September weather forecast
Sant Joan d'Alacant, Spain

The first month of the autumn, September, is still a warm month in Sant Joan d'Alacant, Spain, with an average temperature varying between 28°C (82.4°F) and 17°C (62.6°F).

Temperature

September's arrival aligns with a minor decrease in average high-temperatures, from August's hot 31°C (87.8°F) to a warm 28°C (82.4°F). During September, Sant Joan d'Alacant's temperature falls to a steady low-temperature average of 17°C (62.6°F).

Rainfall

In Sant Joan d'Alacant, in September, during 6 rainfall days, 37mm (1.46") of precipitation is typically accumulated. In Sant Joan d'Alacant, during the entire year, the rain falls for 105 days and collects up to 371mm (14.61") of precipitation.

Sea temperature

In Sant Joan d'Alacant, Spain, in September, the average water temperature is 24°C (75.2°F).
Note: Factor in your tolerance to cold, the sunshine, the wind, and the air's warmth, and a swim in 24°C (75.2°F) might be tempting. It is interesting to note that Olympians compete in 25°C (77°F) to 28°C (82.4°F) water temperatures.

Daylight

The average length of the day in September is 12h and 26min.
On the first day of the month, sunrise is at 07:31 and sunset at 20:31. On the last day of September, in Sant Joan d'Alacant, sunrise is at 07:57 and sunset at 19:46 CEST.

Sunshine

In September, the average sunshine is 8h.

UV index

In September, the average daily maximum UV index in Sant Joan d'Alacant, Spain, is 7. A UV Index of 6 to 7 symbolizes a high health vulnerability from exposure to the Sun's UV rays for the ordinary person.
Note: The UV index of 7 during September translates into the following guidance:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. Avoid direct Sun exposure and seek shade from 10 a.m. to 4 p.m., the period of highest UV radiation. Remember, however, that not all shade structures offer full protection. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Alert! Sand and water increase UV exposure due to their reflective properties.