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
December signifies a minor drop in average high-temperature, transitioning from a cold 4.5°C (40.1°F) in November to a still icy 1.1°C (34°F). Aarlahti records a consistent average nighttime temperature of -2.2°C (28°F) in December, slightly lower than the daytime high.Humidity
In Aarlahti, the average relative humidity in December is 87%.Rainfall
In December, in Aarlahti, the rain falls for 11.1 days. Throughout December, 41mm (1.61") of precipitation is accumulated. In Aarlahti, during the entire year, the rain falls for 134.6 days and collects up to 394mm (15.51") of precipitation.Snowfall
Months with snowfall in Aarlahti, Finland, are January through May, October through December. In Aarlahti, in December, during 12.4 snowfall days, 82mm (3.23") of snow is typically accumulated. In Aarlahti, during the entire year, snow falls for 60.5 days and aggregates up to 454mm (17.87") of snow.Daylight
The month with the shortest days is December, with an average of 5h and 48min of daylight.On the first day of the month, sunrise is at 09:13 and sunset at 15:29. On the last day of December, in Aarlahti, sunrise is at 09:41 and sunset at 15:30 EET.
Sunshine
December has the least sunshine of the year, with an average of 1.9h of sunshine.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Aarlahti, Finland. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: The daily high UV index of 1 during December translates into the following recommendations:
While most individuals can withstand prolonged sun exposure, it is imperative that babies, children, and those with sensitive skin always be shielded. It's recommended to limit sun exposure when its radiation is at its peak during midday. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Remember! The Sun's UV radiation can be magnified almost twofold by the reflection of snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is it in Aarlahti in December?
What is the average humidity in December in Aarlahti?
How much does it rain in Aarlahti in December?
How much does it snow in Aarlahti in December?
What is the month with the shortest days in Aarlahti?
What is the average length of the day in December in Aarlahti?
What time are sunrise and sunset in December in Aarlahti?
What is the month with the least sunshine in Aarlahti?
How many hours of sunshine does Aarlahti have in December?
What are the months with the lowest UV index in Aarlahti?
What is the UV index reading in December in Aarlahti?
Average temperature in December
Aarlahti, Finland
- Average high temperature in December: 1.1°C
The warmest month (with the highest average high temperature) is July (20.4°C).
The month with the lowest average high temperature is January (-1.9°C).
- Average low temperature in December: -2.2°C
The months with the highest average low temperature are July and August (13.8°C).
The coldest month (with the lowest average low temperature) is February (-5.6°C).
Average pressure in December
Aarlahti, Finland
- Average pressure in December: 1007.6mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1007.6mbar).
Average wind speed in December
Aarlahti, Finland
- Average wind speed in December: 20.4km/h
The windiest month (with the highest average wind speed) is December (20.4km/h).
The calmest month (with the lowest average wind speed) is July (13.9km/h).
Average humidity in December
Aarlahti, Finland
- Average humidity in December: 87%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Aarlahti, Finland
- Average rainfall in December: 41mm
The wettest month (with the highest rainfall) is July (49mm).
The driest month (with the least rainfall) is April (19mm).
Average rainfall days in December
Aarlahti, Finland
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (15.1 days).
The month with the least rainy days is February (5.2 days).
Average snowfall in December
Aarlahti, Finland
- Average snowfall in December: 82mm
The month with the highest snowfall is January (103mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Aarlahti, Finland
- Average snowfall days in December: 12.4 days
The month with the highest number of snowfall days is January (13.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Aarlahti, Finland
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 19h and 0min).
The month with the shortest days is December (Average daylight: 5h and 48min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is July (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 54min).
Average sunshine days in December
Aarlahti, Finland
- Average sunshine days in December: 9.6 days
The month with the most sunshine days is May (17.2 days).
The month with the least sunshine days is December (9.6 days).
Average UV index in December
Aarlahti, Finland
- Average UV index in December: 1
The months with the highest UV index are June, July and August (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
Aarlahti, Finland
- Average cloud cover in December: 71
The month with the most cloud cover is December (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Aarlahti, Finland
- Average visibility in December: 9km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are February and March (8km).
