Historical weather data, all-time temperature records, and monthly climate averages for Jiangmen, Guangdong, China. Explore typical weather conditions by week for trip planning, and see how today compares to the historical record.
April 5 in Jiangmen sits squarely in the wet season's opening act — there's a 67% chance of rain today, and the city has seen everything from a balmy 88° (2006) to a raw 45° (1969) on this exact date. Expect the typical mix of warmth and humidity, with an average high of 77° and low of 65°.
Jiangmen runs hot and wet at its extremes — the mercury has topped out at a scorching 101° in July 2020 and plunged to 34° in February 1969, a 67-degree swing that reflects the region's dramatic seasonal range. A single day in September 1983 dropped 9.54 inches of rain, and in a remarkable quirk for subtropical South China, the city even recorded 0.1 inches of snow on January 24, 2016.
Jiangmen is warmest from early July through August, when average highs hover around 88–89°, and coolest in January, when highs settle near 66°. The wettest stretch falls in early June, averaging 3.45 inches per week — plan accordingly if you're visiting in late spring or summer. For the driest, most comfortable conditions, October through December offers mild highs in the mid-to-upper 70s with far less rainfall.