Temperature
Pleasant by day, brisk at night.
69°Ftypical September high
Typical range
Mild days with cool nights and some sun.

Pleasant by day, brisk at night.
Several rainy days. About 13 wet days this month.
A mix of sunshine and cloud.
In September, afternoons feel about 66° and nights feel near 54°.
Mostly cloudy skies this month.
Calm winds are typical in September.
September late afternoons are around 68°F, easing to about 63°F in early evening.
| Month | High°F | Low°F | Rainin | Wet days | Sunh | Humidity% |
|---|---|---|---|---|---|---|
| Jan | 39 | 29 | 3.1 | 13 | 5.3 | 84 |
| Feb | 44 | 31 | 2.7 | 12 | 6.5 | 79 |
| Mar | 51 | 36 | 3.2 | 14 | 8.0 | 74 |
| Apr | 61 | 43 | 3.1 | 13 | 10.2 | 71 |
| May | 68 | 51 | 5.1 | 16 | 10.5 | 74 |
| Jun | 75 | 58 | 4.9 | 15 | 11.4 | 74 |
| Jul | 78 | 61 | 5.1 | 16 | 11.3 | 74 |
| Aug | 78 | 60 | 4.9 | 14 | 10.6 | 76 |
| Sep | 69 | 53 | 4.6 | 13 | 8.7 | 80 |
| Oct | 60 | 46 | 3.3 | 12 | 7.1 | 82 |
| Nov | 49 | 38 | 2.8 | 12 | 5.4 | 84 |
| Dec | 41 | 32 | 3.0 | 14 | 4.9 | 85 |
Similar climates
Want a side-by-side climate view? Compare Amstetten with Aachen.
Typical monthly values are based on long-term climate records. Useful for planning, not a forecast. Check the weather before you travel.
Sunshine: source type is not yet identified at metric level.
Local microclimates can vary by beach, neighborhood, trail, or elevation.
Last updated: Jul 31, 2026
Data & methodology