| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Average Daylight per day
|Sun altitude at solar noon on the 21st day.
- The average temperature in Hel in September is mild at 13.7 °C (56.66 °F).
- Afternoons can be very mild with average high temperatures reaching 17.3 °C (63.1 °F).
- Overnight temperatures are generally quite mild with an average low of 10.8 °C (51.4 °F).
- In September the variation/ range of daily mean temperatures is 6.5 °C (11.7 °F).
- The weather in September is marginally dry. Only 61mm (2.4in) of water falls during.
- The shortest day is 11:34 long and the longest day is 13:45 long with an average length of 12:40.
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Weather Trend Graph for September in Hel, Poland
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