Saint-Cast-le-Guildo Weather in September

What's the weather like in Saint-Cast-le-Guildo (Brittany) in September 2022?

The climate in Saint-Cast-le-Guildo during September can be summarized as mild and reasonably dry.

September is in the fall / autumn in Saint-Cast-le-Guildo and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 12°C (54°F) is normal.

Saint-Cast-le-Guildo weather averages (imperial / metric)
Daytime temperature 19.6°C 67.3°F
Nightly temperature 12.2°C 54°F
Average temperature 15.9°C 60.6°F
Daily sunshine 6.4 hrs
Avg rainfall 62 mm 2.4 ins
Rainy days 13 days
Sea temperature 17°C 62.6°F
Humidity 80%
Windspeed 15.8kph 10 mph

On average September is the 6th driest month of the year in Saint-Cast-le-Guildo with around 62mm 2.4 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.4 hours of sunshine per day.

September temperatures in Saint-Cast-le-Guildo

Saint-Cast-le-Guildo average temperature in September

September rainfall

Saint-Cast-le-Guildo average rain in September

September hourly sunshine

Saint-Cast-le-Guildo average rain in September

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 Saint-Cast-le-Guildo in September 2022.

Other monthly averages

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Saint-Cast-le-Guildo weather stats

Saint-Cast-le-Guildo weather statistics
Hottest month: July 21.5°C 70.7°F
Driest month: July 40mm 1.6ins
Sunniest month: July 8.8hrs
Coldest month: January 8.2°C 46.8°F
Wettest month: November 96mm 3.8ins
Map showing location of Saint-Cast-le-Guildo (48.63028, -2.25777)

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