The best time to visit Serbia is Apr–May, Sep–Oct. Month by month, the verdicts rate Apr–Oct as comfortable on both daytime heat and rainfall — 7 months in all.
Hot dry summers, wet winters
| Month | High °C | High °F | Rainy days | Verdict |
|---|---|---|---|---|
| January | 3.8 | 39 | 28% | Too cold |
| February | 6.7 | 44 | 29% | Fair |
| March | 12.2 | 54 | 28% | Fair |
| April | 18.0 | 64 | 33% | Go |
| May | 23.0 | 73 | 42% | Go |
| June | 27.3 | 81 | 43% | Go |
| July | 30.1 | 86 | 33% | Go |
| August | 30.6 | 87 | 28% | Go |
| September | 24.9 | 77 | 29% | Go |
| October | 18.8 | 66 | 26% | Go |
| November | 11.6 | 53 | 29% | Fair |
| December | 4.8 | 41 | 30% | 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.
October is the driest month, with rain on 26% of days and daytime highs near 18.8°C (66°F). June is the wettest, at 43%. Temperature swings hard across the year — 26.8°C between August (30.6°C / 87°F) and January (3.8°C / 39°F) — so packing for the wrong month is the main risk. The record rules out too cold in Dec–Jan.