Mostar weather in September
Temperature, rain and sunshine in September: long-term averages from 30 years of weather data, not a forecast.
Holiday weather in September
Excellent
Best time to visit: April – June, September – October
What is the weather like in Mostar in September?
In September, Mostar is warm: daytime highs average 25 °C, and nights cool down to about 14 °C. The sun shines for around 8 hours a day. Rain falls on about 8 days, adding up to 131 mm. All in all, September is an excellent month for a holiday in Mostar.
September compared
How the weather changes from August to October. Tap a month to open it.
| AugustAug | SeptemberSep | OctoberOct | |
|---|---|---|---|
| Score | 68 | 86 | 75 |
| Day | 32° | 25° | 20° |
| Night | 18° | 14° | 9° |
| Sun | 10 h | 8 h | 6 h |
| Rain days | 5 | 8 | 10 |
More details for September
- Daylight
- 12 h 34 min06:27 – 19:01
- UV index
- 6 · highclear sky, noon (estimate)All months
- Muggy days
- 0 daysdew point 18 °C or moreAll months
- Wind
- 14 km/haverage daily peakAll months
- Cloud cover
- 39 %on averageAll months
- Hot days
- 4 days30 °C or moreAll months
- Snow days
- 0 days1 cm or more of fresh snow
- Time zone
- UTC+2Europe/Sarajevo
How the score comes together
- Temperatureweight 50 %100 %
- Sunshineweight 20 %75 %
- Few rainy daysweight 30 %69 %
Each factor is rated from 0 to 100 % and weighted for the travel style “City break”.
What to pack in September
- Sunscreen
- Light, breathable clothes
- A jumper for the evenings
- Rain jacket or umbrella
Mostar in September: quick answers
Is Mostar hot in September?
Warm rather than hot: in September, daytime highs in Mostar average 25 °C and nights cool to about 14 °C. On about 4 days the thermometer climbs to 30 °C or more.
Does it rain much in Mostar in September?
Rain falls on about 8 days, adding up to 131 mm.
Mostar month by month
The whole year in MostarAll destinations: Bosnia and HerzegovinaWhere to go in September
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