September weather forecastRoggenburg, Germany
September
Weather in September
September, the first month of the autumn in Roggenburg, is still a comfortable month, with an average temperature ranging between max 18.1°C (64.6°F) and min 8.5°C (47.3°F).Temperature
In September, the meteorological conditions change slightly, with the average high-temperature moving from an agreeable 22.8°C (73°F) in August to a refreshing 18.1°C (64.6°F). In Roggenburg, the expected average low-temperature for September is a frosty 8.5°C (47.3°F).Humidity
The average relative humidity in September in Roggenburg is 83%.Rainfall
In September, in Roggenburg, the rain falls for 15 days. Throughout September, 48mm (1.89") of precipitation is accumulated. In Roggenburg, during the entire year, the rain falls for 178.1 days and collects up to 685mm (26.97") of precipitation.Snowfall
June through September are months without snowfall in Roggenburg.Daylight
In September, the average length of the day is 12h and 35min.On the first day of September, sunrise is at 06:37 and sunset at 20:00. On the last day of the month, sunrise is at 07:17 and sunset at 19:00 CEST.
Sunshine
In Roggenburg, the average sunshine in September is 8.6h.UV index
In Roggenburg, the average daily maximum UV index in September is 3. A UV Index of 3 to 5 symbolizes a medium vulnerability from exposure to the Sun's UV radiation for ordinary individuals.Note: The maximum UV index, 3 during September, leads to the following recommendations:
Ensure safety - Recommendations to avert sunburn are presented. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Roggenburg, Germany
- Average high temperature in September: 18.1°C
The warmest month (with the highest average high temperature) is August (22.8°C).
The month with the lowest average high temperature is January (1.9°C).
- Average low temperature in September: 8.5°C
The month with the highest average low temperature is August (12.4°C).
The coldest month (with the lowest average low temperature) is February (-3.3°C).
Average pressure in September
Roggenburg, Germany
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is December (1020.2mbar).
The month with the lowest atmospheric pressure is November (1015.6mbar).
Average wind speed in September
Roggenburg, Germany
- Average wind speed in September: 8.8km/h
The windiest month (with the highest average wind speed) is December (13.4km/h).
The calmest month (with the lowest average wind speed) is August (8.6km/h).
Average humidity in September
Roggenburg, Germany
- Average humidity in September: 83%
The month with the highest relative humidity is January (90%).
The month with the lowest relative humidity is April (78%).
Average rainfall in September
Roggenburg, Germany
- Average rainfall in September: 48mm
The wettest month (with the highest rainfall) is August (95mm).
The driest month (with the least rainfall) is February (33mm).
Average rainfall days in September
Roggenburg, Germany
- Average rainfall days in September: 15 days
The month with the highest number of rainy days is May (22.1 days).
The month with the least rainy days is February (7 days).
Average snowfall in September
Roggenburg, Germany
- Average snowfall in September: 0mm
The months with the highest snowfall are January and December (87mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Roggenburg, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (10.2 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Roggenburg, Germany
- Average daylight in September: 12h and 36min
The month with the longest days is June (Average daylight: 16h and 0min).
The month with the shortest days is December (Average daylight: 8h and 24min).
- Average sunshine in September: 8h and 36min
The months with the most sunshine are July and August (Average sunshine: 9h and 42min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in September
Roggenburg, Germany
- Average sunshine days in September: 12.8 days
The months with the most sunshine days are October and November (15.9 days).
The month with the least sunshine days is May (7 days).
Average UV index in September
Roggenburg, Germany
- Average UV index in September: 3
The months with the highest UV index are June and July (UV index 5).
The month with the lowest UV index is November (UV index 1).
Average cloud cover in September
Roggenburg, Germany
- Average cloud cover in September: 41
The month with the most cloud cover is January (Cloud cover 65).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in September
Roggenburg, Germany
- Average visibility in September: 8km
The months with the highest visibility are April, June, July and August (9km).
The months with the lowest visibility are January and February (7km).
