Weather in Chongqing

Chongqing is in China at 29.6°N. The 2001–2020 NASA POWER daily record describes a humid subtropical climate. July is the warmest month (average 28.4°C, high 33.0°C) and January is the coolest (average 7.0°C, low 2.5°C).

Rain is wet season runs from April to October, inside an annual total of 1143 mm. The wettest month is June at 205 mm; the driest is February at 21 mm. On this site the months that score closest to a 22°C day, lighter rain, and moderate humidity are April, May, and September.

Rain through the year

The wet season in Chongqing starts in April and ends in October (April, May, June, July, August, September, and October). June is the core of it at 205 mm. February is the other extreme, with 21 mm.

A rainy day here is a day with at least 1 mm in the NASA POWER series. June averages 19 such days; February averages 6.

Temperature through the year

Monthly average highs run from 11.5°C in January to 33.0°C in July. Nights follow the same curve: 2.5°C in January and 23.9°C in July.

Mean high across all twelve months is 23.2°C and mean low is 13.8°C. These are 20-year grid averages, so a city station can read a few degrees warmer or cooler.

What stands out month by month

The year bottoms out in January. Plan for 2.5°C at night and 11.5°C in the afternoon. February is the driest month, averaging only 21 mm across 6 rainy days. Highs sit near 14.7°C. In March, Chongqing averages 20.0°C by day and 9.3°C at night, with 54 mm of rain. The wet season opens in April. Expect 97 mm and 13 rainy days, with nights around 14.1°C. May stands apart from the months beside it: 28.2°C / 17.9°C and 133 mm. June is the wettest month — 205 mm and 19 rainy days, with 77% humidity.

July is the warmest month. Afternoon highs average 33.0°C and nights settle near 23.9°C, with 164 mm of rain. August brings 143 mm and 15 rainy days; temperatures run from 23.6°C to 33.0°C. September stands apart from the months beside it: 29.0°C / 19.8°C and 140 mm. October closes the wet season: 98 mm over 17 rainy days, then the calendar dries. November brings 45 mm and 9 rainy days; temperatures run from 9.5°C to 18.2°C. In December, Chongqing averages 12.5°C by day and 4.0°C at night, with 21 mm of rain.

Best months to visit Chongqing

The three months with the highest comfort score are April, May, and September: April (19.5°C average, 97 mm, 71% humidity); May (23.0°C average, 133 mm, 72% humidity); September (24.4°C average, 140 mm, 76% 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 April–October instead of the score.

How Chongqing compares inside China

Chengdu is about 269 km away: Chongqing is 0.5°C warmer than Chengdu in its hottest month and 152 mm wetter over the year than Chengdu. Chengdu’s wettest month is July (224 mm) versus June here.

Xi’an is about 568 km away: Chongqing is 0.8°C warmer than Xi’an in its hottest month and 450 mm wetter over the year than Xi’an. Xi’an’s wettest month is September (125 mm) versus June here.

Wuhan is about 750 km away: Chongqing is 0.7°C cooler than Wuhan in its hottest month and 190 mm drier over the year than Wuhan. Wuhan’s wettest month is July (222 mm) versus June here.