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Weather in Banja Luka for September 2025

Your guide to Banja Luka weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Banja Luka at the beginning of September is 30.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 21.3 °C by the end of September.

    • Rain 🌧️

  • The climate of Banja Luka in September is notably wet, with an average of 15 rainy days, and a total of 124.3 mm of precipitation.

    • More

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

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
15
Dry days
Average rainy days
15
Rainy days
Average snowy days
0
Snow days
Average temperatures
25°/11°
Temperatures
Average wind speed
12 km/h
Avg max wind
Average humidity
66 %
Avg humidity

Banja Luka in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
31°
2
Sunny
32°
3
Sunny
31°
4
Light rain shower
30°
5
Partly cloudy
30°
6
Sunny
30°
7
Sunny
30°
8
Sunny
33°
9
Sunny
28°
10
Sunny
26°
11
Sunny
29°
12
Sunny
31°
13
Partly cloudy
20°
14
Partly cloudy
19°
15
Mist
17°
16
Partly cloudy
19°
17
Partly cloudy
22°
18
Sunny
25°
19
Light rain shower
25°
20
Partly cloudy
24°
21
Patchy rain possible
25°
22
Sunny
26°
23
Light rain shower
22°
24
Light rain shower
19°
25
Light drizzle
17°
26
Patchy rain possible
25°
27
Sunny
27°
28
Sunny
22°
29
Sunny
19°
30
Partly cloudy
20°
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Temperatures trend during September in Banja Luka

See the weather trend as well as the moving average line
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September weather day by day

Click on a date for more information
August October
Date Weather Temperatures Rain UV More
1 Sept. Sunny
Sunny
 31° /14° 0 mm 8
2 Sept. Sunny
Sunny
 32° /15° 0 mm 8
3 Sept. Sunny
Sunny
 31° /14° 0.1 mm 7
4 Sept. Light rain shower
Light rain shower
 30° /13° 1 mm 7
5 Sept. Partly cloudy
Partly cloudy
 30° /11° 1.4 mm 7
6 Sept. Sunny
Sunny
 30° /12° 1.4 mm 7
7 Sept. Sunny
Sunny
 30° /12° 0 mm 8
8 Sept. Sunny
Sunny
 33° /13° 0.8 mm 8
9 Sept. Sunny
Sunny
 28° /12° 4.6 mm 7
10 Sept. Sunny
Sunny
 26° /11° 0.3 mm 7
11 Sept. Sunny
Sunny
 29° /10° 0 mm 8
12 Sept. Sunny
Sunny
 31° /10° 0.8 mm 7
13 Sept. Partly cloudy
Partly cloudy
 20° /9° 15.7 mm 5
14 Sept. Partly cloudy
Partly cloudy
 19° /9° 1.5 mm 5
15 Sept. Mist
Mist
 17° /9° 11.1 mm 4
16 Sept. Partly cloudy
Partly cloudy
 19° /8° 10.4 mm 5
17 Sept. Partly cloudy
Partly cloudy
 22° /10° 1.1 mm 6
18 Sept. Sunny
Sunny
 25° /10° 0.2 mm 6
19 Sept. Light rain shower
Light rain shower
 25° /11° 1.5 mm 6
20 Sept. Partly cloudy
Partly cloudy
 24° /10° 0.7 mm 6
21 Sept. Patchy rain possible
Patchy rain possible
 25° /10° 0.3 mm 6
22 Sept. Sunny
Sunny
 26° /10° 0.7 mm 7
23 Sept. Light rain shower
Light rain shower
 22° /11° 27.3 mm 6
24 Sept. Light rain shower
Light rain shower
 19° /10° 13.6 mm 4
25 Sept. Light drizzle
Light drizzle
 17° /10° 2.4 mm 4
26 Sept. Patchy rain possible
Patchy rain possible
 25° /10° 0 mm 6
27 Sept. Sunny
Sunny
 27° /11° 0 mm 7
28 Sept. Sunny
Sunny
 22° /9° 20.9 mm 6
29 Sept. Sunny
Sunny
 19° /7° 6.7 mm 5
30 Sept. Partly cloudy
Partly cloudy
 20° /6° 0 mm 6
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Important Notice
Our weather forecast for Banja Luka 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 Banja Luka forecast closer to your planned date for the most up-to-date weather information.

Guide for Banja Luka in September

In Banja Luka, Bosnia and Herzegovina, September marks the transition from summer to autumn, bringing about noticeable changes in the weather.

At the beginning of the month, the weather in Banja Luka is generally warm and pleasant, with average daytime temperatures around 24° and occasional showers.

As the month progresses, the temperatures gradually begin to decrease, and by the end of September, the weather becomes cooler with average daytime temperatures around 18°. The evenings and nights tend to be cooler, with temperatures dropping to around 10° towards the end of the month.

The weather in Banja Luka during September is characterized by decreasing daylight hours and a gradual shift towards autumnal conditions.

Travelers visiting Banja Luka during this time can expect comfortable weather for outdoor activities at the beginning of the month, while towards the end, they may need to pack some warmer clothing for the cooler evenings.

Overall, September in Banja Luka offers a pleasant transition from summer to autumn, allowing visitors to enjoy the changing colors of the surrounding nature and the cultural attractions of the city.

Have you visited Banja Luka in September? Share your experience by writing a review.

Banja Luka in September - FAQ

Is September a good time to visit Banja Luka?
Yes, September is a good time to traveling to Banja Luka, read more about the best time to visit Banja Luka.
What are the expected maximum and minimum temperatures in Banja Luka during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 11°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Banja Luka during September?
Significant rainfall exceeding 124.3 mm is expected in Banja Luka during September, occurring over more than 15 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Banja Luka during September?
The average wind speed in Banja Luka during September is 12 km/h, suggesting breezy to windy conditions, depending on your activities.

What to pack to Banja Luka in September?

As you prepare for your trip to Banja Luka in September, it's important to consider the typical weather patterns for the time of year. Below is a carefully tailored packing list to ensure that your time in Banja Luka, during September, is comfortable and enjoyable, regardless of the weather conditions.

  • Clothing
    • Warm Clothing: Sweaters, hoodies, long pants
    • Rain Gear: Lightweight, waterproof clothing
  • Footwear
    • Waterproof Shoes
  • Accessories
    • Sunglasses: For sun protection
    • Sun Hats: Wide-brimmed hats for sun protection in warm weather
    • Scarves: To protect you from the cold wind
    • Gloves/Mittens: Essential for cold weather
    • Warm Hats: Warm hats for insulation in cold weather
    • Umbrellas/Raincoats: For rainy days

September rainfall patterns in Banja Luka

Explore the daily rainfall trends and prepare for Banja Lukas September weather 💧

UV exposure in Banja Luka during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Banja Luka?

Get accurate weather forecasts for Banja Luka, located at latitude 44.778 and longitude 17.194. Stay updated with localized weather information tailored for Banja Luka.

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