December weather forecastRauma, Finland
December
Weather in December
December sky in Rauma is painted in shades of winter, marked by icy temperatures dropping to a low of -1.5°C (29.3°F). The increased snowfall of 79mm (3.11") points towards a white Christmas possibility. Shortest daylight times of the year are found in December, with a mere 5.7 hours on average. More prolific cloud cover envelops the city, dragging visibility down. The whirls of winter winds gusting up to maximum 32km/h (19.9mph) enhance the nip in the air, marking an emphatic finale to the year.Temperature
December's arrival subtly correlates with a reduction in the average high-temperature, down from a cold 4.5°C (40.1°F) in November to a still wintry 1°C (33.8°F). Throughout December, Rauma records a steady low-temperature average of -1.5°C (29.3°F), a minor decrease from its daytime counterpart.Humidity
The average relative humidity in December in Rauma is 87%.Rainfall
In December, the rain falls for 11.3 days. Throughout December, 42mm (1.65") of precipitation is accumulated. Throughout the year, in Rauma, there are 135.2 rainfall days, and 422mm (16.61") of precipitation is accumulated.Snowfall
Months with snowfall in Rauma are January through May, October through December. In Rauma, during December, snow falls for 11.9 days and regularly aggregates up to 79mm (3.11") of snow. Throughout the year, in Rauma, there are 58.1 snowfall days, and 382mm (15.04") of snow is accumulated.Daylight
With an average of 5h and 42min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 09:19 and sunset at 15:26. On the last day of December, sunrise is at 09:47 and sunset at 15:26 EET.
Sunshine
The months with the least sunshine in Rauma are January and December, with an average of 2.1h of sunshine.UV index
The months with the lowest UV index are January through March and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: In December, the maximum UV index of 1 translates into these guidelines:
It is important to always shield children, babies, and individuals with sensitive skin from prolonged exposure to the sun. Solar radiation is at its peak intensity during midday, so it's advisable to stay indoors or in the shade. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Beware! Reflection from snow can magnify the Sun's UV radiation nearly twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rauma, Finland
- Average high temperature in December: 1°C
The warmest month (with the highest average high temperature) is July (19.7°C).
The months with the lowest average high temperature are January and February (-1.5°C).
- Average low temperature in December: -1.5°C
The month with the highest average low temperature is August (14°C).
The coldest month (with the lowest average low temperature) is February (-5°C).
Average pressure in December
Rauma, Finland
- Average pressure in December: 1006.9mbar
The month with the highest atmospheric pressure is May (1014.8mbar).
The month with the lowest atmospheric pressure is December (1006.9mbar).
Average wind speed in December
Rauma, Finland
- Average wind speed in December: 20.7km/h
The windiest month (with the highest average wind speed) is December (20.7km/h).
The calmest month (with the lowest average wind speed) is July (14.5km/h).
Average humidity in December
Rauma, Finland
- Average humidity in December: 87%
The month with the highest relative humidity is February (91%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Rauma, Finland
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (21mm).
Average rainfall days in December
Rauma, Finland
- Average rainfall days in December: 11.3 days
The month with the highest number of rainy days is July (15.8 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in December
Rauma, Finland
- Average snowfall in December: 79mm
The month with the highest snowfall is March (88mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Rauma, Finland
- Average snowfall days in December: 11.9 days
The month with the highest number of snowfall days is March (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rauma, Finland
- Average daylight in December: 5h and 42min
The month with the longest days is June (Average daylight: 19h and 12min).
The month with the shortest days is December (Average daylight: 5h and 42min).
- Average sunshine in December: 2h and 6min
The month with the most sunshine is June (Average sunshine: 12h and 18min).
The months with the least sunshine are January and December (Average sunshine: 2h and 6min).
Average sunshine days in December
Rauma, Finland
- Average sunshine days in December: 10.7 days
The month with the most sunshine days is June (16.8 days).
The month with the least sunshine days is December (10.7 days).
Average UV index in December
Rauma, 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 and December (UV index 1).
Average cloud cover in December
Rauma, Finland
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 71).
The months with the least cloud cover are July and August (Cloud cover 36).
Average visibility in December
Rauma, Finland
- Average visibility in December: 9km
The months with the highest visibility are May, June, July, August and September (10km).
The months with the lowest visibility are January, February and March (8km).
