Mostar climate
Mostar (Bosnia and Herzegovina) has a hot-summer Mediterranean climate (Köppen Csa). The average temperature over the year is 15 °C59 °F, and about 983 mm39 in of precipitation falls in an average year.
Temperature by month
Precipitation by month
Mostar climate table
| Month | High °C°F | Low °C°F | Mean °C°F | Precip. mmin |
|---|---|---|---|---|
| Jan | 846 | 134 | 440 | 1054.1 |
| Feb | 949 | 135 | 542 | 993.9 |
| Mar | 1356 | 440 | 948 | 883.5 |
| Apr | 1965 | 847 | 1456 | 732.9 |
| May | 2374 | 1355 | 1864 | 632.5 |
| Jun | 2883 | 1763 | 2373 | 522.1 |
| Jul | 3391 | 1967 | 2679 | 321.2 |
| Aug | 3392 | 2067 | 2780 | 401.6 |
| Sep | 2780 | 1458 | 2069 | 843.3 |
| Oct | 2170 | 1051 | 1660 | 953.7 |
| Nov | 1559 | 744 | 1151 | 1285.0 |
| Dec | 948 | 236 | 642 | 1234.9 |
| Year | 3392 | 134 | 1559 | 98339 |
“Year” row: highest monthly high, lowest monthly low, annual mean and annual total.
| Month | Humid. | Cloud | Solar | Daylight |
|---|---|---|---|---|
| Jan | 89% | 74% | 1.5 | 9:18 |
| Feb | 88% | 75% | 2.2 | 10:27 |
| Mar | 84% | 73% | 3.3 | 11:48 |
| Apr | 78% | 68% | 4.5 | 13:21 |
| May | 75% | 66% | 5.6 | 14:40 |
| Jun | 69% | 55% | 6.5 | 15:23 |
| Jul | 56% | 41% | 6.7 | 15:05 |
| Aug | 53% | 40% | 5.9 | 13:57 |
| Sep | 67% | 55% | 4.3 | 12:26 |
| Oct | 78% | 59% | 2.9 | 10:56 |
| Nov | 86% | 69% | 1.7 | 9:37 |
| Dec | 89% | 70% | 1.3 | 8:59 |
Humid. = average relative humidity at 2 m; cloud = average cloud amount; solar = average daily solar energy reaching the ground in kWh/m² (all-sky); daylight in hours:minutes, calculated for the 15th of each month.
What the climate of Mostar is like
The warmest month is August, with an average high of 33 °C92 °F and a low of 20 °C67 °F. The coldest is January, when highs average 8 °C46 °F and lows 1 °C34 °F. Seasons are strongly marked: the warmest month is on average 22.1 °C39.8 °F warmer than the coldest.
Annual precipitation is moderate at about 983 mm39 in. The wettest three-month stretch is November–January, which brings 36% of the annual total. The wettest month is November (128 mm5.0 in), the driest is July (32 mm1.2 in).
Relative humidity ranges from 53% in August to 89% in January. The clearest skies (lowest average cloud amount, 40%) are typical of August. Average wind speed near the ground ranges from 6 km/h (4 mph) in June to 10 km/h (6 mph) in February. Daylight lasts from about 9.0 hours in December to 15.4 hours in June.
Best time to visit Mostar
Based on these averages, the most comfortable months for sightseeing and outdoor activities are May and June and September and October: average highs of 21 °C70 °F to 28 °C83 °F with 52 mm2.1 in to 95 mm3.7 in of precipitation per month.
The most challenging month is January, which is cold, with average highs of 8 °C46 °F.
Comfort score: months are ranked by how close they come to an average high of 21–28 °C (70–82 °F), lows above 5 °C (41 °F), little precipitation and moderate humidity. The best-ranked months of each place are recommended, even where none meets all of these. These are general rules of thumb applied to long-term averages.
What to pack for Mostar
- Winter (December–February) — highs 846 to 9 °C49 °F, lows 134 to 2 °C36 °F, about 109 mm4.3 in of precipitation a month. Pack a warm coat, layers and closed shoes and an umbrella or light rain jacket.
- Spring (March–May) — highs 1356 to 23 °C74 °F, lows 440 to 13 °C55 °F, about 75 mm2.9 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket.
- Summer (June–August) — highs 2883 to 33 °C92 °F, lows 1763 to 20 °C67 °F, about 41 mm1.6 in of precipitation a month. Pack very light, breathable clothing, a sun hat and plenty of water.
- Autumn (September–November) — highs 1559 to 27 °C80 °F, lows 744 to 14 °C58 °F, about 102 mm4.0 in of precipitation a month. Pack light layers — T-shirts plus a light sweater or jacket, an extra layer for the cooler mornings and evenings and an umbrella or light rain jacket.
How Mostar compares
Compared with Sarajevo, about 71 km to the northeast, Mostar is on average 3.7 °C6.7 °F warmer and receives 9% more precipitation (983 mm39 in vs 900 mm35 in). The difference is largest in July (4.6 °C8.3 °F warmer).
Of the 5 places in Bosnia and Herzegovina covered by World Climates, Mostar is the warmest by annual mean temperature and the wettest by annual precipitation. See all of them on the Bosnia and Herzegovina climate page.
Places in other countries with the most similar temperature and rainfall pattern: Florence (Italy, Cfa), Kutaisi (Georgia, Cfa) and Arezzo (Italy, Csa).
Nearby places
- Sarajevo 71 km · 11 °C52 °F · 900 mm35 in
- Zenica 96 km · 12 °C54 °F · 900 mm35 in
- Split 112 km · 17 °C62 °F · 921 mm36 in
- Tuzla 150 km · 12 °C54 °F · 838 mm33 in
- Podgorica 155 km · 16 °C60 °F · 1,419 mm56 in
- Banja Luka 167 km · 12 °C54 °F · 857 mm34 in
- Čačak 213 km · 12 °C54 °F · 765 mm30 in
- Mitrovicë 253 km · 11 °C52 °F · 936 mm37 in
Frequently asked questions
What is the warmest month in Mostar?
August is the warmest month in Mostar, with an average high of 33 °C (92 °F) and an average low of 20 °C (67 °F).
What is the coldest month in Mostar?
January is the coldest month, with an average high of 8 °C (46 °F) and an average low of 1 °C (34 °F).
When does it rain the most in Mostar?
November is the wettest month with about 128 mm (5.0 in) of precipitation; July is the driest with about 32 mm (1.2 in).
What is the best time to visit Mostar?
Judging by long-term averages, the most comfortable months are May and June and September and October.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.
The grid cell’s average elevation is 807 m, while Mostar lies at about 66 m. Temperatures on this page were therefore adjusted by +4.8 °C8.7 °F using the standard lapse rate of 6.5 °C per 1,000 m.