December
Weather in December
Temperature
Costa Calma witnesses its lowest temperatures in January, February and December, reaching an average of 20°C (68°F).Rainfall
In December, in Costa Calma, the rain falls for 3 days. Throughout December, 18mm (0.71") of precipitation is accumulated. In Costa Calma, during the entire year, the rain falls for 19 days and collects up to 93mm (3.66") of precipitation.Sea temperature
In Costa Calma, in December, the average water temperature is 20°C (68°F).Note: Swimming in water that is 20°C (68°F) is not enjoyable for most. Breathing becomes more challenging to manage as the water temperature dips from 21°C (69.8°F) to 15°C (59°F).
Daylight
With an average of 10h and 24min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:31 and sunset at 18:00. On the last day of December, sunrise is at 07:48 and sunset at 18:11 WET.
Sunshine
December has the least sunshine of the year, with an average of 6h of sunshine.UV index
The months with the lowest UV index in Costa Calma are January and December, with an average maximum UV index of 4. A UV Index estimate of 3 to 5 represents a medium vulnerability from exposure to the Sun's UV radiation for the ordinary person.Note: A typical high UV index of 4 in December suggests the following recommendations:
Exercise caution. Those with pale skin may experience burns in less than half an hour. Exposing oneself to the midday Sun can be harmful due to the strong UV radiation; limit your time outside. Clothes that are both tight-knit and comfortably loose are prime choices for sun protection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
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Average temperature in December
Costa Calma, Spain
- Average high temperature in December: 20°C
The warmest months (with the highest average high temperature) are July, August and September (27°C).
The months with the lowest average high temperature are January, February and December (20°C).
- Average low temperature in December: 14°C
The months with the highest average low temperature are July, August and September (20°C).
The coldest months (with the lowest average low temperature) are January and February (13°C).
Average rainfall in December
Costa Calma, Spain
- Average rainfall in December: 18mm
The wettest month (with the highest rainfall) is February (19mm).
The driest months (with the least rainfall) are June, July and August (0mm).
Average rainfall days in December
Costa Calma, Spain
- Average rainfall days in December: 3 days
The months with the highest number of rainy days are January, February, November and December (3 days).
The months with the least rainy days are June, July and August (0 days).
Average sea temperature in December
Costa Calma, Spain
- Average sea temperature in December: 20°C
The best month for swimming (with the highest average sea temperature) is September (23°C).
The coldest months (with the lowest average sea temperature) are February and March (18°C).
Average daylight in December /
Average sunshine in December
Costa Calma, Spain
- Average daylight in December: 10h and 2min
The month with the longest days is June (Average daylight: 13h and 54min).
The month with the shortest days is December (Average daylight: 10h and 24min).
- Average sunshine in December: 6h
The months with the most sunshine are May, June, July and August (Average sunshine: 9h).
The month with the least sunshine is December (Average sunshine: 6h).
Average UV index in December
Costa Calma, Spain
- Average UV index in December: 4
The months with the highest UV index are June, July and August (UV index 11).
The months with the lowest UV index are January and December (UV index 4).
