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Mostar, Bosnia and Herzegovina climate
Cfa Humid subtropical
Mostar has a seasonal mild-temperate climate (Humid subtropical, Köppen Cfa). The hottest month is August with an average daily high near 34°C, while the coldest is January averaging around 3°C at night. Precipitation totals about 1452 mm a year and is strongly seasonal — January alone averages 181 mm while August barely receives 43 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)Mostar climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 16 | 21 | 26 | 30 | 33 | 34 | 27 | 22 | 15 | 10 |
| Avg temp (°C) | 6 | 7 | 11 | 15 | 20 | 24 | 27 | 27 | 22 | 17 | 11 | 7 |
| Avg low (°C) | 3 | 3 | 6 | 10 | 14 | 18 | 20 | 20 | 16 | 12 | 7 | 4 |
| Precipitation (mm) | 181 | 148 | 146 | 120 | 90 | 86 | 45 | 43 | 152 | 132 | 148 | 162 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 10 | 11 | 16 | 21 | 26 | 30 |
| Avg temp (°C) | 6 | 7 | 11 | 15 | 20 | 24 |
| Avg low (°C) | 3 | 3 | 6 | 10 | 14 | 18 |
| Precipitation (mm) | 181 | 148 | 146 | 120 | 90 | 86 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 33 | 34 | 27 | 22 | 15 | 10 |
| Avg temp (°C) | 27 | 27 | 22 | 17 | 11 | 7 |
| Avg low (°C) | 20 | 20 | 16 | 12 | 7 | 4 |
| Precipitation (mm) | 45 | 43 | 152 | 132 | 148 | 162 |
How often — frequency of weather events
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 8 | 9 | 7 | 6 | 5 | 4 | 6 | 7 | 9 | 9 |
| Days with high ≥ 32°C (days) | — | — | — | — | 2 | 8 | 14 | 15 | 4 | — | — | — |
| Days with low ≤ 0°C (days) | 5 | 4 | 1 | 0.1 | — | — | — | — | — | — | 0.6 | 3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 8 | 8 | 8 | 9 | 7 | 6 |
| Days with high ≥ 32°C (days) | — | — | — | — | 2 | 8 |
| Days with low ≤ 0°C (days) | 5 | 4 | 1 | 0.1 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Days with measurable rain (days) | 5 | 4 | 6 | 7 | 9 | 9 |
| Days with high ≥ 32°C (days) | 14 | 15 | 4 | — | — | — |
| Days with low ≤ 0°C (days) | — | — | — | — | 0.6 | 3 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 68 | 68 | 68 | 65 | 55 | 43 | 41 | 55 | 60 | 68 | 66 |
| Relative humidity (%) | 89 | 87 | 83 | 79 | 76 | 69 | 57 | 54 | 68 | 78 | 87 | 89 |
| Wind speed (mph) | 5.5 | 6.0 | 5.9 | 4.9 | 4.4 | 4.0 | 4.3 | 4.1 | 4.3 | 4.5 | 5.1 | 5.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 67 | 68 | 68 | 68 | 65 | 55 |
| Relative humidity (%) | 89 | 87 | 83 | 79 | 76 | 69 |
| Wind speed (mph) | 5.5 | 6.0 | 5.9 | 4.9 | 4.4 | 4.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 43 | 41 | 55 | 60 | 68 | 66 |
| Relative humidity (%) | 57 | 54 | 68 | 78 | 87 | 89 |
| Wind speed (mph) | 4.3 | 4.1 | 4.3 | 4.5 | 5.1 | 5.6 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 13 years of daily observations at Mostar, a weather station, inside the city. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.