September weather forecastPostojna, Slovenia

Weather in September

As Summer recedes, September welcomes autumn to Postojna with temperatures dipping to 20°C (68°F) from the preceding summer's peak of 24°C (75.2°F). The significant change in temperature ushers in cooler weather, a gentle reminder of the impending winter. Despite the drop, September remains relatively warm during the day, providing a comfortable transition. In contrast to August, rainfall increases even as daylight hours continue on a decreasing trend. With its mild climate and rich fall foliage, September sets an enchanting autumn scene in Postojna.

Temperature

As Postojna enters September, the average high-temperature subtly lowers from the a warm 24°C (75.2°F) of August to a pleasant 20°C (68°F). Postojna records a significant temperature drop in September nights, lowering to an average of 8°C (46.4°F).

Rainfall

During September, Postojna regularly aggregates up to 188mm (7.4") of precipitation. During the entire year, Postojna aggregates up to 1838mm (72.36") of precipitation.

Daylight

The average length of the day in September in Postojna is 12h and 32min.
On the first day of September in Postojna, sunrise is at 06:24 and sunset at 19:41. On the last day of the month, sunrise is at 07:00 and sunset at 18:45 CEST.