| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4.4° | -2.3° | 45.8mm | 10.4 | 23 |
| February | 7.6° | -1.2° | 43mm | 9.4 | 37 |
| March | 12.7° | 1.8° | 43.9mm | 9.5 | 57 |
| April | 18.3° | 6.2° | 51.6mm | 10 | 75 |
| May | 23.1° | 11.1° | 77.1mm | 11.7 | 77 |
| June | 27° | 14.7° | 79.1mm | 10.5 | 79 |
| July | 28.9° | 16° | 64.3mm | 8.7 | 75 |
| August | 28.8° | 15.7° | 67.1mm | 7.8 | 77 |
| September | 23.4° | 11.5° | 65.3mm | 9.3 | 81 |
| October | 18.3° | 7.2° | 56.5mm | 8.3 | 78 |
| November | 11.2° | 3.2° | 58mm | 10.1 | 52 |
| December | 5.1° | -1° | 56.9mm | 10.3 | 27 |
January in Osijek averages a daily high of 4.4°C with nights around -2.3°C. Expect roughly 10.4 wet days totalling 45.8mm. A hard month to visit for comfort alone.
February in Osijek averages a daily high of 7.6°C with nights around -1.2°C. Expect roughly 9.4 wet days totalling 43mm. Demanding conditions — pack for it and plan indoor options.
March in Osijek averages a daily high of 12.7°C with nights around 1.8°C. Expect roughly 9.5 wet days totalling 43.9mm. Generally workable, with some weather to plan around.
April in Osijek averages a daily high of 18.3°C with nights around 6.2°C. Expect roughly 10 wet days totalling 51.6mm. Comfortable conditions for being outdoors all day.
May in Osijek averages a daily high of 23.1°C with nights around 11.1°C. Expect roughly 11.7 wet days totalling 77.1mm. Comfortable conditions for being outdoors all day.
June in Osijek averages a daily high of 27°C with nights around 14.7°C. Expect roughly 10.5 wet days totalling 79.1mm. Comfortable conditions for being outdoors all day.
July in Osijek averages a daily high of 28.9°C with nights around 16°C. Expect roughly 8.7 wet days totalling 64.3mm. Comfortable conditions for being outdoors all day.
August in Osijek averages a daily high of 28.8°C with nights around 15.7°C. Expect roughly 7.8 wet days totalling 67.1mm. Comfortable conditions for being outdoors all day.
September in Osijek averages a daily high of 23.4°C with nights around 11.5°C. Expect roughly 9.3 wet days totalling 65.3mm. Comfortable conditions for being outdoors all day.
October in Osijek averages a daily high of 18.3°C with nights around 7.2°C. Expect roughly 8.3 wet days totalling 56.5mm. Comfortable conditions for being outdoors all day.
November in Osijek averages a daily high of 11.2°C with nights around 3.2°C. Expect roughly 10.1 wet days totalling 58mm. Demanding conditions — pack for it and plan indoor options.
December in Osijek averages a daily high of 5.1°C with nights around -1°C. Expect roughly 10.3 wet days totalling 56.9mm. A hard month to visit for comfort alone.
Each month scores out of 100. It starts at 100 and loses points for daytime highs outside a 20–27°C band, for wet days, and for nights below 2°C. Nothing else is weighted in — no crowd data, no prices, no opinion. Osijek peaks at 81.
Based on 30 years of records, April–October scores highest for comfort in Osijek, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.9°C.
June is the wettest, averaging 79.1mm of rain across roughly 10.5 wet days.
January is the coolest month, with average daily highs around 4.4°C.