The National Center for Hydro-Meteorological Forecasting has updated the weather forecast for tomorrow, September 13, across various regions in Vietnam. In Hanoi, the day will start sunny, but there will be occasional rain showers and thunderstorms in the evening. The temperature is expected to range from 25 to 27 degrees Celsius at night, rising to 31 to 33 degrees Celsius during the day.

In Ho Chi Minh City, the forecast predicts scattered rain and thunderstorms, with some areas facing heavy downpours. The temperature will vary from 24 to 26 degrees Celsius at night and reach 31 to 33 degrees Celsius during the day.

Rainfall will be concentrated from Quang Tri to Da Nang, with moderate to heavy rain expected in Ha Tinh, northern Quang Tri, and eastern Quang Ngai. The eastern provinces from Gia Lai to Lam Dong, as well as the Central Highlands and southern regions, will also experience scattered rain and thunderstorms.

From the evening of September 13, heavy rain is expected to shift northward, affecting areas from Thanh Hoa to Quang Tri. The northern midlands and lowlands, including southern Son La and Phu Tho, will also see moderate to heavy rain and thunderstorms.

The detailed forecast for various regions is as follows:

• Northwest Region: Night temperatures of 20-23 degrees Celsius, daytime highs of 29-32 degrees Celsius with scattered rain and thunderstorms.
• Northeast Region: Night temperatures of 23-26 degrees Celsius, daytime highs of 30-33 degrees Celsius with occasional rain.
• Thanh Hoa to Hue: Night temperatures of 23-26 degrees Celsius, daytime highs of 26-29 degrees Celsius with heavy rain in the north.
• South Central Coast: Night temperatures of 23-26 degrees Celsius, daytime highs of 29-32 degrees Celsius with scattered rain.
• Central Highlands: Night temperatures of 20-23 degrees Celsius, daytime highs of 26-29 degrees Celsius with scattered rain.
• South Region: Night temperatures of 23-26 degrees Celsius, daytime highs of 29-32 degrees Celsius with scattered thunderstorms.

Residents are advised to stay alert for possible thunderstorms and heavy rain, which may lead to flash floods and landslides in vulnerable areas.