The climate in Guissény during September can be summarized as mild and a little damp.
September is in the fall / autumn in Guissény 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||18.6°C 65.5°F|
|Nightly temperature||11.8°C 53.2°F|
|Average temperature||15.2°C 59.4°F|
|Daily sunshine||6.1 hrs|
|Avg rainfall||85 mm 3.3 ins|
|Rainy days||15 days|
|Sea temperature||16.8°C 62.2°F|
|Windspeed||15.5kph 10 mph|
On average September is the 6th driest month of the year in Guissény with around 85mm 3.3 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 15 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.1 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 Guissény in September 2023.
|Hottest month:||July||20.1°C 68.2°F|
|Driest month:||July||49mm 1.9ins|
|Coldest month:||January||9°C 48.2°F|
|Wettest month:||December||134mm 5.3ins|