| Month | High | Low | Rain | Wet days | Score |
|---|---|---|---|---|---|
| January | -10.6° | -20.2° | 10.2mm | 3.9 | 22 |
| February | -6° | -16.6° | 8mm | 3.8 | 22 |
| March | 1.8° | -9.2° | 17.1mm | 6.5 | 17 |
| April | 11.7° | -0.6° | 32.9mm | 8.1 | 53 |
| May | 18.2° | 5.5° | 75.5mm | 12.9 | 68 |
| June | 22.3° | 11.1° | 97mm | 13.1 | 74 |
| July | 25° | 15.5° | 128.5mm | 14.3 | 71 |
| August | 24.4° | 14.9° | 152.3mm | 15 | 70 |
| September | 19.8° | 7.7° | 69.8mm | 8.4 | 83 |
| October | 11.8° | 0.1° | 36.2mm | 7.4 | 56 |
| November | 0° | -9.3° | 27.8mm | 6.4 | 17 |
| December | -8.8° | -17.9° | 9.8mm | 5.2 | 20 |
January in Suifenhe averages a daily high of -10.6°C with nights around -20.2°C. Expect roughly 3.9 wet days totalling 10.2mm. A hard month to visit for comfort alone.
February in Suifenhe averages a daily high of -6°C with nights around -16.6°C. Expect roughly 3.8 wet days totalling 8mm. A hard month to visit for comfort alone.
March in Suifenhe averages a daily high of 1.8°C with nights around -9.2°C. Expect roughly 6.5 wet days totalling 17.1mm. A hard month to visit for comfort alone.
April in Suifenhe averages a daily high of 11.7°C with nights around -0.6°C. Expect roughly 8.1 wet days totalling 32.9mm. Demanding conditions — pack for it and plan indoor options.
May in Suifenhe averages a daily high of 18.2°C with nights around 5.5°C. Expect roughly 12.9 wet days totalling 75.5mm. Generally workable, with some weather to plan around.
June in Suifenhe averages a daily high of 22.3°C with nights around 11.1°C. Expect roughly 13.1 wet days totalling 97mm. Generally workable, with some weather to plan around.
July in Suifenhe averages a daily high of 25°C with nights around 15.5°C. Expect roughly 14.3 wet days totalling 128.5mm. Generally workable, with some weather to plan around.
August in Suifenhe averages a daily high of 24.4°C with nights around 14.9°C. Expect roughly 15 wet days totalling 152.3mm. Generally workable, with some weather to plan around.
September in Suifenhe averages a daily high of 19.8°C with nights around 7.7°C. Expect roughly 8.4 wet days totalling 69.8mm. Comfortable conditions for being outdoors all day.
October in Suifenhe averages a daily high of 11.8°C with nights around 0.1°C. Expect roughly 7.4 wet days totalling 36.2mm. Generally workable, with some weather to plan around.
November in Suifenhe averages a daily high of 0°C with nights around -9.3°C. Expect roughly 6.4 wet days totalling 27.8mm. A hard month to visit for comfort alone.
December in Suifenhe averages a daily high of -8.8°C with nights around -17.9°C. Expect roughly 5.2 wet days totalling 9.8mm. 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. Suifenhe peaks at 83.
Based on 30 years of records, September scores highest for comfort in Suifenhe, balancing daytime temperature against rainfall.
July is the warmest, averaging a daily high of 25°C.
August is the wettest, averaging 152.3mm of rain across roughly 15 wet days.
January is the coolest month, with average daily highs around -10.6°C.