Lao Cai's Climate
Lao Cai's weather varies dramatically with elevation: the riverside city along the Red River is hot and humid like the lowlands, while Sa Pa high in the Hoang Lien Son range stays cool and temperate all year. Summers (May–August) bring heavy rain, high humidity and thick mountain fog, while winters (December–February) turn bitterly cold in the highlands, where Sa Pa and Mount Fansipan can fall below 0°C with occasional frost and rare snowfall. This page offers an hourly and 14-day forecast plus detailed metrics like humidity, wind, UV and AQI.