According to the latest weather forecast from the National Center for Hydro-Meteorological Forecasting, from October 20-22, the cold air will strengthen, affecting other places in the Northeast and North Central regions.
After that, cold air continues to flow to some places in the Northwest and Central Central regions. On land, the wind will shift to the Northeast level 2-3, coastal areas level 3-4.
Hanoi weather is sunny during the day, no rain at night. Cold in the morning and at night. The lowest temperature in this cold air mass is generally 19-21 degrees Celsius.
Forecast from October 22-29, Hanoi weather is cloudy, no rain. The lowest temperature is from 20-21 degrees Celsius, the highest is from 28-29 degrees Celsius.

According to Accuweather's weather forecast, from October 20, Hanoi will be affected by a cold air mass combined with the far edge of storm No. 12, so the sky will be cloudy with scattered rain, especially in the early morning and at night. Temperature ranges from 22 to 29 degrees Celsius, feeling slightly cold in the morning.
On October 21, the rain will decrease, the weather will become more pleasant. During the day, there will be light sunshine, no rain at night, the temperature ranges from 20 - 27 degrees Celsius.
On October 22, there is a possibility of light rain in the morning, then the weather will be sunny. The highest temperature is about 26 degrees Celsius, the lowest is 20 degrees Celsius, the air is still cool.
From October 23 to 24, the cold air mass will strengthen, causing the weather to turn cool. Cloudy weather, sometimes light rain, cold at night. The common temperature is 19 - 24 degrees Celsius, feeling cold in the early morning.
By October 25, the weather will be more stable, with less rain, and light sunshine during the day. Temperature increased slightly, ranging from 20 - 25 degrees Celsius.
From October 26 to 27, Hanoi will maintain a dry state, warm during the day, and cool at night. Intermittent sunshine, sometimes cloudy. The common temperature is 20 - 27 degrees Celsius.
On October 28 and 29, the weather was quite stable, clear sky, light sunshine. During the day, it will be warm at about 27 - 28 degrees Celsius, at night it will be cool and pleasant at 21 degrees Celsius.
Hanoi weather forecast for the next 10 days will enter a period of clear weather. At the beginning of the period, there will be rain due to the influence of cold air, the middle and end of the period will be dry, with temperatures ranging from 19 - 29 degrees Celsius.
Cold at night and early morning, sunny during the day, favorable for outdoor activities.
People and tourists can take advantage of the beautiful weather to travel, picnick, and participate in outdoor activities with family and friends. Be sure to bring warm clothes and thermal clothing to ensure your health, especially at night and early morning when the temperature drops sharply.