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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 92°F, while the coldest is January averaging around 37°F at night. Precipitation totals about 57 inches a year and is strongly seasonal — January alone averages 7.1 inches while August barely receives 1.69 inches.
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 (°F) | 49 | 52 | 60 | 69 | 78 | 86 | 92 | 92 | 81 | 71 | 60 | 50 |
| Avg temp (°F) | 43 | 45 | 51 | 60 | 67 | 75 | 80 | 81 | 71 | 62 | 53 | 45 |
| Avg low (°F) | 37 | 37 | 42 | 50 | 56 | 64 | 69 | 68 | 61 | 53 | 45 | 39 |
| Precipitation (in) | 7.1 | 5.8 | 5.7 | 4.7 | 3.5 | 3.4 | 1.8 | 1.7 | 6.0 | 5.2 | 5.8 | 6.4 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 49 | 52 | 60 | 69 | 78 | 86 |
| Avg temp (°F) | 43 | 45 | 51 | 60 | 67 | 75 |
| Avg low (°F) | 37 | 37 | 42 | 50 | 56 | 64 |
| Precipitation (in) | 7.1 | 5.8 | 5.7 | 4.7 | 3.5 | 3.4 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 92 | 92 | 81 | 71 | 60 | 50 |
| Avg temp (°F) | 80 | 81 | 71 | 62 | 53 | 45 |
| Avg low (°F) | 69 | 68 | 61 | 53 | 45 | 39 |
| Precipitation (in) | 1.8 | 1.7 | 6.0 | 5.2 | 5.8 | 6.4 |
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 ≥ 90°F (days) | — | — | — | — | 2 | 8 | 14 | 15 | 4 | — | — | — |
| Days with low ≤ 32°F (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 ≥ 90°F (days) | — | — | — | — | 2 | 8 |
| Days with low ≤ 32°F (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 ≥ 90°F (days) | 14 | 15 | 4 | — | — | — |
| Days with low ≤ 32°F (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.