September weather forecastAltenriet, Germany
September
Weather in September
September, the first month of the autumn in Altenriet, is still a refreshing month, with an average temperature fluctuating between 8.8°C (47.8°F) and 18.5°C (65.3°F).Temperature
With the onset of September, Altenriet's average high-temperature slightly adjusts, moderately receding from August's pleasant 22.9°C (73.2°F) to a refreshing 18.5°C (65.3°F). The average low-temperature during September nights is a frosty 8.8°C (47.8°F).Humidity
In Altenriet, the average relative humidity in September is 81%.Rainfall
In September, in Altenriet, the rain falls for 13.5 days. Throughout September, 36mm (1.42") of precipitation is accumulated. Throughout the year, in Altenriet, there are 175.3 rainfall days, and 612mm (24.09") of precipitation is accumulated.Snowfall
In Altenriet, snow does not fall in June through September.Daylight
In Altenriet, the average length of the day in September is 12h and 35min.On the first day of the month, sunrise is at 06:41 and sunset at 20:04. On the last day of September, in Altenriet, sunrise is at 07:21 and sunset at 19:04 CEST.
Sunshine
In Altenriet, Germany, the average sunshine in September is 8.6h.UV index
In Altenriet, the average daily maximum UV index in September is 3. A UV Index estimate of 3 to 5 represents a moderate health risk from unsafe exposure to UV radiation for the ordinary person.Note: A maximum high UV index of 3 in September translates into the following recommendations:
Take necessary precautions - Protection from skin and eye injury is mandatory. When the Sun's UV radiation is most intense during midday, it's best to find shade and limit exposure. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Altenriet, Germany
- Average high temperature in September: 18.5°C
The warmest month (with the highest average high temperature) is August (22.9°C).
The month with the lowest average high temperature is January (2.4°C).
- Average low temperature in September: 8.8°C
The month with the highest average low temperature is August (12.5°C).
The coldest month (with the lowest average low temperature) is February (-2.8°C).
Average pressure in September
Altenriet, Germany
- Average pressure in September: 1018.6mbar
The month with the highest atmospheric pressure is December (1020.1mbar).
The month with the lowest atmospheric pressure is November (1015.5mbar).
Average wind speed in September
Altenriet, Germany
- Average wind speed in September: 8.2km/h
The windiest month (with the highest average wind speed) is December (11.9km/h).
The calmest month (with the lowest average wind speed) is August (8km/h).
Average humidity in September
Altenriet, Germany
- Average humidity in September: 81%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Altenriet, Germany
- Average rainfall in September: 36mm
The wettest month (with the highest rainfall) is May (82mm).
The driest month (with the least rainfall) is March (32mm).
Average rainfall days in September
Altenriet, Germany
- Average rainfall days in September: 13.5 days
The month with the highest number of rainy days is May (22.2 days).
The month with the least rainy days is February (7.9 days).
Average snowfall in September
Altenriet, Germany
- Average snowfall in September: 0mm
The month with the highest snowfall is January (85mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Altenriet, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is February (8.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Altenriet, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 6min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 36min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is January (Average sunshine: 4h and 0min).
Average sunshine days in September
Altenriet, Germany
- Average sunshine days in September: 13.9 days
The month with the most sunshine days is November (17.4 days).
The month with the least sunshine days is June (6.7 days).
Average UV index in September
Altenriet, Germany
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, October, November and December (UV index 2).
Average cloud cover in September
Altenriet, Germany
- Average cloud cover in September: 39
The month with the most cloud cover is January (Cloud cover 61).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Altenriet, Germany
- Average visibility in September: 8km
The months with the highest visibility are April, June, July and August (9km).
The month with the lowest visibility is January (7km).
