Weather in Harbin

On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are June, July, and August. Harbin is in China at 45.8°N. The 2001–2020 NASA POWER daily record describes a continental climate with a wide temperature swing.

July is the warmest month (average 23.3°C, high 28.6°C) and January is the coolest (average -18.6°C, low -23.7°C). Rain is wet season runs from June to August, inside an annual total of 577 mm. The wettest month is July at 139 mm; the driest is January at 6 mm.

When the score favours a visit

The three months with the highest comfort score are June, July, and August: June (20.6°C average, 106 mm, 65% humidity); July (23.3°C average, 139 mm, 72% humidity); August (21.6°C average, 116 mm, 74% humidity). They fall in calendar order. The score rewards averages near 22°C, lower rainfall, and humidity near 60%. It is a climate score, not a festival or price calendar.

If you want the wet season itself — fewer crowds, greener landscape, heavier rain — aim at June–August instead of the score.

Temperature through the year

Monthly average highs run from -13.4°C in January to 28.6°C in July. Nights follow the same curve: -23.7°C in January and 18.1°C in July.

Across the year the mean afternoon high is 9.8°C. If you want the smallest day–night shock, look at months where the high and low sit close together; July nights still hold 18.1°C.

Rainfall pattern

The wet season in Harbin starts in June and ends in August (June, July, and August). July is the core of it at 139 mm. January is the other extreme, with 6 mm.

Humidity peaks near 88%. That usually lines up with the wetter months rather than the hottest ones.

The calendar in Harbin

The year bottoms out in January. Plan for -23.7°C at night and -13.4°C in the afternoon. In February, Harbin averages -8.0°C by day and -20.4°C at night, with 6 mm of rain. March: 2.0°C high, -9.9°C low, 13 mm rain, 69% humidity. April stands apart from the months beside it: 13.1°C / -0.2°C and 24 mm. May brings 60 mm and 10 rainy days; temperatures run from 7.7°C to 21.3°C. June is when the wet season typically starts in Harbin: highs near 26.8°C, and rainfall jumps to 106 mm (15 rainy days).

July is both the hottest and wettest month: highs around 28.6°C, 139 mm of rain, and 72% humidity. August closes the wet season: 116 mm over 14 rainy days, then the calendar dries. September brings 58 mm and 8 rainy days; temperatures run from 9.1°C to 21.7°C. October: 11.8°C high, -0.1°C low, 24 mm rain, 68% humidity. In November, Harbin averages -1.1°C by day and -10.3°C at night, with 16 mm of rain. December brings 9 mm and 3 rainy days; temperatures run from -21.0°C to -11.8°C.

Harbin and other cities in China

Shenyang is about 510 km away: Harbin is 2.1°C cooler than Shenyang in its hottest month and 43 mm drier over the year than Shenyang. Shenyang’s wettest month is August (153 mm) versus July here.

Dalian is about 866 km away: Harbin is 1.6°C cooler than Dalian in its hottest month and 91 mm drier over the year than Dalian. Dalian’s wettest month is August (170 mm) versus July here.

Beijing is about 1057 km away: Harbin is 3.4°C cooler than Beijing in its hottest month and 44 mm wetter over the year than Beijing. Beijing’s wettest month is July (151 mm) versus July here.