Best year time to visit Postojna

General weather information about Postojna

Average annual temperature is 10.9 °C

Absolute maximum temperature: 31.2 °C

Absolute minimum temperature: -8.3 °C

Number of sunny days: 142 days

Number of rainy days: 209 days

Number of snow days: 14 days

Look at detailed online map of Postojna

* Weather data for Postojna Slovenia is based on climate observations for 2026 year

Postojna air temperature forecast for each month

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Absolute maximum temperature (°C)	10.9	12.4	16.4	17.6	23.3	29.1	30.6	31.2	26.9	24.0	15.4	14.4
Average daytime temperature (°C)	5.3	6.1	10.5	12.3	17.3	22.8	25.4	24.6	21.8	17.8	10.0	7.8
Average temperature (°C)	2.4	1.7	6.1	7.3	13.2	17.9	20.2	19.8	17.2	13.7	6.2	4.3
Average night temperature (°C)	0.2	-1.5	2.1	3.1	9.6	13.4	15.9	15.7	13.6	10.3	3.0	1.4
Absolute minimum temperature (°C)	-8.3	-8.2	-1.8	-2.7	6.5	11.2	10.1	10.2	10.7	2.4	-3.4	-6.1

Postojna monthly weather indicators

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
Daylight maximum duration (h)	9.0	11.0	12.0	14.0	15.0	15.0	15.0	14.0	13.0	11.0	10.0	8.0
Daylight mean duration (h)	9.1	10.4	11.9	13.5	14.9	15.7	15.3	14.1	12.5	10.9	9.5	8.7
Daylight minimum duration (h)	8.0	9.0	11.0	12.0	14.0	15.0	14.0	13.0	11.0	10.0	8.0	8.0
Sunshine mean duration (h)	3.7	6.9	7.5	8.6	9.9	12.6	12.2	10.9	10.4	7.1	5.9	4.5
Precipitation (mm)	207	52	144	128	143	98	350	244	102	374	246	186
Sunny days	6	21	14	10	6	11	9	13	18	15	6	13
Rainy days	17	5	16	20	25	19	22	18	12	16	23	16
Snow days	8	2	1	0	0	0	0	0	0	0	1	2

Postojna - weather forecast by months

Postojna weather in january Postojna weather in february Postojna weather in march Postojna weather in april Postojna weather in may Postojna weather in june Postojna weather in july Postojna weather in august Postojna weather in september Postojna weather in october Postojna weather in november Postojna weather in december

Best time to visit Postojna:

The best time to visit Postojna during the most sunny months:

June — 12.6(h)
July — 12.2(h)
August — 10.9(h)
September — 10.4(h)

Months with the longest average daylight duration in Postojna:

June — 15.7(h)
July — 15.3(h)

The largest precipitation sum in Postojna is at

July — 350(mm)

August — 244(mm)

October — 374(mm)

November — 246(mm)

Weather forecast in the closest to Postojna admin centers