| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -5.2° | -12.2° | 56.2mm | 15 | 0 |
| February | -4.8° | -12.1° | 36.9mm | 11.2 | 8 |
| March | 0.2° | -7.9° | 29mm | 9.1 | 12 |
| April | 5.8° | -2.3° | 32.5mm | 8.3 | 32 |
| May | 12.5° | 3.3° | 38.1mm | 9 | 58 |
| June | 17.7° | 9.6° | 53.4mm | 9.6 | 73 |
| July | 20.7° | 12.5° | 57.6mm | 10.5 | 79 |
| August | 18.4° | 11.5° | 72.1mm | 10.9 | 73 |
| September | 13.1° | 6.5° | 62.1mm | 11.7 | 55 |
| October | 5.7° | 0.2° | 60.1mm | 12.1 | 27 |
| November | 0° | -5.1° | 55.8mm | 14 | 6 |
| December | -2.9° | -9.5° | 60.4mm | 15.8 | 0 |
January in Luleå averages a daily high of -5.2°C with nights around -12.2°C. Expect roughly 15 wet days totalling 56.2mm. A hard month to visit for comfort alone.
February in Luleå averages a daily high of -4.8°C with nights around -12.1°C. Expect roughly 11.2 wet days totalling 36.9mm. A hard month to visit for comfort alone.
March in Luleå averages a daily high of 0.2°C with nights around -7.9°C. Expect roughly 9.1 wet days totalling 29mm. A hard month to visit for comfort alone.
April in Luleå averages a daily high of 5.8°C with nights around -2.3°C. Expect roughly 8.3 wet days totalling 32.5mm. A hard month to visit for comfort alone.
May in Luleå averages a daily high of 12.5°C with nights around 3.3°C. Expect roughly 9 wet days totalling 38.1mm. Generally workable, with some weather to plan around.
June in Luleå averages a daily high of 17.7°C with nights around 9.6°C. Expect roughly 9.6 wet days totalling 53.4mm. Generally workable, with some weather to plan around.
July in Luleå averages a daily high of 20.7°C with nights around 12.5°C. Expect roughly 10.5 wet days totalling 57.6mm. Comfortable conditions for being outdoors all day.
August in Luleå averages a daily high of 18.4°C with nights around 11.5°C. Expect roughly 10.9 wet days totalling 72.1mm. Generally workable, with some weather to plan around.
September in Luleå averages a daily high of 13.1°C with nights around 6.5°C. Expect roughly 11.7 wet days totalling 62.1mm. Generally workable, with some weather to plan around.
October in Luleå averages a daily high of 5.7°C with nights around 0.2°C. Expect roughly 12.1 wet days totalling 60.1mm. A hard month to visit for comfort alone.
November in Luleå averages a daily high of 0°C with nights around -5.1°C. Expect roughly 14 wet days totalling 55.8mm. A hard month to visit for comfort alone.
December in Luleå averages a daily high of -2.9°C with nights around -9.5°C. Expect roughly 15.8 wet days totalling 60.4mm. 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. Luleå peaks at 79.
Based on 30 years of records, June–August scores highest for comfort in Luleå, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 20.7°C.
August is the wettest, averaging 72.1mm of rain across roughly 10.9 wet days.
January is the coolest month, with average daily highs around -5.2°C.