In the next month, a tropical storm could form over the East Sea and potentially affect Vietnam’s mainland. Meanwhile, heat in northern Vietnam is forecast to ease, with rainfall and dangerous weather events expected to increase.

The National Center for Hydro-Meteorological Forecasting has issued its climate outlook for the period from June 21 to July 20, 2025.

According to the report, average temperatures in the northern and north-central regions will generally align with long-term norms, while other regions may see temperatures 0.5–1°C above the same period averages.

This period marks the start of a rainy phase in the north and north-central regions, with total rainfall expected to be 15–30% higher than the long-term average. Conversely, other regions are likely to experience rainfall levels 10–20% below normal.

“The north and north-central areas may experience several episodes of widespread heavy rain. In the Central Highlands and southern regions, frequent thunderstorms are expected, particularly in the late afternoon and evening,” the meteorological agency noted.

The agency also forecasts that the number of storms or tropical depressions forming over the East Sea during this period will be roughly equal to long-term averages. Some could reach land, with historical data showing an average of 1.4 storms forming and 0.7 making landfall during this timeframe.

While heatwaves are expected to persist in the north and central regions, experts predict they will not be as intense as those experienced during the same period in 2024.

Extreme weather risks in late 2025

Looking further ahead, from July to December 2025, the meteorological center warns of increasing extreme weather events, especially in the central region, Central Highlands, and Mekong Delta.

Deputy Director Hoang Phuc Lam stated that between July and September, Vietnam will still be affected by dangerous weather conditions, including thunderstorms, lightning, hail, and especially typhoons.

The forecast estimates 6–7 storms could form over the East Sea, with 2–3 likely to make landfall in Vietnam.

Frequent heavy rainfall is expected across the northern, north-central, Central Highlands, and southern regions.

From October to December, Lam noted that cold air systems will begin to intensify, particularly from November onward. Typhoons and tropical depressions may still form over the East Sea during this period, with 4–5 potential systems, some affecting the central and southern coasts.

This timeframe also coincides with the peak flood season in central Vietnam, with 2–4 major flood events expected, especially from Quang Binh to Quang Ngai and Binh Dinh to Binh Thuan.

Rainfall totals in the central and south-central regions and Central Highlands are forecast to exceed the long-term average by 10–25% during October and November.

Authorities warn of ongoing risks from extreme weather nationwide. Government agencies and residents are urged to monitor official forecasts closely and prepare proactive response plans to minimize potential losses during the upcoming storm season.

Bao Anh