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
Weather in December
Temperature
December ushers in a minor alteration in Pertteli's climate, with the average high-temperature moving from November's wintry 3.4°C (38.1°F) to a freezing cold -0.4°C (31.3°F). Pertteli observes a slightly reduced average nighttime temperature of -3.7°C (25.3°F) during December.Humidity
In December, the average relative humidity in Pertteli, Finland, is 91%.Rainfall
In Pertteli, Finland, in December, it is raining for 8.5 days, with typically 26mm (1.02") of accumulated precipitation. Throughout the year, there are 122 rainfall days, and 276mm (10.87") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. December is the month with the most snowfall. Snow falls for 15.3 days and accumulates 91mm (3.58") of snow.Daylight
With an average of 5h and 54min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 09:06 and sunset at 15:25. On the last day of December, in Pertteli, Finland, sunrise is at 09:33 and sunset at 15:26 EET.
Sunshine
With an average of 1.8h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index in Pertteli 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 minimal health hazard from exposure to the Sun's UV radiation for ordinary individuals.Note: A maximum high daily UV index of 1 during December translates into the following directions:
Children, babies, and those with sensitive skin should always be shielded from long periods of sun exposure. Avoiding the Sun during its peak radiation time around midday is a healthy practice. It's wise to wear UVA and UVB-blocking sunglasses when the sun shines brightly. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
How cold is December in Pertteli?
What is the average humidity in December in Pertteli?
How much does it rain in Pertteli in December?
What is the snowiest month in Pertteli?
How much does it snow in Pertteli in December?
What is the month with the shortest days in Pertteli?
How many hours of daylight does Pertteli have in December?
When are sunrise and sunset in December in Pertteli?
What is the month with the least sunshine in Pertteli?
How many hours of sunshine does Pertteli have in December?
When is the lowest UV index in Pertteli?
What is the UV index intensity in December in Pertteli?
Average temperature in December
Pertteli, Finland
- Average high temperature in December: -0.4°C
The warmest month (with the highest average high temperature) is July (21.2°C).
The month with the lowest average high temperature is January (-3.2°C).
- Average low temperature in December: -3.7°C
The month with the highest average low temperature is July (12.6°C).
The coldest month (with the lowest average low temperature) is January (-7.3°C).
Average pressure in December
Pertteli, Finland
- Average pressure in December: 1008.1mbar
The month with the highest atmospheric pressure is May (1014.9mbar).
The month with the lowest atmospheric pressure is December (1008.1mbar).
Average wind speed in December
Pertteli, Finland
- Average wind speed in December: 15.2km/h
The windiest month (with the highest average wind speed) is December (15.2km/h).
The calmest month (with the lowest average wind speed) is August (11km/h).
Average humidity in December
Pertteli, Finland
- Average humidity in December: 91%
The months with the highest relative humidity are January and February (93%).
The month with the lowest relative humidity is May (70%).
Average rainfall in December
Pertteli, Finland
- Average rainfall in December: 26mm
The wettest month (with the highest rainfall) is July (35mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in December
Pertteli, Finland
- Average rainfall days in December: 8.5 days
The month with the highest number of rainy days is July (15.9 days).
The month with the least rainy days is February (3.3 days).
Average snowfall in December
Pertteli, Finland
- Average snowfall in December: 91mm
The month with the highest snowfall is December (91mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Pertteli, Finland
- Average snowfall days in December: 15.3 days
The month with the highest number of snowfall days is December (15.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Pertteli, Finland
- Average daylight in December: 5h and 5min
The month with the longest days is June (Average daylight: 18h and 54min).
The month with the shortest days is December (Average daylight: 5h and 54min).
- Average sunshine in December: 1h and 5min
The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in December
Pertteli, Finland
- Average sunshine days in December: 10.4 days
The month with the most sunshine days is May (16.8 days).
The month with the least sunshine days is December (10.4 days).
Average UV index in December
Pertteli, Finland
- Average UV index in December: 1
The months with the highest UV index are June and 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
Pertteli, Finland
- Average cloud cover in December: 74
The months with the most cloud cover are February and December (Cloud cover 74).
The month with the least cloud cover is August (Cloud cover 38).
Average visibility in December
Pertteli, Finland
- Average visibility in December: 8km
The months with the highest visibility are May, June, July, August and September (9km).
The months with the lowest visibility are January, February and March (7km).
Pertteli, Finland
Weather forecast for your location
2. Allow the app to use your location
