Changchun is warmest in July, averaging 29° by day and 19° at night. The wettest month is July with 195 mm, and the year brings about 814 mm in total.
Month by month
| Month | High | Low | Rain | Daylight | Good for |
|---|---|---|---|---|---|
| January | -10° | -22° | 6 mm | 9.1 h | Cool |
| February | -5° | -18° | 6 mm | 10.2 h | Cool |
| March | 6° | -8° | 16 mm | 11.6 h | Cool |
| April | 15° | 0° | 24 mm | 13.2 h | Mild |
| May | 21° | 8° | 65 mm | 14.5 h | Sightseeing |
| June | 26° | 14° | 132 mm | 15.3 h | Mild |
| July | 29° | 19° | 195 mm | 15.0 h | Rainy season |
| August | 27° | 17° | 177 mm | 13.8 h | Mild |
| September | 22° | 10° | 111 mm | 12.3 h | Mild |
| October | 14° | 1° | 34 mm | 10.8 h | Mild |
| November | 1° | -9° | 45 mm | 9.4 h | Cool |
| December | -9° | -19° | 3 mm | 8.7 h | Cool |
High and low are average daily maximum and minimum, rain is typical monthly total, daylight is the hours between sunrise and sunset mid-month. Climate normals from NASA POWER — averages, not promises.
When to go
Beach weather: No month in Changchun combines swimming warmth with dry skies.
Walking the city: May — highs of 21–21° and no more than 65 mm of rain a month.
Wet season: July — up to 195 mm in a single month.