Contents
- Weather in September
- Frequently asked questions
- Average temperature in September
- Average pressure in September
- Average wind speed in September
- Average humidity in September
- Average rainfall in September
- Average rainfall days in September
- Average snowfall in September
- Average snowfall days in September
- Average daylight in September
- Average sunshine in September
- Average sunshine days in September
- Average UV index in September
- Average cloud cover in September
- Average visibility in September
Weather in September
Temperature
September's arrival subtly correlates with a reduction in the average high-temperature, down from a moderately hot 24.6°C (76.3°F) in August to a comfortable 19.8°C (67.6°F). Throughout the nights in September, an average low-temperature of 10.5°C (50.9°F) is noted.Humidity
The average relative humidity in September is 75%.Rainfall
The month with the least rainfall in Idstein is September, when the rain falls for 11 days and typically collects 26mm (1.02") of precipitation.Snowfall
In Idstein, snow does not fall in June through September.Daylight
In Idstein, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 06:42 and sunset at 20:11. On the last day of September, in Idstein, sunrise is at 07:26 and sunset at 19:07 CEST.
Sunshine
In Idstein, the average sunshine in September is 8.8h.UV index
In Idstein, the average daily maximum UV index in September is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What are September temperatures in Idstein?
What is the average humidity in September in Idstein?
What is the driest month in Idstein?
How many days does it rain in September in Idstein?
When it does not snow in Idstein?
Does it snow in Idstein in September?
What is the average length of the day in September in Idstein?
When is the sunrise / sunset in September in Idstein?
How long on average sun shines in September in Idstein?
What is the UV index reading in September in Idstein?
Average temperature in September
Idstein, Germany
- Average high temperature in September: 19.8°C
The warmest month (with the highest average high temperature) is July (24.8°C).
The month with the lowest average high temperature is January (3.3°C).
- Average low temperature in September: 10.5°C
The month with the highest average low temperature is August (14.1°C).
The coldest month (with the lowest average low temperature) is January (-1.1°C).
Average pressure in September
Idstein, Germany
- Average pressure in September: 1018mbar
The month with the highest atmospheric pressure is December (1018.1mbar).
The month with the lowest atmospheric pressure is November (1014.5mbar).
Average wind speed in September
Idstein, Germany
- Average wind speed in September: 8.9km/h
The windiest month (with the highest average wind speed) is February (12.5km/h).
The calmest month (with the lowest average wind speed) is August (8.6km/h).
Average humidity in September
Idstein, Germany
- Average humidity in September: 75%
The months with the highest relative humidity are January and December (88%).
The months with the lowest relative humidity are July and August (69%).
Average rainfall in September
Idstein, Germany
- Average rainfall in September: 26mm
The wettest month (with the highest rainfall) is May (48mm).
The driest month (with the least rainfall) is September (26mm).
Average rainfall days in September
Idstein, Germany
- Average rainfall days in September: 11 days
The month with the highest number of rainy days is July (16.3 days).
The month with the least rainy days is February (9 days).
Average snowfall in September
Idstein, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is December (118mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Idstein, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is December (11.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Idstein, Germany
- Average daylight in September: 12h and 4min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in September: 8h and 5min
The month with the most sunshine is July (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 36min).
Average sunshine days in September
Idstein, Germany
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is April (16.6 days).
The month with the least sunshine days is June (11.1 days).
Average UV index in September
Idstein, Germany
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in September
Idstein, Germany
- Average cloud cover in September: 37
The month with the most cloud cover is December (Cloud cover 64).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Idstein, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August and September (9km).
The months with the lowest visibility are January, February, October, November and December (8km).
Idstein, Germany
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