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Guiyang, the capital of Guizhou province, sits on a plateau in southwestern China at around 1,100 metres above sea level, in a hilly, karst landscape at approximately 26.65°N, 106.63°E. Its altitude moderates its subtropical latitude to give a mild highland climate (Köppen Cwa/Cfa) — with warm, wet summers and cool, damp, cloudy winters — and it is known for mild temperatures and notably cloudy, humid weather.
Summer, from June to August, is warm and humid rather than hot, with July the warmest month — average highs around 28–29°C — kept comfortable by the plateau altitude, which has made Guiyang a popular summer refuge from China's lowland heat. It is the wet season, when the monsoon brings frequent, sometimes heavy rain and thunderstorms, with abundant cloud and high humidity.
Winter, from December to February, is cool, damp and grey, with January the coolest month — average highs around 9–10°C and lows near 2–4°C, occasionally with frost or a rare dusting of snow or freezing drizzle. The season is dominated by persistent cloud, mist and drizzle, so it feels raw and penetrating despite the mild temperatures, with very little sunshine.
Guiyang is wet, receiving around 1,100–1,200 mm of rain a year, concentrated in the summer months, while winter is drier but persistently damp and overcast; the city is one of the cloudiest and least sunny in China. Live rainfall, humidity, and pressure readings for the city are shown in the panels above.
Guiyang is known for its mild, humid, notably cloudy weather — its plateau altitude keeps summers cool enough to make it a popular escape from the lowland heat, earning it a reputation as a 'summer capital', while its winters are grey, damp and among the least sunny in China. Occasional winter freezing drizzle, which can glaze roads and power lines, is a recurring cold-season hazard on the plateau.
To follow any single measurement in Guiyang 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.