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Jiangmen, a city in the southwestern Pearl River Delta of Guangdong province, sits on the West River in southern China, near the coast of the South China Sea at approximately 22.58°N, 113.08°E. Just south of the Tropic of Cancer, it has a humid subtropical climate (Köppen Cfa) verging on tropical — with long, hot, wet summers and short, mild, drier winters — and its coastal position leaves it exposed to typhoons.
Summer is long, hot and humid, running from around April to October, with July the warmest month — average highs around 32–33°C — and oppressive humidity. This is the wet season, when the monsoon brings frequent heavy showers and thunderstorms; its coastal, delta position leaves it directly exposed to the typhoons that strike Guangdong from June to October with torrential rain and strong winds.
Winter, from December to February, is short, mild and drier, with January the coolest month — average highs around 18–19°C and lows near 10–11°C, well above frost. Occasional cold snaps from the north bring brief chilly, damp weather, but genuine cold never arrives, and this mild, comparatively dry stretch is the most comfortable time of year.
Jiangmen is wet, receiving around 1,800–2,000 mm of rain a year — among the higher totals in the delta — overwhelmingly concentrated in the wet season from April to September, with monsoon and typhoon rains delivering the heaviest falls, while winter is relatively dry. Live rainfall, humidity, and pressure readings for the city are shown in the panels above.
Jiangmen sits at the coastal, southwestern edge of the Pearl River Delta, sharing the region's hot, humid, subtropical climate while lying directly in the path of the typhoons that strike Guangdong from June to October, which bring torrential rain, flooding and storm surge to the low-lying delta. Its heavy annual rainfall reflects both the summer monsoon and its exposure to these tropical storms.
To follow any single measurement in Jiangmen more closely, use our live instruments: the online barometer for atmospheric pressure, the thermometer for temperature, the hygrometer for humidity, the anemometer for wind speed, the wind vane for wind direction, and the rain gauge for rainfall.