| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3.9° | -2.8° | 22.3mm | 6.5 | 28 |
| February | 7.5° | -1.5° | 30.4mm | 6.2 | 42 |
| March | 12.1° | 1.6° | 32.8mm | 7.5 | 59 |
| April | 17.3° | 5.9° | 51.9mm | 9.7 | 72 |
| May | 21.5° | 10.3° | 95.1mm | 13.1 | 74 |
| June | 25.3° | 14.1° | 118.9mm | 13.5 | 73 |
| July | 26.9° | 15.7° | 124.9mm | 13 | 74 |
| August | 26.2° | 15.3° | 130mm | 12.1 | 76 |
| September | 21.2° | 11.2° | 92.8mm | 10.5 | 79 |
| October | 16.2° | 7° | 56.3mm | 8.7 | 70 |
| November | 9.5° | 2.8° | 50.2mm | 8.8 | 49 |
| December | 4.2° | -1.8° | 38.5mm | 7.3 | 29 |
January in Graz averages a daily high of 3.9°C with nights around -2.8°C. Expect roughly 6.5 wet days totalling 22.3mm. A hard month to visit for comfort alone.
February in Graz averages a daily high of 7.5°C with nights around -1.5°C. Expect roughly 6.2 wet days totalling 30.4mm. Demanding conditions — pack for it and plan indoor options.
March in Graz averages a daily high of 12.1°C with nights around 1.6°C. Expect roughly 7.5 wet days totalling 32.8mm. Generally workable, with some weather to plan around.
April in Graz averages a daily high of 17.3°C with nights around 5.9°C. Expect roughly 9.7 wet days totalling 51.9mm. Generally workable, with some weather to plan around.
May in Graz averages a daily high of 21.5°C with nights around 10.3°C. Expect roughly 13.1 wet days totalling 95.1mm. Generally workable, with some weather to plan around.
June in Graz averages a daily high of 25.3°C with nights around 14.1°C. Expect roughly 13.5 wet days totalling 118.9mm. Generally workable, with some weather to plan around.
July in Graz averages a daily high of 26.9°C with nights around 15.7°C. Expect roughly 13 wet days totalling 124.9mm. Generally workable, with some weather to plan around.
August in Graz averages a daily high of 26.2°C with nights around 15.3°C. Expect roughly 12.1 wet days totalling 130mm. Comfortable conditions for being outdoors all day.
September in Graz averages a daily high of 21.2°C with nights around 11.2°C. Expect roughly 10.5 wet days totalling 92.8mm. Comfortable conditions for being outdoors all day.
October in Graz averages a daily high of 16.2°C with nights around 7°C. Expect roughly 8.7 wet days totalling 56.3mm. Generally workable, with some weather to plan around.
November in Graz averages a daily high of 9.5°C with nights around 2.8°C. Expect roughly 8.8 wet days totalling 50.2mm. Demanding conditions — pack for it and plan indoor options.
December in Graz averages a daily high of 4.2°C with nights around -1.8°C. Expect roughly 7.3 wet days totalling 38.5mm. 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. Graz peaks at 79.
Based on 30 years of records, April–September scores highest for comfort in Graz, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 26.9°C.
August is the wettest, averaging 130mm of rain across roughly 12.1 wet days.
January is the coolest month, with average daily highs around 3.9°C.