December weather forecastRumia, Poland
December
Weather in December
The first month of the winter, December, is also an icy month in Rumia, Poland, with an average temperature fluctuating between 0.3°C (32.5°F) and 2.8°C (37°F).Temperature
The arrival of December corresponds with a minor reduction in the average high-temperature, down from November's chilly 7°C (44.6°F) to a cold 2.8°C (37°F). Rumia reports an average low-temperature of 0.3°C (32.5°F) during the subtly cooler December nights.Humidity
January, February and December, with an average relative humidity of 86%, are the most humid months in Rumia, Poland.Rainfall
In Rumia, during December, the rain falls for 12.9 days and regularly aggregates up to 35mm (1.38") of precipitation. Throughout the year, there are 150.7 rainfall days, and 391mm (15.39") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 7.5 days. Throughout December, 57mm (2.24") of snow is accumulated. In Rumia, during the entire year, snow falls for 37.5 days and aggregates up to 235mm (9.25") of snow.Daylight
December has the shortest days of the year, with an average of 7h and 24min of daylight.On the first day of the month, sunrise is at 07:45 and sunset at 15:25. On the last day of December, in Rumia, sunrise is at 08:08 and sunset at 15:30 CET.
Sunshine
The average sunshine in December is 3.1h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index value of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: In December, a daily maximum UV index of 1 leads to the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Direct exposure to the Sun's intense radiation around midday should be avoided for health reasons. Opt for tightly woven and loose clothing to enhance protection from the Sun. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Rumia, Poland
- Average high temperature in December: 2.8°C
The warmest month (with the highest average high temperature) is August (21.7°C).
The month with the lowest average high temperature is January (0.8°C).
- Average low temperature in December: 0.3°C
The month with the highest average low temperature is August (14.8°C).
The coldest month (with the lowest average low temperature) is January (-1.7°C).
Average pressure in December
Rumia, Poland
- Average pressure in December: 1012.9mbar
The month with the highest atmospheric pressure is October (1016.5mbar).
The month with the lowest atmospheric pressure is December (1012.9mbar).
Average wind speed in December
Rumia, Poland
- Average wind speed in December: 19.2km/h
The windiest month (with the highest average wind speed) is December (19.2km/h).
The calmest months (with the lowest average wind speed) are June and August (13.5km/h).
Average humidity in December
Rumia, Poland
- Average humidity in December: 86%
The months with the highest relative humidity are January, February and December (86%).
The month with the lowest relative humidity is April (72%).
Average rainfall in December
Rumia, Poland
- Average rainfall in December: 35mm
The wettest month (with the highest rainfall) is July (56mm).
The driest month (with the least rainfall) is April (15mm).
Average rainfall days in December
Rumia, Poland
- Average rainfall days in December: 12.9 days
The month with the highest number of rainy days is July (17.5 days).
The months with the least rainy days are January and February (8.2 days).
Average snowfall in December
Rumia, Poland
- Average snowfall in December: 57mm
The month with the highest snowfall is January (64mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Rumia, Poland
- Average snowfall days in December: 7.5 days
The months with the highest number of snowfall days are January and February (9.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Rumia, Poland
- Average daylight in December: 7h and 24min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 24min).
- Average sunshine in December: 3h and 6min
The month with the most sunshine is August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 2h and 54min).
Average sunshine days in December
Rumia, Poland
- Average sunshine days in December: 10.8 days
The month with the most sunshine days is April (17.1 days).
The month with the least sunshine days is December (10.8 days).
Average UV index in December
Rumia, Poland
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Rumia, Poland
- Average cloud cover in December: 70
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in December
Rumia, Poland
- Average visibility in December: 9km
The months with the highest visibility are April, June, July, August, September and October (10km).
The months with the lowest visibility are January, February, March, May, November and December (9km).
