Climate almanac
Postojna
Municipality of Postojna, Slovenia · 45.77°, 14.22°
What is the weather like in Postojna in September?
In September, Postojna is typically 69°F (20°C) during the day and 52°F (11°C) at night. The month brings about 8.0 in (202 mm) of precipitation in total.
- Average high69°F (20°C)
- Average low52°F (11°C)
- Precipitation8.0 in (202 mm)
- Clear or mostly clear days10
- Based on2016-2025 daily ERA5 reanalysis data (10-year normals)