Mostar weather in January

In January, Mostar sees average daytime highs of 7°C and overnight lows near -1°C, with 139 mm of precipitation across 11.1 wet days and about 9.2 hours of daylight. It is the 12th-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 7°C through the month. The sky is clear or mostly clear about 37% of the time in January, and the air most often feels dry.

Daylight stretches from about 8 h 48 min at the start of January to 9 h 36 min by month's end. Set against the rest of the year, January is Mostar's 11th-clearest and 4th-windiest month. For the whole year in context, see Mostar's year-round climate.

Daytime high
12th warmest
Overnight low
-1°
1st coldest
Precipitation
139 mm
11.1 wet days
Daylight
9 h 06 min
7:24 AM – 4:32 PM
Cloud cover
59%
11th clearest
Wind
7 km/h
4th windiest
Solar energy
1.74 kWh/m²
Travel score
1.0
out of 10

Mostar is town in Bosnia and Herzegovina.

Density
89/km²
people per km²
Founded
1452

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 7°C through the month.

A typical January day in Mostar reaches about 7°C in the afternoon and slips back to -1°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 3°C and 12°C. Set against its neighbours, January runs about 1°C cooler than December and about 2°C cooler than February.

-10°-5°10°15°151015202531
Avg high (°C)Avg low (°C)
170
270
370
470
570
670
770
870
970
1070
1170
1270
1370
1470
1570
1670
1770
1870
197-1
207-1
217-1
227-1
237-1
247-1
257-1
267-1
277-1
287-1
297-1
307-1
318-1

How January really feels in Mostar

Once humidity and wind are folded in, January 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 January is cold — wind chill drags the overnight "feels like" below the raw low.

Mostar weather by month

How January compares with the rest of the year at a glance. January is the 12th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / -1°13911.14.39.21.0
Feb / -0°13410.9510.21.6
Mar13° / 13311.83.311.63.4
Apr17° / 14713.11.313.24.9
May22° / 10°10912.4014.56.3
Jun26° / 14°729.8015.26.9
Jul29° / 17°456.8014.96.2
Aug30° / 17°536.6013.86.0
Sep24° / 13°1359.1012.37.1
Oct19° / 18010.80.410.86.0
Nov13° / 22213.21.89.53.4
Dec / 19112.53.68.81.4

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 37% of the time in January.

Beyond those clear spells, partly cloudy skies cover about 9% of January, with mostly cloudy or overcast conditions the remaining 54%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34753
44753
54753
64654
74654
84654
94753
104654
114654
124654
134654
144654
154654
164654
174654
184654
194555
204555
214654
224555
234555
244555
254456
264456
274456
284456
294456
304555
314555

Chance of precipitation in January

Any precipitationSnow

Mostar gets around 139 mm of rain and snow over 11.1 wet days in January. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 39% on the wettest days, and about 4 days bring snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
13912
23812
33811
43711
53711
63611
73611
83511
93511
103511
113412
123412
133513
143513
153514
163514
173615
183615
193615
203616
213616
223616
233617
243617
253617
263617
273617
283617
293617
303617
313617

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January 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 January

Winds average 7 km/h in January.

Across January, daily wind ranges from about 7 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
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
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 January

DaylightNight

Daylight runs from about 8 h 48 min at the start of January to 9 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 48 minutes over January. Sunrise moves from 7:27 AM to 7:14 AM, and sunset from 4:17 PM to 4:50 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
18.87:274:17
28.87:274:18
38.97:274:19
48.97:274:19
58.97:274:20
68.97:274:21
78.97:274:22
88.97:274:23
99.07:274:24
109.07:264:25
119.07:264:26
129.07:264:27
139.07:264:28
149.17:254:29
159.17:254:31
169.17:244:32
179.17:244:33
189.27:234:34
199.27:234:35
209.27:224:36
219.37:224:38
229.37:214:39
239.37:204:40
249.47:204:41
259.47:194:43
269.47:184:44
279.57:174:45
289.57:174:46
299.57:164:48
309.67:154:49
319.67:144:50

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 1.74 kWh/m².

