December weather forecastYlihärmä, Finland
December
Weather in December
December, the first month of the winter in Ylihärmä, is also a subzero cold month, with an average temperature varying between -5.2°C (22.6°F) and -2°C (28.4°F).Temperature
During the shift to December, Ylihärmä records a mild decrease in average high-temperature, moving from a cold 2°C (35.6°F) in November to a freezing cold -2°C (28.4°F). Ylihärmä's nighttime average temperature in December subtly descends to -5.2°C (22.6°F) from the daily highs.Humidity
In Ylihärmä, the average relative humidity in December is 92%.Rainfall
In Ylihärmä, during December, the rain falls for 6.7 days and regularly aggregates up to 31mm (1.22") of 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. The month with the most snowfall in Ylihärmä is December, when snow falls for 16.3 days and typically aggregates up to 145mm (5.71") of snow.Daylight
December has the shortest days of the year in Ylihärmä, with an average of 4h and 54min of daylight.On the first day of the month, sunrise is at 09:35 and sunset at 15:00. On the last day of December, sunrise is at 10:06 and sunset at 14:57 EET.
Sunshine
The month with the least sunshine is December, with an average of 1.1h of sunshine.UV index
The months with the lowest UV index in Ylihärmä are January through March, November and December, with an average maximum UV index of 1. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: In December, the maximum UV index of 1 translates into these guidelines:
Apart from children, who require continuous protection, most can endure sun exposure for up to an hour without experiencing burns. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. To mitigate harm from sun exposure, pick sunglasses offering UVA and UVB defense. Take heed! The reflection of snow can intensify the Sun's UV radiation nearly double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, Finland
- Average daylight in December: 4h and 54min
The month with the longest days is June (Average daylight: 20h and 12min).
The month with the shortest days is December (Average daylight: 4h and 54min).
- 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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
Ylihärmä, 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).
