December weather forecastRoiu, Estonia
December
Weather in December
December, the first month of the winter in Roiu, is still a freezing cold month, with temperature in the range of an average low of -3.8°C (25.2°F) and an average high of -0.5°C (31.1°F).Temperature
December brings a slight decrease in the average high-temperature, shifting from a wintry 3.5°C (38.3°F) in November to a subzero cold -0.5°C (31.1°F). Roiu's nighttime temperatures in December reveal a minimal variation from the daytime highs, averaging at a still freezing cold -3.8°C (25.2°F).Humidity
In December, the average relative humidity in Roiu is 92%.Rainfall
In Roiu, in December, it is raining for 11.1 days, with typically 42mm (1.65") of accumulated precipitation. Throughout the year, there are 170.9 rainfall days, and 525mm (20.67") of precipitation is accumulated.Snowfall
Months with snowfall in Roiu, Estonia, are January through May, October through December. In Roiu, in December, during 20.4 snowfall days, 183mm (7.2") of snow is typically accumulated. Throughout the year, in Roiu, there are 99.4 snowfall days, and 882mm (34.72") of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 6h and 30min of daylight.On the first day of the month, sunrise is at 08:35 and sunset at 15:28. On the last day of December, in Roiu, sunrise is at 09:00 and sunset at 15:31 EET.
Sunshine
The month with the least sunshine is December, with an average of 1.8h of sunshine.UV index
January through March, October through December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health hazard from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Boost your sun resistance with garments that are densely woven yet spacious. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Roiu, Estonia
- Average high temperature in December: -0.5°C
The warmest month (with the highest average high temperature) is July (23.1°C).
The month with the lowest average high temperature is January (-3.5°C).
- Average low temperature in December: -3.8°C
The month with the highest average low temperature is July (12.8°C).
The coldest month (with the lowest average low temperature) is January (-7.6°C).
Average pressure in December
Roiu, Estonia
- Average pressure in December: 1010.8mbar
The month with the highest atmospheric pressure is October (1015.5mbar).
The month with the lowest atmospheric pressure is December (1010.8mbar).
Average wind speed in December
Roiu, Estonia
- Average wind speed in December: 14.3km/h
The windiest month (with the highest average wind speed) is December (14.3km/h).
The calmest months (with the lowest average wind speed) are May and August (11km/h).
Average humidity in December
Roiu, Estonia
- Average humidity in December: 92%
The month with the highest relative humidity is February (94%).
The month with the lowest relative humidity is May (71%).
Average rainfall in December
Roiu, Estonia
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is June (59mm).
The driest months (with the least rainfall) are March and April (32mm).
Average rainfall days in December
Roiu, Estonia
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (19.3 days).
The month with the least rainy days is February (6.3 days).
Average snowfall in December
Roiu, Estonia
- Average snowfall in December: 183mm
The month with the highest snowfall is February (217mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Roiu, Estonia
- Average snowfall days in December: 20.4 days
The month with the highest number of snowfall days is January (21.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Roiu, Estonia
- Average daylight in December: 6h and 30min
The month with the longest days is June (Average daylight: 18h and 6min).
The month with the shortest days is December (Average daylight: 6h and 30min).
- Average sunshine in December: 1h and 48min
The month with the most sunshine is June (Average sunshine: 10h and 48min).
The month with the least sunshine is December (Average sunshine: 1h and 48min).
Average sunshine days in December
Roiu, Estonia
- Average sunshine days in December: 3.7 days
The month with the most sunshine days is May (13.3 days).
The month with the least sunshine days is December (3.7 days).
Average UV index in December
Roiu, Estonia
- 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, October, November and December (UV index 1).
Average cloud cover in December
Roiu, Estonia
- Average cloud cover in December: 82
The month with the most cloud cover is December (Cloud cover 82).
The months with the least cloud cover are May and July (Cloud cover 40).
Average visibility in December
Roiu, Estonia
- Average visibility in December: 7km
The months with the highest visibility are May, June, July and August (9km).
The months with the lowest visibility are January and February (6km).
