| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3.2° | -2.9° | 70.6mm | 15.3 | 9 |
| February | 5.7° | -2.3° | 61.9mm | 13.7 | 20 |
| March | 9.8° | -0.3° | 64.9mm | 13.4 | 37 |
| April | 14.8° | 2.5° | 46.1mm | 11.4 | 61 |
| May | 19.1° | 6.9° | 83.2mm | 13.4 | 70 |
| June | 23.1° | 10.6° | 77.9mm | 13 | 74 |
| July | 24.7° | 12.2° | 86.9mm | 13.6 | 73 |
| August | 24.5° | 12° | 78.4mm | 12.2 | 76 |
| September | 19.8° | 8.1° | 59.9mm | 10.7 | 78 |
| October | 14.5° | 5° | 68.7mm | 13.2 | 56 |
| November | 7.7° | 1.1° | 67.5mm | 13.9 | 31 |
| December | 4° | -1.5° | 78.9mm | 17.2 | 14 |
January in Aalen averages a daily high of 3.2°C with nights around -2.9°C. Expect roughly 15.3 wet days totalling 70.6mm. A hard month to visit for comfort alone.
February in Aalen averages a daily high of 5.7°C with nights around -2.3°C. Expect roughly 13.7 wet days totalling 61.9mm. A hard month to visit for comfort alone.
March in Aalen averages a daily high of 9.8°C with nights around -0.3°C. Expect roughly 13.4 wet days totalling 64.9mm. Demanding conditions — pack for it and plan indoor options.
April in Aalen averages a daily high of 14.8°C with nights around 2.5°C. Expect roughly 11.4 wet days totalling 46.1mm. Generally workable, with some weather to plan around.
May in Aalen averages a daily high of 19.1°C with nights around 6.9°C. Expect roughly 13.4 wet days totalling 83.2mm. Generally workable, with some weather to plan around.
June in Aalen averages a daily high of 23.1°C with nights around 10.6°C. Expect roughly 13 wet days totalling 77.9mm. Generally workable, with some weather to plan around.
July in Aalen averages a daily high of 24.7°C with nights around 12.2°C. Expect roughly 13.6 wet days totalling 86.9mm. Generally workable, with some weather to plan around.
August in Aalen averages a daily high of 24.5°C with nights around 12°C. Expect roughly 12.2 wet days totalling 78.4mm. Comfortable conditions for being outdoors all day.
September in Aalen averages a daily high of 19.8°C with nights around 8.1°C. Expect roughly 10.7 wet days totalling 59.9mm. Comfortable conditions for being outdoors all day.
October in Aalen averages a daily high of 14.5°C with nights around 5°C. Expect roughly 13.2 wet days totalling 68.7mm. Generally workable, with some weather to plan around.
November in Aalen averages a daily high of 7.7°C with nights around 1.1°C. Expect roughly 13.9 wet days totalling 67.5mm. A hard month to visit for comfort alone.
December in Aalen averages a daily high of 4°C with nights around -1.5°C. Expect roughly 17.2 wet days totalling 78.9mm. 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. Aalen peaks at 78.
Based on 30 years of records, May–September scores highest for comfort in Aalen, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 24.7°C.
July is the wettest, averaging 86.9mm of rain across roughly 13.6 wet days.
January is the coolest month, with average daily highs around 3.2°C.