According to meteorological authorities, the current cold air mass is relatively weak and shifting eastward, mainly causing light rain, drizzle and cloudy conditions in northern areas. As a result, temperatures in the north dropped slightly, bringing a cooler and more humid feel typical of the seasonal transition.

However, such cold spells in April are expected to remain mild and short-lived. Experts said a few additional cold air waves may occur later this month, but they are unlikely to trigger severe cold conditions as seen during winter.

In contrast, central and southern regions are experiencing intensifying heat. Temperatures in many areas, particularly in the south, are forecast to exceed 35°C, with the heat expected to expand further in the coming days.

Meteorologists noted that the 2026 climate pattern points to a gradual increase in heat from April onwards, which will likely spread to northern and central regions in the following months. This suggests that the current cooler conditions in the north are temporary before temperatures rise again.

April 4 marks a typical transitional period in Vietnam’s weather, with short-term cooling in the north but a broader shift toward widespread heat. Residents are advised to stay alert to rapid weather changes, especially during the seasonal transition, which may bring extreme events such as thunderstorms, strong winds and localised heavy rain.

Heatwaves to soon bake northern Vietnam, temperatures to exceed 37°C

VOV.VN - Northern Vietnam is expected to experience only a brief period of mild weather before two widespread heatwaves return and dominate in early April.