Yen Bai's Climate
Yen Bai stretches from low midland hills to high western districts like Mu Cang Chai, so its mountain tropical-monsoon climate varies strongly with terrain. The rainy season (May–September) is hot and humid with heavy rain that often triggers flash floods and landslides in the uplands, while winter (December–February) is dry and cold, with the highland communes seeing fog, sharp cold and occasional frost. The lowlands around Yen Bai city stay noticeably warmer than mountainous Mu Cang Chai. This page offers an hourly and 14-day forecast plus detailed metrics like humidity, wind, UV and AQI.