| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3.4° | -1.1° | 120.6mm | 18.6 | 12 |
| February | 5° | -0.6° | 102mm | 16.6 | 18 |
| March | 8.5° | 1° | 89.5mm | 15.8 | 32 |
| April | 13° | 3.7° | 61mm | 12.2 | 53 |
| May | 17.1° | 7.3° | 79.5mm | 14.2 | 62 |
| June | 20.4° | 10.4° | 73.7mm | 13.9 | 72 |
| July | 21.9° | 12.3° | 100.5mm | 15.5 | 70 |
| August | 21.9° | 12.2° | 96.5mm | 14.4 | 71 |
| September | 18° | 9.3° | 89mm | 13.4 | 67 |
| October | 13.3° | 6.4° | 90.1mm | 15.3 | 49 |
| November | 7.7° | 2.7° | 95.4mm | 17.8 | 31 |
| December | 4.3° | -0.1° | 115.3mm | 19.5 | 17 |
January in Hagen averages a daily high of 3.4°C with nights around -1.1°C. Expect roughly 18.6 wet days totalling 120.6mm. A hard month to visit for comfort alone.
February in Hagen averages a daily high of 5°C with nights around -0.6°C. Expect roughly 16.6 wet days totalling 102mm. A hard month to visit for comfort alone.
March in Hagen averages a daily high of 8.5°C with nights around 1°C. Expect roughly 15.8 wet days totalling 89.5mm. A hard month to visit for comfort alone.
April in Hagen averages a daily high of 13°C with nights around 3.7°C. Expect roughly 12.2 wet days totalling 61mm. Demanding conditions — pack for it and plan indoor options.
May in Hagen averages a daily high of 17.1°C with nights around 7.3°C. Expect roughly 14.2 wet days totalling 79.5mm. Generally workable, with some weather to plan around.
June in Hagen averages a daily high of 20.4°C with nights around 10.4°C. Expect roughly 13.9 wet days totalling 73.7mm. Generally workable, with some weather to plan around.
July in Hagen averages a daily high of 21.9°C with nights around 12.3°C. Expect roughly 15.5 wet days totalling 100.5mm. Generally workable, with some weather to plan around.
August in Hagen averages a daily high of 21.9°C with nights around 12.2°C. Expect roughly 14.4 wet days totalling 96.5mm. Generally workable, with some weather to plan around.
September in Hagen averages a daily high of 18°C with nights around 9.3°C. Expect roughly 13.4 wet days totalling 89mm. Generally workable, with some weather to plan around.
October in Hagen averages a daily high of 13.3°C with nights around 6.4°C. Expect roughly 15.3 wet days totalling 90.1mm. Demanding conditions — pack for it and plan indoor options.
November in Hagen averages a daily high of 7.7°C with nights around 2.7°C. Expect roughly 17.8 wet days totalling 95.4mm. A hard month to visit for comfort alone.
December in Hagen averages a daily high of 4.3°C with nights around -0.1°C. Expect roughly 19.5 wet days totalling 115.3mm. 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. Hagen peaks at 72.
Based on 30 years of records, June–September scores highest for comfort in Hagen, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 21.9°C.
January is the wettest, averaging 120.6mm of rain across roughly 18.6 wet days.
January is the coolest month, with average daily highs around 3.4°C.