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

September weather forecast and climate
Costa Calma, Spain

September, the first month of the autumn, in Costa Calma, is still a warm month, with average temperature varying between 20°C (68°F) and 27°C (80.6°F).

Temperature

The warmest months are July through September, with an average high-temperature of 27°C (80.6°F).

Rainfall

January through May, September through December are months with rainfall in Costa Calma. September is the first month it rains. Throughout September, in the average 1 rainfall days, it receives 4mm (0.16") of precipitation. In Costa Calma, during the entire year, the rain falls for 19 days and collects up to 93mm (3.66") of precipitation.

Sea temperature

September is the month with the warmest seawater in Costa Calma, with an average sea temperature of 23°C (73.4°F).
Note: For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23°C (73.4°F).

Daylight

In September, the average length of the day in Costa Calma is 12.3h.

Sunshine

In Costa Calma, the average sunshine in September is 8h.

UV index

In Costa Calma, the average daily maximum UV index is 9. A UV Index of 8 to 10 symbolizes a very high threat to health from the exposure to the Sun's UV rays for the ordinary person.
Note: In September, the average maximum UV index of 9 translate into the following recommendations:
Take extra precautions. Fair-skinned individuals may get burned in less than 10 minutes. Seek shade and minimize exposure to direct Sun in a period between 10 a.m. and 4 p.m. when UV radiation is most intense; keep in mind that shade structures like parasols or canopies do not provide perfect sun protection. 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. Prolonged stay under the direct sun should be avoided as much as possible, especially if a person burns easily. Sunscreen with a minimum 30 sun protection factor should always be used. Caution! The reflection of sand and water significantly increases the intensity of the Sun's UV radiation.

What is the warmest month in Costa Calma?

July through September, with an average high-temperature of 27°C (80.6°F), are warmest months in Costa Calma, Spain.

What is the temperature in September in Costa Calma?

In September, the average high-temperature is 27°C (80.6°F), and the average low-temperature is 20°C (68°F).

When does it start to rain in Costa Calma?

September is the first month it rains in Costa Calma. Throughout September, in the average 1 rainfall days, it receives 4mm (0.16") of precipitation.

What is the month with the warmest sea water in Costa Calma?

The month with the warmest seawater in Costa Calma is September, with an average sea temperature of 23°C (73.4°F).

How warm is the water in September in Costa Calma?

In Costa Calma, the average seawater temperature in September is 23°C (73.4°F). For individuals prone to feeling cold, swimming in 23°C (73.4°F) is still regarded as intolerable. A wetsuit is not a necessity, but sunshine, wind, and air temperature are essential factors for relishing swimming at 23°C (73.4°F).

How many hours of daylight does Costa Calma have in September?

In September, the average length of the day is 12.3h.

How many hours of sunshine does Costa Calma have in September?

In September, the average sunshine in Costa Calma, Spain, is 8h.

How high is the UV index in September in Costa Calma?

In Costa Calma, Spain, the average daily maximum UV index in September is 9. A UV Index reading of 8 to 10 represents a very high health vulnerability from unsafe exposure to the Sun's UV rays.
Average temperature in September - Costa Calma, Spain
  • Average high temperature in September: 27°C

The 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 September: 20°C

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 September - Costa Calma, Spain
  • Average rainfall in September: 4mm

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 September - Costa Calma, Spain
  • Average rainfall days in September: 1 days

Months with the highest number of rainy days are January, February, November and December (3 days).
Months with the least rainy days are June, July and August (0 days).

Average sea temperature in September - Costa Calma, Spain
  • Average sea temperature in September: 23°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 September / Average sunshine in September - Costa Calma, Spain
  • Average daylight in September: 12.3h

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

  • Average sunshine in September: 8h

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 September - Costa Calma, Spain
  • Average UV index in September: 9

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).