December weather forecastIslantilla, Spain
December
Weather in December
The first month of the winter, December, is still a comfortable month in Islantilla, Spain, with an average temperature ranging between min 8°C (46.4°F) and max 16°C (60.8°F).Temperature
Islantilla's coldest period falls in January and December, when the average high-temperatures ascend to 16°C (60.8°F).Rainfall
The month with the most rainfall is December, when the rain falls for 13 days and typically aggregates up to 87mm (3.43") of precipitation.Sea temperature
In Islantilla, the average seawater temperature in December is 17°C (62.6°F).Note: In water with a temperature of 17°C (62.6°F), most individuals do not find swimming enjoyable. As the temperature falls from 21°C (69.8°F) to 15°C (59°F), breathing control becomes more difficult.
Daylight
With an average of 9h and 42min of daylight, December has the shortest days of the year in Islantilla.On the first day of the month, sunrise is at 08:24 and sunset at 18:11. On the last day of December, in Islantilla, sunrise is at 08:42 and sunset at 18:21 CET.
Sunshine
The months with the least sunshine are January and December, with an average of 5h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Most individuals face no significant issues with extended sun exposure, but it is always essential to protect children, babies, and those with sensitive skin. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Experience reduced UV exposure by about half when donning a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Islantilla, Spain
- Average high temperature in December: 16°C
The warmest months (with the highest average high temperature) are July and August (31°C).
The months with the lowest average high temperature are January and December (16°C).
- Average low temperature in December: 8°C
The month with the highest average low temperature is August (19°C).
The coldest month (with the lowest average low temperature) is January (7°C).
Average rainfall in December
Islantilla, Spain
- Average rainfall in December: 87mm
The wettest month (with the highest rainfall) is December (87mm).
The driest month (with the least rainfall) is July (1mm).
Average rainfall days in December
Islantilla, Spain
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is December (13 days).
The months with the least rainy days are July and August (1 days).
Average sea temperature in December
Islantilla, Spain
- Average sea temperature in December: 17°C
The best month for swimming (with the highest average sea temperature) is August (22°C).
The coldest months (with the lowest average sea temperature) are January, February and March (16°C).
Average daylight in December /
Average sunshine in December
Islantilla, Spain
- Average daylight in December: 9h and 42min
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 42min).
- Average sunshine in December: 5h
The month with the most sunshine is July (Average sunshine: 12h).
The months with the least sunshine are January and December (Average sunshine: 5h).
Average UV index in December
Islantilla, Spain
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 9).
The months with the lowest UV index are January and December (UV index 2).





