Weather forecast for Lang Son today, October 21st, tomorrow, October 22nd, and the next 7 days.
TodayWednesday, October 21, 2026In Lang Son, the weather is sunny with little rain in the morning, and there will be showers in the afternoon. Temperatures are moderate.20–32°CThe heaviest rainfall is expected at 2 PM (51% probability).Tomorrow, Thursday, October 22ndIn Lang Son, temperatures will range from 21–31°C, with sunny mornings and little rain, followed by cloudy afternoons with little rain.
Updated multiple times a day·Updated at·
Lang Son at 06:3023°CSunny• Sensation of 25°C
51%There is a possibility of rain this morning and afternoon (Lang Son).
20–32°CLang Son in the next 7 days
3/7Rainy days in the next 7 daysChance of rain ≥ 50%
Weather in Lang Son today, hour by hour
The next 24 hours in Lang Son, from 06:00 today to 05:00 tomorrow, October 22nd.
06:00Now20°chance of rain11%
07:0023°chance of rain8%
08:0026°chance of rain4%
09:0028°chance of rain3%
10:0030°chance of rain2%
11:0032°chance of rain2%
12:0032°chance of rain7%
13:0031°chance of rain14%
14:0028°chance of rain51%
15:0026°chance of rain47%
16:0028°chance of rain25%
17:0026°chance of rain25%
18:0024°chance of rain14%
19:0024°chance of rain13%
20:0023°chance of rain11%
21:0023°chance of rain12%
22:0022°chance of rain12%
23:0022°chance of rain11%
00:0022°chance of rain12%
01:0022°chance of rain12%
02:0021°chance of rain12%
03:0021°chance of rain13%
04:0021°chance of rain14%
05:0021°chance of rain14%
06:0021°chance of rain15%
07:0023°chance of rain12%
08:0025°chance of rain8%
09:0027°chance of rain5%
10:0029°chance of rain14%
11:0030°chance of rain11%
12:0031°chance of rain11%
13:0031°chance of rain11%
14:0029°chance of rain14%
15:0028°chance of rain13%
16:0029°chance of rain10%
17:0027°chance of rain15%
18:0026°chance of rain7%
19:0024°chance of rain7%
20:0023°chance of rain8%
21:0022°chance of rain9%
22:0022°chance of rain10%
23:0021°chance of rain11%
00:0021°chance of rain12%
01:0020°chance of rain12%
02:0020°chance of rain13%
03:0020°chance of rain14%
04:0020°chance of rain14%
05:0020°chance of rain13%
Today according to the schedule
Bright6–11 o'clock
20–30°
Sunny weather, little rain.
Rainfall 2–11%
Afternoon11–17 hours
26–32°
There were showers.
Rainfall 2–51%
Dark17–22 hours
23–26°
Cloudy, with little rain.
Rainfall 11–25%
Night22–6 hours
21–22°
The weather is clear, with little rain.
Rainfall 11–14%
Is it raining in Lang Son today?
Yes, this afternoon
Yes. Today (October 21, 2026), Lang Son will experience showers, with a 57% chance of rain throughout the day, peaking at 2 PM (51%), and temperatures ranging from 20–32°C. If you go out in the afternoon, you should bring a raincoat.
What time does it rain in Lang Son?
Rain showers around 2 PM (51%).
When will the rain stop?
The rain stopped around 4 PM, and there will be little rain tonight.
What is the temperature in Lang Son now?
The temperature in Lang Son was 23°C at 6:30 AM, with a high of 32°C today and a low of 21°C tonight.
Will it rain tomorrow?
Low chance of rain, 17% chance of rain all day; sunny tomorrow morning, little rain, 15% chance; cloudy afternoon, little rain.
Weather forecast for Lang Son tomorrow, October 22, 2026
On Thursday, October 22nd, Lang Son will have temperatures ranging from 21–31°C, with sunny mornings and little rain, followed by cloudy afternoons with little rain; temperatures will remain almost unchanged compared to today.
Weather forecast for Lang Son for the next 7 days (October 21 – October 27, 2026)
Over the next 7 days, Lang Son will experience rain on 3 out of 7 days, with the heaviest rainfall on October 25th (60%) and October 21st (57%); the least rainfall will be on Tuesday, October 27th (6%). Temperatures in Lang Son will fluctuate between 20–32°C, with the coldest nights at 20°C on October 21st and 23rd. There will be no days with temperatures exceeding 35°C.
