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Weather in Postojna for September 2027

Your guide to Postojna weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Postojna at the beginning of September is 24.5 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 15.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Postojna in September is notably wet, with an average of 13 rainy days, and a total of 183.3 mm of precipitation.

    • More

  • Is September a good time to visit Postojna? check out the best time to travel to Postojna page.

Average dry days
17
Dry days
Average rainy days
13
Rainy days
Average snowy days
0
Snow days
Average temperatures
19°/10°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
79 %
Avg humidity

Postojna Weather September

Move between months or click on a day
August
October
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Partly cloudy
25°
2
Partly cloudy
25°
3
Light rain
25°
4
Sunny
26°
5
Light rain
26°
6
Patchy light rain with thunder
21°
7
Sunny
23°
8
Light rain shower
25°
9
Light rain
20°
10
Heavy rain
18°
11
Moderate rain
18°
12
Moderate rain
17°
13
Light drizzle
18°
14
Light rain
17°
15
Patchy rain possible
18°
16
Light rain
19°
17
Moderate rain
15°
18
Light rain
19°
19
Patchy rain possible
20°
20
Patchy rain possible
21°
21
Mist
20°
22
Partly cloudy
19°
23
Light rain
17°
24
Moderate rain
14°
25
Light rain
15°
26
Light rain shower
16°
27
Light rain shower
17°
28
Patchy rain possible
17°
29
Fog
16°
30
Patchy rain possible
13°

Temperatures trend during September in Postojna

See the weather trend as well as the moving average line

September weather in Postojna day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Partly cloudy
Partly cloudy
 25° /14° 0 mm 7
2 Sept. Partly cloudy
Partly cloudy
 25° /15° 0.8 mm 6.9
3 Sept. Light rain
Light rain
 25° /14° 4.7 mm 6
4 Sept. Sunny
Sunny
 26° /14° 0.1 mm 6.7
5 Sept. Light rain
Light rain
 26° /15° 4.8 mm 6.7
6 Sept. Patchy light rain with thunder
Patchy light rain with thunder
 21° /13° 2.6 mm 6
7 Sept. Sunny
Sunny
 23° /12° 0 mm 6
8 Sept. Light rain shower
Light rain shower
 25° /13° 0.5 mm 6
9 Sept. Light rain
Light rain
 20° /13° 8.8 mm 4
10 Sept. Heavy rain
Heavy rain
 18° /11° 66.4 mm 3
11 Sept. Moderate rain
Moderate rain
 18° /10° 14 mm 3
12 Sept. Moderate rain
Moderate rain
 17° /8° 21.6 mm 5
13 Sept. Light drizzle
Light drizzle
 18° /9° 1.8 mm 4
14 Sept. Light rain
Light rain
 17° /10° 5.4 mm 3
15 Sept. Patchy rain possible
Patchy rain possible
 18° /9° 0.1 mm 5
16 Sept. Light rain
Light rain
 19° /9° 7.3 mm 5
17 Sept. Moderate rain
Moderate rain
 15° /8° 14.4 mm 3
18 Sept. Light rain
Light rain
 19° /8° 3.1 mm 4
19 Sept. Patchy rain possible
Patchy rain possible
 20° /11° 1.4 mm 4
20 Sept. Patchy rain possible
Patchy rain possible
 21° /12° 0 mm 5
21 Sept. Mist
Mist
 20° /10° 0 mm 4
22 Sept. Partly cloudy
Partly cloudy
 19° /9° 0.4 mm 5
23 Sept. Light rain
Light rain
 17° /9° 3.3 mm 5
24 Sept. Moderate rain
Moderate rain
 14° /10° 11.9 mm 3
25 Sept. Light rain
Light rain
 15° /8° 4.3 mm 4
26 Sept. Light rain shower
Light rain shower
 16° /9° 1.6 mm 4
27 Sept. Light rain shower
Light rain shower
 17° /10° 1.9 mm 4
28 Sept. Patchy rain possible
Patchy rain possible
 17° /8° 1.2 mm 4
29 Sept. Fog
Fog
 16° /6° 0 mm 4
30 Sept. Patchy rain possible
Patchy rain possible
 13° /5° 1.1 mm 3
Next
Important Notice
Our weather forecast for Postojna in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Postojna forecast closer to your planned date for the most up-to-date weather information.
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Postojna in September - FAQ

What are the expected maximum and minimum temperatures in Postojna during September?
Enjoy moderate daytime temperatures of up to 19° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.

How much rainfall should be expected in Postojna during September?
Significant rainfall exceeding 183.3 mm is expected in Postojna during September, occurring over more than 13 days. Preparing for wet conditions is recommended in your planning.

What are the typical wind conditions in Postojna during September?
The average wind speed in Postojna during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Postojna

Explore the daily rainfall trends and prepare for Postojnas September weather 💧
Typically, Postojna has 13 rainy days in September with a total of 183.3 mm of rainfall.

UV exposure in Postojna during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Location coordinates Where is Postojna?

Get accurate weather forecasts for Postojna, located at latitude 45.774 and longitude 14.215. Stay updated with localized weather information tailored for Postojna.

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