Lạng Sơn weather in August
In August, Lạng Sơn sees average daytime highs of 30°C and overnight lows near 24°C, with 285 mm of rain across 25.3 wet days and about 12.7 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.
Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 9% of the time in August, and the air most often feels miserable.
Daylight stretches from about 13 hours at the start of August to 12 h 30 min by month's end. Set against the rest of the year, August is Lạng Sơn's 9th-clearest and 12th-windiest month. For the whole year in context, see Lạng Sơn's year-round climate.
- Daytime high
- 30°
- 2nd warmest
- Overnight low
- 24°
- 10th coldest
- Rainfall
- 285 mm
- 25.3 wet days
- Daylight
- 12 h 48 min
- 5:34 AM – 6:20 PM
- Cloud cover
- 81%
- 9th clearest
- Wind
- 7 km/h
- 12th windiest
- Solar energy
- 4.49 kWh/m²
- Travel score
- 3.0
- out of 10
Lạng Sơn is provincial city of Vietnam.
- Density
- 2,533/km²
- people per km²
- Founded
- 2002
Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.
Temperature in August
Day-to-day highs hold fairly steady near 30°C through the month.
A typical August day in Lạng Sơn reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 33°C. Set against its neighbours, August runs on par with July and about 1°C warmer than September.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 | 30 |
| Avg low (°C) | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 24 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 31 | 25 |
| 2 | 31 | 25 |
| 3 | 31 | 25 |
| 4 | 31 | 25 |
| 5 | 31 | 25 |
| 6 | 31 | 25 |
| 7 | 31 | 25 |
| 8 | 31 | 25 |
| 9 | 31 | 25 |
| 10 | 31 | 24 |
| 11 | 31 | 24 |
| 12 | 30 | 24 |
| 13 | 30 | 24 |
| 14 | 30 | 24 |
| 15 | 30 | 24 |
| 16 | 30 | 24 |
| 17 | 30 | 24 |
| 18 | 30 | 24 |
| 19 | 30 | 24 |
| 20 | 30 | 24 |
| 21 | 30 | 24 |
| 22 | 30 | 24 |
| 23 | 30 | 24 |
| 24 | 30 | 24 |
| 25 | 30 | 24 |
| 26 | 30 | 24 |
| 27 | 30 | 24 |
| 28 | 30 | 24 |
| 29 | 30 | 24 |
| 30 | 30 | 24 |
| 31 | 30 | 24 |
How August really feels in Lạng Sơn
Once humidity and wind are folded in, August averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
The story in August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Lạng Sơn weather by month
How August compares with the rest of the year at a glance. August is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 17° / 11° | 57 | 11.1 | 10.8 | 5.1 |
| Feb | 19° / 13° | 44 | 10.1 | 11.2 | 5.6 |
| Mar | 21° / 16° | 79 | 14.4 | 11.8 | 5.5 |
| Apr | 26° / 20° | 97 | 14.9 | 12.5 | 5.5 |
| May | 29° / 23° | 221 | 21.2 | 13 | 4.0 |
| Jun | 30° / 25° | 257 | 23.6 | 13.3 | 3.0 |
| Jul | 31° / 25° | 270 | 24.9 | 13.2 | 2.9 |
| Aug | 30° / 24° | 285 | 25.3 | 12.7 | 3.0 |
| Sep | 29° / 23° | 164 | 18.3 | 12.1 | 4.2 |
| Oct | 27° / 20° | 75 | 10.9 | 11.5 | 6.4 |
| Nov | 23° / 16° | 50 | 7.9 | 11 | 7.1 |
| Dec | 19° / 12° | 45 | 8.2 | 10.7 | 6.3 |
Cloud cover in August
The sky is clear or mostly clear about 9% of the time in August.
