The best time to visit Bosnia & Herzegovina is Jun–Sep. Month by month, the verdicts rate Jul–Oct as comfortable on both daytime heat and rainfall — 4 months in all.
Hot dry summers, wet winters
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 2.6 | 37 | 38% | Too cold |
| February | 3.7 | 39 | 40% | Too cold |
| March | 8.0 | 46 | 39% | Fair |
| April | 13.1 | 56 | 43% | Fair |
| May | 17.8 | 64 | 45% | Fair |
| June | 21.7 | 71 | 45% | Fair |
| July | 24.9 | 77 | 35% | Go |
| August | 26.2 | 79 | 29% | Go |
| September | 20.5 | 69 | 34% | Go |
| October | 15.5 | 60 | 36% | Go |
| November | 9.4 | 49 | 43% | Fair |
| December | 3.6 | 38 | 42% | Too cold |
Verdict combines mean daytime high with rainy-day frequency. “Rainy days” is the share of days in the month with at least 1 mm of rain.
August is the driest month, with rain on 29% of days and daytime highs near 26.2°C (79°F). May is the wettest, at 45%. Temperature swings hard across the year — 23.6°C between August (26.2°C / 79°F) and January (2.6°C / 37°F) — so packing for the wrong month is the main risk. The record rules out too cold in Dec–Feb.