Climate averages 1991–2020
Mostar weather
in December.
A cool, very wet month: the 11th warmest and the 11th driest of the year.
Long-term climate patterns, not a forecast for a particular trip.
December is a cool month in Mostar: daytime highs average 9.0°C and nights cool to about 1.0°C. By daytime temperature it is the 11th warmest of the 12 months.
Expect about 191 mm of rain on roughly 13 days, which makes December a very wet month (the 11th driest of the 12 months). Daylight, from sunrise to sunset, lasts about 9 h 02 min on an average December day.
The nearest other city in this atlas is Ilidža (68 km away). In December its highs average 5.6°C, 3.4°C cooler than Mostar, with 110 mm of rain.
Among the 7 cities listed in Bosnia and Herzegovina, Mostar ranks 1st of 7 for the warmest December highs and 7th of 7 for the driest December (rainfall, lowest first). The mean December high of those 7 cities is 6.3°C; Mostar is 2.7°C warmer than that mean.
From December to January, average highs fall by 0.9°C to 8.1°C, and monthly rainfall falls from 191 mm to 138 mm.
The annual picture
December 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
Mostar climate table
| Month | Average highHigh / low | Average low | Rainfall mm/month | Rain days ≥1 mm/day | Daylight hours/dayDaylight h/day |
|---|---|---|---|---|---|
| January | 8.1°C-0.2°C | -0.2°C | 138 | 11.1 | 9.49 h |
| February | 9.3°C0.0°C | 0.0°C | 136 | 11.0 | 10.510 h |
| March | 13.1°C3.0°C | 3.0°C | 133 | 11.7 | 11.912 h |
| April | 17.4°C6.7°C | 6.7°C | 147 | 13.1 | 13.413 h |
| May | 22.1°C11.1°C | 11.1°C | 109 | 12.4 | 14.715 h |
| June | 26.5°C15.1°C | 15.1°C | 72 | 9.7 | 15.315 h |
| July | 29.6°C17.5°C | 17.5°C | 45 | 6.8 | 15.115 h |
| August | 30.2°C17.9°C | 17.9°C | 53 | 6.6 | 14.014 h |
| September | 24.2°C13.8°C | 13.8°C | 135 | 9.1 | 12.513 h |
| October | 19.2°C9.6°C | 9.6°C | 180 | 10.8 | 11.111 h |
| November | 13.8°C5.5°C | 5.5°C | 222 | 13.2 | 9.710 h |
| December, selected | 9.0°C1.0°C | 1.0°C | 191 | 12.5 | 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
December in nearby cities
- Ilidža in DecemberBosnia and Herzegovina · 68 kmHigh 5.6°C · Low -1.3°C · 110 mm rain
- Sarajevo in DecemberBosnia and Herzegovina · 71 kmHigh 5.5°C · Low -1.7°C · 110 mm rain
- Zenica in DecemberBosnia and Herzegovina · 96 kmHigh 6.1°C · Low -1.4°C · 92 mm rain
- Split in DecemberCroatia · 112 kmHigh 11.1°C · Low 5.1°C · 173 mm rain
- Tuzla in DecemberBosnia and Herzegovina · 150 kmHigh 5.8°C · Low -2.0°C · 77 mm rain
- Podgorica in DecemberMontenegro · 155 kmHigh 9.6°C · Low 1.9°C · 271 mm rain
- Banja Luka in DecemberBosnia and Herzegovina · 167 kmHigh 6.0°C · Low -1.3°C · 82 mm rain
- Shkodër in DecemberAlbania · 199 kmHigh 10.1°C · Low 3.6°C · 225 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 Mostar) is explained once on the Mostar year overview and on the Sources, method and limits page.