At around 6 a.m. Monday, a thin layer of frost covered the wooden floor where the Fansipan symbol of the 3,147-meter-high mountain was located. The frost remained for around 30 minutes, before melting away under the sun.
Northern Vietnam regions are feeling the brunt of a mass of cold air, in combination with dry winds, causing temperatures to plunge to 10-12 degrees in mountainous areas, 13-15 degrees at the plains, and daytime temperatures at around 25-27 degrees, according to the National Center for Hydro-Meteorological Forecasting.
A high disparity between daytime and nighttime temperatures, and the fact that moisture level is below 50%, means the weather is dry.
This week, northern Vietnam is expected to be impacted by more cold waves while moisture levels remain low. Daytime temperatures are expected to rise by 2-3 degrees compared to last week, to 27-29 degrees. In some mountainous areas, frost can harm crops.
Ice and frost typically form when air temperatures drop below 4 degrees, and temperatures of the surfaces of objects, like plants and the ground, are at around zero degrees.
Ice and frost appear on the Fansipan on Nov. 20, 2023. Video by VnExpress/Anh Tuc