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
Weather in December
Temperature
A subtle shift in Otaniemi's weather is observed as November turns into December, with the average high temperature reducing from a cold 4.5°C (40.1°F) to a still icy 0.8°C (33.4°F). Nights in December in Otaniemi showcase an average temperature of -1.8°C (28.8°F), slightly cooler than the daytime.Humidity
In Otaniemi, the average relative humidity in December is 88%.Rainfall
In December, the rain falls for 12.1 days. Throughout December, 47mm (1.85") of precipitation is accumulated. Throughout the year, there are 144.4 rainfall days, and 463mm (18.23") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Otaniemi. In Otaniemi, during December, snow falls for 15.5 days and regularly aggregates up to 129mm (5.08") of snow. Throughout the year, in Otaniemi, there are 84.6 snowfall days, and 688mm (27.09") of snow is accumulated.Sea temperature
In Otaniemi, the average seawater temperature in December is 4°C (39.2°F).Note: In swimming scenarios, this is an immediate danger to life. Breathing becomes uncontrollable instantly, obstructing any form of clear thinking. A specialized swimsuit is indispensable to lessen thermal leakage.
Daylight
December has the shortest days of the year, with an average of 6h and 0min of daylight.On the first day of December in Otaniemi, sunrise is at 08:57 and sunset at 15:21. On the last day of the month, sunrise is at 09:24 and sunset at 15:23 EET.
Sunshine
With an average of 1.8h of sunshine, December has the least sunshine of the year.UV index
January through March, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low threat to health from unsafe exposure to UV radiation for average individuals.Note: The maximum UV index of 1 during December leads to these instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Frequently asked questions
How cold is December in Otaniemi?
What is the average humidity in December in Otaniemi?
How much does it rain in Otaniemi in December?
How much does it snow in Otaniemi in December?
How cold is the water in December in Otaniemi?
What is the month with the shortest days in Otaniemi?
How many hours of daylight does Otaniemi have in December?
When are sunrise and sunset in December in Otaniemi?
What is the month with the least sunshine in Otaniemi?
How many hours of sunshine does Otaniemi have in December?
What is the month with the lowest UV index in Otaniemi?
How high is the UV index in December in Otaniemi?
Average temperature in December
Otaniemi, Finland
- Average high temperature in December: 0.8°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 (-2.2°C).
- Average low temperature in December: -1.8°C
The month with the highest average low temperature is July (14.5°C).
The coldest months (with the lowest average low temperature) are January and February (-5.5°C).
Average pressure in December
Otaniemi, Finland
- Average pressure in December: 1008.6mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.6mbar).
Average wind speed in December
Otaniemi, Finland
- Average wind speed in December: 21.1km/h
The windiest month (with the highest average wind speed) is December (21.1km/h).
The calmest month (with the lowest average wind speed) is May (13.7km/h).
Average humidity in December
Otaniemi, 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
Otaniemi, Finland
- Average rainfall in December: 47mm
The wettest month (with the highest rainfall) is July (51mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Otaniemi, Finland
- Average rainfall days in December: 12.1 days
The month with the highest number of rainy days is July (16.6 days).
The month with the least rainy days is February (6.4 days).
Average snowfall in December
Otaniemi, Finland
- Average snowfall in December: 129mm
The month with the highest snowfall is January (159mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Otaniemi, Finland
- Average snowfall days in December: 15.5 days
The month with the highest number of snowfall days is January (18.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average sea temperature in December
Otaniemi, Finland
- Average sea temperature in December: 4°C
The best month for swimming (with the highest average sea temperature) is August (18.7°C).
The coldest month (with the lowest average sea temperature) is March (0.1°C).
Average daylight in December /
Average sunshine in December
Otaniemi, 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 5min
The month with the most sunshine is June (Average sunshine: 12h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in December
Otaniemi, Finland
- Average sunshine days in December: 5.6 days
The month with the most sunshine days is May (17 days).
The month with the least sunshine days is December (5.6 days).
Average UV index in December
Otaniemi, 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, November and December (UV index 1).
Average cloud cover in December
Otaniemi, 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
Otaniemi, 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).
Otaniemi, Finland
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