Lạng Sơn weather in March
In March, Lạng Sơn sees average daytime highs of 21°C and overnight lows near 16°C, with 79 mm of rain across 14.4 wet days and about 11.8 hours of daylight. It is the 9th-warmest and 7th-wettest month of the year here.
Highs climb over the month, from about 20°C in the first days to 23°C by the end. The sky is clear or mostly clear about 9% of the time in March, and the air most often feels dry.
Daylight stretches from about 11 h 30 min at the start of March to 12 h 12 min by month's end. Set against the rest of the year, March is Lạng Sơn's 10th-clearest and 3rd-windiest month. For the whole year in context, see Lạng Sơn's year-round climate.
- Daytime high
- 21°
- 9th warmest
- Overnight low
- 16°
- 4th coldest
- Rainfall
- 79 mm
- 14.4 wet days
- Daylight
- 11 h 48 min
- 6:07 AM – 5:58 PM
- Cloud cover
- 82%
- 10th clearest
- Wind
- 11 km/h
- 3rd windiest
- Solar energy
- 2.95 kWh/m²
- Travel score
- 5.5
- 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 March
Highs climb over the month, from about 20°C in the first days to 23°C by the end.
A typical March day in Lạng Sơn reaches about 21°C in the afternoon and slips back to 16°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 27°C. Set against its neighbours, March runs about 3°C warmer than February and about 4°C cooler than April.
| 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) | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 |
| Avg low (°C) | 14 | 14 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 17 | 18 | 18 |
| Avg high (°C) | Avg low (°C) | |
|---|---|---|
| 1 | 20 | 14 |
| 2 | 20 | 14 |
| 3 | 20 | 14 |
| 4 | 20 | 15 |
| 5 | 20 | 15 |
| 6 | 20 | 15 |
| 7 | 21 | 15 |
| 8 | 21 | 15 |
| 9 | 21 | 15 |
| 10 | 21 | 15 |
| 11 | 21 | 15 |
| 12 | 21 | 15 |
| 13 | 21 | 16 |
| 14 | 21 | 16 |
| 15 | 21 | 16 |
| 16 | 21 | 16 |
| 17 | 22 | 16 |
| 18 | 22 | 16 |
| 19 | 22 | 16 |
| 20 | 22 | 16 |
| 21 | 22 | 17 |
| 22 | 22 | 17 |
| 23 | 22 | 17 |
| 24 | 22 | 17 |
| 25 | 22 | 17 |
| 26 | 23 | 17 |
| 27 | 23 | 17 |
| 28 | 23 | 17 |
| 29 | 23 | 17 |
| 30 | 23 | 18 |
| 31 | 23 | 18 |
How March really feels in Lạng Sơn
Once humidity and wind are folded in, March averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.
March sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Lạng Sơn weather by month
How March compares with the rest of the year at a glance. March is the 9th-warmest and 7th-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 March
The sky is clear or mostly clear about 9% of the time in March.
Beyond those clear spells, partly cloudy skies cover about 6% of March, with mostly cloudy or overcast conditions the remaining 85%.
| 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 (%) | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 17 | 17 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 14 | 14 | 14 | 14 |
| Cloudier (%) | 81 | 81 | 81 | 81 | 81 | 82 | 82 | 82 | 83 | 83 | 85 | 86 | 86 | 87 | 87 | 87 | 87 | 88 | 88 | 87 | 87 | 87 | 87 | 87 | 87 | 87 | 86 | 86 | 86 | 86 | 86 |
| Clearer (%) | Cloudier (%) | |
|---|---|---|
| 1 | 19 | 81 |
| 2 | 19 | 81 |
| 3 | 19 | 81 |
| 4 | 19 | 81 |
| 5 | 19 | 81 |
| 6 | 18 | 82 |
| 7 | 18 | 82 |
| 8 | 18 | 82 |
| 9 | 17 | 83 |
| 10 | 17 | 83 |
| 11 | 15 | 85 |
| 12 | 14 | 86 |
| 13 | 14 | 86 |
| 14 | 13 | 87 |
| 15 | 13 | 87 |
| 16 | 13 | 87 |
| 17 | 13 | 87 |
| 18 | 12 | 88 |
| 19 | 12 | 88 |
| 20 | 13 | 87 |
| 21 | 13 | 87 |
| 22 | 13 | 87 |
| 23 | 13 | 87 |
| 24 | 13 | 87 |
| 25 | 13 | 87 |
| 26 | 13 | 87 |
| 27 | 14 | 86 |
| 28 | 14 | 86 |
| 29 | 14 | 86 |
| 30 | 14 | 86 |
| 31 | 14 | 86 |
Chance of precipitation in March
Lạng Sơn gets around 79 mm of rain over 14.4 wet days in March. The line is the day-by-day chance of measurable precipitation.
