The climate in Spiekeroog during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Spiekeroog and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 18°C (65°F), whilst at night 10°C (50°F) is normal.
|Daytime temperature||18.1°C 64.5°F|
|Nightly temperature||10°C 49.9°F|
|Average temperature||14°C 57.2°F|
|Daily sunshine||4.8 hrs|
|Avg rainfall||76 mm 3 ins|
|Rainy days||17 days|
|Sea temperature||17°C 62.6°F|
|Windspeed||16.2kph 10 mph|
On average September is the 4th wettest month of the year in Spiekeroog with around 76mm 3 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 17 days, although this may vary considerably.
On the flip side this corresponds to an average of 4.8 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 Spiekeroog in September 2021.
|Hottest month:||August||21.1°C 70°F|
|Driest month:||February||45mm 1.8ins|
|Coldest month:||January||3.3°C 37.9°F|
|Wettest month:||August||84mm 3.3ins|