Climate averages 1991–2020
Sarajevo weather
in September.
A mild, wet month: the 4th warmest and the 4th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Sarajevo: daytime highs average 21.1°C and nights cool to about 11.7°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 91 mm of rain on roughly 12 days, which makes September a wet month (the 4th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 33 min on an average September day.
The nearest other city in this atlas is Ilidža (4 km away). In September its highs average 21.1°C, about as warm as Sarajevo, with 91 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Sarajevo ranks joint 6th of 7 for the warmest September highs and joint 2nd of 7 for the driest September (rainfall, lowest first). The mean September high of those 7 cities is 22.0°C; Sarajevo is 0.9°C cooler than that mean.
From September to October, average highs fall by 4.6°C to 16.5°C, and monthly rainfall rises from 91 mm to 95 mm.
The annual picture
September in context
Monthly rainfall
Average total · mmAverages from hourly ERA5 reanalysis data. Actual weather varies from year to year. How these numbers are calculated
Every month, side by side
Sarajevo climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 4.5°C-3.3°C | -3.3°C | 83 | 11.9 | 9.39 h |
| February | 5.7°C-2.8°C | -2.8°C | 92 | 11.8 | 10.410 h |
| March | 9.8°C0.6°C | 0.6°C | 93 | 12.9 | 11.912 h |
| April | 14.9°C5.0°C | 5.0°C | 109 | 15.3 | 13.413 h |
| May | 19.5°C9.5°C | 9.5°C | 110 | 16.0 | 14.715 h |
| June | 23.2°C13.4°C | 13.4°C | 94 | 13.7 | 15.415 h |
| July | 25.5°C15.5°C | 15.5°C | 84 | 12.5 | 15.115 h |
| August | 26.1°C15.8°C | 15.8°C | 69 | 11.2 | 14.014 h |
| September, selected | 21.1°C11.7°C | 11.7°C | 91 | 11.5 | 12.613 h |
| October | 16.5°C7.3°C | 7.3°C | 95 | 10.3 | 11.111 h |
| November | 10.9°C2.9°C | 2.9°C | 104 | 11.8 | 9.710 h |
| December | 5.5°C-1.7°C | -1.7°C | 110 | 12.6 | 9.09 h |
Rainfall is the average of the 30 separate monthly totals. A rain day is a local calendar day with at least 1 mm of precipitation. Daylight is the calculated sunrise-to-sunset length, not measured sunshine.
Compare places
September in nearby cities
- Ilidža in SeptemberBosnia and Herzegovina · 4 kmHigh 21.1°C · Low 12.0°C · 91 mm rain
- Zenica in SeptemberBosnia and Herzegovina · 53 kmHigh 21.9°C · Low 12.5°C · 94 mm rain
- Mostar in SeptemberBosnia and Herzegovina · 71 kmHigh 24.2°C · Low 13.8°C · 135 mm rain
- Tuzla in SeptemberBosnia and Herzegovina · 81 kmHigh 22.1°C · Low 12.3°C · 86 mm rain
- Banja Luka in SeptemberBosnia and Herzegovina · 138 kmHigh 22.2°C · Low 12.0°C · 95 mm rain
- Split in SeptemberCroatia · 159 kmHigh 24.2°C · Low 16.6°C · 103 mm rain
- Čačak in SeptemberSerbia · 160 kmHigh 22.6°C · Low 12.2°C · 56 mm rain
- Podgorica in SeptemberMontenegro · 173 kmHigh 24.4°C · Low 15.9°C · 164 mm rain
Read the numbers correctly
Climate, not a promise.
These patterns help compare months. They cannot tell you the weather on a specific day of your trip.
Sources, method and limitsHow these numbers are made (what the highs, lows and rain days mean, the sources and the model cell used for Sarajevo) is explained once on the Sarajevo year overview and on the Sources, method and limits page.
Ilidža lies in the same rainfall cell, so its rainfall figures are identical to these; temperatures differ because they come from smaller 0.1° cells.