| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Ertholmene, Christiansø in September is mild at 14 °C (57.2 °F).
- Afternoons can be very mild with average high temperatures reaching 17 °C (62.6 °F).
- Overnight temperatures are generally quite mild with an average low of 11 °C (51.8 °F).
- In September there is a range/ variation of mean diurnal temperatures of 6 °C (10.8 °F).
- The weather in September is slightly dry. Only 50mm (2in) of fluid falls.
- In September the blue above Ertholmene, Christiansø is fine with an average of a detectable 6:34 of radiant sunshine per day.
- The shortest day is 11:35 long and the longest day is 13:49 long with an average length of 12:42.
- There are approximately 5:50 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 53% of daylight hours and cloudy 47% of daylight hours.
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Weather Trend Graph for September in Ertholmene, Christiansø, Denmark
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