (3.6 days).
Average snowfall in December
Kalajoki, Finland
- Average snowfall in December: 85mm
The months with the highest snowfall are February and December (85mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Kalajoki, Finland
- Average snowfall days in December: 16 days
The month with the highest number of snowfall days is January (16.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Kalajoki, Finland
- Average sea temperature in December: 2.6°C
The best month for swimming (with the highest average sea temperature) is August (16.3°C).
The coldest month (with the lowest average sea temperature) is April (-0.3°C).
Average daylight in December /
Average sunshine in December
Kalajoki, Finland
- Average daylight in December: 4h and 2min
The month with the longest days is June (Average daylight: 21h and 0min).
The month with the shortest days is December (Average daylight: 4h and 18min).
- Average sunshine in December: 1h and 1min
The month with the most sunshine is June (Average sunshine: 12h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average sunshine days in December
Kalajoki, Finland
- Average sunshine days in December: 10.5 days
The month with the most sunshine days is May (17.5 days).
The month with the least sunshine days is December (10.5 days).
Average UV index in December
Kalajoki, 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, November and December (UV index 1).
Average cloud cover in December
Kalajoki, Finland
- Average cloud cover in December: 71
The month with the most cloud cover is January (Cloud cover 73).
The month with the least cloud cover is June (Cloud cover 38).
Average visibility in December
Kalajoki, Finland
- Average visibility in December: 9km
The months with the highest visibility are June, July, August and September (10km).
The months with the lowest visibility are January, February, March and April (8km).
