According to the National Center for Hydro-Meteorological Forecasting, from January 18-20, 2026, the continental high pressure will weaken. Around the late afternoon and night of January 20-21, 2026, the Northern region will be affected by a strong cold air wave (Northeast monsoon).
Due to the influence of cold air, in these 2 days, there will be rain in the Northern region. From around January 21, the weather in the Northern region will be cold, with severe cold in some places.
From January 22nd, the mountainous and midland areas of the North will be very cold, with severe cold in some places with the lowest temperature in the mountainous and midland areas in the range of 8-11 degrees Celsius, and in the Northern Delta region the temperature will be in the range of 11-13 degrees Celsius.
From January 22nd to 23rd, in the Central Central region, there will be rain, showers, locally moderate rain and thunderstorms.
In Hanoi area, on January 18-19, it will be cloudy, no rain. The highest temperature is commonly 24-25 degrees C, the lowest is 19 degrees C. The feeling is cool, favorable for outdoor activities.
In the period from January 20-21, cold air will flood in, causing Hanoi weather to turn bad, cloudy, with rain and showers appearing in many places. Temperatures will gradually decrease, highest from 20-23 degrees C, lowest commonly 14-16 degrees C. The weather will be cool and humid.
On January 23, it will be cloudy, with reduced rain. Temperatures will fluctuate from 13-18 degrees Celsius, cold in the early morning and at night.
From January 24-27, Hanoi weather improves significantly, cloudy, no rain, temperature gradually increases. The highest temperature is commonly 22-26 degrees C, the lowest is 13-17 degrees C. Warm during the day, cold in some places at night and early morning.
People and tourists who plan to come to Hanoi and the North during this time should pay attention to weather forecasts. Bring umbrellas, raincoats and warm clothes to cope with bad weather during cold air days.