For context, solar energy here swings from a low near 1.46 kWh/m² to a high of 6.79 kWh/m² in July across the year — January's 1.74 kWh/m² sits near the bottom.

0123151015202531
Solar energy (kWh/m²)Level
11.5Dim
21.5Dim
31.5Dim
41.5Dim
51.5Dim
61.6Dim
71.6Dim
81.6Dim
91.6Dim
101.6Dim
111.6Dim
121.6Dim
131.7Dim
141.7Dim
151.7Dim
161.7Dim
171.7Dim
181.8Dim
191.8Dim
201.8Dim
211.8Dim
221.9Dim
231.9Dim
241.9Dim
251.9Dim
262.0Dim
272.0Dim
282.0Moderate
292.0Moderate
302.1Moderate
312.1Moderate
Planning a trip in January

Is January a good time to visit Mostar?

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

1.0
Sightseeing
12th-best month of the year
0.0
Beach & pool
10th-best month of the year

January is a weaker month for outdoor sightseeing in Mostar.

What to pack for Mostar in January

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

In January, Mostar sees daytime highs around 7°C and nights near -1°C. Pack a warm layer. Worth having: a heavy coat and rain gear. About 11 days see rain.

a warm layera heavy coatrain gear

Sea temperature near Mostar in January

The nearest coast averages about 14°C in January — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 60 km away) is warmest in August at about 25°C and coldest in February near 13°C.

It's comfortable for a long swim from Jun 1 to Oct 29 — about 5 months when the water holds above 20°C.

10°15°20°25°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarmcomfortable to swim
Sea temperature (°C)Comfort
Jan14Bracing
Feb13Bracing
Mar13Bracing
Apr15Bracing
May18Cool
Jun22Refreshing
Jul24Warm
Aug25Warm
Sep23Refreshing
Oct21Refreshing
Nov19Cool
Dec16Cool

UV index in Mostar in January

LowModerateHighVery highExtreme

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

Under clear skies, the midday UV index in Mostar peaks around July 17 at about 9 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 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 highModerateLowJul 17UV 9Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb3Moderate
Mar5High
Apr7Very high
May7Very high
Jun9Very high
Jul9Very high
Aug9Very high
Sep6High
Oct4Moderate
Nov2Low
Dec1Low

Air quality in Mostar in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Mostar is worst in August — around 16 µg/m³ PM2.5 (moderate), about 2.5× the cleanest month (December, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodAug 1515 µg/m³Dec 186 µg/m³
PM2.5 (µg/m³)Level
Jan7Good
Feb10Good
Mar12Good
Apr16Moderate
May13Moderate
Jun12Moderate
Jul11Good
Aug16Moderate
Sep8Good
Oct7Good
Nov7Good
Dec6Good
Location & terrain

Where is Mostar?

Mostar sits at 43.3°N, 17.8°E, 66 m above sea level, in Bosnia and Herzegovina. The nearest listed city is Međugorje, 20 km away.

MeđugorjeKonjicNeumIlidžaKorčulaSarajevoVisokoDubrovnik

Topography around Mostar

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

Within 3 km, the terrain around Mostar has large variations in elevation — a maximum elevation change of 661 m around an average of 217 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,873 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,364 m.

The land around Mostar is covered by trees (35%), shrubs (26%) and artificial surfaces (23%) within 3 km, trees (50%) and grassland (28%) within 16 km, and trees (52%) and grassland (24%) within 80 km.

3 km
661 m
16 km
1,873 m
80 km
2,364 m
treesshrubsgrasslandcroplandartificial surfaceswater
January weather nearby: Međugorje 20 km · Konjic 36 km · Neum 49 km · Ilidža 68 km · Korčula 69 km · Sarajevo 71 km · Visoko 78 km · Dubrovnik 82 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 Mostar (43.3433°, 17.8081°, elevation 66 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. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).