Costa Calma
Spain
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Costa Calma, Spain

The first month of the winter, December, is also an agreeable month in Costa Calma, Spain, with average temperature varying between 14°C (57.2°F) and 20°C (68°F).

Temperature

The coldest months are January, February and December, with an average high-temperature of 20°C (68°F).

Rainfall

In December, in Costa Calma, the rain falls for 3 days. Throughout December, 18mm (0.7") of precipitation is accumulated. Throughout the year, there are 19 rainfall days, and 93mm (3.7") of precipitation is accumulated.

Sea temperature

In December, the average sea temperature is 20°C (68°F). For most, swimming in 20°C (68°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).

Daylight

With an average of 10.4h of daylight, December has the shortest days of the year.

Sunshine

December has the least sunshine of the year in Costa Calma, with an average of 6h of sunshine.

UV index

Months with the lowest UV index in Costa Calma are January and December, with an average maximum UV index of 4. A UV Index of 3 to 5 symbolizes a moderate health risk from the exposure to the Sun's UV rays for the ordinary person.
In December, the average maximum UV index of 4 translate into the following recommendations:
Take precautions - Protection against the skin and eye damage is obliged. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes.

What are the coldest months in Costa Calma?

The coldest months in Costa Calma, Spain, are January, February and December, with an average high-temperature of 20°C (68°F).

What is the temperature in December in Costa Calma?

In Costa Calma, in December, the average high-temperature is 20°C (68°F), and the average low-temperature is 14°C (57.2°F).

How many days does it rain in December in Costa Calma?

In Costa Calma, Spain, during December, the rain falls for 3 days and regularly aggregates up to 18mm (0.7") of precipitation.

How cold is the water in December in Costa Calma?

In December, the average sea temperature is 20°C (68°F). For swimming, a surface water temperature of 20°C (68°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).

What is the month with the shortest days in Costa Calma?

The month with the shortest days in Costa Calma, Spain, is December, with an average of 10.4h of daylight.

What is the average length of the day in December in Costa Calma?

The average length of the day in December is 10.4h.

What is the month with the least sunshine in Costa Calma?

With an average of 6h of sunshine, December has the least sunshine of the year in Costa Calma.

How long on average sun shines in December in Costa Calma?

In December, the average sunshine is 6h.

What is the month with the lowest UV index in Costa Calma?

Months with the lowest UV index in Costa Calma are January and December, with an average maximum UV index of 4.

What is the UV index reading in December in Costa Calma?

In Costa Calma, the average daily maximum UV index in December is 4. A UV Index value of 3 to 5 symbolizes a medium health risk from unprotected exposure to the UV radiation.
Average temperature in December - Costa Calma, Spain
  • Average high temperature in December: 20°C

Warmest months (with the highest average high temperature) are July, August and September (27°C).
Months with the lowest average high temperature are January, February and December (20°C).

  • Average low temperature in December: 14°C

Months with the highest average low temperature are July, August and September (20°C).
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).
Driest months (with the lowest rainfall) are June, July and August (0mm).

Average rainfall days in December - Costa Calma, Spain
  • Average rainfall days in December: 3 days

Months with the highest number of rainy days are January, February, November and December (3 days).
Months with the lowest number of 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).
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: 10.4h

The month with the longest days is June (Average daylight: 13.9h).
The month with shortest days is December (Average daylight: 10.4h).

  • Average sunshine in December: 6h

Months with most sunshine are May, June, July and August (Average sunshine: 9h).
The month with least sunshine is December (Average sunshine: 6h).

Average UV index in December - Costa Calma, Spain
  • Average UV index in December: 4

Months with the highest UV index are June, July and August (UV index 11).
Months with the lowest UV index are January and December (UV index 4).