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
Weather in December
Temperature
The advent of December sees the average high-temperature at a cool 12°C (53.6°F), subtly shifted from November's 14.5°C (58.1°F). An average nighttime temperature of 3.5°C (38.3°F) is observed in Arenas de San Juan during December.Humidity
In Arenas de San Juan, the average relative humidity in December is 74%.Rainfall
In Arenas de San Juan, in December, during 7.9 rainfall days, 31mm (1.22") of precipitation is typically accumulated. In Arenas de San Juan, during the entire year, the rain falls for 86.6 days and collects up to 245mm (9.65") of precipitation.Snowfall
January through March and December are months with snowfall. December is the first month it typically snows. Throughout December, in the average 0.3 snowfall days, it receives 2mm (0.08") of snow. Throughout the year, in Arenas de San Juan, there are 2.1 snowfall days, and 20mm (0.79") of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 08:14 and sunset at 17:51. On the last day of December, in Arenas de San Juan, sunrise is at 08:33 and sunset at 18:01 CET.
Sunshine
December has the least sunshine of the year in Arenas de San Juan, with an average of 6.3h of sunshine.UV index
November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Shield yourself from the harmful effects of UV radiation with sun-protective attire, a hat, and quality sunglasses. Be on the lookout! Nearly twofold UV radiation from the Sun can be reflected by snow.
Frequently asked questions
What is the usual temperature for Arenas de San Juan in December?
What is the average humidity in December in Arenas de San Juan?
How many days does it rain in December in Arenas de San Juan?
When does it start snowing in Arenas de San Juan?
What is the month with the shortest days in Arenas de San Juan?
What is the average length of the day in December in Arenas de San Juan?
When is the sunrise / sunset in December in Arenas de San Juan?
What is the month with the least sunshine in Arenas de San Juan?
How long on average sun shines in December in Arenas de San Juan?
What is the month with the lowest UV index in Arenas de San Juan?
What is the UV index reading in December in Arenas de San Juan?
Average temperature in December
Arenas de San Juan, Spain
- Average high temperature in December: 12°C
The warmest month (with the highest average high temperature) is July (33.9°C).
The month with the lowest average high temperature is January (10.5°C).
- Average low temperature in December: 3.5°C
The month with the highest average low temperature is July (20.1°C).
The coldest month (with the lowest average low temperature) is January (2.3°C).
Average pressure in December
Arenas de San Juan, Spain
- Average pressure in December: 1023.4mbar
The month with the highest atmospheric pressure is December (1023.4mbar).
The month with the lowest atmospheric pressure is April (1015mbar).
Average wind speed in December
Arenas de San Juan, Spain
- Average wind speed in December: 10.8km/h
The windiest months (with the highest average wind speed) are February and March (13.6km/h).
The calmest month (with the lowest average wind speed) is September (9.2km/h).
Average humidity in December
Arenas de San Juan, Spain
- Average humidity in December: 74%
The month with the highest relative humidity is January (76%).
The month with the lowest relative humidity is July (30%).
Average rainfall in December
Arenas de San Juan, Spain
- Average rainfall in December: 31mm
The wettest month (with the highest rainfall) is November (39mm).
The driest month (with the least rainfall) is July (4mm).
Average rainfall days in December
Arenas de San Juan, Spain
- Average rainfall days in December: 7.9 days
The month with the highest number of rainy days is April (12.8 days).
The months with the least rainy days are July and August (2.5 days).
Average snowfall in December
Arenas de San Juan, Spain
- Average snowfall in December: 2mm
The month with the highest snowfall is February (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Arenas de San Juan, Spain
- Average snowfall days in December: 0.3 days
The month with the highest number of snowfall days is February (0.8 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Arenas de San Juan, Spain
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 6h and 2min
The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 18min).
Average sunshine days in December
Arenas de San Juan, Spain
- Average sunshine days in December: 21.3 days
The month with the most sunshine days is July (28.3 days).
The month with the least sunshine days is April (15.5 days).
Average UV index in December
Arenas de San Juan, Spain
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 7).
The months with the lowest UV index are November and December (UV index 2).
Average cloud cover in December
Arenas de San Juan, Spain
- Average cloud cover in December: 32
The month with the most cloud cover is January (Cloud cover 39).
The months with the least cloud cover are July and August (Cloud cover 7).
Average visibility in December
Arenas de San Juan, Spain
- Average visibility in December: 9km
The months with the highest visibility are February, May, June, July, August, September and October (10km).
The months with the lowest visibility are January, March, April, November and December (9km).
Arenas de San Juan, Spain
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