September weather forecastSankt Thomas, Germany
September
Weather in September
September, the first month of the autumn in Sankt Thomas, is still a refreshing month, with an average temperature fluctuating between 8.9°C (48°F) and 18.6°C (65.5°F).Temperature
The shift from August to September includes a small decrease in the average high-temperature, from an agreeable 22.8°C (73°F) to a refreshing 18.6°C (65.5°F). In Sankt Thomas, an average low-temperature of 8.9°C (48°F) is recorded during September nights.Humidity
In September, the average relative humidity is 80%.Rainfall
The month with the least rainfall in Sankt Thomas is September, when the rain falls for 4.6 days and typically collects 5mm (0.2") of precipitation.Snowfall
June through September are months without snowfall in Sankt Thomas.Daylight
In Sankt Thomas, the average length of the day in September is 12h and 37min.On the first day of September, sunrise is at 06:49 and sunset at 20:17. On the last day of the month, sunrise is at 07:32 and sunset at 19:13 CEST.
Sunshine
In September, the average sunshine is 8.3h.UV index
In September, the average daily maximum UV index in Sankt Thomas is 3. A UV Index value of 3 to 5 symbolizes a medium health hazard from exposure to the Sun's UV rays for average individuals.Note: An average UV index of 3 in September transforms into this advice:
Prioritize safety - Recommendations to avert sunburn are shared. Midday Sun has the strongest UV rays, making it crucial to limit exposure and find shade. A hat with a broad brim is indispensable, filtering out up to half of UV rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Sankt Thomas, Germany
- Average high temperature in September: 18.6°C
The warmest month (with the highest average high temperature) is July (22.9°C).
The month with the lowest average high temperature is January (2.9°C).
- Average low temperature in September: 8.9°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is January (-1.3°C).
Average pressure in September
Sankt Thomas, Germany
- Average pressure in September: 1017.9mbar
The month with the highest atmospheric pressure is September (1017.9mbar).
The month with the lowest atmospheric pressure is November (1014mbar).
Average wind speed in September
Sankt Thomas, Germany
- Average wind speed in September: 9km/h
The windiest months (with the highest average wind speed) are February and December (12.7km/h).
The calmest month (with the lowest average wind speed) is August (8.7km/h).
Average humidity in September
Sankt Thomas, Germany
- Average humidity in September: 80%
The months with the highest relative humidity are January and December (90%).
The months with the lowest relative humidity are April, July and August (75%).
Average rainfall in September
Sankt Thomas, Germany
- Average rainfall in September: 5mm
The wettest month (with the highest rainfall) is August (13mm).
The driest month (with the least rainfall) is September (5mm).
Average rainfall days in September
Sankt Thomas, Germany
- Average rainfall days in September: 4.6 days
The month with the highest number of rainy days is May (7.7 days).
The month with the least rainy days is February (4.3 days).
Average snowfall in September
Sankt Thomas, Germany
- Average snowfall in September: 0mm
The months with the highest snowfall are February and December (12mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Sankt Thomas, Germany
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Sankt Thomas, 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 18min
The month with the most sunshine is July (Average sunshine: 10h and 0min).
The month with the least sunshine is December (Average sunshine: 3h and 24min).
Average sunshine days in September
Sankt Thomas, Germany
- Average sunshine days in September: 23 days
The month with the most sunshine days is March (23.3 days).
The month with the least sunshine days is December (19.5 days).
Average UV index in September
Sankt Thomas, 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, November and December (UV index 2).
Average cloud cover in September
Sankt Thomas, Germany
- Average cloud cover in September: 40
The month with the most cloud cover is December (Cloud cover 68).
The month with the least cloud cover is August (Cloud cover 36).
Average visibility in September
Sankt Thomas, Germany
- Average visibility in September: 8km
The months with the highest visibility are March, April and August (9km).
The months with the lowest visibility are January, November and December (7km).
