Castelldefels Weather in September

September in Castelldefels sees daytime temperatures around 25°C (77°F) and lows of 19°C (66°F) at night. With around 94 mm (3.7 in) of rainfall expected, it's worth packing a rain jacket.

Rainfall in Castelldefels in September

Based on our climate data of the past 30 years, about 9 days of rain are anticipated, with 94 mm (3.7 in) on average. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.

Temperature in Castelldefels in September

September is a good time to be in Castelldefels. Days are perfect, reaching 25°C (77°F), with nights around 19°C (66°F). During September, the summer season is in full swing. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. With overnight lows of 19°C (66°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 Castelldefels in September

Expect sunny days throughout the month, with an estimated 218 hours of sunshine. This makes it a pleasant time to visit Castelldefels.

Wind Speed in Castelldefels 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

At 22°C (72°F), the water is warm and comfortable for swimming. Most people find this temperature ideal for spending longer periods in the water.

So this is a great month to visit if you prefer dry days with pleasant temperatures.

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• January
• February
• March
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• May
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• October
• November
• December

For a detailed overview over the year and the best time to visit Spain, check out our Castelldefels's climate page.

Castelldefels Temperature in September

Min Temperature 19°C (66°F)  

Max Temperature 25°C (77°F)  

Water Temperature 22°C (72°F) *  

Chance of Rain 29%  

Precipitation 94 mm (3.7 in)  

Rainy days 9 days  

Humidity 74% *  

Windspeed 2 m/s (4 knots) *  

Sunshine 218 hours *  

Percentage Sunshine *  

* Data from: Barcelona, Spain (18 KM, 11 Miles).

What to Wear in Castelldefels in September

Warm but pleasant conditions in Castelldefels in September. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Expect heavy rainfall, so bring good rain protection and waterproof bags. Expect water temperatures of around 22°C (72°F), which is ideal for taking a refreshing dip. Bring swimwear and consider packing a towel for drying off. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.

What To Do in Castelldefels in September

We rated the following activities from 1 (least suitable) to 10 (best) to do.

Swimming

9/10

Cycling

7/10

Walking

7/10

Camping

8/10

Outdoor sports

7/10

Select a Month

Check the conditions for any month of the year.

• January
• February
• March
• April

• May
• June
• July
• August

• September
• October
• November
• December

For a detailed overview over the year and the best time to visit Spain, check out our Castelldefels's climate page.

More climate data for Castelldefels

Temperature Rainfall Sunshine Humidity Wind Speed Water Temp

See the full Castelldefels climate overview or explore weather in Spain.