The climate in Saint-Valery-sur-Somme during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Saint-Valery-sur-Somme and is typically the 3rd warmest month of the year. Daytime maximum temperatures average around 19°C (66°F), whilst at night 12°C (53°F) is normal.
|Daytime temperature||19°C 66.1°F|
|Nightly temperature||11.5°C 52.6°F|
|Average temperature||15.2°C 59.4°F|
|Daily sunshine||6 hrs|
|Avg rainfall||65 mm 2.6 ins|
|Rainy days||13 days|
|Sea temperature||17.4°C 63.3°F|
|Windspeed||14.4kph 9 mph|
On average September is the 4th wettest month of the year in Saint-Valery-sur-Somme with around 65mm 2.6 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 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 Saint-Valery-sur-Somme in September 2022.
|Hottest month:||August||21°C 69.8°F|
|Driest month:||April||46mm 1.8ins|
|Coldest month:||January||6.4°C 43.5°F|
|Wettest month:||November||84mm 3.3ins|