According to the National Center for Hydro-Meteorological Forecasting, today, October 27, cold air will affect the Northeast and North Central regions, then affect some places in the Northwest and Central Central regions. The northeast wind inland is strong at level 2-3, coastal areas at level 3-4.
In the North and North Central regions, the night and morning are cold, the mountainous areas are cold. The lowest temperature is generally 19-22 degrees Celsius, in mountainous areas it is below 16 degrees Celsius.
Hanoi area is cold at night and morning, lowest temperature 19-22 degrees Celsius.
At sea, the Gulf of Tonkin will have strong northeast winds of level 6, gusting to level 7-8, rough seas, waves 1.5-3.0m high. The sea area north of the North East Sea (including the sea area north of Hoang Sa special zone) has strong northeast winds of level 6, sometimes level 7, gusting to level 8-9, rough seas, waves 3.0-5.0m high.
The sea area from South Quang Tri to Quang Ngai: strong northeast wind level 5, sometimes level 6, gust level 7-8, waves 2.0-4.0m high; combined with high tides, rough seas.
On October 27, the North and North Central regions will have the lowest temperature of 19-22 degrees Celsius, mountainous areas below 16°C; average temperature 23-25°C, mountainous areas below 22°C.
On the night of October 27 and October 28, the lowest temperature in the North and North Central regions will be 19-22 degrees Celsius, in mountainous areas below 17 degrees Celsius; the average temperature will be 23-25 degrees Celsius, in mountainous areas below 22 degrees Celsius.
Due to the influence of the strengthening cold air combined with disturbances in the high-altitude East wind zone, the area from Ha Tinh to Da Nang city and the East of the provinces from Quang Ngai to Dak Lak will have moderate rain, heavy rain and thunderstorms, locally very heavy rain.
Heavy rain is likely to cause flooding in low-lying areas; flash floods on small rivers and streams; landslides on steep slopes.
People and tourists are advised to prepare warm clothes and thermal clothing to protect their health, especially at night and early morning. At the same time, you should bring an umbrella or raincoat when the weather changes suddenly.

Weather forecast for today, October 27, nationwide:
City. Hanoi
Lowest temperature: 19-21 degrees Celsius.
Highest temperature: 27-29 degrees Celsius.
Cloudy, no rain at night; sunny during the day.Northeast wind level 2-3.Cold at night and morning.
Northwest
Lowest temperature: 18-21 degrees Celsius, some places below 17 degrees Celsius.
Highest temperature: 26-29 degrees Celsius.
Cloudy, some rain; sunny in the afternoon.Light wind.Cold at night and morning.
Northeast
Lowest temperature: 18-21 degrees Celsius, mountainous areas below 18 degrees Celsius.
Highest temperature: 26-29 degrees Celsius.
Cloudy, some rain; sunny in the afternoon.Northeast wind level 2-3.Cold at night and morning, mountainous areas are cold.
Thanh Hoa to Hue
Lowest temperature: 19-22 degrees Celsius.
Highest temperature: North 26-28 degrees Celsius; South 24-26 degrees Celsius.
Cloudy, some rain in the North; South has moderate rain, heavy rain and thunderstorms, some places have very heavy rain, especially Hue City.North to northwest wind level 2-3.Cold at night and morning.During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
South Central Coast
Lowest temperature: 22-25 degrees Celsius.
Highest temperature: North 25-28 degrees Celsius; South 29-31 degrees Celsius.
Cloudy, heavy to very heavy rain; South has rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.North to northeast wind level 2-3.During thunderstorms, there is a possibility of tornadoes, lightning and strong gusts of wind.
Central Highlands
Lowest temperature: 19-22 degrees Celsius, some places below 19 degrees Celsius.
Highest temperature: 25-28 degrees Celsius.
Cloudy, rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.Northeast to east wind level 2-3.During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Southern region
Lowest temperature: 23-26 degrees Celsius.
Highest temperature: 29-32 degrees Celsius.
Cloudy, scattered showers and thunderstorms; In the late afternoon and evening, there will be rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.Light wind.During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.
Ho Chi Minh City
Lowest temperature: 23-25 degrees Celsius.
Highest temperature: 28-30 degrees Celsius.
Cloudy, scattered showers and thunderstorms; In the late afternoon and evening, there will be rain, moderate rain and scattered thunderstorms, locally heavy to very heavy rain.Light wind.During thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.