September weather forecastHeist, Germany
September
Weather in September
The first month of the autumn, September, is still a refreshing month in Heist, Germany, with an average temperature ranging between min 10.7°C (51.3°F) and max 18.3°C (64.9°F).Temperature
As September arrives, Heist's weather displays a minor decrease in high-temperatures, transitioning from August's pleasant 22.3°C (72.1°F) to a comfortable 18.3°C (64.9°F). Throughout the month of September, the average temperature dips to a fresh 10.7°C (51.3°F) at night.Humidity
The average relative humidity in September is 82%.Rainfall
In Heist, Germany, in September, it is raining for 9.5 days, with typically 14mm (0.55") of accumulated precipitation. In Heist, during the entire year, the rain falls for 134 days and collects up to 228mm (8.98") of precipitation.Snowfall
May through October are months without snowfall in Heist.Daylight
In Heist, Germany, the average length of the day in September is 12h and 41min.On the first day of the month, sunrise is at 06:31 and sunset at 20:11. On the last day of September, in Heist, Germany, sunrise is at 07:22 and sunset at 19:00 CEST.
Sunshine
In September, the average sunshine is 7.8h.UV index
The average daily maximum UV index in September is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from exposure to the Sun's UV rays for the ordinary person.Note: In September, a daily UV index of 4 turns into the following recommendations:
Prioritize safety - The need to safeguard skin and eyes from harm is emphasized. To guard against the harmful effects of the Sun, minimize exposure during midday. On days when the sun blazes, arm yourself with sunglasses that block UVA and UVB radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Heist, Germany
- Average high temperature in September: 18.3°C
The warmest month (with the highest average high temperature) is August (22.3°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 10.7°C
The month with the highest average low temperature is August (13.7°C).
The coldest months (with the lowest average low temperature) are January and February (-0.5°C).
Average pressure in September
Heist, Germany
- Average pressure in September: 1016.3mbar
The month with the highest atmospheric pressure is September (1016.3mbar).
The month with the lowest atmospheric pressure is November (1011.8mbar).
Average wind speed in September
Heist, Germany
- Average wind speed in September: 12.3km/h
The windiest month (with the highest average wind speed) is December (17.5km/h).
The calmest month (with the lowest average wind speed) is August (11.8km/h).
Average humidity in September
Heist, Germany
- Average humidity in September: 82%
The month with the highest relative humidity is December (90%).
The month with the lowest relative humidity is April (76%).
Average rainfall in September
Heist, Germany
- Average rainfall in September: 14mm
The wettest month (with the highest rainfall) is July (29mm).
The driest month (with the least rainfall) is April (11mm).
Average rainfall days in September
Heist, Germany
- Average rainfall days in September: 9.5 days
The month with the highest number of rainy days is May (15.3 days).
The month with the least rainy days is February (8.9 days).
Average snowfall in September
Heist, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is February (17mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Heist, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (5.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in September /
Average sunshine in September
Heist, Germany
- Average daylight in September: 12h and 42min
The month with the longest days is June (Average daylight: 17h and 0min).
The month with the shortest days is December (Average daylight: 7h and 36min).
- Average sunshine in September: 7h and 48min
The month with the most sunshine is August (Average sunshine: 9h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 12min).
Average sunshine days in September
Heist, Germany
- Average sunshine days in September: 16.5 days
The month with the most sunshine days is October (19.7 days).
The month with the least sunshine days is June (11.5 days).
Average UV index in September
Heist, Germany
- Average UV index in September: 4
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is January (UV index 1).
Average cloud cover in September
Heist, Germany
- Average cloud cover in September: 47
The month with the most cloud cover is December (Cloud cover 70).
The month with the least cloud cover is August (Cloud cover 41).
Average visibility in September
Heist, Germany
- Average visibility in September: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and December (9km).
The months with the lowest visibility are January and November (8km).
