Bosnia and Herzegovina in September: where is it warmest?
In September, Mostar is the warmest place with 25 °C by day, Sarajevo the coolest with 21 °C. 10 of 10 destinations have good holiday weather.
All destinations in September, warmest first
Long-term averages for the month: daytime high, sea, sunshine and rainy days.
| Place | Score | Air | Sea | Sun | Rain days |
|---|---|---|---|---|---|
| Mostar | 86 | 25° | – | 8 h | 8 |
| Neum | 86 | 25° | 24° | 8 h | 8 |
| Medjugorje | 86 | 24° | – | 8 h | 8 |
| Trebinje | 85 | 23° | – | 8 h | 9 |
| Banja Luka | 77 | 22° | – | 6 h | 10 |
| Tuzla | 77 | 22° | – | 6 h | 10 |
| Zenica | 74 | 22° | – | 6 h | 11 |
| Bihać | 73 | 22° | – | 6 h | 12 |
| Srebrenica | 77 | 21° | – | 6 h | 10 |
| Sarajevo | 76 | 21° | – | 6 h | 11 |
Bosnia and Herzegovina in September: quick answers
Bosnia and Herzegovina in September: where is it warmest?
The warmest places in September are Mostar (25 °C), Neum (25 °C) and Medjugorje (24 °C).
Bosnia and Herzegovina in September: where is the sea warmest?
The sea is warmest at Neum (24 °C).
Bosnia and Herzegovina in September: where is the weather best?
The best holiday weather in September – warm, sunny and dry – is in Mostar, Neum and Medjugorje.
Bosnia and Herzegovina month by month
Bosnia and Herzegovina: weather & best time to visit
Climate averages 1996–2025, not a forecast. Data: Copernicus ERA5 / ERA5-Land via Open-Meteo.com (CC BY 4.0), NOAA OISST, WMO 1991–2020 (NOAA NCEI), GeoNames (CC BY 4.0). Sources & licences