From June 20 to 29, Northern Vietnam is expected to experience a significant rain event lasting about three days, followed by continued scattered showers. In contrast, the Central region will endure prolonged heatwaves, while the Central Highlands and Southern regions will see frequent afternoon and evening thunderstorms.

Experts from the National Center for Hydro-Meteorological Forecasting have provided updated weather patterns for the coming 10-day period (June 20–29, 2025).

The main weather patterns during this period include a low-pressure trough positioned at approximately 23–26 degrees north latitude, gradually compressed and shifting southward. Moderate to strong southwestern winds are expected. At higher altitudes (3,000–5,000 meters), a wind convergence zone over Northern Vietnam will likely strengthen in the next 48–72 hours.

No tropical depressions or storms are currently forecasted to form over the East Sea.

Due to these conditions, the weather across the country will be highly variable:

Northern Vietnam: From June 20 to 22, there will be scattered showers and thunderstorms, with moderate to heavy rainfall in mountainous areas and localized intense downpours. Heavy rain will mostly occur in the evening and at night. Rainfall in the northern midlands and mountains is expected to range from 50–120mm, with some areas possibly exceeding 300mm. Intense rainfall (>100mm/3 hours) could lead to flash floods, landslides, and flooding in low-lying areas.

Central Vietnam (from Thanh Hoa to Phu Yen): From June 20 to 21, there will be isolated showers and thunderstorms in the evening and at night. Daytime conditions will feature heatwaves, with some areas experiencing extreme heat.

Particularly on June 20–21, temperatures from Thanh Hoa to Hue will reach 35–37°C, possibly higher in some areas, with relative humidity dropping to 55–60%. The heatwave in the North and Central Central regions is expected to persist, prompting warnings against heatstroke and dehydration. Residents should stay hydrated and wear sun protection when outdoors.

Other regions: Scattered showers and thunderstorms will occur elsewhere. The Central Highlands and Southern Vietnam will experience almost daily evening rainfall, with some days seeing heavy rain and thunderstorms. Daytime weather will remain humid and warm, cooling down after rainfall.

From June 21 to 23, these regions will see widespread evening thunderstorms, with total rainfall reaching 150–200mm in some areas, and locally exceeding that amount.

Hanoi weather: From June 20 to 22, the capital will see moderate rain, with intermittent sunshine and temperatures ranging from 30–34°C. By June 23–29, cloudy skies and occasional nighttime rain will continue, with daytime highs remaining between 33–35°C and nighttime lows around 26–28°C.

The meteorological agency has issued warnings of lightning, hail, tornadoes, and strong gusty winds during thunderstorms across regions. Localized heavy rain could trigger flash floods, landslides on steep slopes, and flooding in low-lying urban areas.

Authorities and residents are advised to stay alert and take proactive measures to mitigate the impact of extreme weather events.

Detailed 3-day forecast for Hanoi (June 20–22, 2025):

June 20
Day: Partly cloudy, occasional sunshine, chance of afternoon showers and thunderstorms. Light winds.
High: 32–34°C | Humidity: 65–70% | Rain probability: 65–70%
Night: Cloudy, showers and thunderstorms. Light winds.
Low: 24–26°C | Humidity: 88–93% | Rain probability: 75–80%

June 21
Day: Partly cloudy, possible showers and thunderstorms. Light winds.
High: 30–32°C | Humidity: 68–73% | Rain probability: 65–70%
Night: Cloudy, moderate rain. Light winds.
Low: 25–27°C | Humidity: 90–95% | Rain probability: 75–80%

June 22
Day: Partly cloudy, moderate rain. Light winds.
High: 30–32°C | Humidity: 68–73% | Rain probability: 70–75%
Night: Cloudy, moderate rain. Light winds.
Low: 25–27°C | Humidity: 90–95% | Rain probability: 65–70%

Bao Anh