Mostar weather in May

In May, Mostar sees average daytime highs of 22°C and overnight lows near 10°C, with 109 mm of rain across 12.4 wet days and about 14.5 hours of daylight. It is the 5th-warmest and 9th-wettest month of the year here.

Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 35% of the time in May, and the air most often feels dry.

Daylight stretches from about 13 h 54 min at the start of May to 14 h 54 min by month's end. Set against the rest of the year, May is Mostar's 6th-clearest and 8th-windiest month. For the whole year in context, see Mostar's year-round climate.

Daytime high
22°
5th warmest
Overnight low
10°
8th coldest
Rainfall
109 mm
12.4 wet days
Daylight
14 h 30 min
4:30 AM – 7:00 PM
Cloud cover
54%
6th clearest
Wind
6 km/h
8th windiest
Solar energy
6.03 kWh/m²
Travel score
6.3
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 May

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 20°C in the first days to 23°C by the end.

A typical May day in Mostar reaches about 22°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 16°C and 26°C. Set against its neighbours, May runs about 5°C warmer than April and about 5°C cooler than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
1209
2209
3209
4209
5209
6209
7219
82110
92110
102110
112110
122110
132110
142110
152110
162210
172211
182211
192211
202211
212211
222211
232211
242211
252311
262311
272312
282312
292312
302312
312312

How May really feels in Mostar

Once humidity and wind are folded in, May averages 0 days that feel above 32°C and 0 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
0
wind chill below the day's low

May sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Mostar weather by month

How May compares with the rest of the year at a glance. May is the 5th-warmest and 9th-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 May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 35% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 45%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14951
24951
35050
45050
55149
65248
75149
85248
95347
105347
115347
125347
135446
145347
155446
165446
175446
185545
195545
205545
215644
225644
235842
245842
255842
265941
275941
286040
296040
306139
316139

Chance of precipitation in May

Any precipitation

Mostar gets around 109 mm of rain over 12.4 wet days in May. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 40% and peaks near 43% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
143
243
343
442
542
642
742
841
941
1041
1140
1240
1340
1440
1539
1639
1739
1839
1939
2039
2139
2239
2339
2439
2539
2639
2739
2839
2939
3040
3140

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 86% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19820
29820
39730
49730
59640
69640
79550
89550
99460
109370
119370
129280
139280
149190
1590100
1689110
1788120
1887130
1986140
2084160
2183170
2281190
2379201
2477221
2576231
2674251
2771272
2869292
2966313
3064333
3161354

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 6 km/h on the calmest days to 6 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
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 13 h 54 min at the start of May to 14 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 60 minutes over May. Sunrise moves from 4:49 AM to 4:18 AM, and sunset from 6:42 PM to 7:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.94:496:42
213.94:486:44
314.04:476:45
414.04:456:46
514.14:446:47
614.14:426:48
714.14:416:50
814.24:406:51
914.24:396:52
1014.34:376:53
1114.34:366:54
1214.34:356:55
1314.44:346:56
1414.44:336:57
1514.54:316:59
1614.54:307:00
1714.54:297:01
1814.64:287:02
1914.64:277:03
2014.64:267:04
2114.74:257:05
2214.74:257:06
2314.74:247:07
2414.84:237:08
2514.84:227:09
2614.84:217:10
2714.84:217:11
2814.94:207:12
2914.94:197:13
3014.94:187:14
3114.94:187:14

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.03 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 — May's 6.03 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.6Bright
25.6Bright
35.7Bright
45.7Bright
55.7Bright
65.8Bright
75.8Bright
85.8Bright
95.9Bright
105.9Bright
115.9Bright
125.9Bright
136.0Bright
146.0Bright
156.0Intense
166.0Intense
176.0Intense
186.1Intense
196.1Intense
206.1Intense
216.1Intense
226.2Intense
236.2Intense
246.2Intense
256.2Intense
266.3Intense
276.3Intense
286.3Intense
296.3Intense
306.3Intense
316.4Intense
Planning a trip in May

Is May a good time to visit Mostar?

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

6.3
Sightseeing
3rd-best month of the year
4.1
Beach & pool
5th-best month of the year

May is a reasonable time to visit Mostar for sightseeing.

What to pack for Mostar in May

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

In May, Mostar sees daytime highs around 22°C and nights near 10°C. Pack sun protection. Worth having: rain gear. About 12 days see rain.

sun protectionrain gear

Sea temperature near Mostar in May

The nearest coast averages about 18°C in May — 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 May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 7 — enough to warrant sun protection. 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 May

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where May 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
May 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).