| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 5.4° | -0.7° | 48.7mm | 14.1 | 21 |
| February | 8.1° | 0° | 44.3mm | 12 | 35 |
| March | 12.2° | 1.9° | 52.3mm | 12.5 | 50 |
| April | 16.7° | 4.8° | 56.8mm | 11.6 | 66 |
| May | 20.7° | 9.3° | 96.1mm | 14.1 | 72 |
| June | 24.7° | 12.9° | 81.2mm | 12.7 | 75 |
| July | 26.2° | 14.4° | 89.1mm | 12.5 | 75 |
| August | 26° | 14.1° | 85.2mm | 12.1 | 76 |
| September | 21.7° | 10.1° | 58mm | 10.6 | 79 |
| October | 16.5° | 6.8° | 76mm | 12.2 | 64 |
| November | 9.7° | 2.8° | 64.4mm | 13.4 | 40 |
| December | 6.2° | 0.4° | 55.7mm | 14.7 | 24 |
January in Lahr averages a daily high of 5.4°C with nights around -0.7°C. Expect roughly 14.1 wet days totalling 48.7mm. A hard month to visit for comfort alone.
February in Lahr averages a daily high of 8.1°C with nights around 0°C. Expect roughly 12 wet days totalling 44.3mm. Demanding conditions — pack for it and plan indoor options.
March in Lahr averages a daily high of 12.2°C with nights around 1.9°C. Expect roughly 12.5 wet days totalling 52.3mm. Demanding conditions — pack for it and plan indoor options.
April in Lahr averages a daily high of 16.7°C with nights around 4.8°C. Expect roughly 11.6 wet days totalling 56.8mm. Generally workable, with some weather to plan around.
May in Lahr averages a daily high of 20.7°C with nights around 9.3°C. Expect roughly 14.1 wet days totalling 96.1mm. Generally workable, with some weather to plan around.
June in Lahr averages a daily high of 24.7°C with nights around 12.9°C. Expect roughly 12.7 wet days totalling 81.2mm. Comfortable conditions for being outdoors all day.
July in Lahr averages a daily high of 26.2°C with nights around 14.4°C. Expect roughly 12.5 wet days totalling 89.1mm. Comfortable conditions for being outdoors all day.
August in Lahr averages a daily high of 26°C with nights around 14.1°C. Expect roughly 12.1 wet days totalling 85.2mm. Comfortable conditions for being outdoors all day.
September in Lahr averages a daily high of 21.7°C with nights around 10.1°C. Expect roughly 10.6 wet days totalling 58mm. Comfortable conditions for being outdoors all day.
October in Lahr averages a daily high of 16.5°C with nights around 6.8°C. Expect roughly 12.2 wet days totalling 76mm. Generally workable, with some weather to plan around.
November in Lahr averages a daily high of 9.7°C with nights around 2.8°C. Expect roughly 13.4 wet days totalling 64.4mm. Demanding conditions — pack for it and plan indoor options.
December in Lahr averages a daily high of 6.2°C with nights around 0.4°C. Expect roughly 14.7 wet days totalling 55.7mm. 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. Lahr peaks at 79.
Based on 30 years of records, May–September scores highest for comfort in Lahr, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 26.2°C.
May is the wettest, averaging 96.1mm of rain across roughly 14.1 wet days.
January is the coolest month, with average daily highs around 5.4°C.