September weather forecastCosta Calma, Spain

September

Weather in September

September, the first month of the autumn in Costa Calma, is also a moderately hot month, with an average temperature fluctuating between 20°C (68°F) and 27°C (80.6°F).

Temperature

Costa Calma's temperatures tend to hit their maximum during July through September, with an average high-temperature of 27°C (80.6°F).

Rainfall

Months with rainfall in Costa Calma are January through May, September through December. September is the first month it rains. Throughout September, in the average 1 rainfall days, it receives 4mm (0.16") of precipitation. Throughout the year, there are 19 rainfall days, and 93mm (3.66") of precipitation is accumulated.

Sea temperature

September is the month with the warmest seawater, with an average sea temperature of 23°C (73.4°F).
Note: Individual cold sensitivities, influenced by sunshine, wind, and the ambient temperature, play a role in finding a swim in 23°C (73.4°F) water pleasant. (Olympic swimming events mandate water temperatures from 25°C (77°F) to 28°C (82.4°F).)

Daylight

In September, the average length of the day is 12h and 19min.
On the first day of the month, sunrise is at 07:35 and sunset at 20:17. On the last day of September, sunrise is at 07:49 and sunset at 19:43 WEST.

Sunshine

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

UV index

The average daily maximum UV index in September is 9. A UV Index estimate of 8 to 10 represents a very high threat to health from exposure to the Sun's UV rays for the average person.
Note: A maximum UV index of 9 in September translates into the following recommendations:
Always be cautious. Skin and eyes can be affected swiftly without protection. Avoid direct exposure to the Sun between 10 a.m. and 4 p.m., the peak period for UV radiation, noting that objects like parasols or canopies might not offer complete sun protection. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Limit direct sunlight exposure, particularly if you burn easily. It’s crucial to apply sunscreen with a minimum 30 SPF. Watch out! Reflections from sand and water can surge UV radiation exposure.

Updated: Jun 8, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

Costa Calma experiences its warmest period in July through September, averaging a high-temperature of 27°C (80.6°F).

September temperatures vary between a high-temperature of 27°C (80.6°F) and a low-temperature of 20°C (68°F).

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

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

In Costa Calma, the average seawater temperature in September is 23°C (73.4°F). A person's cold intolerance, with sunshine, wind, and air temperature, are essential factors for enjoying swimming in 23°C (73.4°F) water.

In September, the average day length is 12h and 19min.

On the first day of September, sunrise is at 07:35 and sunset at 20:17. On the last day of the month, sunrise is at 07:49 and sunset at 19:43 WEST.

In September, the average sunshine duration is 8h.

The average daily maximum UV index in September is 9. A UV Index value of 8 to 10 symbolizes a very high health threat from unsafe exposure to Sun's UV rays.

Today

Tomorrow

Long-term

Year J F M A M J J A September O N D

Aug

September

Oct

Average high temperature

27°C

25°C

Average low temperature

Average rainfall

Average rainfall days

Average sea temperature

Average daylight

Average sunshine

Average UV index

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).
The months with the lowest average high temperature are January, February and December (20°C).

Average low temperature in September: 20°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 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

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 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: 12h and 18min

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 September: 8h

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 September
Costa Calma, Spain

Average UV index in September: 9

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).