September weather forecastMattsee, Austria
September
Weather in September
September, the first month of the autumn in Mattsee, is also an enjoyable month, with an average temperature varying between 8.2°C (46.8°F) and 18.2°C (64.8°F).Temperature
The transition into September is accompanied by a temperature decrease, with the average high-temperature shifting from a moderately hot 23.2°C (73.8°F) in August to a refreshing 18.2°C (64.8°F). Mattsee observes an average nighttime low-temperature of 8.2°C (46.8°F) during the month of September.Humidity
In September, the average relative humidity is 84%.Rainfall
In Mattsee, in September, during 15.8 rainfall days, 71mm (2.8") of precipitation is typically accumulated. In Mattsee, during the entire year, the rain falls for 186 days and collects up to 1028mm (40.47") of precipitation.Snowfall
In Mattsee, snow does not fall in June through September.Daylight
The average length of the day in September is 12h and 34min.On the first day of September, sunrise is at 06:26 and sunset at 19:48. On the last day of the month, sunrise is at 07:06 and sunset at 18:48 CEST.
Sunshine
The average sunshine in September is 8h.UV index
The average daily maximum UV index in September in Mattsee is 4. A UV Index reading of 3 to 5 represents a medium health hazard from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 4 in September translates into this advice:
Take precautions - Protection against sunburn is recommended. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. To cut down UV radiation exposure by about half, sport a wide-brim hat.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Mattsee, Austria
- Average high temperature in September: 18.2°C
The warmest months (with the highest average high temperature) are July and August (23.2°C).
The month with the lowest average high temperature is January (2.1°C).
- Average low temperature in September: 8.2°C
The month with the highest average low temperature is August (12.3°C).
The coldest months (with the lowest average low temperature) are January and February (-3.8°C).
Average pressure in September
Mattsee, Austria
- Average pressure in September: 1018.7mbar
The month with the highest atmospheric pressure is December (1020.4mbar).
The months with the lowest atmospheric pressure are April and May (1015.7mbar).
Average wind speed in September
Mattsee, Austria
- Average wind speed in September: 7km/h
The windiest month (with the highest average wind speed) is March (9.8km/h).
The calmest month (with the lowest average wind speed) is August (6.8km/h).
Average humidity in September
Mattsee, Austria
- Average humidity in September: 84%
The month with the highest relative humidity is January (89%).
The month with the lowest relative humidity is April (77%).
Average rainfall in September
Mattsee, Austria
- Average rainfall in September: 71mm
The wettest month (with the highest rainfall) is May (125mm).
The driest month (with the least rainfall) is November (40mm).
Average rainfall days in September
Mattsee, Austria
- Average rainfall days in September: 15.8 days
The month with the highest number of rainy days is May (23.2 days).
The month with the least rainy days is February (8.7 days).
Average snowfall in September
Mattsee, Austria
- Average snowfall in September: 0mm
The month with the highest snowfall is January (409mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in September
Mattsee, Austria
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (13 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in September /
Average sunshine in September
Mattsee, Austria
- 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 30min).
- Average sunshine in September: 8h and 0min
The month with the most sunshine is August (Average sunshine: 9h and 48min).
The month with the least sunshine is February (Average sunshine: 3h and 48min).
Average sunshine days in September
Mattsee, Austria
- Average sunshine days in September: 11.2 days
The month with the most sunshine days is November (15.9 days).
The month with the least sunshine days is June (4.9 days).
Average UV index in September
Mattsee, Austria
- Average UV index in September: 4
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
Mattsee, Austria
- Average cloud cover in September: 42
The month with the most cloud cover is February (Cloud cover 59).
The month with the least cloud cover is August (Cloud cover 35).
Average visibility in September
Mattsee, Austria
- Average visibility in September: 8km
The months with the highest visibility are April, June and July (9km).
The months with the lowest visibility are January and February (7km).
