September weather forecastAltenberg, Germany
September
Weather in September
The first month of the autumn, September, is still a comfortable month in Altenberg, Germany, with an average temperature ranging between max 18.4°C (65.1°F) and min 9.5°C (49.1°F).Temperature
In Altenberg, entering September brings a temperature decrement, reducing from August's warm 23.7°C (74.7°F) to a refreshing 18.4°C (65.1°F). During September, the temperature tends to dip to an average of 9.5°C (49.1°F) at night.Humidity
In Altenberg, Germany, the average relative humidity in September is 76%.Rainfall
In Altenberg, during September, the rain falls for 13.5 days and regularly aggregates up to 31mm (1.22") of precipitation. Throughout the year, in Altenberg, there are 152.7 rainfall days, and 494mm (19.45") of precipitation is accumulated.Snowfall
June through September are months without snowfall in Altenberg.Daylight
In September, the average length of the day is 12h and 38min.On the first day of the month, sunrise is at 06:19 and sunset at 19:49. On the last day of September, sunrise is at 07:04 and sunset at 18:45 CEST.
Sunshine
In September, the average sunshine in Altenberg is 9h.UV index
The average daily maximum UV index in September in Altenberg is 4. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for the ordinary person.Note: A maximum UV index of 4 in September translates into the following recommendations:
Be mindful. Those with pale skin might receive burns in fewer than 30 minutes. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Altenberg, Germany
- Average high temperature in September: 18.4°C
The warmest month (with the highest average high temperature) is August (23.7°C).
The month with the lowest average high temperature is January (0.8°C).
- Average low temperature in September: 9.5°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (-3.8°C).
Average pressure in September
Altenberg, Germany
- Average pressure in September: 1017.7mbar
The month with the highest atmospheric pressure is October (1018mbar).
The month with the lowest atmospheric pressure is July (1014.9mbar).
Average wind speed in September
Altenberg, Germany
- Average wind speed in September: 9.5km/h
The windiest month (with the highest average wind speed) is December (13.7km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in September
Altenberg, Germany
- Average humidity in September: 76%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is August (71%).
Average rainfall in September
Altenberg, Germany
- Average rainfall in September: 31mm
The wettest month (with the highest rainfall) is August (71mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in September
Altenberg, Germany
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is July (22 days).
The month with the least rainy days is February (4.6 days).
Average snowfall in September
Altenberg, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is December (195mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Altenberg, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (15.4 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Altenberg, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
- Average sunshine in September: 9h and 0min
The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is January (Average sunshine: 3h and 54min).
Average sunshine days in September
Altenberg, Germany
- Average sunshine days in September: 14.5 days
The month with the most sunshine days is October (15.9 days).
The month with the least sunshine days is July (7.3 days).
Average UV index in September
Altenberg, 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
Altenberg, Germany
- Average cloud cover in September: 37
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 33).
Average visibility in September
Altenberg, Germany
- Average visibility in September: 9km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The month with the lowest visibility is January (7km).
