September weather forecast
Portopetro, Spain

The first month of the autumn, September, is still a warm month in Portopetro, Spain, with temperature in the range of an average low of 17°C (62.6°F) and an average high of 26°C (78.8°F).

Temperature

As August makes way for September, Portopetro's average high-temperature eases from a moderately hot 29°C (84.2°F) to a still warm 26°C (78.8°F). Throughout September, an average low-temperature of 17°C (62.6°F) is experienced.

Rainfall

In September, in Portopetro, the rain falls for 7 days. Throughout September, 59mm (2.32") of precipitation is accumulated. In Portopetro, during the entire year, the rain falls for 121 days and collects up to 637mm (25.08") of precipitation.

Sea temperature

In September, the average sea temperature in Portopetro is 24°C (75.2°F).
Note: Consideration of an individual's cold resistance, combined with conditions like sunshine, wind, and temperature, suggests that swimming in 24°C (75.2°F) water can be delightful. (Olympic swimming is usually in 25°C (77°F) to 28°C (82.4°F) water.)

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 07:16 and sunset at 20:17. On the last day of September, in Portopetro, sunrise is at 07:42 and sunset at 19:31 CEST.

Sunshine

In Portopetro, the average sunshine in September is 8h.

UV index

In Portopetro, the average daily maximum UV index in September is 6. A UV Index estimate of 6 to 7 represents a high health risk from unsafe exposure to UV radiation for the average person.
Note: A daily maximum UV index of 6 in September translates into the following instructions:
Use measures and accept sun safety conventions. Guarding against skin and eye trauma is of high priority. 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. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Caution! Sand and water surfaces escalate the UV intensity from the Sun.