Sant Francesc de Formentera Weather in September

The climate in Sant Francesc de Formentera during September can be summarized as hot, humid and reasonably dry.

September is in the fall / autumn in Sant Francesc de Formentera and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a muggy 28°C (82°F), whilst at night 19°C (67°F) is normal.

On average September is the 4th wettest month of the year in Sant Francesc de Formentera with around 41mm 1.6 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 6 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.8 hours of sunshine per day.

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Sant Francesc de Formentera in September 2025.