Day to day, the chance of measurable rain averages around 46% and peaks near 53% on the wettest days. The odds climb 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 (%) | 39 | 39 | 39 | 39 | 39 | 40 | 40 | 40 | 41 | 42 | 42 | 43 | 44 | 45 | 46 | 47 | 48 | 49 | 50 | 50 | 51 | 52 | 52 | 53 | 53 | 53 | 53 | 52 | 52 | 52 | 51 |
| Rain chance (%) | |
|---|---|
| 1 | 39 |
| 2 | 39 |
| 3 | 39 |
| 4 | 39 |
| 5 | 39 |
| 6 | 40 |
| 7 | 40 |
| 8 | 40 |
| 9 | 41 |
| 10 | 42 |
| 11 | 42 |
| 12 | 43 |
| 13 | 44 |
| 14 | 45 |
| 15 | 46 |
| 16 | 47 |
| 17 | 48 |
| 18 | 49 |
| 19 | 50 |
| 20 | 50 |
| 21 | 51 |
| 22 | 52 |
| 23 | 52 |
| 24 | 53 |
| 25 | 53 |
| 26 | 53 |
| 27 | 53 |
| 28 | 52 |
| 29 | 52 |
| 30 | 52 |
| 31 | 51 |
Humidity in March
Most of March feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
By dew point, March lands in the dry band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 33% 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 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Dry (%) | 41 | 41 | 40 | 39 | 38 | 37 | 36 | 34 | 33 | 31 | 30 | 29 | 28 | 27 | 26 | 25 | 24 | 23 | 23 | 22 | 21 | 21 | 20 | 20 | 19 | 18 | 17 | 17 | 16 | 15 | 14 |
| Comfortable (%) | 17 | 17 | 18 | 18 | 18 | 19 | 19 | 19 | 19 | 19 | 19 | 19 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 |
| Humid (%) | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 23 | 23 | 24 | 24 | 24 |
| Muggy (%) | 20 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 24 | 25 | 26 | 27 | 27 | 28 | 29 | 29 | 29 | 29 | 29 | 29 | 29 | 28 | 28 | 28 | 27 | 27 | 27 | 27 | 27 | 27 | 27 |
| Oppressive (%) | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 5 | 6 | 7 | 7 | 8 | 9 | 10 | 10 | 11 | 12 | 13 | 13 | 14 | 15 | 16 | 16 | 17 | 19 |
| Dry (%) | Comfortable (%) | Humid (%) | Muggy (%) | Oppressive (%) | |
|---|---|---|---|---|---|
| 1 | 41 | 17 | 21 | 20 | 1 |
| 2 | 41 | 17 | 21 | 20 | 1 |
| 3 | 40 | 18 | 21 | 20 | 1 |
| 4 | 39 | 18 | 21 | 21 | 1 |
| 5 | 38 | 18 | 21 | 21 | 1 |
| 6 | 37 | 19 | 21 | 22 | 2 |
| 7 | 36 | 19 | 21 | 23 | 2 |
| 8 | 34 | 19 | 22 | 23 | 2 |
| 9 | 33 | 19 | 22 | 24 | 2 |
| 10 | 31 | 19 | 22 | 25 | 3 |
| 11 | 30 | 19 | 22 | 26 | 3 |
| 12 | 29 | 19 | 22 | 27 | 4 |
| 13 | 28 | 18 | 22 | 27 | 4 |
| 14 | 27 | 18 | 22 | 28 | 5 |
| 15 | 26 | 18 | 22 | 29 | 6 |
| 16 | 25 | 18 | 22 | 29 | 7 |
| 17 | 24 | 18 | 22 | 29 | 7 |
| 18 | 23 | 17 | 22 | 29 | 8 |
| 19 | 23 | 17 | 22 | 29 | 9 |
| 20 | 22 | 17 | 22 | 29 | 10 |
| 21 | 21 | 18 | 22 | 29 | 10 |
| 22 | 21 | 18 | 22 | 28 | 11 |
| 23 | 20 | 18 | 22 | 28 | 12 |
| 24 | 20 | 18 | 22 | 28 | 13 |
| 25 | 19 | 18 | 23 | 27 | 13 |
| 26 | 18 | 18 | 23 | 27 | 14 |
| 27 | 17 | 18 | 23 | 27 | 15 |
| 28 | 17 | 18 | 23 | 27 | 16 |
| 29 | 16 | 17 | 24 | 27 | 16 |
| 30 | 15 | 17 | 24 | 27 | 17 |
| 31 | 14 | 17 | 24 | 27 | 19 |
Wind in March
Winds average 11 km/h in March.
