September weather forecastGrettstadt, Germany
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Grettstadt, Germany, with temperature in the range of an average low of 9.8°C (49.6°F) and an average high of 19.2°C (66.6°F).Temperature
With the onset of September, Grettstadt's average high-temperature slightly adjusts, moderately receding from August's moderately hot 24.1°C (75.4°F) to a refreshing 19.2°C (66.6°F). September witnesses an average nighttime temperature of 9.8°C (49.6°F).Humidity
In September, the average relative humidity in Grettstadt is 77%.Rainfall
In Grettstadt, in September, it is raining for 11.6 days, with typically 28mm (1.1") of accumulated precipitation. Throughout the year, there are 166.7 rainfall days, and 488mm (19.21") of precipitation is accumulated.Snowfall
In Grettstadt, Germany, snow does not fall in May through September.Daylight
In Grettstadt, the average length of the day in September is 12h and 37min.On the first day of the month, sunrise is at 06:34 and sunset at 20:02. On the last day of September, in Grettstadt, sunrise is at 07:18 and sunset at 18:59 CEST.
Sunshine
In Grettstadt, the average sunshine in September is 8.6h.UV index
The average daily maximum UV index in September in Grettstadt, Germany, is 4. A UV Index reading of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: The maximum daily UV index of 4 in September interprets into the following recommendations:
Guard yourself - Precautionary measures against sun damage are advocated. Considering the strength of solar radiation at midday, one should avoid direct Sun exposure. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Grettstadt, Germany
- Average high temperature in September: 19.2°C
The warmest month (with the highest average high temperature) is August (24.1°C).
The month with the lowest average high temperature is January (2.2°C).
- Average low temperature in September: 9.8°C
The month with the highest average low temperature is August (13.5°C).
The coldest month (with the lowest average low temperature) is January (-2°C).
Average pressure in September
Grettstadt, Germany
- Average pressure in September: 1018.2mbar
The month with the highest atmospheric pressure is December (1018.5mbar).
The month with the lowest atmospheric pressure is November (1014.9mbar).
Average wind speed in September
Grettstadt, Germany
- Average wind speed in September: 9.2km/h
The windiest month (with the highest average wind speed) is February (13.4km/h).
The calmest month (with the lowest average wind speed) is August (8.9km/h).
Average humidity in September
Grettstadt, Germany
- Average humidity in September: 77%
The months with the highest relative humidity are January and December (89%).
The months with the lowest relative humidity are April and August (72%).
Average rainfall in September
Grettstadt, Germany
- Average rainfall in September: 28mm
The wettest month (with the highest rainfall) is June (57mm).
The driest month (with the least rainfall) is April (26mm).
Average rainfall days in September
Grettstadt, Germany
- Average rainfall days in September: 11.6 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is February (10.7 days).
Average snowfall in September
Grettstadt, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (81mm).
The months with the least snowfall are May, June, July, August and September (0mm).
Average snowfall days in September
Grettstadt, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.5 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Grettstadt, Germany
- Average daylight in September: 12h and 36min
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 12min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 6min).
The month with the least sunshine is December (Average sunshine: 3h and 18min).
Average sunshine days in September
Grettstadt, Germany
- Average sunshine days in September: 15.7 days
The month with the most sunshine days is October (17.5 days).
The month with the least sunshine days is June (9.4 days).
Average UV index in September
Grettstadt, Germany
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Grettstadt, Germany
- Average cloud cover in September: 39
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Grettstadt, 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).