Weather forecast for Lang Son for the next 3 days (October 21st – October 23rd)
Lang Son 20–32°C, mostly rainy (57%), with little rain on October 22nd (17%), and possible rain on October 23rd (36%).
This weekend (Saturday, October 24th, Sunday, October 25th): Saturday showers (51%), Sunday showers (60%).
Note
Sunny
Shower
It's raining.
Murky
Fog
16–23°: lowest and highest temperatures of the day.
60%: Probability of rain, meaning a 6/10 chance of rain on the day, not 60% of the time. If the probability is 50% or higher, you should bring a raincoat.
Chart: The solid red line represents the highest rainfall, the dashed blue line represents the lowest rainfall, and the light bar represents the probability of rain in Lang Son.
Data from Lang Son. Updated 06:30 on October 21, 2026.
Detailed daily weather forecast for Lang Son in the coming days.
Weather forecast for Lang Son on Friday, October 23, 2026
20–30°C
Lang Son:Morning: Fog, little rain; afternoon: Cloudy, little rain; evening: Fog, little rain. Temperature 20–30°C, 36% chance of rain, wind up to 8 km/h.
Chance of rain36%
Wind8 km/h
Average humidity75%
UVUV 8 (very high)
Bright6–11 o'clock
20–29°
There is fog and little rain.
Rainfall 5–13%
Afternoon11–17 hours
28–30°
Cloudy, with little rain.
Rainfall 11–21%
Dark17–22 hours
23–27°
There is fog and little rain.
Rainfall 11–22%
Night22–6 hours
21–23°
Cloudy, with a possibility of rain.
Rainfall 26–37%
Updated 06:30 on October 21, 2026 · Source: Numerical forecasting model
Weather forecast for Lang Son on Saturday, October 24, 2026
Weekend
21–32°C
Lang Son:Cloudy morning with possible rain, cloudy afternoon with little rain, cloudy evening with little rain. Temperature 21–32°C, 51% chance of rain, wind up to 8 km/h.
Chance of rain51%
Wind8 km/h
Average humidity77%
UVUV 8 (very high)
Bright6–11 o'clock
21–30°
Cloudy, with a possibility of rain.
Rainfall 20–32%
Afternoon11–17 hours
29–32°
Cloudy, with little rain.
Rainfall 16–23%
Dark17–22 hours
24–27°
Cloudy, with little rain.
Rainfall 7–14%
Night22–6 hours
22–24°
Cloudy, with a possibility of rain.
Rainfall 12–31%
Updated 06:30 on October 21, 2026 · Source: Numerical forecasting model
Weather forecast for Lang Son on Sunday, October 25, 2026
Weekend
22–32°C
Lang Son:Cloudy morning with little rain, cloudy afternoon with possible rain, cloudy evening with little rain. Temperature 22–32°C, 60% chance of rain, wind up to 7 km/h.
Chance of rain60%
Wind7 km/h
Average humidity75%
UVUV 7 (high)
Bright6–11 o'clock
22–30°
Cloudy, with little rain.
Rainfall 17–29%
Afternoon11–17 hours
28–32°
Cloudy, with a possibility of rain.
Rainfall 13–37%
Dark17–22 hours
24–27°
Cloudy, with little rain.
Rainfall 17–22%
Night22–6 hours
22–24°
Cloudy, with little rain.
Rainfall 24–27%
Updated 06:30 on October 21, 2026 · Source: Numerical forecasting model
Weather forecast for Lang Son on Monday, October 26, 2026
22–32°C
Lang Son:Cloudy morning with little rain, sunny afternoon with light clouds and dry conditions, cloudy evening with little rain. Temperature 22–32°C, 10% chance of rain, wind up to 12 km/h.
Chance of rain10%
Wind12 km/h
Average humidity64%
UVUV 8 (very high)
Bright6–11 o'clock
23–29°
Cloudy, with little rain.
Rainfall 2–25%
Afternoon11–17 hours
30–32°
Sunny, cloudy, and dry.
Rainfall 2–6%
Dark17–22 hours
24–29°
Cloudy, with little rain.
Rainfall 7–14%
Night22–6 hours
22–23°
The weather is clear, with little rain.
