| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 5.4° | 0° | 55mm | 9 | 32 |
| February | 8.4° | 1.6° | 48.9mm | 8.6 | 45 |
| March | 13.1° | 4.5° | 50.7mm | 9 | 60 |
| April | 18.2° | 8.8° | 61mm | 11.1 | 72 |
| May | 22.8° | 13.1° | 83.3mm | 12.7 | 75 |
| June | 27.1° | 16.9° | 83.5mm | 11.1 | 77 |
| July | 28.9° | 18.6° | 87.9mm | 10.1 | 72 |
| August | 28.1° | 18.3° | 83.4mm | 8.4 | 79 |
| September | 22.4° | 13.8° | 107.7mm | 10.8 | 78 |
| October | 17.2° | 9.7° | 82mm | 8.9 | 73 |
| November | 11° | 5.4° | 85.4mm | 11.3 | 49 |
| December | 6.1° | 1° | 65.8mm | 10.3 | 33 |
January in Zagreb averages a daily high of 5.4°C with nights around 0°C. Expect roughly 9 wet days totalling 55mm. A hard month to visit for comfort alone.
February in Zagreb averages a daily high of 8.4°C with nights around 1.6°C. Expect roughly 8.6 wet days totalling 48.9mm. Demanding conditions — pack for it and plan indoor options.
March in Zagreb averages a daily high of 13.1°C with nights around 4.5°C. Expect roughly 9 wet days totalling 50.7mm. Generally workable, with some weather to plan around.
April in Zagreb averages a daily high of 18.2°C with nights around 8.8°C. Expect roughly 11.1 wet days totalling 61mm. Generally workable, with some weather to plan around.
May in Zagreb averages a daily high of 22.8°C with nights around 13.1°C. Expect roughly 12.7 wet days totalling 83.3mm. Comfortable conditions for being outdoors all day.
June in Zagreb averages a daily high of 27.1°C with nights around 16.9°C. Expect roughly 11.1 wet days totalling 83.5mm. Comfortable conditions for being outdoors all day.
July in Zagreb averages a daily high of 28.9°C with nights around 18.6°C. Expect roughly 10.1 wet days totalling 87.9mm. Generally workable, with some weather to plan around.
August in Zagreb averages a daily high of 28.1°C with nights around 18.3°C. Expect roughly 8.4 wet days totalling 83.4mm. Comfortable conditions for being outdoors all day.
September in Zagreb averages a daily high of 22.4°C with nights around 13.8°C. Expect roughly 10.8 wet days totalling 107.7mm. Comfortable conditions for being outdoors all day.
October in Zagreb averages a daily high of 17.2°C with nights around 9.7°C. Expect roughly 8.9 wet days totalling 82mm. Generally workable, with some weather to plan around.
November in Zagreb averages a daily high of 11°C with nights around 5.4°C. Expect roughly 11.3 wet days totalling 85.4mm. Demanding conditions — pack for it and plan indoor options.
December in Zagreb averages a daily high of 6.1°C with nights around 1°C. Expect roughly 10.3 wet days totalling 65.8mm. 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. Zagreb peaks at 79.
Based on 30 years of records, April–October scores highest for comfort in Zagreb, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.9°C.
September is the wettest, averaging 107.7mm of rain across roughly 10.8 wet days.
January is the coolest month, with average daily highs around 5.4°C.