Beyond those clear spells, partly cloudy skies cover about 10% of August, with mostly cloudy or overcast conditions the remaining 81%.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Clearer (%) | 17 | 17 | 17 | 17 | 17 | 17 | 16 | 16 | 16 | 15 | 15 | 16 | 17 | 16 | 16 | 17 | 18 | 18 | 19 | 20 | 21 | 21 | 22 | 24 | 25 | 24 | 25 | 25 | 26 | 26 | 27 |
| Cloudier (%) | 83 | 83 | 83 | 83 | 83 | 83 | 84 | 84 | 84 | 85 | 85 | 84 | 83 | 84 | 84 | 83 | 82 | 82 | 81 | 80 | 79 | 79 | 78 | 76 | 75 | 76 | 75 | 75 | 74 | 74 | 73 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 17 | 83 |
| 2 | 17 | 83 |
| 3 | 17 | 83 |
| 4 | 17 | 83 |
| 5 | 17 | 83 |
| 6 | 17 | 83 |
| 7 | 16 | 84 |
| 8 | 16 | 84 |
| 9 | 16 | 84 |
| 10 | 15 | 85 |
| 11 | 15 | 85 |
| 12 | 16 | 84 |
| 13 | 17 | 83 |
| 14 | 16 | 84 |
| 15 | 16 | 84 |
| 16 | 17 | 83 |
| 17 | 18 | 82 |
| 18 | 18 | 82 |
| 19 | 19 | 81 |
| 20 | 20 | 80 |
| 21 | 21 | 79 |
| 22 | 21 | 79 |
| 23 | 22 | 78 |
| 24 | 24 | 76 |
| 25 | 25 | 75 |
| 26 | 24 | 76 |
| 27 | 25 | 75 |
| 28 | 25 | 75 |
| 29 | 26 | 74 |
| 30 | 26 | 74 |
| 31 | 27 | 73 |
Chance of precipitation in August
Lạng Sơn gets around 285 mm of rain over 25.3 wet days in August, the wettest month. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 82% and peaks near 86% on the wettest days. The odds ease toward the end of the month.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Rain chance (%) | 84 | 85 | 85 | 85 | 85 | 85 | 86 | 86 | 86 | 86 | 86 | 85 | 85 | 84 | 84 | 83 | 83 | 82 | 81 | 81 | 80 | 79 | 78 | 78 | 77 | 76 | 76 | 75 | 75 | 74 | 74 |
| Rain chance (%) | |
|---|---|
| 1 | 84 |
| 2 | 85 |
| 3 | 85 |
| 4 | 85 |
| 5 | 85 |
| 6 | 85 |
| 7 | 86 |
| 8 | 86 |
| 9 | 86 |
| 10 | 86 |
| 11 | 86 |
| 12 | 85 |
| 13 | 85 |
| 14 | 84 |
| 15 | 84 |
| 16 | 83 |
| 17 | 83 |
| 18 | 82 |
| 19 | 81 |
| 20 | 81 |
| 21 | 80 |
| 22 | 79 |
| 23 | 78 |
| 24 | 78 |
| 25 | 77 |
| 26 | 76 |
| 27 | 76 |
| 28 | 75 |
| 29 | 75 |
| 30 | 74 |
| 31 | 74 |
Humidity in August
Most of August feels miserable — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, August lands in the miserable band about 64% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Muggy (%) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 3 |
| Oppressive (%) | 27 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 27 | 28 | 30 | 31 | 32 | 34 | 36 | 37 | 39 | 41 | 43 | 44 | 45 | 47 | 48 | 49 | 49 | 50 | 50 | 51 |
| Miserable (%) | 73 | 73 | 73 | 74 | 75 | 75 | 75 | 75 | 75 | 74 | 74 | 73 | 72 | 69 | 68 | 67 | 65 | 63 | 62 | 60 | 58 | 56 | 54 | 53 | 51 | 50 | 49 | 48 | 48 | 47 | 46 |
| Muggy (%) | Oppressive (%) | Miserable (%) | |
|---|---|---|---|
| 1 | 0 | 27 | 73 |
| 2 | 0 | 27 | 73 |
| 3 | 0 | 27 | 73 |
| 4 | 0 | 26 | 74 |
| 5 | 0 | 25 | 75 |
| 6 | 0 | 25 | 75 |
| 7 | 0 | 25 | 75 |
| 8 | 0 | 25 | 75 |
| 9 | 0 | 25 | 75 |
| 10 | 0 | 26 | 74 |
| 11 | 0 | 26 | 74 |
| 12 | 0 | 27 | 73 |
| 13 | 0 | 28 | 72 |
| 14 | 1 | 30 | 69 |
| 15 | 1 | 31 | 68 |
| 16 | 1 | 32 | 67 |
| 17 | 1 | 34 | 65 |
| 18 | 1 | 36 | 63 |
| 19 | 1 | 37 | 62 |
| 20 | 1 | 39 | 60 |
| 21 | 1 | 41 | 58 |
| 22 | 1 | 43 | 56 |
| 23 | 2 | 44 | 54 |
| 24 | 2 | 45 | 53 |
| 25 | 2 | 47 | 51 |
| 26 | 2 | 48 | 50 |
| 27 | 2 | 49 | 49 |
| 28 | 2 | 49 | 48 |
| 29 | 2 | 50 | 48 |
| 30 | 3 | 50 | 47 |
| 31 | 3 | 51 | 46 |
Wind in August
Winds average 7 km/h in August, the calmest month.
