| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 5.5° | 0.6° | 74mm | 17.9 | 21 |
| February | 6.5° | 0.6° | 57mm | 14.7 | 25 |
| March | 10.5° | 2.1° | 58.8mm | 13.4 | 43 |
| April | 15.3° | 4.6° | 43.2mm | 11.8 | 61 |
| May | 19.5° | 8.1° | 59.8mm | 11.8 | 75 |
| June | 22.2° | 11.2° | 80.9mm | 12.8 | 74 |
| July | 24.5° | 13.2° | 94.3mm | 15.5 | 70 |
| August | 23.9° | 12.9° | 89.3mm | 14.3 | 71 |
| September | 20.2° | 10.2° | 60.6mm | 11.3 | 77 |
| October | 15.3° | 7.2° | 69.5mm | 14.5 | 56 |
| November | 10.1° | 4.4° | 79mm | 15.9 | 38 |
| December | 6.5° | 1.7° | 86.8mm | 18.9 | 26 |
January in Gelsenkirchen averages a daily high of 5.5°C with nights around 0.6°C. Expect roughly 17.9 wet days totalling 74mm. A hard month to visit for comfort alone.
February in Gelsenkirchen averages a daily high of 6.5°C with nights around 0.6°C. Expect roughly 14.7 wet days totalling 57mm. A hard month to visit for comfort alone.
March in Gelsenkirchen averages a daily high of 10.5°C with nights around 2.1°C. Expect roughly 13.4 wet days totalling 58.8mm. Demanding conditions — pack for it and plan indoor options.
April in Gelsenkirchen averages a daily high of 15.3°C with nights around 4.6°C. Expect roughly 11.8 wet days totalling 43.2mm. Generally workable, with some weather to plan around.
May in Gelsenkirchen averages a daily high of 19.5°C with nights around 8.1°C. Expect roughly 11.8 wet days totalling 59.8mm. Comfortable conditions for being outdoors all day.
June in Gelsenkirchen averages a daily high of 22.2°C with nights around 11.2°C. Expect roughly 12.8 wet days totalling 80.9mm. Generally workable, with some weather to plan around.
July in Gelsenkirchen averages a daily high of 24.5°C with nights around 13.2°C. Expect roughly 15.5 wet days totalling 94.3mm. Generally workable, with some weather to plan around.
August in Gelsenkirchen averages a daily high of 23.9°C with nights around 12.9°C. Expect roughly 14.3 wet days totalling 89.3mm. Generally workable, with some weather to plan around.
September in Gelsenkirchen averages a daily high of 20.2°C with nights around 10.2°C. Expect roughly 11.3 wet days totalling 60.6mm. Comfortable conditions for being outdoors all day.
October in Gelsenkirchen averages a daily high of 15.3°C with nights around 7.2°C. Expect roughly 14.5 wet days totalling 69.5mm. Generally workable, with some weather to plan around.
November in Gelsenkirchen averages a daily high of 10.1°C with nights around 4.4°C. Expect roughly 15.9 wet days totalling 79mm. Demanding conditions — pack for it and plan indoor options.
December in Gelsenkirchen averages a daily high of 6.5°C with nights around 1.7°C. Expect roughly 18.9 wet days totalling 86.8mm. 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. Gelsenkirchen peaks at 77.
Based on 30 years of records, May–September scores highest for comfort in Gelsenkirchen, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 24.5°C.
July is the wettest, averaging 94.3mm of rain across roughly 15.5 wet days.
January is the coolest month, with average daily highs around 5.5°C.