Thời tiết ngày mai: Tomorrow’s Weather Vietnam Forecast

Tomorrow’s weather in Vietnam is not a single story—it varies sharply between the heat of Hanoi and the humidity of Ho Chi Minh City. This forecast compares official government data with popular weather websites to help you plan.

Hanoi low: 27–29°C (NCHMF) | Hanoi high: up to 42°C (Thoitiet360) | Rain chance: isolated showers, thunderstorms possible | Wind: Southeast to South, 2–3 (NCHMF)

Snapshot facts: dewpoint in Hanoi 66% (Thoitiet360), wind direction Southeast to South (NCHMF), rainfall possibility isolated thunderstorms in northern regions, UV index high (8-10) in central regions.

What will tomorrow’s weather be like?

Across Vietnam, tomorrow will be very hot. Weather25 reports a high of 91°F (33°C) and night temperature dropping to 82°F (28°C). The morning temperature is 22°C and noon 27°C. The chance of rain in the morning is 0%, but the evening chance jumps to 100%. Met Office’s Vietnam country page lists sunny-day snapshots: Hanoi 35°C, Ho Chi Minh City 34°C, Da Nang 37°C, Hai Phong 33°C.

The pattern: early morning is mild and partly cloudy; late morning brings increasing heat and sun; afternoon peaks with isolated thundershowers; evening cools down with scattered rain. Weather Underground notes Hanoi’s tomorrow will be warmer than today, with current conditions around 10:05 PM GMT+7 on May 21.

Will it rain tomorrow?

Rain probabilities vary by region. In Hanoi, AccuWeather’s hourly forecast shows low rain probabilities from 1 AM to 6 AM, ranging from 6% to 7%. Official warnings from the National Center for Hydro-Meteorological Forecasting indicate isolated thunderstorms possible in northern regions. Ho Chi Minh City shows a thunderstorm risk late evening, with a chance of morning rain at 0% according to Weather25.

What are the chances of thunderstorms?

Thunderstorms are likely in the evening, especially in northern and coastal areas. AccuWeather’s HCMC page forecasts “a thunderstorm in the area late this evening; warm with increasing cloudiness.”

How does rainfall vary by region?

Northern Vietnam (Hanoi, Hai Phong) has isolated showers, while central highlands may see scattered thunderstorms. The south (HCMC) remains mostly dry until evening. The pattern reflects seasonal monsoon influences.

What is tomorrow’s weather in Hanoi?

AccuWeather’s Hanoi forecast for Friday, May 22, 2026 says “Hot with decreasing clouds; caution advised if outside for extended periods of time” with a high of 98°F (37°C) and low of 84°F (29°C). The heat index is 112°F (44°C) and RealFeel is 111°F (43°C). An air-quality warning states the air has reached a high level of pollution and is unhealthy for sensitive groups. Met Office’s dedicated Hanoi page (Weather warnings for Hanoi) includes official warnings alongside temperature, rain, wind, visibility, humidity, and UV.

What is tomorrow’s weather in Ho Chi Minh City?

AccuWeather’s HCMC forecast: high 96°F (36°C), low 81°F (27°C), thunderstorm late evening. Heat index 101°F (38°C), RealFeel 99°F (37°C). Air quality reported as Poor.

What is tomorrow’s weather in Hai Phong?

Met Office reports Hai Phong at 33°C. Coastal breeze, scattered thunderstorms possible.

What is tomorrow’s weather in Lao Cai?

Mountainous region with low 22–24°C, high 30–32°C, possible afternoon rain.

What is tomorrow’s weather in Nghe An?

Hot and humid, low 27–29°C, high 38–40°C, windy conditions.

What is tomorrow’s weather in Ha Giang?

Mountain terrain, low 20–22°C, high 28–30°C, thunderstorm risk.

The implication: City-level forecasts differ significantly, so checking the specific source for your destination is critical.

How to check tomorrow’s weather accurately?

To get the most accurate forecast, follow these steps:

1. Start with the official government source: National Center for Hydro-Meteorological Forecasting (NCHMF).
2. Cross-check with a commercial aggregator like AccuWeather for hourly details and heat index.
3. Use Met Office for international data and warnings.
4. Monitor real-time conditions on Weather Underground.
5. Verify extreme values—if one source claims 42°C and another 35°C, treat the higher end as possible.

Which weather websites are reliable?

Tier-1 sources (government agencies like NCHMF, Met Office) offer high authority. Tier-2 sources (AccuWeather, Weather Underground) provide granular data but may overstate extremes. Tier-3 sources (Weather25) should be used as secondary checks.

Should I use official government data?

Yes—NCHMF and Met Office update forecasts multiple times daily and include official warnings. For travel, combine official data with an aggregator for hourly detail. AccuWeather’s Hanoi page includes an air-quality warning that the air has reached a high level of pollution and is unhealthy for sensitive groups—information not always present on government sites.

What factors influence tomorrow’s weather?

Vietnam’s weather is shaped by two monsoon patterns. The Northeast monsoon brings cool, dry air to the north in winter; the Southwest monsoon brings warm, moist air from the Indian Ocean, causing heavy rain in the south from May to October. Topography also matters: the Hoang Lien Son range affects Lao Cai, while the Truong Son range influences central Vietnam.

How do monsoons affect Vietnam’s weather?

Tomorrow falls in the early rainy season for the south, while the north experiences hot, dry conditions typical of late May. This explains why HCMC may see thunderstorms but Hanoi only isolated showers.

What role do mountains play?

Mountains create local rain shadows and temperature inversions. Lao Cai in the Hoang Lien Son range often has cooler afternoons with thunderstorms. Ha Giang’s karst terrain traps heat during the day, raising afternoon temperatures.

What this means: Forecasts for mountainous cities are less reliable; always check multiple sources and consider elevation.

For a detailed look at the capital, check tomorrows Hanoi weather where a sharp drop of 4°C and scattered rain is expected.

Frequently Asked Questions

“According to the National Center for Hydro-Meteorological Forecasting, Hanoi will experience scattered clouds with temperatures ranging from 27°C to 35°C and isolated showers in the late afternoon.”

“Thoitiet360 reports hourly data showing a high of 42°C in the afternoon, which is significantly higher than official government forecasts. This discrepancy suggests possible heat island effects in inner Hanoi.”

Confirmed facts

• Maximum temperature in Hanoi up to 42°C (Thoitiet360).
• Wind direction Southeast to South (NCHMF).
• AccuWeather’s Hanoi heat index 112°F.
• AccuWeather’s HCMC air quality Poor.

Unclear or uncertain

• Exact timing of thunderstorms in HCMC.
• Precipitation amounts for specific neighborhoods.

Pattern: When official and aggregator data diverge widely (e.g., 35°C vs 42°C), the aggregator is likely capturing urban microclimates—plan for the worst case.