Lang Son Weather
What is the weather like in Lang Son, Vietnam right now? Currently: °C. .
Colorful rice field in valley in Bac Son, Lang Son, Vietnam
7 Days Weather Forecast
Local hourly Lang Son weather forecast of rain, temperature, sunrise, humidity, wind and pressure.
Sun, 31 August
Thunderstorm with slight hail
High 30°C
Low 24°C
- Sun: 05:35
- Wind: 8.8 km/h
- Humidity: 92%
- Rain: 20.5mm
Mon, 01 September
Thunderstorm
High 30°C
Low 23°C
- Sun: 05:36
- Wind: 7.2 km/h
- Humidity: 92%
- Rain: 3.1mm
Tue, 02 September
Slight rain showers
High 31°C
Low 23°C
- Sun: 05:36
- Wind: 6.9 km/h
- Humidity: 92%
- Rain: 2.7mm
Wed, 03 September
Fog
High 32°C
Low 23°C
- Sun: 05:36
- Wind: 7.6 km/h
- Humidity: 92%
- Rain: 0.1mm
Thu, 04 September
Partly cloudy
High 33°C
Low 25°C
- Sun: 05:37
- Wind: 9.5 km/h
- Humidity: 92%
- Rain: 0.0mm
Fri, 05 September
Overcast
High 32°C
Low 24°C
- Sun: 05:37
- Wind: 9.4 km/h
- Humidity: 92%
- Rain: 0.0mm
Sat, 06 September
Partly cloudy
High 33°C
Low 24°C
- Sun: 05:37
- Wind: 5.9 km/h
- Humidity: 92%
- Rain: 0.0mm
Last updated: August 31, 2025
Lang Son Climate
Lang Son experiences a humid subtropical climate characterized by dry winters, classified as Cwa according to the Köppen climate classification. The region enjoys warm temperatures, with the highest reaching around 31.5°C (88.7°F) and the lowest dipping to about 10.5°C (50.9°F). On average, the yearly temperature is a pleasant 21.8°C (71.28°F). Rainfall is also a significant aspect of Lang Son's climate, with annual averages close to 983.9 millimeters (38.74 inches), contributing to the lush landscapes the region is known for. Overall, the climate in Lang Son offers a mix of warmth and moisture, creating an inviting environment throughout the year.
Monthly Averages
Lang Son experiences a diverse climate throughout the year, with temperatures ranging from a cool 10.5°C in January to a warm 31.5°C in June. Rain is most frequent from May to August, with July seeing nearly 20 rainy days. The weather becomes drier towards the end of the year, especially in December, which averages only 4.8 rainy days. Each month offers a unique experience, making it a fascinating destination for anyone who enjoys varying seasonal changes.| Months | High / Low (°C) | Rain |
|---|---|---|
| January | 17.6° / 10.5° | 7.5 days |
| February | 20.3° / 12.7° | 5.4 days |
| March | 24.1° / 16.2° | 7.4 days |
| April | 27.6° / 19.2° | 9.1 days |
| May | 30.7° / 22.2° | 16.4 days |
| June | 31.5° / 23.8° | 17.4 days |
| July | 31.1° / 23.5° | 19.9 days |
| August | 30.8° / 22.9° | 21.6 days |
| September | 29.9° / 21.7° | 16.3 days |
| October | 26.9° / 18.3° | 8.9 days |
| November | 23.9° / 15.4° | 6.3 days |
| December | 19.0° / 10.9° | 4.8 days |
Frequently asked questions
What is the coldest month in Lang Son?
January is typically the coldest month in Lang Son, with average temperatures dipping to around 10.5°C (50.9°F).
How much rain does Lang Son get every year?
Lang Son receives approximately 983.9 mm (38.74 inches) of rainfall each year, with an average of about 141 rainy days.
What month has the least rain in Lang Son?
The driest month in Lang Son is December, featuring approximately 4.8 days of rain and total precipitation of about 18.8 mm (0.74 inches).
What months are the most humid in Lang Son?
July and August are the most humid months in Lang Son, with average humidity levels reaching around 83.3%.
What month has the least sunshine in Lang Son?
In Lang Son, January is the month with the least sunshine, averaging just 5.7 hours of sunlight per day.
Which month has the most daylight in Lang Son?
In June, Lang Son enjoys an average of **13.4 hours of daylight**, making it the month with the most daylight hours of the year.
What is the hottest month in Lang Son?
June is the hottest month in Lang Son, with temperatures ranging from an average high of 31.5°C (88.7°F) to an average low of 23.8°C (74.8°F).
When does Lang Son have the most sunshine?
June boasts an impressive average of 12.3 hours of sunshine, making it the sunniest month in Lang Son.
What month has the most rainfall in Lang Son?
The wettest month in Lang Son is August, featuring around 21.6 days of rainfall and a total precipitation of about 224.4 mm (8.83 inches).
What month has the least humidity in Lang Son?
December is the least humid month in Lang Son, with a relative humidity of 73.9%.
Which month has the shortest daylight in Lang Son?
December offers the shortest days in Lang Son, with an average of just 10.8 hours of daylight.
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