As of August 20, 2026, the weather forecast for Hanoi predicts that the northeastern region will encounter moderate to heavy rainfall, along with thunderstorms. Some areas may experience particularly intense downpours, leading to potential flooding and disruptions.

According to meteorological reports, residents should prepare for wet conditions as rainfall is expected to be widespread across the area. The forecast highlights the possibility of localized flooding in low-lying regions, especially during periods of heavy rain.

Authorities advise the public to stay updated on weather warnings and to take necessary precautions, particularly if traveling or engaging in outdoor activities. The rainfall is expected to continue into the following day, making it essential for residents to remain vigilant.

In summary, the weather in Hanoi tonight and tomorrow will be marked by significant rainfall and thunderstorms, urging residents to stay informed and prepared for changing conditions.