As the cold front is relatively mild, it is expected to lower temperatures by only 2–3°C, making the weather cooler and more comfortable, said meteorologists.  

However, due to the combination of the weak cold air and easterly winds from the subtropical high-pressure system moving westward, rain is likely across the Northern region, especially in the Northeast, from October 13–15.

Experts noted that accumulated rainfall over 24 hours would generally remain below 50mm, so the risk of flooding along rivers is low.

Nevertheless, localized heavy showers and thunderstorms may occur, with rainfall reaching 30–50mm per hour, potentially causing flashfloods, localised inundation, and landslides in some mountainous areas.

The National Centre for Hydro-Meteorological Forecasting also reported that starting from October, cold fronts are forecast to increase in intensity and frequency, with stronger activity likely in November and December.

Heavy cold spells could hit Northern Vietnam in late December, with the possibility of extending into February 2026.

Heavy rains ease in northern Vietnam, may return early Oct. 8

VOV.VN - Heavy rains that hit northern Vietnam, including Hanoi, began to ease gradually from the afternoon of October 7, though moderate showers may return to the northeast early October 8, according to Nguyen Van Huong, Head of the Weather Forecasting Department at the National Center for Hydro-Meteorological Forecasting (NCHMF).