Across August, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Wind speed (km/h) | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 7 |
| Feels | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm | calm |
| Wind speed (km/h) | Feels | |
|---|---|---|
| 1 | 7 | calm |
| 2 | 7 | calm |
| 3 | 7 | calm |
| 4 | 7 | calm |
| 5 | 7 | calm |
| 6 | 7 | calm |
| 7 | 7 | calm |
| 8 | 7 | calm |
| 9 | 7 | calm |
| 10 | 7 | calm |
| 11 | 7 | calm |
| 12 | 7 | calm |
| 13 | 7 | calm |
| 14 | 7 | calm |
| 15 | 7 | calm |
| 16 | 7 | calm |
| 17 | 7 | calm |
| 18 | 7 | calm |
| 19 | 7 | calm |
| 20 | 7 | calm |
| 21 | 7 | calm |
| 22 | 7 | calm |
| 23 | 7 | calm |
| 24 | 7 | calm |
| 25 | 7 | calm |
| 26 | 7 | calm |
| 27 | 7 | calm |
| 28 | 7 | calm |
| 29 | 7 | calm |
| 30 | 7 | calm |
| 31 | 7 | calm |
Sunrise & sunset in August
Daylight runs from about 13 hours at the start of August to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.
Days shrink by about 30 minutes over August. Sunrise moves from 5:29 AM to 5:39 AM, and sunset from 6:29 PM to 6:07 PM.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight (h) | 13.0 | 13.0 | 13.0 | 13.0 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.9 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.8 | 12.7 | 12.7 | 12.7 | 12.7 | 12.7 | 12.6 | 12.6 | 12.6 | 12.6 | 12.6 | 12.5 | 12.5 | 12.5 | 12.5 | 12.5 |
| Sunrise (AM) | 5:29 | 5:29 | 5:29 | 5:30 | 5:30 | 5:31 | 5:31 | 5:31 | 5:32 | 5:32 | 5:33 | 5:33 | 5:33 | 5:34 | 5:34 | 5:34 | 5:35 | 5:35 | 5:35 | 5:36 | 5:36 | 5:36 | 5:37 | 5:37 | 5:37 | 5:38 | 5:38 | 5:38 | 5:39 | 5:39 | 5:39 |
| Sunset (PM) | 6:29 | 6:29 | 6:28 | 6:28 | 6:27 | 6:27 | 6:26 | 6:25 | 6:25 | 6:24 | 6:23 | 6:23 | 6:22 | 6:21 | 6:21 | 6:20 | 6:19 | 6:18 | 6:17 | 6:17 | 6:16 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 | 6:11 | 6:10 | 6:09 | 6:08 | 6:07 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 13.0 | 5:29 | 6:29 |
| 2 | 13.0 | 5:29 | 6:29 |
| 3 | 13.0 | 5:29 | 6:28 |
| 4 | 13.0 | 5:30 | 6:28 |
| 5 | 12.9 | 5:30 | 6:27 |
| 6 | 12.9 | 5:31 | 6:27 |
| 7 | 12.9 | 5:31 | 6:26 |
| 8 | 12.9 | 5:31 | 6:25 |
| 9 | 12.9 | 5:32 | 6:25 |
| 10 | 12.9 | 5:32 | 6:24 |
| 11 | 12.8 | 5:33 | 6:23 |
| 12 | 12.8 | 5:33 | 6:23 |
| 13 | 12.8 | 5:33 | 6:22 |
| 14 | 12.8 | 5:34 | 6:21 |
| 15 | 12.8 | 5:34 | 6:21 |
| 16 | 12.8 | 5:34 | 6:20 |
| 17 | 12.7 | 5:35 | 6:19 |
| 18 | 12.7 | 5:35 | 6:18 |
| 19 | 12.7 | 5:35 | 6:17 |
| 20 | 12.7 | 5:36 | 6:17 |
| 21 | 12.7 | 5:36 | 6:16 |
| 22 | 12.6 | 5:36 | 6:15 |
| 23 | 12.6 | 5:37 | 6:14 |
| 24 | 12.6 | 5:37 | 6:13 |
| 25 | 12.6 | 5:37 | 6:12 |
| 26 | 12.6 | 5:38 | 6:11 |
| 27 | 12.5 | 5:38 | 6:11 |
| 28 | 12.5 | 5:38 | 6:10 |
| 29 | 12.5 | 5:39 | 6:09 |
| 30 | 12.5 | 5:39 | 6:08 |
| 31 | 12.5 | 5:39 | 6:07 |
Solar energy in August
Average shortwave solar energy reaching the ground each day in August, about 4.49 kWh/m².
For context, solar energy here swings from a low near 2.23 kWh/m² to a high of 4.72 kWh/m² in July across the year — August's 4.49 kWh/m² falls in the middle.
