| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 4.7° | -0.3° | 98.7mm | 17.1 | 18 |
| February | 6.7° | 0.2° | 87.5mm | 16 | 25 |
| March | 10.3° | 1.8° | 78.7mm | 15.1 | 39 |
| April | 14.8° | 4.4° | 59.7mm | 11.7 | 60 |
| May | 18.8° | 8.1° | 76.6mm | 13.4 | 69 |
| June | 22° | 11.2° | 88.5mm | 13.5 | 73 |
| July | 23.6° | 13° | 87.7mm | 14.5 | 71 |
| August | 23.4° | 12.9° | 96.4mm | 13.6 | 73 |
| September | 19.5° | 9.9° | 79mm | 12.4 | 74 |
| October | 14.6° | 7° | 82.5mm | 14.8 | 53 |
| November | 8.9° | 3.3° | 88.2mm | 16.6 | 34 |
| December | 5.5° | 0.7° | 98.2mm | 18.5 | 22 |
January in Gummersbach averages a daily high of 4.7°C with nights around -0.3°C. Expect roughly 17.1 wet days totalling 98.7mm. A hard month to visit for comfort alone.
February in Gummersbach averages a daily high of 6.7°C with nights around 0.2°C. Expect roughly 16 wet days totalling 87.5mm. A hard month to visit for comfort alone.
March in Gummersbach averages a daily high of 10.3°C with nights around 1.8°C. Expect roughly 15.1 wet days totalling 78.7mm. Demanding conditions — pack for it and plan indoor options.
April in Gummersbach averages a daily high of 14.8°C with nights around 4.4°C. Expect roughly 11.7 wet days totalling 59.7mm. Generally workable, with some weather to plan around.
May in Gummersbach averages a daily high of 18.8°C with nights around 8.1°C. Expect roughly 13.4 wet days totalling 76.6mm. Generally workable, with some weather to plan around.
June in Gummersbach averages a daily high of 22°C with nights around 11.2°C. Expect roughly 13.5 wet days totalling 88.5mm. Generally workable, with some weather to plan around.
July in Gummersbach averages a daily high of 23.6°C with nights around 13°C. Expect roughly 14.5 wet days totalling 87.7mm. Generally workable, with some weather to plan around.
August in Gummersbach averages a daily high of 23.4°C with nights around 12.9°C. Expect roughly 13.6 wet days totalling 96.4mm. Generally workable, with some weather to plan around.
September in Gummersbach averages a daily high of 19.5°C with nights around 9.9°C. Expect roughly 12.4 wet days totalling 79mm. Generally workable, with some weather to plan around.
October in Gummersbach averages a daily high of 14.6°C with nights around 7°C. Expect roughly 14.8 wet days totalling 82.5mm. Demanding conditions — pack for it and plan indoor options.
November in Gummersbach averages a daily high of 8.9°C with nights around 3.3°C. Expect roughly 16.6 wet days totalling 88.2mm. A hard month to visit for comfort alone.
December in Gummersbach averages a daily high of 5.5°C with nights around 0.7°C. Expect roughly 18.5 wet days totalling 98.2mm. 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. Gummersbach peaks at 74.
Based on 30 years of records, May–September scores highest for comfort in Gummersbach, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 23.6°C.
January is the wettest, averaging 98.7mm of rain across roughly 17.1 wet days.
January is the coolest month, with average daily highs around 4.7°C.