| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 3.9° | -1.5° | 40.2mm | 14.3 | 15 |
| February | 6.2° | -0.8° | 30.9mm | 12 | 28 |
| March | 10° | 1° | 33.1mm | 12 | 43 |
| April | 15.5° | 4.2° | 27.5mm | 9.9 | 66 |
| May | 20.2° | 8.5° | 52.8mm | 11.8 | 76 |
| June | 23.9° | 12.1° | 49.7mm | 10.8 | 78 |
| July | 25.6° | 13.9° | 70.4mm | 12.4 | 75 |
| August | 25.6° | 13.6° | 53.6mm | 10.7 | 79 |
| September | 20.9° | 10.2° | 50.6mm | 10.2 | 80 |
| October | 15.1° | 6.4° | 40.1mm | 12.2 | 60 |
| November | 8.6° | 2.5° | 43.5mm | 12.8 | 38 |
| December | 4.8° | -0.4° | 42.1mm | 15 | 18 |
January in Dessau averages a daily high of 3.9°C with nights around -1.5°C. Expect roughly 14.3 wet days totalling 40.2mm. A hard month to visit for comfort alone.
February in Dessau averages a daily high of 6.2°C with nights around -0.8°C. Expect roughly 12 wet days totalling 30.9mm. A hard month to visit for comfort alone.
March in Dessau averages a daily high of 10°C with nights around 1°C. Expect roughly 12 wet days totalling 33.1mm. Demanding conditions — pack for it and plan indoor options.
April in Dessau averages a daily high of 15.5°C with nights around 4.2°C. Expect roughly 9.9 wet days totalling 27.5mm. Generally workable, with some weather to plan around.
May in Dessau averages a daily high of 20.2°C with nights around 8.5°C. Expect roughly 11.8 wet days totalling 52.8mm. Comfortable conditions for being outdoors all day.
June in Dessau averages a daily high of 23.9°C with nights around 12.1°C. Expect roughly 10.8 wet days totalling 49.7mm. Comfortable conditions for being outdoors all day.
July in Dessau averages a daily high of 25.6°C with nights around 13.9°C. Expect roughly 12.4 wet days totalling 70.4mm. Comfortable conditions for being outdoors all day.
August in Dessau averages a daily high of 25.6°C with nights around 13.6°C. Expect roughly 10.7 wet days totalling 53.6mm. Comfortable conditions for being outdoors all day.
September in Dessau averages a daily high of 20.9°C with nights around 10.2°C. Expect roughly 10.2 wet days totalling 50.6mm. Comfortable conditions for being outdoors all day.
October in Dessau averages a daily high of 15.1°C with nights around 6.4°C. Expect roughly 12.2 wet days totalling 40.1mm. Generally workable, with some weather to plan around.
November in Dessau averages a daily high of 8.6°C with nights around 2.5°C. Expect roughly 12.8 wet days totalling 43.5mm. Demanding conditions — pack for it and plan indoor options.
December in Dessau averages a daily high of 4.8°C with nights around -0.4°C. Expect roughly 15 wet days totalling 42.1mm. 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. Dessau peaks at 80.
Based on 30 years of records, May–September scores highest for comfort in Dessau, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 25.6°C.
July is the wettest, averaging 70.4mm of rain across roughly 12.4 wet days.
January is the coolest month, with average daily highs around 3.9°C.