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 heralds a minor drop in average high-temperature, sliding from November's wintry 1.5°C (34.7°F) to a subzero cold -2.7°C (27.1°F). Syvänsi's nighttime temperatures in December display a slight drop from daytime highs, averaging to -5.7°C (21.7°F).Humidity
The average relative humidity in December is 93%.Rainfall
In December, the rain falls for 5.3 days. Throughout December, 40mm (1.57") of precipitation is accumulated. In Syvänsi, during the entire year, the rain falls for 107.2 days and collects up to 393mm (15.47") of precipitation.Snowfall
Months with snowfall in Syvänsi are January through June, September through December. In December, it is snowing for 21.1 days. Throughout December, 216mm (8.5") of snow is accumulated. In Syvänsi, Finland, during the entire year, snow falls for 110.8 days and aggregates up to 1072mm (42.2") of snow.Daylight
The month with the shortest days in Syvänsi, Finland, is December, with an average of 5h and 12min of daylight.On the first day of the month, sunrise is at 09:07 and sunset at 14:50. On the last day of December, sunrise is at 09:37 and sunset at 14:49 EET.
Sunshine
December has the least sunshine of the year in Syvänsi, Finland, with an average of 0.7h of sunshine.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, an average UV index of 1 transforms into the following instructions:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Fend off the sun's harsh rays with appropriate clothing, a wide-brim hat, and UV-protective sunglasses. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Syvänsi?
What is the average humidity in December in Syvänsi?
How much does it rain in Syvänsi in December?
How many days does it snow in December in Syvänsi?
What is the month with the shortest days in Syvänsi?
How many hours of daylight does Syvänsi have in December?
What time are sunrise and sunset in December in Syvänsi?
What is the month with the least sunshine in Syvänsi?
How long on average sun shines in December in Syvänsi?
What are the months with the lowest UV index in Syvänsi?
How high is the UV index in December in Syvänsi?
Average temperature in December
Syvänsi, Finland
- Average high temperature in December: -2.7°C
The warmest month (with the highest average high temperature) is July (20.9°C).
The month with the lowest average high temperature is January (-5.8°C).
- Average low temperature in December: -5.7°C
The month with the highest average low temperature is July (12.9°C).
The coldest month (with the lowest average low temperature) is January (-9.9°C).
Average pressure in December
Syvänsi, Finland
- Average pressure in December: 1008mbar
The month with the highest atmospheric pressure is May (1014.5mbar).
The month with the lowest atmospheric pressure is December (1008mbar).
Average wind speed in December
Syvänsi, Finland
- Average wind speed in December: 14.7km/h
The windiest month (with the highest average wind speed) is November (15km/h).
The calmest month (with the lowest average wind speed) is July (10.9km/h).
Average humidity in December
Syvänsi, Finland
- Average humidity in December: 93%
The months with the highest relative humidity are January and February (95%).
The month with the lowest relative humidity is June (68%).
Average rainfall in December
Syvänsi, Finland
- Average rainfall in December: 40mm
The wettest month (with the highest rainfall) is July (48mm).
The driest month (with the least rainfall) is April (23mm).
Average rainfall days in December
Syvänsi, Finland
- Average rainfall days in December: 5.3 days
The month with the highest number of rainy days is July (13.7 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in December
Syvänsi, Finland
- Average snowfall in December: 216mm
The month with the highest snowfall is January (230mm).
The months with the least snowfall are July and August (0mm).
Average snowfall days in December
Syvänsi, Finland
- Average snowfall days in December: 21.1 days
The month with the highest number of snowfall days is January (23.2 days).
The months with the least snowfall days are July and August (0 days).
Average daylight in December /
Average sunshine in December
Syvänsi, Finland
- Average daylight in December: 5h and 1min
The month with the longest days is June (Average daylight: 19h and 42min).
The month with the shortest days is December (Average daylight: 5h and 12min).
- Average sunshine in December: 0h and 4min
The month with the most sunshine is June (Average sunshine: 12h and 6min).
The month with the least sunshine is December (Average sunshine: 0h and 42min).
Average sunshine days in December
Syvänsi, Finland
- Average sunshine days in December: 8.3 days
The month with the most sunshine days is May (19.3 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in December
Syvänsi, 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
Syvänsi, Finland
- Average cloud cover in December: 81
The months with the most cloud cover are January and February (Cloud cover 82).
The month with the least cloud cover is July (Cloud cover 42).
Average visibility in December
Syvänsi, Finland
- Average visibility in December: 7km
The month with the highest visibility is June (10km).
The month with the lowest visibility is February (5km).