Across March, daily wind ranges from about 11 km/h on the calmest days to 11 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) | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 | 11 |
| 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 | 11 | calm |
| 2 | 11 | calm |
| 3 | 11 | calm |
| 4 | 11 | calm |
| 5 | 11 | calm |
| 6 | 11 | calm |
| 7 | 11 | calm |
| 8 | 11 | calm |
| 9 | 11 | calm |
| 10 | 11 | calm |
| 11 | 11 | calm |
| 12 | 11 | calm |
| 13 | 11 | calm |
| 14 | 11 | calm |
| 15 | 11 | calm |
| 16 | 11 | calm |
| 17 | 11 | calm |
| 18 | 11 | calm |
| 19 | 11 | calm |
| 20 | 11 | calm |
| 21 | 11 | calm |
| 22 | 11 | calm |
| 23 | 11 | calm |
| 24 | 11 | calm |
| 25 | 11 | calm |
| 26 | 11 | calm |
| 27 | 11 | calm |
| 28 | 11 | calm |
| 29 | 11 | calm |
| 30 | 11 | calm |
| 31 | 11 | calm |
Sunrise & sunset in March
Daylight runs from about 11 h 30 min at the start of March to 12 h 12 min by month's end. The lit band spans sunrise to sunset each day.
Days grow by about 42 minutes over March. Sunrise moves from 6:20 AM to 5:53 AM, and sunset from 5:52 PM to 6:03 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) | 11.5 | 11.5 | 11.6 | 11.6 | 11.6 | 11.6 | 11.7 | 11.7 | 11.7 | 11.7 | 11.7 | 11.8 | 11.8 | 11.8 | 11.8 | 11.8 | 11.9 | 11.9 | 11.9 | 11.9 | 12.0 | 12.0 | 12.0 | 12.0 | 12.0 | 12.1 | 12.1 | 12.1 | 12.1 | 12.1 | 12.2 |
| Sunrise (AM) | 6:20 | 6:20 | 6:19 | 6:18 | 6:17 | 6:16 | 6:15 | 6:15 | 6:14 | 6:13 | 6:12 | 6:11 | 6:10 | 6:09 | 6:08 | 6:07 | 6:06 | 6:05 | 6:04 | 6:04 | 6:03 | 6:02 | 6:01 | 6:00 | 5:59 | 5:58 | 5:57 | 5:56 | 5:55 | 5:54 | 5:53 |
| Sunset (PM) | 5:52 | 5:52 | 5:53 | 5:53 | 5:54 | 5:54 | 5:55 | 5:55 | 5:55 | 5:56 | 5:56 | 5:56 | 5:57 | 5:57 | 5:58 | 5:58 | 5:58 | 5:59 | 5:59 | 5:59 | 6:00 | 6:00 | 6:00 | 6:01 | 6:01 | 6:01 | 6:02 | 6:02 | 6:02 | 6:03 | 6:03 |
| Daylight (h) | Sunrise (AM) | Sunset (PM) | |
|---|---|---|---|
| 1 | 11.5 | 6:20 | 5:52 |
| 2 | 11.5 | 6:20 | 5:52 |
| 3 | 11.6 | 6:19 | 5:53 |
| 4 | 11.6 | 6:18 | 5:53 |
| 5 | 11.6 | 6:17 | 5:54 |
| 6 | 11.6 | 6:16 | 5:54 |
| 7 | 11.7 | 6:15 | 5:55 |
| 8 | 11.7 | 6:15 | 5:55 |
| 9 | 11.7 | 6:14 | 5:55 |
| 10 | 11.7 | 6:13 | 5:56 |
| 11 | 11.7 | 6:12 | 5:56 |
| 12 | 11.8 | 6:11 | 5:56 |
| 13 | 11.8 | 6:10 | 5:57 |
| 14 | 11.8 | 6:09 | 5:57 |
| 15 | 11.8 | 6:08 | 5:58 |
| 16 | 11.8 | 6:07 | 5:58 |
| 17 | 11.9 | 6:06 | 5:58 |
| 18 | 11.9 | 6:05 | 5:59 |
| 19 | 11.9 | 6:04 | 5:59 |
| 20 | 11.9 | 6:04 | 5:59 |
