The National Center for Hydro-Meteorological Forecasting has updated the weather forecast for May 20th in the Northwest regions.
- Lowest temperature: 23-26 degrees, in some places below 23 degrees C.
- Highest temperature: 31-34 degrees, in some places above 34 degrees C.
Cloudy, scattered showers and thunderstorms, locally heavy to very heavy rain in some places; especially Southern Lao Cai, Southern Phu Tho have moderate rain, heavy rain and thunderstorms, locally very heavy rain in some places. Light wind. In thunderstorms, there is a possibility of tornadoes, lightning, hail and strong gusts of wind.

With the weather in the Northwest today having scattered showers and thunderstorms, some places have heavy to very heavy rain, especially the South Lao Cai and South Phu Tho areas. Tourists should limit traveling through passes, streams and areas at risk of landslides in the late afternoon and night.
Some notes for tourists exploring the Northwest:
- Bring thin raincoats, anti-slip shoes and waterproof bags for phones and cameras.
- Limit trekking or camping overnight in high mountainous forest areas due to the risk of localized heavy rain, landslides and flash floods.
- If traveling by motorbike through mountain passes such as O Quy Ho, Khau Pha, Pha Din... it is necessary to reduce speed due to slippery road surfaces and fog after rain.
- Follow local weather forecasts before visiting terraced fields, hunting clouds or rowing sup, boating at lakes and streams.
- You should continuously follow local weather bulletins and update heavy rain warnings before participating in outdoor activities or exploring highland villages.