Flachau Weather in September
September in Flachau typically sees daytime highs of 15°C (59°F) and nighttime lows of 5°C (41°F). Rainfall is also possible this month, so it's worth packing an umbrella.
Rainfall in Flachau in September
Records from the past 30 years suggest around 14 days of rain, with 153 mm (6 in) average for the month. The rain this month tends to fall in heavier spells rather than light drizzle. When it rains, showers can be significant.
Temperature in Flachau in September
If you're visiting Flachau in September, expect highs of 15°C (59°F) and overnight lows around 5°C (41°F). Even when the weather is stable, mornings and evenings can still feel distinctly cool. Nights fall to 5°C (41°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Flachau in September
The month experiences a moderate amount of sunlight, with 161 hours of sunshine. This provides a nice balance between sunshine and clouds.Our weather planner can help you find worldwide destinations with pleasant weather during this period. August typically offers the best weather for Flachau.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Austria, check out our Flachau's climate page.
Flachau Temperature in September
Min Temperature
5°C (41°F)
Max Temperature
15°C (59°F)
Chance of Rain
47%
Precipitation
153 mm (6 in)
Rainy days
14 days
Humidity
73% *
Sunshine
161 hours *
Percentage Sunshine
*
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Flachau typically stay consistent throughout September, with daily highs averaging around 15°C (59°F). Nights are cold, with lows typically ranging from 6°C (43°F) to 9°C (48°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather for Flachau in September
Browse day-by-day weather records for Flachau spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Flachau historical weather extremes in September
Based on weather observations in Flachau between 1976 and 2025, these are the recorded extremes during September.
- Flachau recorded its highest September temperature of 30°C (86°F) on September 11, 2011.
- On September 14, 2024, Flachau saw its coldest September day with temperatures maxing out at 3°C (37°F).
- Nighttime temperatures dropped to -3°C (27°F) on September 20, 2007, marking the coldest September night on record.
- The heaviest September precipitation occurred on September 25, 2020, when 43 mm (1.7 in) of precipitation fell.
Best Places in Austria in September
Find out more about the weather in Austria and which places have the best travel conditions in this month. See all of Austria in September →
perfect weather
pleasant
tolerable
unpleasant
poor
What to Wear in Flachau in September
The weather can be unpredictable in September, so pack clothes you can easily mix and match. You could bring jeans, other long pants, and a few t-shirts. A light jacket or light sweater will be pleasant for the cooler moments. Also bring a poncho, it will rain a lot! Waterproof everything you can. Sunglasses could come in handy during the sunnier parts of your trip.What To Do in Flachau in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Austria, check out our Flachau's climate page.
Temperature Rainfall Sunshine Humidity
See the full Flachau climate overview or explore weather in Austria.
