| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | 0.3° | -5.5° | 37.6mm | 13.4 | 7 |
| February | 1.4° | -5.1° | 27.9mm | 10.8 | 13 |
| March | 5.3° | -3.2° | 22mm | 9.1 | 27 |
| April | 11.4° | -0.1° | 26.2mm | 8.2 | 53 |
| May | 17.1° | 4.6° | 40.9mm | 10.3 | 70 |
| June | 21.1° | 9.1° | 53.7mm | 10.4 | 79 |
| July | 23.2° | 11.6° | 60.8mm | 11.6 | 77 |
| August | 22° | 10.6° | 78.1mm | 12.4 | 75 |
| September | 17.1° | 7° | 41.5mm | 9.5 | 72 |
| October | 10.4° | 3° | 52.2mm | 12.2 | 45 |
| November | 5.2° | 0° | 39.9mm | 14.3 | 21 |
| December | 1.5° | -4.1° | 41.2mm | 16.2 | 6 |
January in Eskilstuna averages a daily high of 0.3°C with nights around -5.5°C. Expect roughly 13.4 wet days totalling 37.6mm. A hard month to visit for comfort alone.
February in Eskilstuna averages a daily high of 1.4°C with nights around -5.1°C. Expect roughly 10.8 wet days totalling 27.9mm. A hard month to visit for comfort alone.
March in Eskilstuna averages a daily high of 5.3°C with nights around -3.2°C. Expect roughly 9.1 wet days totalling 22mm. A hard month to visit for comfort alone.
April in Eskilstuna averages a daily high of 11.4°C with nights around -0.1°C. Expect roughly 8.2 wet days totalling 26.2mm. Demanding conditions — pack for it and plan indoor options.
May in Eskilstuna averages a daily high of 17.1°C with nights around 4.6°C. Expect roughly 10.3 wet days totalling 40.9mm. Generally workable, with some weather to plan around.
June in Eskilstuna averages a daily high of 21.1°C with nights around 9.1°C. Expect roughly 10.4 wet days totalling 53.7mm. Comfortable conditions for being outdoors all day.
July in Eskilstuna averages a daily high of 23.2°C with nights around 11.6°C. Expect roughly 11.6 wet days totalling 60.8mm. Comfortable conditions for being outdoors all day.
August in Eskilstuna averages a daily high of 22°C with nights around 10.6°C. Expect roughly 12.4 wet days totalling 78.1mm. Comfortable conditions for being outdoors all day.
September in Eskilstuna averages a daily high of 17.1°C with nights around 7°C. Expect roughly 9.5 wet days totalling 41.5mm. Generally workable, with some weather to plan around.
October in Eskilstuna averages a daily high of 10.4°C with nights around 3°C. Expect roughly 12.2 wet days totalling 52.2mm. Demanding conditions — pack for it and plan indoor options.
November in Eskilstuna averages a daily high of 5.2°C with nights around 0°C. Expect roughly 14.3 wet days totalling 39.9mm. A hard month to visit for comfort alone.
December in Eskilstuna averages a daily high of 1.5°C with nights around -4.1°C. Expect roughly 16.2 wet days totalling 41.2mm. 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. Eskilstuna peaks at 79.
Based on 30 years of records, June–September scores highest for comfort in Eskilstuna, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 23.2°C.
August is the wettest, averaging 78.1mm of rain across roughly 12.4 wet days.
January is the coolest month, with average daily highs around 0.3°C.