Climate averages 1991–2020
Bihać weather
in September.
A mild, wet month: the 4th warmest and the 10th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
September is a mild month in Bihać: daytime highs average 21.6°C and nights cool to about 12.4°C. By daytime temperature it is the 4th warmest of the 12 months.
Expect about 124 mm of rain on roughly 12 days, which makes September a wet month (the 10th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 12 h 34 min on an average September day.
The nearest other city in this atlas is Banja Luka (105 km away). In September its highs average 22.2°C, 0.6°C warmer than Bihać, with 95 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Bihać ranks 5th of 7 for the warmest September highs and 6th of 7 for the driest September (rainfall, lowest first). The mean September high of those 7 cities is 22.0°C; Bihać is 0.4°C cooler than that mean.
From September to October, average highs fall by 4.7°C to 17.0°C, and monthly rainfall falls from 124 mm to 121 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
Bihać climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 5.5°C-1.4°C | -1.4°C | 90 | 11.2 | 9.29 h |
| February | 7.0°C-1.4°C | -1.4°C | 99 | 11.5 | 10.410 h |
| March | 11.6°C1.9°C | 1.9°C | 100 | 12.6 | 11.912 h |
| April | 16.3°C6.0°C | 6.0°C | 110 | 14.1 | 13.513 h |
| May | 20.5°C10.4°C | 10.4°C | 127 | 14.3 | 14.815 h |
| June | 24.5°C14.3°C | 14.3°C | 97 | 12.0 | 15.516 h |
| July | 27.1°C16.4°C | 16.4°C | 76 | 10.4 | 15.215 h |
| August | 27.2°C16.8°C | 16.8°C | 85 | 10.3 | 14.114 h |
| September, selected | 21.6°C12.4°C | 12.4°C | 124 | 11.6 | 12.613 h |
| October | 17.0°C8.6°C | 8.6°C | 121 | 11.5 | 11.011 h |
| November | 11.5°C4.4°C | 4.4°C | 132 | 12.9 | 9.610 h |
| December | 6.3°C-0.2°C | -0.2°C | 116 | 13.0 | 8.99 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
- Banja Luka in SeptemberBosnia and Herzegovina · 105 kmHigh 22.2°C · Low 12.0°C · 95 mm rain
- Zagreb in SeptemberCroatia · 111 kmHigh 21.8°C · Low 12.6°C · 94 mm rain
- Rijeka in SeptemberCroatia · 126 kmHigh 22.3°C · Low 14.8°C · 177 mm rain
- Split in SeptemberCroatia · 152 kmHigh 24.2°C · Low 16.6°C · 103 mm rain
- Ljubljana in SeptemberSlovenia · 174 kmHigh 19.8°C · Low 11.5°C · 125 mm rain
- Zenica in SeptemberBosnia and Herzegovina · 175 kmHigh 21.9°C · Low 12.5°C · 94 mm rain
- Trieste in SeptemberItaly · 188 kmHigh 22.3°C · Low 14.8°C · 170 mm rain
- Maribor in SeptemberSlovenia · 194 kmHigh 20.5°C · Low 11.9°C · 111 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 Bihać) is explained once on the Bihać year overview and on the Sources, method and limits page.