Alella Weather in September

September in Alella averages 25°C (77°F) during the day and 18°C (64°F) at night. Quite a bit of rainfall is typical this month, with around 86 mm (3.4 in) on average. An umbrella is a good idea.

Rainfall in Alella in September

Climate statistics over the past 30 years suggest around 9 days of rain, with 86 mm (3.4 in) average for the month. When showers do arrive, they tend to be on the heavier side. Worth being prepared even if rain days are not that numerous.

Temperature in Alella in September

Alella in September has excellent weather. Days reach 25°C (77°F) and nights cool to 18°C (64°F). September is known for being in the summer season. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 18°C (64°F), evenings can feel noticeably cooler than the daytime. An extra layer is a good idea, though the cool air makes for a good night's sleep.

Sunshine in Alella in September

With approximately 218 hours of sunshine, the days are filled with clear skies. It makes it a perfect month for being outside.

Wind Speed in Alella in September

Average wind conditions reach 2 m/s (4 knots) in September. This creates comfortable weather with light winds that gently move vegetation. Keep in mind this is an average. Daily conditions range from near-calm to more noticeable wind.

Average water temperature in September

The water is 22°C (72°F) this month, warm enough that getting in requires no effort at all. Good conditions for swimming, snorkeling, or just floating around.

If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Alella.