On the evening of September 25, Northern Vietnam saw light rain in several areas, while Central Vietnam, particularly from Nghe An to northern Quang Tri, experienced significant rainfall. The Southern region also faced thunderstorms, which could impact outdoor activities during the Mid-Autumn Festival.

On this day, which marks the 15th day of the eighth lunar month, Hanoi and most of Northern Vietnam enjoyed sunny weather with temperatures ranging from 31 to 34 degrees Celsius. However, forecasts indicate that from the night of September 25 to September 26, light rain and thunderstorms are expected in the region. This weather is generally favorable for outdoor Mid-Autumn activities, but residents are advised to monitor local weather conditions closely.

In contrast to Northern Vietnam, the area stretching from Nghe An to northern Quang Tri is experiencing heavy rain due to the influence of a tropical convergence zone. On September 25, rainfall amounts ranged from 20 to 50 mm, with some locations exceeding 120 mm. Certain areas could receive over 80 mm of rain within just three hours. From the night of September 25 to September 26, further rainfall of 20 to 40 mm is anticipated, with localized areas potentially exceeding 80 mm.

Heavy rainfall poses risks such as flooding in low-lying areas and urban regions, flash floods in small streams, and landslides on slopes. Organizers of outdoor lantern parades and festivities in affected areas should remain vigilant regarding weather developments, especially concerning thunderstorms and lightning.

On the day and night of September 25, southern Thanh Hoa, Quang Tri, Khanh Hoa, eastern Lam Dong, the Central Highlands, and Southern Vietnam are also expected to experience rain, moderate rainfall, and thunderstorms, with total rainfall ranging from 20 to 40 mm, and localized areas potentially exceeding 80 mm. Thunderstorms may bring strong winds, hail, and lightning.