Banja Luka weather in December

In December, Banja Luka sees average daytime highs of 6°C and overnight lows near -1°C, with 82 mm of precipitation across 11.5 wet days and about 8.7 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Highs ease over the month, from about 7°C in the first days to 5°C by the end. The sky is clear or mostly clear about 23% of the time in December, and the air most often feels dry.

Daylight stretches from about 8 h 54 min at the start of December to 8 h 42 min by month's end. Set against the rest of the year, December is Banja Luka's 12th-clearest and 4th-windiest month. For the whole year in context, see Banja Luka's year-round climate.

Daytime high
11th warmest
Overnight low
-1°
3rd coldest
Precipitation
82 mm
11.5 wet days
Daylight
8 h 36 min
7:29 AM – 4:06 PM
Cloud cover
66%
12th clearest
Wind
7 km/h
4th windiest
Solar energy
1.22 kWh/m²
Travel score
0.2
out of 10

Banja Luka is city in Bosnia and Herzegovina.

Density
178/km²
people per km²
Founded
1494

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 7°C in the first days to 5°C by the end.

A typical December day in Banja Luka reaches about 6°C in the afternoon and slips back to -1°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between -1°C and 12°C. Set against its neighbours, December runs about 5°C cooler than November and on par with January.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
171
270
370
470
570
660
760
860
96-1
106-1
116-1
126-1
135-1
145-1
155-1
165-1
175-1
185-2
195-2
205-2
215-2
225-2
235-2
245-2
255-2
265-2
275-2
285-2
295-2
305-2
315-2

How December really feels in Banja Luka

Once humidity and wind are folded in, December averages 0 days that feel above 32°C and 31 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
31
wind chill below the day's low

The story in December is cold — wind chill drags the overnight "feels like" below the raw low.

Banja Luka weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -3°7010.4790.0
Feb / -2°7010.36.510.10.8
Mar12° / 7911.54.311.63.1
Apr17° / 9212.71.413.24.9
May21° / 10°11213.5014.66.0
Jun25° / 14°9711.9015.36.6
Jul27° / 15°8710.50156.7
Aug27° / 15°728.8013.97.0
Sep22° / 11°9511012.36.6
Oct17° / 729.20.610.75.6
Nov11° / 8510.239.42.7
Dec / -1°8211.56.18.70.2

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in December, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 63%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13565
23565
33466
43466
53466
63466
73565
83565
93565
103664
113664
123664
133664
143664
153763
163763
173763
183763
193763
203763
213763
223862
233862
243763
253763
263862
273862
283862
293961
303961
313961

Chance of precipitation in December

Any precipitationSnow

Banja Luka gets around 82 mm of rain and snow over 11.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 37% and peaks near 38% on the wettest days, and about 6 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13715
23715
33715
43716
53816
63816
73817
83818
93818
103819
113820
123820
133821
143821
153821
163821
173821
183821
193821
203722
213722
223722
233722
243722
253722
263722
273722
283722
293722
303722
313722

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

Most of December feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, December lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 8 h 54 min at the start of December to 8 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:15 AM to 7:35 AM, and sunset from 4:07 PM to 4:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.97:154:07
28.87:164:06
38.87:174:06
48.87:184:06
58.87:194:06
68.87:204:06
78.77:214:05
88.77:224:05
98.77:234:05
108.77:244:05
118.77:254:05
128.77:264:05
138.77:264:05
148.67:274:06
158.67:284:06
168.67:294:06
178.67:294:06
188.67:304:07
198.67:314:07
208.67:314:07
218.67:324:08
228.67:324:08
238.67:334:09
248.67:334:09
258.67:334:10
268.67:344:10
278.67:344:11
288.67:344:12
298.67:344:12
308.67:354:13
318.77:354:14

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 1.22 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 1.22 kWh/m² to a high of 5.91 kWh/m² in July across the year — December's 1.22 kWh/m² sits near the bottom.

00.511.52151015202531
Solar energy (kWh/m²)Level
11.3Dim
21.3Dim
31.3Dim
41.3Dim
51.3Dim
61.3Dim
71.3Dim
81.2Dim
91.2Dim
101.2Dim
111.2Dim
121.2Dim
131.2Dim
141.2Dim
151.2Dim
161.2Dim
171.2Dim
181.2Dim
191.2Dim
201.2Dim
211.2Dim
221.2Dim
231.2Dim
241.2Dim
251.2Dim
261.2Dim
271.2Dim
281.3Dim
291.3Dim
301.3Dim
311.3Dim
Planning a trip in December

Is December a good time to visit Banja Luka?

Our two travel scores rate December for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

0.2
Sightseeing
11th-best month of the year
0.0
Beach & pool
10th-best month of the year

December is a weaker month for outdoor sightseeing in Banja Luka.

What to pack for Banja Luka in December

From December's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In December, Banja Luka sees daytime highs around 6°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 12 days see rain.

a warm layera heavy coatrain gear

UV index in Banja Luka in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 1. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Banja Luka peaks around July 11 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 11UV 8Dec 20UV 1
UV index (midday)Level
Jan1Low
Feb2Moderate
Mar5Moderate
Apr7High
May6High
Jun8Very high
Jul8Very high
Aug8Very high
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Banja Luka in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Banja Luka is worst in April — around 15 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (December, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodApr 1415 µg/m³Dec 149 µg/m³
PM2.5 (µg/m³)Level
Jan11Good
Feb11Good
Mar14Moderate
Apr15Moderate
May14Moderate
Jun14Moderate
Jul12Good
Aug13Moderate
Sep10Good
Oct10Good
Nov10Good
Dec9Good
Location & terrain

Where is Banja Luka?

Banja Luka sits at 44.8°N, 17.2°E, 151 m above sea level, in Bosnia and Herzegovina. The nearest listed city is Prijedor, 45 km away.

PrijedorJajceTeslicDobojTravnikPožegaSlavonski BrodBugojno

Topography around Banja Luka

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Banja Luka.

Within 3 km, the terrain around Banja Luka has significant variations in elevation — a maximum elevation change of 286 m around an average of 181 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 831 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,855 m.

The land around Banja Luka is covered by artificial surfaces (46%) and trees (33%) within 3 km, trees (65%) and grassland (26%) within 16 km, and trees (72%) within 80 km.

3 km
286 m
16 km
831 m
80 km
1,855 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Prijedor 45 km · Jajce 49 km · Teslic 55 km · Doboj 70 km · Travnik 71 km · Požega 73 km · Slavonski Brod 77 km · Bugojno 83 km

Bosnia and Herzegovina travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F
230 V · 50 Hz
Prices
≈ 40% of US
price level, 2025
GDP per capita
$10,382
2025
Happiness
6.4 / 10
World Happiness, 2025
Safe drinking water
86%
of population, 2024
Homicide rate
1.2
per 100k, 2023
Road deaths
13.5
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 591
Religion
Muslim 51%Orthodox 31%Roman Catholic 15%other 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Banja Luka (44.7788°, 17.2063°, elevation 151 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).