The weather forecast for Vietnam from September 26 to 28 shows significant variations across the three regions of the country. In the Northern region, light rain and thunderstorms are expected to occur intermittently, particularly in the morning hours. The weather will clear up during the day, leading to sunny conditions.

In the Central region, the forecast indicates a mix of sun and clouds, with occasional rain showers. The temperatures are expected to remain moderate, providing a comfortable climate for outdoor activities.

Conversely, the Southern region is predicted to face heavy rainfall, particularly from September 24 to 25, with some areas experiencing very heavy downpours. Residents are advised to remain cautious during this period as localized flooding may occur in low-lying areas.

Overall, the weather patterns reflect the transitional phase of the seasons in Vietnam, with the North moving towards cooler temperatures while the South continues to experience the effects of the rainy season.