Weather in September in Basel

< September >
	Normal Max/ High Temperature	22°C (72°F)
	Average Temperature	15°C (59°F)
	Min/ Low Temperature	10°C (50°F)
	Normal Precipitation	79mm (3.1in)
	Number of Wet Days (probability of rain on a day)	12 (40%)
	Average Sunlight per day	05h 09'
	Average Daylight per day	12h 30'
	Sunny (Cloudy) Daylight Hours	42% (58%)
	Sun altitude at solar noon on the 21st day.	43.1°

The average temperature in Basel in September is mild at 15 °C (59 °F).
Afternoons can be really warm with average high temperatures reaching 22 °C (71.6 °F).
Overnight temperatures are generally quite mild with an average low of 10 °C (50 °F).
In September the mean diurnal temperature range/ variation is 12 °C (21.6 °F).
Precipitation averages for September are moderate with 79mm (3.1 in) recorded across 12 days.
In September the skies in Basel are slightly fair with an average of a mediocre 5h 09' of magnificent solar radiation per day.
The shortest day is 11h 39' long and the longest day is 13h 21' long with an average length of 12h 30'.
There are approximately 7h 09' per day when the sun is occluded by cloud, haze, fog etc.
It is sunny approximately 41.9% of daylight hours and cloudy 58.1% of daylight hours.

Weather Trend Graph for September in Basel, Switzerland

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