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | 24 | 25 | 26 | 27 | 28 | 29 | 30 | 31 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Solar energy (kWh/m²) | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.4 | 4.4 | 4.4 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 | 4.5 |
| Level | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright | Bright |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 4.5 | Bright |
| 2 | 4.5 | Bright |
| 3 | 4.5 | Bright |
| 4 | 4.5 | Bright |
| 5 | 4.5 | Bright |
| 6 | 4.5 | Bright |
| 7 | 4.5 | Bright |
| 8 | 4.5 | Bright |
| 9 | 4.5 | Bright |
| 10 | 4.5 | Bright |
| 11 | 4.4 | Bright |
| 12 | 4.4 | Bright |
| 13 | 4.4 | Bright |
| 14 | 4.5 | Bright |
| 15 | 4.5 | Bright |
| 16 | 4.5 | Bright |
| 17 | 4.5 | Bright |
| 18 | 4.5 | Bright |
| 19 | 4.5 | Bright |
| 20 | 4.5 | Bright |
| 21 | 4.5 | Bright |
| 22 | 4.5 | Bright |
| 23 | 4.5 | Bright |
| 24 | 4.5 | Bright |
| 25 | 4.5 | Bright |
| 26 | 4.5 | Bright |
| 27 | 4.5 | Bright |
| 28 | 4.5 | Bright |
| 29 | 4.5 | Bright |
| 30 | 4.5 | Bright |
| 31 | 4.5 | Bright |
Hazard calendar for Lạng Sơn
In August, Lạng Sơn sits inside its monsoon season. The full year is below, with each hazard's peak months called out.
Lạng Sơn's monsoon runs May–September, when most of the year's rain falls.
Is August a good time to visit Lạng Sơn?
Our two travel scores rate August for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
August is a weaker month for outdoor sightseeing in Lạng Sơn.
What to pack for Lạng Sơn in August
From August's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In August, Lạng Sơn sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. About 25 days see rain.
UV index in Lạng Sơn in August
Clear-sky midday UV in August peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Lạng Sơn peaks around June 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 6 (high).
The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 6 | 7 | 9 | 7 | 9 | 12 | 12 | 10 | 10 | 8 | 6 | 6 |
| Level | High | High | Very high | High | Very high | Extreme | Extreme | Extreme | Very high | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | High |
| Mar | 9 | Very high |
| Apr | 7 | High |
| May | 9 | Very high |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 10 | Extreme |
| Sep | 10 | Very high |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 6 | High |
Air quality in Lạng Sơn in August
Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.
Air quality in Lạng Sơn is worst in December — around 58 µg/m³ PM2.5 (unhealthy), about 2.3× the cleanest month (July, 25 µg/m³).
Modeled monthly averages (CAMS reanalysis, 2015–2024).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 57 | 55 | 55 | 54 | 37 | 29 | 25 | 29 | 36 | 43 | 50 | 58 |
| Level | Unhealthy | Unhealthy | Poor | Poor | Poor | Moderate | Moderate | Moderate | Poor | Poor | Poor | Unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 57 | Unhealthy |
| Feb | 55 | Unhealthy |
| Mar | 55 | Poor |
| Apr | 54 | Poor |
| May | 37 | Poor |
| Jun | 29 | Moderate |
| Jul | 25 | Moderate |
| Aug | 29 | Moderate |
| Sep | 36 | Poor |
| Oct | 43 | Poor |
| Nov | 50 | Poor |
| Dec | 58 | Unhealthy |
Where is Lạng Sơn?
Lạng Sơn sits at 21.9°N, 106.8°E, 265 m above sea level, in Vietnam. The nearest listed city is Thị Trấn Na Dương, 26 km away.
Topography around Lạng Sơn
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Lạng Sơn.
Within 3 km, the terrain around Lạng Sơn has only modest variations in elevation — a maximum elevation change of 171 m around an average of 282 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 978 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,481 m.
The land around Lạng Sơn is covered by trees (46%) and artificial surfaces (32%) within 3 km, trees (80%) within 16 km, and trees (89%) within 80 km.
Vietnam travel facts
- Travel advisory
- Level 1
- Exercise Normal Precautions
- Power plugs
- Type A / B / C / F
- 220 V · 50 Hz
- Prices
- ≈ 29% of US
- price level, 2025
- GDP per capita
- $5,066
- 2025
- Happiness
- 6.4 / 10
- World Happiness, 2025
- Safe drinking water
- 59%
- of population, 2024
- Homicide rate
- 1.5
- per 100k, 2011
- Road deaths
- 30.6
- per 100k/yr, 2019
- Income group
- Upper middle
- World Bank
- English
- Moderate
- EF EPI 500
- Religion
Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.
Data sources
Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Lạng Sơn (21.8526°, 106.761°, elevation 265 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).