Lạng Sơn weather in February

In February, Lạng Sơn sees average daytime highs of 19°C and overnight lows near 13°C, with 44 mm of rain across 10.1 wet days and about 11.2 hours of daylight. It is the 11th-warmest and 12th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 20°C by the end. The sky is clear or mostly clear about 12% of the time in February, and the air most often feels dry.

Daylight stretches from about 11 hours at the start of February to 11 h 30 min by month's end. Set against the rest of the year, February is Lạng Sơn's 8th-clearest and 4th-windiest month. For the whole year in context, see Lạng Sơn's year-round climate.

Daytime high
19°
11th warmest
Overnight low
13°
3rd coldest
Rainfall
44 mm
10.1 wet days
Daylight
11 h 18 min
6:30 AM – 5:45 PM
Cloud cover
81%
8th clearest
Wind
10 km/h
4th windiest
Solar energy
2.54 kWh/m²
Travel score
5.6
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 February

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 20°C by the end.

A typical February day in Lạng Sơn reaches about 19°C in the afternoon and slips back to 13°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 11°C and 25°C. Set against its neighbours, February runs about 2°C warmer than January and about 3°C cooler than March.

10°15°20°25°30°151015202528
Avg high (°C)Avg low (°C)
11711
21712
31812
41812
51812
61812
71812
81812
91812
101813
111913
121913
131913
141913
151913
161913
171913
181913
191913
201913
211914
221914
231914
241914
252014
262014
272014
282014

How February really feels in Lạng Sơn

Once humidity and wind are folded in, February 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.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

February 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 February compares with the rest of the year at a glance. February is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 11°5711.110.85.1
Feb19° / 13°4410.111.25.6
Mar21° / 16°7914.411.85.5
Apr26° / 20°9714.912.55.5
May29° / 23°22121.2134.0
Jun30° / 25°25723.613.33.0
Jul31° / 25°27024.913.22.9
Aug30° / 24°28525.312.73.0
Sep29° / 23°16418.312.14.2
Oct27° / 20°7510.911.56.4
Nov23° / 16°507.9117.1
Dec19° / 12°458.210.76.3

Cloud cover in February

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in February.

Beyond those clear spells, partly cloudy skies cover about 8% of February, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202528
Clearer (%)Cloudier (%)
12377
22278
32278
42278
52278
62377
72278
82179
92179
102179
112179
122080
132080
142080
151981
161981
171981
181882
191783
201783
211783
221783
231783
241882
251882
261981
271981
282080

Chance of precipitation in February

Any precipitation

Lạng Sơn gets around 44 mm of rain over 10.1 wet days in February, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 35% and peaks near 40% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202528
Rain chance (%)
133
233
332
432
532
632
732
832
933
1033
1133
1233
1334
1434
1535
1636
1736
1837
1938
2038
2139
2239
2339
2439
2540
2640
2739
2839

Humidity in February

DryComfortableHumidMuggyOppressiveMiserable

Most of February feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, February lands in the dry band about 51% of days. Sticky, muggy-or-worse air turns up on roughly 13% of them.

0%25%50%75%100%151015202528
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
163171370
263171370
361181380
461181380
558191490
658191490
7561915100
8561915100
9541916110
10541916110
11521917120
12511918120
13501919120
14491919130
15491920130
16481821130
17471821140
18471722140
19461722150
20461722150
21451622160
22451622170
23451622170
24441621181
25441621181
26431721181
27431721191
28421721191

Wind in February

Winds average 10 km/h in February.

Across February, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202528
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm

Sunrise & sunset in February

DaylightNight

Daylight runs from about 11 hours at the start of February to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 30 minutes over February. Sunrise moves from 6:36 AM to 6:21 AM, and sunset from 5:37 PM to 5:52 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202528
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:365:37
211.06:365:37
311.06:355:38
411.16:355:39
511.16:355:39
611.16:345:40
711.16:345:41
811.16:345:41
911.16:335:42
1011.26:335:42
1111.26:325:43
1211.26:325:43
1311.26:315:44
1411.26:315:45
1511.36:305:45
1611.36:295:46
1711.36:295:46
1811.36:285:47
1911.36:285:47
2011.36:275:48
2111.46:265:48
2211.46:265:49
2311.46:255:49
2411.46:245:50
2511.46:235:50
2611.56:235:51
2711.56:225:51
2811.56:215:52

Solar energy in February

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in February, about 2.54 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 — February's 2.54 kWh/m² sits near the bottom.

0123151015202528
Solar energy (kWh/m²)Level
12.4Moderate
22.5Moderate
32.5Moderate
42.5Moderate
52.5Moderate
62.5Moderate
72.5Moderate
82.5Moderate
92.6Moderate
102.6Moderate
112.6Moderate
122.6Moderate
132.6Moderate
142.6Moderate
152.6Moderate
162.5Moderate
172.5Moderate
182.6Moderate
192.6Moderate
202.6Moderate
212.6Moderate
222.6Moderate
232.6Moderate
242.6Moderate
252.7Moderate
262.7Moderate
272.7Moderate
282.7Moderate
Planning a trip in February

Hazard calendar for Lạng Sơn

In seasonPeak

None of Lạng Sơn's seasonal hazards are active in February. 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.

Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is February a good time to visit Lạng Sơn?

Our two travel scores rate February for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

5.6
Sightseeing
4th-best month of the year
2.2
Beach & pool
11th-best month of the year

February is a reasonable time to visit Lạng Sơn for sightseeing.

What to pack for Lạng Sơn in February

From February's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In February, Lạng Sơn sees daytime highs around 19°C and nights near 13°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Lạng Sơn in February

LowModerateHighVery highExtreme

Clear-sky midday UV in February peaks around 7 — enough to warrant sun protection. 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highVery highExtremeVery highHighJun 23UV 12Dec 14UV 6
UV index (midday)Level
Jan6High
Feb7High
Mar9Very high
Apr7High
May9Very high
Jun12Extreme
Jul12Extreme
Aug10Extreme
Sep10Very high
Oct8Very high
Nov6High
Dec6High

Air quality in Lạng Sơn in February

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where February 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).

0204060JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorModeratePoorUnhealthyDec 2358 µg/m³Jul 1625 µg/m³
PM2.5 (µg/m³)Level
Jan57Unhealthy
Feb55Unhealthy
Mar55Poor
Apr54Poor
May37Poor
Jun29Moderate
Jul25Moderate
Aug29Moderate
Sep36Poor
Oct43Poor
Nov50Poor
Dec58Unhealthy
Location & terrain

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.

3 km
171 m
16 km
978 m
80 km
1,481 m
treesgrasslandcroplandartificial surfacesbare terrainwater
February weather nearby: Thị Trấn Na Dương 26 km · Thị Trấn Thất Khê 54 km · Chũ 57 km · Thị Trấn Ba Chẽ 84 km · Bắc Giang 87 km · Thị Trấn Tiên Yên 88 km · Thị Trấn Đông Triều 89 km · Thị Trấn Mạo Khê 90 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
none 86%Catholic 6%Buddhist 6%Protestant 1%

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).