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
A subtle shift in Porkala's weather is observed as November turns into December, with the average high temperature reducing from a wintry 5°C (41°F) to a still cold 1.7°C (35.1°F). Porkala logs an average low-temperature of -0.9°C (30.4°F) during the nights of December, subtly lower than its daytime highs.Humidity
The average relative humidity in December is 86%.Rainfall
In Porkala, during December, the rain falls for 14 days and regularly aggregates up to 55mm (2.17") of precipitation. Throughout the year, in Porkala, there are 165.8 rainfall days, and 570mm (22.44") of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall. In Porkala, during December, snow falls for 14.3 days and regularly aggregates up to 119mm (4.69") of snow. Throughout the year, there are 75.5 snowfall days, and 562mm (22.13") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 6h and 0min of daylight.On the first day of December, sunrise is at 08:57 and sunset at 15:25. On the last day of the month, sunrise is at 09:24 and sunset at 15:26 EET.
Sunshine
December has the least sunshine of the year, with an average of 1.6h of sunshine.UV index
The months with the lowest UV index in Porkala are January, February and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 1 in December translates into this advice:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Direct Sun exposure should be minimized especially during midday when radiation is most intense. Stay sun-safe with clothing that is both closely woven and worn loosely. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold is December in Porkala?
What is the average humidity in December in Porkala?
How many days does it rain in December in Porkala?
How many days does it snow in December in Porkala?
What is the month with the shortest days in Porkala?
What is the average length of the day in December in Porkala?
When is the sunrise / sunset in December in Porkala?
What is the month with the least sunshine in Porkala?
How many hours of sunshine does Porkala have in December?
What are the months with the lowest UV index in Porkala?
How high is the UV index in December in Porkala?
Average temperature in December
Porkala, Finland
- Average high temperature in December: 1.7°C
The warmest month (with the highest average high temperature) is July (19.4°C).
The month with the lowest average high temperature is January (-1.3°C).
- Average low temperature in December: -0.9°C
The month with the highest average low temperature is August (15°C).
The coldest month (with the lowest average low temperature) is January (-4.4°C).
Average pressure in December
Porkala, Finland
- Average pressure in December: 1008.5mbar
The month with the highest atmospheric pressure is May (1015mbar).
The month with the lowest atmospheric pressure is December (1008.5mbar).
Average wind speed in December
Porkala, Finland
- Average wind speed in December: 24km/h
The windiest month (with the highest average wind speed) is December (24km/h).
The calmest month (with the lowest average wind speed) is May (14.9km/h).
Average humidity in December
Porkala, Finland
- Average humidity in December: 86%
The month with the highest relative humidity is February (90%).
The month with the lowest relative humidity is May (74%).
Average rainfall in December
Porkala, Finland
- Average rainfall in December: 55mm
The wettest month (with the highest rainfall) is July (66mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in December
Porkala, Finland
- Average rainfall days in December: 14 days
The month with the highest number of rainy days is July (17.6 days).
The month with the least rainy days is February (7 days).
Average snowfall in December
Porkala, Finland
- Average snowfall in December: 119mm
The month with the highest snowfall is January (136mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Porkala, Finland
- Average snowfall days in December: 14.3 days
The month with the highest number of snowfall days is February (17.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Porkala, Finland
- Average daylight in December: 6h and 0min
The month with the longest days is June (Average daylight: 18h and 42min).
The month with the shortest days is December (Average daylight: 6h and 0min).
- Average sunshine in December: 1h and 4min
The month with the most sunshine is July (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).
Average sunshine days in December
Porkala, Finland
- Average sunshine days in December: 5.4 days
The month with the most sunshine days is May (15.4 days).
The month with the least sunshine days is December (5.4 days).
Average UV index in December
Porkala, Finland
- Average UV index in December: 1
The months with the highest UV index are July and August (UV index 5).
The months with the lowest UV index are January, February and December (UV index 1).
Average cloud cover in December
Porkala, 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
Porkala, 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).