| 21 | 12.0 | 6:03 | 6:00 |
| 22 | 12.0 | 6:02 | 6:00 |
| 23 | 12.0 | 6:01 | 6:00 |
| 24 | 12.0 | 6:00 | 6:01 |
| 25 | 12.0 | 5:59 | 6:01 |
| 26 | 12.1 | 5:58 | 6:01 |
| 27 | 12.1 | 5:57 | 6:02 |
| 28 | 12.1 | 5:56 | 6:02 |
| 29 | 12.1 | 5:55 | 6:02 |
| 30 | 12.1 | 5:54 | 6:03 |
| 31 | 12.2 | 5:53 | 6:03 |
Solar energy in March
Average shortwave solar energy reaching the ground each day in March, about 2.95 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 — March's 2.95 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) | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.8 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 2.9 | 3.0 | 3.0 | 3.0 | 3.0 | 3.1 | 3.1 | 3.1 | 3.2 | 3.2 | 3.2 | 3.3 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| Solar energy (kWh/m²) | Level | |
|---|---|---|
| 1 | 2.8 | Moderate |
| 2 | 2.8 | Moderate |
| 3 | 2.8 | Moderate |
| 4 | 2.8 | Moderate |
| 5 | 2.8 | Moderate |
| 6 | 2.8 | Moderate |
| 7 | 2.8 | Moderate |
| 8 | 2.8 | Moderate |
| 9 | 2.8 | Moderate |
| 10 | 2.8 | Moderate |
| 11 | 2.8 | Moderate |
| 12 | 2.8 | Moderate |
| 13 | 2.8 | Moderate |
| 14 | 2.8 | Moderate |
| 15 | 2.9 | Moderate |
| 16 | 2.9 | Moderate |
| 17 | 2.9 | Moderate |
| 18 | 2.9 | Moderate |
| 19 | 2.9 | Moderate |
| 20 | 2.9 | Moderate |
| 21 | 3.0 | Moderate |
| 22 | 3.0 | Moderate |
| 23 | 3.0 | Moderate |
| 24 | 3.0 | Moderate |
| 25 | 3.1 | Moderate |
| 26 | 3.1 | Moderate |
| 27 | 3.1 | Moderate |
| 28 | 3.2 | Moderate |
| 29 | 3.2 | Moderate |
| 30 | 3.2 | Moderate |
| 31 | 3.3 | Moderate |
Hazard calendar for Lạng Sơn
None of Lạng Sơn's seasonal hazards are active in March. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.
Lạng Sơn's monsoon runs May–September, when most of the year's rain falls.
Is March a good time to visit Lạng Sơn?
Our two travel scores rate March for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).
March is a reasonable time to visit Lạng Sơn for sightseeing.
What to pack for Lạng Sơn in March
From March's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In March, Lạng Sơn sees daytime highs around 21°C and nights near 16°C. Pack rain gear. About 14 days see rain.
UV index in Lạng Sơn in March
Clear-sky midday UV in March peaks around 9 (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 March
Average fine-particle pollution (PM2.5) through the year — so you can see where March 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).