| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -11.7° | -22.4° | 4.5mm | 3.9 | 22 |
| February | -5.9° | -17.7° | 4.1mm | 2.5 | 25 |
| March | 3.3° | -7.8° | 13.7mm | 5.1 | 22 |
| April | 14.3° | 2° | 21.4mm | 6 | 70 |
| May | 21.8° | 9.4° | 50.3mm | 9.7 | 81 |
| June | 27.1° | 16° | 99.9mm | 12.2 | 75 |
| July | 28.5° | 19.5° | 141.9mm | 13 | 68 |
| August | 27° | 17.3° | 118.8mm | 11 | 78 |
| September | 22.1° | 10.2° | 48.8mm | 7.4 | 85 |
| October | 13.1° | 1.6° | 24.3mm | 5.9 | 66 |
| November | 0.3° | -9° | 19.1mm | 5.4 | 19 |
| December | -9.6° | -19.1° | 7mm | 4.6 | 21 |
January in Harbin averages a daily high of -11.7°C with nights around -22.4°C. Expect roughly 3.9 wet days totalling 4.5mm. A hard month to visit for comfort alone.
February in Harbin averages a daily high of -5.9°C with nights around -17.7°C. Rain is rare — about 2.5 wet days and 4.1mm across the month. A hard month to visit for comfort alone.
March in Harbin averages a daily high of 3.3°C with nights around -7.8°C. Expect roughly 5.1 wet days totalling 13.7mm. A hard month to visit for comfort alone.
April in Harbin averages a daily high of 14.3°C with nights around 2°C. Expect roughly 6 wet days totalling 21.4mm. Generally workable, with some weather to plan around.
May in Harbin averages a daily high of 21.8°C with nights around 9.4°C. Expect roughly 9.7 wet days totalling 50.3mm. Comfortable conditions for being outdoors all day.
June in Harbin averages a daily high of 27.1°C with nights around 16°C. Expect roughly 12.2 wet days totalling 99.9mm. Comfortable conditions for being outdoors all day.
July in Harbin averages a daily high of 28.5°C with nights around 19.5°C. Expect roughly 13 wet days totalling 141.9mm. Generally workable, with some weather to plan around.
August in Harbin averages a daily high of 27°C with nights around 17.3°C. Expect roughly 11 wet days totalling 118.8mm. Comfortable conditions for being outdoors all day.
September in Harbin averages a daily high of 22.1°C with nights around 10.2°C. Expect roughly 7.4 wet days totalling 48.8mm. Comfortable conditions for being outdoors all day.
October in Harbin averages a daily high of 13.1°C with nights around 1.6°C. Expect roughly 5.9 wet days totalling 24.3mm. Generally workable, with some weather to plan around.
November in Harbin averages a daily high of 0.3°C with nights around -9°C. Expect roughly 5.4 wet days totalling 19.1mm. A hard month to visit for comfort alone.
December in Harbin averages a daily high of -9.6°C with nights around -19.1°C. Expect roughly 4.6 wet days totalling 7mm. 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. Harbin peaks at 85.
Based on 30 years of records, August–September scores highest for comfort in Harbin, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 28.5°C.
July is the wettest, averaging 141.9mm of rain across roughly 13 wet days.
January is the coolest month, with average daily highs around -11.7°C.