December weather forecastSeinäjoki, Finland
December
Weather in December
December in Seinäjoki marks the beginning of a long, severe winter. The climate takes a polar plunge as the temperature dips considerably, inundating the city with an average snowfall of 145mm (5.71"), a high not seen in any other month. The city witnesses minimal daylight and sunshine hours. Wind gusts reach their peak, rendering the temperatures colder. The pressure drops, signaling the onset of the harshest winter months ahead.Temperature
In December, the average high-temperature in Seinäjoki marginally drops from a cold 2°C (35.6°F) in November to a subzero cold -2°C (28.4°F). Nights in December cool down, indicating a minor disparity from daytime highs with an average low-temperature of -5.2°C (22.6°F).Humidity
The average relative humidity in December in Seinäjoki, Finland, is 92%.Rainfall
In Seinäjoki, in December, it is raining for 6.7 days, with typically 31mm (1.22") of accumulated precipitation. Throughout the year, there are 134.7 rainfall days, and 432mm (17.01") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. December is the month with the most snowfall. Snow falls for 16.3 days and accumulates 145mm (5.71") of snow.Daylight
The month with the shortest days is December, with an average of 5h and 0min of daylight.On the first day of December, sunrise is at 09:31 and sunset at 15:04. On the last day of the month, sunrise is at 10:01 and sunset at 15:02 EET.
Sunshine
With an average of 1.1h of sunshine, December has the least sunshine of the year in Seinäjoki.UV index
The months with the lowest UV index in Seinäjoki are January through March, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.Note: In December, an average UV index of 1 transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Seinäjoki, Finland
- Average high temperature in December: -2°C
The warmest month (with the highest average high temperature) is July (21.4°C).
The month with the lowest average high temperature is January (-4.5°C).
- Average low temperature in December: -5.2°C
The month with the highest average low temperature is July (11.8°C).
The coldest month (with the lowest average low temperature) is January (-8.8°C).
Average pressure in December
Seinäjoki, Finland
- Average pressure in December: 1006mbar
The month with the highest atmospheric pressure is May (1014.3mbar).
The month with the lowest atmospheric pressure is December (1006mbar).
Average wind speed in December
Seinäjoki, Finland
- Average wind speed in December: 12.1km/h
The windiest month (with the highest average wind speed) is December (12.1km/h).
The calmest month (with the lowest average wind speed) is July (9.7km/h).
Average humidity in December
Seinäjoki, Finland
- Average humidity in December: 92%
The months with the highest relative humidity are January and February (94%).
The months with the lowest relative humidity are May and June (67%).
Average rainfall in December
Seinäjoki, Finland
- Average rainfall in December: 31mm
The wettest month (with the highest rainfall) is August (62mm).
The driest month (with the least rainfall) is February (20mm).
Average rainfall days in December
Seinäjoki, Finland
- Average rainfall days in December: 6.7 days
The month with the highest number of rainy days is August (18.1 days).
The month with the least rainy days is February (3.1 days).
Average snowfall in December
Seinäjoki, Finland
- Average snowfall in December: 145mm
The month with the highest snowfall is December (145mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Seinäjoki, Finland
- Average snowfall days in December: 16.3 days
The month with the highest number of snowfall days is December (16.3 days).
The months with the least snowfall days are July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Seinäjoki, Finland
- Average daylight in December: 5h and 0min
The month with the longest days is June (Average daylight: 20h and 0min).
The month with the shortest days is December (Average daylight: 5h and 0min).
- Average sunshine in December: 1h and 6min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 1h and 6min).
Average sunshine days in December
Seinäjoki, Finland
- Average sunshine days in December: 11.1 days
The month with the most sunshine days is February (15 days).
The month with the least sunshine days is November (10.4 days).
Average UV index in December
Seinäjoki, 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
Seinäjoki, Finland
- Average cloud cover in December: 73
The month with the most cloud cover is January (Cloud cover 75).
The month with the least cloud cover is June (Cloud cover 43).
Average visibility in December
Seinäjoki, Finland
- Average visibility in December: 7km
The months with the highest visibility are May, June and July (9km).
The months with the lowest visibility are January, February and March (6km).