Rainfall 6–17%
Updated 06:30 on October 21, 2026 · Source: Numerical forecasting model
Weather forecast for Lang Son on Tuesday, October 27, 2026
21–30°C
Lang Son:Cloudy morning with little rain, sunny and dry afternoon, clear and dry evening. Temperature 21–30°C, 6% chance of rain, wind up to 18 km/h.
Chance of rain6%
Wind18 km/h
Average humidity60%
UVUV 7 (high)
Bright6–11 o'clock
23–26°
Cloudy, with little rain.
Rainfall 7–19%
Afternoon11–17 hours
28–30°
The weather is sunny and dry.
Rainfall 1–5%
Dark17–22 hours
22–27°
The weather is clear and dry.
Rainfall 4–5%
Night22–6 hours
21°
The weather is clear and dry.
Rain 5%
Updated 06:30 on October 21, 2026 · Source: Numerical forecasting model
UV Index in Lang Son Today
Today's highest UV index is 8 (very high); therefore, avoid sun exposure between 10 AM and 2 PM.
Today, October 21st, the weather in Nghe An will be sunny with scattered clouds, with temperatures in Truong Vinh ranging from 25-32°C; showers and thunderstorms are possible in some areas from the afternoon onwards as a weak cold front approaches.
24-hour weather forecast: Showers are expected in the Northeast region from tomorrow afternoon; thunderstorms are expected in the Southern region and the Central Highlands in the late afternoon and evening, with a risk of tornadoes, lightning, and strong gusts of wind.
Today, October 20, 2026, the weather in Nghe An will be sunny, with temperatures in Truong Vinh around 24-32°C; from the afternoon of October 21, showers are expected to increase again.
Forecast from the night of October 19, 2026 to October 29, 2026: Southern Vietnam, Lam Dong, eastern Dak Lak and Khanh Hoa will experience localized heavy rain, with a warning of tornadoes, lightning, and strong gusts of wind.
Ways to check the weather in Lang Son today
This page compiles hourly, daily, and 7-day forecasts for Lang Son.
News bulletin from the National Center for Meteorological and Hydrological Forecasting
This is where flood, landslide, heavy rain, and cold weather warnings are issued, along with risk levels and validity periods; the list of communes and wards in the warnings serves as a basis for authorities and residents to proactively take preventive measures.
Follow the weather forecast for Lang Son on Nghe An Newspaper.
This page provides hourly, tomorrow's, and 7-day forecasts for Lang Son.
Information from the meteorological agency and emergency numbers in Lang Son.
National forecasting agency
National Center for Meteorological and Hydrological Forecastingnchmf.gov.vn
Meteorological unit in the province
Regional Meteorological and Hydrological Station
Disaster prevention
The provincial disaster prevention agency and the local commune/ward authorities where you reside should call 112 in case of emergency.
Obtain hourly, daily, and 7-day forecast data from the numerical forecasting model, checking the updated data approximately every 5 minutes.
Hourly and daily data for Lang Son are collected in Lang Son.
Specify the update time for each data set.
When the data source is interrupted, display a clear message instead of retaining outdated data.
Weather forecasts are estimates based on models and observational data, and can change depending on actual weather conditions. During periods of dangerous weather, people should follow the instructions of authorities and check the update time before using any forecast.
Frequently Asked Questions about the Weather in Lang Son
Is it raining in Lang Son today?
Yes. Today (October 21, 2026), Lang Son will have showers, with a 57% chance of rain throughout the day, peaking at 2 PM (51%), and temperatures ranging from 20–32°C.
What will the weather be like in Lang Son tomorrow?
Tomorrow, Thursday, October 22nd, Lang Son will have temperatures of 21–31°C, sunny in the morning with little rain, cloudy in the afternoon with little rain, and a 17% chance of rain throughout the day.
What is the temperature in Lang Son right now?
At 06:30 on October 21, 2026, Lang Son's temperature was 23°C, perceived at 25°C; the temperature throughout the day was 20–32°C.
What will the weather be like in Lang Son over the next 7 days?
Lang Son: Rain on 3/7 days, temperatures 20–32°C; heaviest rainfall on October 25th, least rainfall on Tuesday, October 27th.
Will it rain in Lang Son this weekend?
This weekend (Saturday, October 24th, Sunday, October 25th): Saturday showers (51%), Sunday showers (60%).
Weather forecast for neighboring provinces and cities today
