December weather forecastSisterna, Spain
December
Weather in December
The first month of the winter, December, is still a chilly month in Sisterna, Spain, with an average temperature fluctuating between 0.9°C (33.6°F) and 8.1°C (46.6°F).Temperature
Sisterna observes an average high-temperature of a still frosty 8.1°C (46.6°F) in December, barely different from 9.8°C (49.6°F) in November. Sisterna experiences an average low-temperature reading of 0.9°C (33.6°F) throughout December.Humidity
In December, the average relative humidity in Sisterna is 83%.Rainfall
In Sisterna, during December, the rain falls for 13.5 days and regularly aggregates up to 74mm (2.91") of precipitation. In Sisterna, during the entire year, the rain falls for 157.5 days and collects up to 576mm (22.68") of precipitation.Snowfall
Months with snowfall in Sisterna are January through April, November and December. In Sisterna, in December, during 1.3 snowfall days, 9mm (0.35") of snow is typically accumulated. Throughout the year, in Sisterna, there are 8 snowfall days, and 69mm (2.72") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 08:38 and sunset at 17:53. On the last day of December, sunrise is at 08:57 and sunset at 18:02 CET.
Sunshine
With an average of 5.7h of sunshine, December has the least sunshine of the year.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The maximum daily UV index of 2 during December translates into the following directions:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. Avoid the Sun's strongest UV rays by seeking shade and limiting exposure during midday. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Sisterna, Spain
- Average high temperature in December: 8.1°C
The warmest month (with the highest average high temperature) is August (26.3°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in December: 0.9°C
The months with the highest average low temperature are July and August (10.8°C).
The coldest month (with the lowest average low temperature) is February (-0.3°C).
Average pressure in December
Sisterna, Spain
- Average pressure in December: 1022.4mbar
The month with the highest atmospheric pressure is December (1022.4mbar).
The month with the lowest atmospheric pressure is April (1015.5mbar).
Average wind speed in December
Sisterna, Spain
- Average wind speed in December: 8.1km/h
The windiest month (with the highest average wind speed) is February (9km/h).
The calmest month (with the lowest average wind speed) is September (6.4km/h).
Average humidity in December
Sisterna, Spain
- Average humidity in December: 83%
The months with the highest relative humidity are January and November (85%).
The month with the lowest relative humidity is August (62%).
Average rainfall in December
Sisterna, Spain
- Average rainfall in December: 74mm
The wettest month (with the highest rainfall) is November (91mm).
The driest month (with the least rainfall) is August (15mm).
Average rainfall days in December
Sisterna, Spain
- Average rainfall days in December: 13.5 days
The months with the highest number of rainy days are April and November (17.4 days).
The month with the least rainy days is August (5.5 days).
Average snowfall in December
Sisterna, Spain
- Average snowfall in December: 9mm
The month with the highest snowfall is February (32mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sisterna, Spain
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is February (2.7 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Sisterna, Spain
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 5h and 42min
The month with the most sunshine is June (Average sunshine: 12h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 42min).
Average sunshine days in December
Sisterna, Spain
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is August (21.7 days).
The month with the least sunshine days is November (8.8 days).
Average UV index in December
Sisterna, Spain
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 5).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sisterna, Spain
- Average cloud cover in December: 46
The month with the most cloud cover is November (Cloud cover 52).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in December
Sisterna, Spain
- Average visibility in December: 8km
The months with the highest visibility are June, July, August and September (9km).
The months with the lowest visibility are January and November (7km).
