| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 9.7° | 2.4° | 168.4mm | 12.1 | 43 |
| February | 11.7° | 3.7° | 141.2mm | 10.2 | 53 |
| March | 15.8° | 6.2° | 134.9mm | 10.9 | 65 |
| April | 20.5° | 9.7° | 114mm | 11.4 | 77 |
| May | 25.7° | 13.6° | 96.8mm | 11.4 | 77 |
| June | 30.6° | 18.1° | 75.3mm | 8.4 | 69 |
| July | 34.1° | 20.8° | 36.1mm | 5.8 | 60 |
| August | 33.9° | 20.9° | 55.5mm | 5.6 | 61 |
| September | 27.6° | 16.2° | 128.7mm | 8.4 | 81 |
| October | 22.2° | 12.1° | 115.5mm | 8.9 | 82 |
| November | 15.5° | 7° | 163.5mm | 11.4 | 63 |
| December | 10.5° | 5.7° | 159.7mm | 12.4 | 45 |
January in Mostar averages a daily high of 9.7°C with nights around 2.4°C. Expect roughly 12.1 wet days totalling 168.4mm. Demanding conditions — pack for it and plan indoor options.
February in Mostar averages a daily high of 11.7°C with nights around 3.7°C. Expect roughly 10.2 wet days totalling 141.2mm. Demanding conditions — pack for it and plan indoor options.
March in Mostar averages a daily high of 15.8°C with nights around 6.2°C. Expect roughly 10.9 wet days totalling 134.9mm. Generally workable, with some weather to plan around.
April in Mostar averages a daily high of 20.5°C with nights around 9.7°C. Expect roughly 11.4 wet days totalling 114mm. Comfortable conditions for being outdoors all day.
May in Mostar averages a daily high of 25.7°C with nights around 13.6°C. Expect roughly 11.4 wet days totalling 96.8mm. Comfortable conditions for being outdoors all day.
June in Mostar averages a daily high of 30.6°C with nights around 18.1°C. Expect roughly 8.4 wet days totalling 75.3mm. Generally workable, with some weather to plan around.
July in Mostar averages a daily high of 34.1°C with nights around 20.8°C. Expect roughly 5.8 wet days totalling 36.1mm. Generally workable, with some weather to plan around.
August in Mostar averages a daily high of 33.9°C with nights around 20.9°C. Expect roughly 5.6 wet days totalling 55.5mm. Generally workable, with some weather to plan around.
September in Mostar averages a daily high of 27.6°C with nights around 16.2°C. Expect roughly 8.4 wet days totalling 128.7mm. Comfortable conditions for being outdoors all day.
October in Mostar averages a daily high of 22.2°C with nights around 12.1°C. Expect roughly 8.9 wet days totalling 115.5mm. Comfortable conditions for being outdoors all day.
November in Mostar averages a daily high of 15.5°C with nights around 7°C. Expect roughly 11.4 wet days totalling 163.5mm. Generally workable, with some weather to plan around.
December in Mostar averages a daily high of 10.5°C with nights around 5.7°C. Expect roughly 12.4 wet days totalling 159.7mm. Demanding conditions — pack for it and plan indoor options.
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. Mostar peaks at 82.
Based on 30 years of records, April–May scores highest for comfort in Mostar, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 34.1°C.
January is the wettest, averaging 168.4mm of rain across roughly 12.1 wet days.
January is the coolest month, with average daily highs around 9.7°C.