Warm
Average highs sit around 31°C, giving warm days by monthly-average standards.
Weather Guide
Lang Son, Vietnam Average Monthly Weather
Weather score51Mixed annual avg
Best months: October, April, November
Across the year, average daytime temperatures are around 26°C, sunshine averages 4.4h per day, and rainfall totals about 1482mm.
Annual weather
Annual averages
Temp
26°C
Rain
1482mm
Annual total
Sun
4.4h
Weather score
51
Mixed avg
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
Weather scoreWeather score
Trip feel
Wet
Rainfall averages 271mm, so showers are a real planning factor.
Some sun
Sunshine averages 5.8h per day, enough for a balanced month.
Map
Weather map
Compare Lang Son, Vietnam with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
August31°C average high
August is one of Lang Son's warmest months, with daytime heat above the yearly average.
Warmest monthsMay to September
This stretch sets the upper range for average daytime heat.
Rain
August271mm average rain
August is one of Lang Son's wettest months, so rain is likely to be a major planning factor.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
August5.8 hours average sun
August is brighter than Lang Son's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsMay to September
This stretch has the strongest sunshine in the monthly averages.
Weather score
August43 weather score
August scores below Lang Son's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsApril and October to November
These months have the strongest weather score in the monthly averages.
