worldweather33°Cexceptionally warm
usually 21°C–29°C
warmer than 95% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
Weather in Banja Luka - 14-day forecast
Detailed weather forecast for Banja Luka, Bosnia and Herzegovina: daytime and night temperature, rain, sunrise and sunset - today and for the next two weeks.
Forecast for the next days in Banja Luka
today☀️
33°💧 1.4 mm
Sun☀️
28°💧 0.2 mm
Mon☀️
29°💧 4.5 mm
Tue☁️
30°💧 0.8 mm
Wed🌧️
34°💧 0.9 mm
Thu🌧️
19°💧 5.3 mm
Fri☁️
21°💧 8.8 mm
Sat☁️
26°💧 16.1 mm
Forecast vs 1991-2020 climate normal
NASA POWERHow does the current forecast compare with normal?
We compare the coming days with weather usually observed at this time of year.
Wednesday 9 Sept in Banja Luka, the forecast high is 34°C. Typical daytime temperatures at this time of year range from 20°C to 28°C, so it will be exceptionally warm. It is warmer than 97% of similar days.
28°Cwarmer than usual
usually 21°C–29°C
warmer than 76% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
29°Cwarmer than usual
usually 20°C–29°C
warmer than 80% of similar days
night: exceptionally warm
rain: more rain than usual
wind: typical
30°Cexceptionally warm
usually 20°C–28°C
warmer than 90% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
34°Cexceptionally warm
usually 20°C–28°C
warmer than 97% of similar days
night: exceptionally warm
rain: typical rainfall
wind: exceptionally strong
19°Ccooler than usual
usually 20°C–28°C
cooler than 83% of similar days
night: warmer than usual
rain: more rain than usual
wind: exceptionally light
21°Ccooler than usual
usually 20°C–28°C
cooler than 72% of similar days
night: exceptionally warm
rain: more rain than usual
wind: exceptionally light
How warm was this week in previous years?
Each bar shows the average daily high during the same 7-day period in each year.
cooler yearstypical rangewarmer years2026 forecastcurrent forecast
From 1981 to 2025, the 5-11 Sept period averaged 25°C by day. The coolest year was 2007 (17°C) and the warmest was 2008 (31°C). The current forecast averages 28°C - higher than in 80% of historical years.
Historical reference: NASA POWER daily gridded data (MERRA-2), the 1991-2020 normal and a +/- 7-day calendar window. The typical range is the 20th-80th percentile. This is not a city weather-station reading and does not change the current forecast. NASA POWER Daily API.
Weather warnings - Banja Luka
Heatorange level
from 5 Sept, 10:00 to 7 Sept, 17:00
Areas: BANJA LUKA
High temperatures and risk of overheating. Drink plenty of water, avoid the midday sun and look after the elderly.
Source: national weather service via Meteoalarm (EUMETNET). Yellow - be aware, orange - be prepared, red - take action.
14-day forecast - Banja Luka
Banja Luka 30 & 45-day weather - long-range outlook
Next 16 days · forecast
27°
around 19° at night · days with rain: 10
Weeks 3-4 · avg for September
22°
around 12° at night · rain chance 41%
Weeks 5-7 · avg for October
18°
around 7° at night · rain chance 39%
The 30 & 45-day outlook for Banja Luka: the next 16 days are a numerical forecast updated daily - on average 27° by day and 19° at night. Further out we rely on multi-year climate averages: around 22° in September, and about 18° in October. Forecasts beyond two weeks are indicative only.
Day-by-day forecast for Banja Luka
Saturday5 September 2026
☀️33°clear sky
Sunday6 September 2026
☀️28°clear sky
Monday7 September 2026
☀️29°clear sky
Tuesday8 September 2026
☁️30°broken clouds
Wednesday9 September 2026
🌧️34°light rain
Thursday10 September 2026
🌧️19°light rain
Friday11 September 2026
☁️21°overcast clouds
Saturday12 September 2026
☁️26°overcast clouds
Sunday13 September 2026
🌧️23°light rain
Monday14 September 2026
🌤️21°scattered clouds
Tuesday15 September 2026
☀️25°clear sky
Wednesday16 September 2026
☀️32°clear sky
Thursday17 September 2026
🌧️25°light rain
Friday18 September 2026
☀️27°clear sky
Saturday19 September 2026
🌤️29°scattered clouds
Sunday20 September 2026
☀️30°clear sky
UV index in Banja Luka - is it safe to sunbathe?
Today the UV index in Banja Luka is 6 (moderate) - unprotected fair skin can burn in about 35 minutes. Seek shade around midday. SPF 30+, sunglasses and a hat for longer stays.
Pollen in Banja Luka - info for allergy sufferers
Today ragweed pollen is highest in Banja Luka - about 2466 grains/m³, very high level. Allergy sufferers should limit time outdoors on dry, windy days and take medication as advised. Pollen levels are a CAMS model forecast and are indicative.
Air quality and smog in Banja Luka
Air quality in Banja Luka is currently very good. Fine particulate PM2.5: 6.6 µg/m³, PM10: 9.4 µg/m³.
| City | PM2.5 (µg/m³) | PM10 (µg/m³) | Air quality |
|---|---|---|---|
| Banja Luka | 6.6 | 9.4 | very good |
Based on PM2.5 thresholds. Station readings, updated daily (last reading: 2026-09-05, 03:00).
Banja Luka weather through the year
Warmest, driest months on average: April, May, June, July.
Nearby and related places
FAQ - Banja Luka weather
What is the weather like in Banja Luka today?
Today it is about 33° during the day and 19° at night, clear sky.
How far ahead can I check the forecast for Banja Luka?
This page shows a detailed 14-day forecast plus the long-term monthly climate, so you can plan both a short trip and a holiday months ahead.