Mostar in Fall
In fall (September, October and November), Mostar sees average daytime highs around 19°C and overnight lows near 8°C, with 537 mm of precipitation over about 33 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 27°C in early September to 10°C by late November. The sky is clear or mostly clear about 41% of the time across fall, and the air most often feels dry.
Fall is Mostar's 2nd-best season to visit on our travel score. For the whole year in context, see Mostar's year-round climate.
- Avg daytime high
- 19°C
- 2nd-warmest season
- Avg overnight low
- 8°C
- Precipitation
- 537 mm
- 33 wet days
- Avg wind
- 6 km/h
- Travel score
- 5.5
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Mostar in Fall
Over the season highs ease from about 27°C in early September to 10°C by late November.
A typical fall day in Mostar reaches about 19°C and drops to 8°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Mostar
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall 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 the three fall months (September, October and November) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Snow days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|---|
| Jan | 7° / -1° | 139 | 11.1 | 4.3 | 9.2 | 1.0 |
| Feb | 9° / -0° | 134 | 10.9 | 5 | 10.2 | 1.6 |
| Mar | 13° / 3° | 133 | 11.8 | 3.3 | 11.6 | 3.4 |
| Apr | 17° / 6° | 147 | 13.1 | 1.3 | 13.2 | 4.9 |
| May | 22° / 10° | 109 | 12.4 | 0 | 14.5 | 6.3 |
| Jun | 26° / 14° | 72 | 9.8 | 0 | 15.2 | 6.9 |
| Jul | 29° / 17° | 45 | 6.8 | 0 | 14.9 | 6.2 |
| Aug | 30° / 17° | 53 | 6.6 | 0 | 13.8 | 6.0 |
| Sep | 24° / 13° | 135 | 9.1 | 0 | 12.3 | 7.1 |
| Oct | 19° / 8° | 180 | 10.8 | 0.4 | 10.8 | 6.0 |
| Nov | 13° / 4° | 222 | 13.2 | 1.8 | 9.5 | 3.4 |
| Dec | 8° / 0° | 191 | 12.5 | 3.6 | 8.8 | 1.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 41% of the time across fall.
Chance of precipitation in Fall
Mostar gets around 537 mm of rain and snow over 33 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 13 hours in early September to 9 hours by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 3.1 kWh/m².
Is fall a good time to visit Mostar?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is a reasonable time to visit Mostar for sightseeing.
What to pack for Mostar in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Mostar sees daytime highs around 19°C and nights near 8°C. Worth packing: light clothes, a warm layer and rain gear. About 33 days see rain.
Sea temperature near Mostar in Fall
The nearest coast averages about 21°C across fall — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 14 | 13 | 13 | 15 | 18 | 22 | 24 | 25 | 23 | 21 | 19 | 16 |
| Comfort | Bracing | Bracing | Bracing | Bracing | Cool | Refreshing | Warm | Warm | Refreshing | Refreshing | Cool | Cool |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 14 | Bracing |
| Feb | 13 | Bracing |
| Mar | 13 | Bracing |
| Apr | 15 | Bracing |
| May | 18 | Cool |
| Jun | 22 | Refreshing |
| Jul | 24 | Warm |
| Aug | 25 | Warm |
| Sep | 23 | Refreshing |
| Oct | 21 | Refreshing |
| Nov | 19 | Cool |
| Dec | 16 | Cool |
UV index in Mostar in Fall
Clear-sky midday UV across fall averages around 4 — 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 1 | 3 | 5 | 7 | 7 | 9 | 9 | 9 | 6 | 4 | 2 | 1 |
| Level | Low | Moderate | High | Very high | Very high | Very high | Very high | Very high | High | Moderate | Low | Low |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 1 | Low |
| Feb | 3 | Moderate |
| Mar | 5 | High |
| Apr | 7 | Very high |
| May | 7 | Very high |
| Jun | 9 | Very high |
| Jul | 9 | Very high |
| Aug | 9 | Very high |
| Sep | 6 | High |
| Oct | 4 | Moderate |
| Nov | 2 | Low |
| Dec | 1 | Low |
Air quality in Mostar in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 7 | 10 | 12 | 16 | 13 | 12 | 11 | 16 | 8 | 7 | 7 | 6 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Good | Moderate | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 7 | Good |
| Feb | 10 | Good |
| Mar | 12 | Good |
| Apr | 16 | Moderate |
| May | 13 | Moderate |
| Jun | 12 | Moderate |
| Jul | 11 | Good |
| Aug | 16 | Moderate |
| Sep | 8 | Good |
| Oct | 7 | Good |
| Nov | 7 | Good |
| Dec | 6 | Good |
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.
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.
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
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.