Castelló de la Plana Weather in September

The climate in Castelló de la Plana during September can be summarized as warm and reasonably dry.

September is in the fall / autumn in Castelló de la Plana and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around a comfortable 28°C (81°F), whilst at night 17°C (63°F) is normal.

On average September is the 2nd wettest month of the year in Castelló de la Plana with around 59mm 2.3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.

On the flip side this corresponds to an average of 8.4 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 Castelló de la Plana in September 2025.