December weather forecast
San Sebastián de los Ballesteros, Spain

December

Weather in December

The first month of the winter, December, is also a moderate month in San Sebastián de los Ballesteros, Spain, with an average temperature varying between 6.5°C (43.7°F) and 14.8°C (58.6°F).

Temperature

San Sebastián de los Ballesteros experiences a subtle adjustment in high-temperatures to a mild 14.8°C (58.6°F) with the onset of December, maintaining near parity with November's 17.1°C (62.8°F). In San Sebastián de los Ballesteros, the average low-temperature during the month of December is a frosty 6.5°C (43.7°F).

Humidity

In San Sebastián de los Ballesteros, the average relative humidity in December is 73%.

Rainfall

In December, in San Sebastián de los Ballesteros, the rain falls for 7.4 days. Throughout December, 36mm (1.42") of precipitation is accumulated. In San Sebastián de los Ballesteros, during the entire year, the rain falls for 81.8 days and collects up to 263mm (10.35") of precipitation.

Daylight

December has the shortest days of the year in San Sebastián de los Ballesteros, with an average of 9h and 36min of daylight.
On the first day of December, sunrise is at 08:15 and sunset at 18:01. On the last day of the month, sunrise is at 08:34 and sunset at 18:10 CET.

Sunshine

With an average of 7.4h of sunshine, December has the least sunshine of the year in San Sebastián de los Ballesteros.

UV index

January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.
Note: The UV index of 3 in December translates into these instructions:
Guard yourself - An obligation to protect skin and eyes from harm exists. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear.

Frequently asked questions

What is the usual temperature for San Sebastián de los Ballesteros in December?
December temperatures in San Sebastián de los Ballesteros vary between a high-temperature of 14.8°C (58.6°F) and a low-temperature of 6.5°C (43.7°F). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is evaluated at 31°C (87.8°F).
What is the average humidity in December in San Sebastián de los Ballesteros?
In San Sebastián de los Ballesteros, Spain, the average relative humidity in December is 73%.
How many days does it rain in December in San Sebastián de los Ballesteros?
In December, in San Sebastián de los Ballesteros, the rain falls for 7.4 days. Throughout December, 36mm (1.42") of precipitation is accumulated.
What is the month with the shortest days in San Sebastián de los Ballesteros?
The month with the shortest days in San Sebastián de los Ballesteros is December, with an average of 9h and 36min of daylight.
How many hours of daylight does San Sebastián de los Ballesteros have in December?
The average day length in December in San Sebastián de los Ballesteros is 9h and 37min.
What time are sunrise and sunset in December in San Sebastián de los Ballesteros?
On the first day of December in San Sebastián de los Ballesteros, sunrise is at 08:15 and sunset at 18:01. On the last day of the month, sunrise is at 08:34 and sunset at 18:10 CET.
What is the month with the least sunshine in San Sebastián de los Ballesteros?
December has the least sunshine of the year in San Sebastián de los Ballesteros, with an average of 7.4h of sunshine.
How long on average sun shines in December in San Sebastián de los Ballesteros?
In San Sebastián de los Ballesteros, the average sunshine duration in December is 7.4h.
What are the months with the lowest UV index in San Sebastián de los Ballesteros?
January, February, November and December, with an average maximum UV index of 3, are months with the lowest UV index.
How high is the UV index in December in San Sebastián de los Ballesteros?
In December, the average daily maximum UV index in San Sebastián de los Ballesteros, Spain, is 3. A UV Index reading of 3 to 5 represents a medium health risk from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average wind speed
Average max. wind speed
Average wind speed gusts
Average humidity
Average rainfall
Average rainfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility
Average temperature in December - San Sebastián de los Ballesteros, Spain
Average temperature in December
San Sebastián de los Ballesteros, Spain
  • Average high temperature in December: 14.8°C

The warmest month (with the highest average high temperature) is August (36.2°C).
The month with the lowest average high temperature is January (13.3°C).

  • Average low temperature in December: 6.5°C

The month with the highest average low temperature is August (21.2°C).
The coldest month (with the lowest average low temperature) is January (4.7°C).

Average pressure in December - San Sebastián de los Ballesteros, Spain
Average pressure in December
San Sebastián de los Ballesteros, Spain
  • Average pressure in December: 1023mbar

The month with the highest atmospheric pressure is December (1023mbar).
The month with the lowest atmospheric pressure is July (1015mbar).

Average wind speed in December - San Sebastián de los Ballesteros, Spain
Average wind speed in December
San Sebastián de los Ballesteros, Spain
  • Average wind speed in December: 8.6km/h

The windiest month (with the highest average wind speed) is February (10.3km/h).
The calmest months (with the lowest average wind speed) are September and October (7.3km/h).

Average humidity in December - San Sebastián de los Ballesteros, Spain
Average humidity in December
San Sebastián de los Ballesteros, Spain
  • Average humidity in December: 73%

The month with the highest relative humidity is January (76%).
The months with the lowest relative humidity are July and August (35%).

Average rainfall in December - San Sebastián de los Ballesteros, Spain
Average rainfall in December
San Sebastián de los Ballesteros, Spain
  • Average rainfall in December: 36mm

The wettest month (with the highest rainfall) is March (41mm).
The driest month (with the least rainfall) is July (2mm).

Average rainfall days in December - San Sebastián de los Ballesteros, Spain
Average rainfall days in December
San Sebastián de los Ballesteros, Spain
  • Average rainfall days in December: 7.4 days

The month with the highest number of rainy days is March (12.1 days).
The month with the least rainy days is July (1.8 days).

Average daylight in December / Average sunshine in December - San Sebastián de los Ballesteros, Spain
Average daylight in December /
Average sunshine in December
San Sebastián de los Ballesteros, Spain
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 36min).

  • Average sunshine in December: 7h and 2min

The month with the most sunshine is June (Average sunshine: 11h and 42min).
The month with the least sunshine is December (Average sunshine: 7h and 24min).

Average sunshine days in December - San Sebastián de los Ballesteros, Spain
Average sunshine days in December
San Sebastián de los Ballesteros, Spain
  • Average sunshine days in December: 22.4 days

The month with the most sunshine days is July (28.9 days).
The month with the least sunshine days is April (16.3 days).

Average UV index in December - San Sebastián de los Ballesteros, Spain
Average UV index in December
San Sebastián de los Ballesteros, Spain
  • Average UV index in December: 3

The months with the highest UV index are June, July and August (UV index 7).
The months with the lowest UV index are January, February, November and December (UV index 3).

Average cloud cover in December - San Sebastián de los Ballesteros, Spain
Average cloud cover in December
San Sebastián de los Ballesteros, Spain
  • Average cloud cover in December: 30

The month with the most cloud cover is January (Cloud cover 35).
The month with the least cloud cover is July (Cloud cover 5).

Average visibility in December - San Sebastián de los Ballesteros, Spain
Average visibility in December
San Sebastián de los Ballesteros, Spain
  • Average visibility in December: 10km

The months with the highest visibility are February, May, June, July, August, September, October, November and December (10km).
The months with the lowest visibility are January, March and April (9km).

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