Home·Vietnam·Lạng Sơn Province

Vietnam · 1991–2020

Best time to visit
Lạng Sơn.

November leads for comfortable weather in Lạng Sơn: typically 24.2°C by day, 14.6°C at night, with 40 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortNovember

Typical high24.2°C

Typical low14.6°C

Rain in November40 mm

Comfort

November

November · March · February

97climate match

Beach

October

October · April · May

83climate match

Outdoors

December

December · February · January

97climate match

The weakest month is August, scoring 23 against November’s 97 — 230 mm of rain falls, and days average 31.5°C, 8° above the 24°C the score treats as ideal.

Month by month

The whole year,
without the guesswork.

The bars show the comfort score. Day and night temperatures come from daily observed highs and lows; rain is the historical monthly estimate.

Jan

6717.4° / 10.1°

Feb

8019.5° / 12.5°

Mar

8421.8° / 15.6°

Apr

7126.9° / 19.6°

May

4930° / 22.3°

Jun

3131.6° / 24°

Jul

2431.9° / 24.2°

Aug

2331.5° / 23.7°

Sep

4830.1° / 22.3°

Oct

7427.8° / 18.9°

Nov

9724.2° / 14.6°

Dec

7819.7° / 10.8°

Monthly climate evidence for Lạng Sơn — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	17.4°C	10.1°C	44 mm	4.2	10 h 56	67	Good coverage
February	19.5°C	12.5°C	24 mm	4.1	11 h 24	80	Good coverage
March	21.8°C	15.6°C	63 mm	6.8	11 h 58	84	Good coverage
April	26.9°C	19.6°C	86 mm	7.2	12 h 37	71	Good coverage
May	30°C	22.3°C	121 mm	9.5	13 h 10	49	Good coverage
June	31.6°C	24°C	179 mm	11.5	13 h 27	31	Good coverage
July	31.9°C	24.2°C	211 mm	13	13 h 21	24	Good coverage
August	31.5°C	23.7°C	230 mm	12.7	12 h 53	23	Good coverage
September	30.1°C	22.3°C	137 mm	8.1	12 h 15	48	Good coverage
October	27.8°C	18.9°C	66 mm	5.2	11 h 36	74	Good coverage
November	24.2°C	14.6°C	40 mm	3.7	11 h 04	97	Good coverage
December	19.7°C	10.8°C	25 mm	3.3	10 h 48	78	Good coverage

Records at LANG SON, 1976–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	29.4°C10 Jan 1998	0.2°C6 Jan 1995	105 mm21 Jan 2005	149 mm2016 · driest 0 mm in 1994	34
February	33.5°C27 Feb 2010	1.8°C8 Feb 2016	62 mm5 Feb 2023	114 mm2022 · driest 1 mm in 1994	34
March	35.2°C17 Mar 1996	5.0°C1 Mar 2008	103 mm28 Mar 1996	188 mm1996 · driest 2 mm in 2010	33
April	38.6°C30 Apr 2024	9.4°C3 Apr 1996	140 mm8 Apr 2006	303 mm2006 · driest 5 mm in 1993	35
May	38.4°C4 May 2012	13.7°C4 May 2022	184 mm10 May 2022	507 mm2022 · driest 0 mm in 1992	36
June	38.6°C25 Jun 2001	17.8°C14 Jun 2013	230 mm11 Jun 1994	339 mm1994 · driest 10 mm in 1993	35
July	37.0°C12 Jul 1998	19.2°C9 Jul 2015	188 mm30 Jul 2024	398 mm2024 · driest 4 mm in 1993	33
August	37.7°C5 Aug 2021	20.0°C28 Aug 2010	445 mm15 Aug 1995	637 mm1995 · driest 2 mm in 2000	34
September	39.8°C24 Sep 1993	14.4°C30 Sep 1998	229 mm17 Sep 2014	419 mm2008 · driest 14 mm in 1993	33
October	35.7°C6 Oct 1992	8.5°C26 Oct 1994	109 mm15 Oct 2020	187 mm2017 · driest 0 mm in 1993	34
November	32.0°C11 Nov 2009	1.0°C30 Nov 1992	148 mm11 Nov 2013	187 mm2015 · driest 0 mm in 1992	34
December	29.5°C4 Dec 2004	-2.5°C21 Dec 1999	41 mm18 Dec 2004	80 mm2013 · driest 0 mm in 2003	34

Typical days per month at LANG SON, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	3	0	<1
February	6	<1	<1
March	8	2	1
April	19	7	2
May	25	17	4
June	27	21	5
July	28	22	5
August	28	22	5
September	27	17	4
October	23	8	2
November	13	1	<1
December	4	0	<1

How often, not how much — every day in LANG SON’s record sorted by what it was actually like, rather than averaged
Month	Warm & dry days	Wet days	Washouts	Week with 3+ wet days	Daytime mean has ranged
January	36%	14%	4%	19%	14.4–19.8°C
February	45%	16%	2%	12%	15.7–22.9°C
March	58%	22%	5%	29%	19.8–24.0°C
April	70%	25%	7%	27%	25.4–28.9°C
May	67%	31%	14%	42%	28.4–30.8°C
June	58%	40%	17%	63%	30.8–32.5°C
July	57%	42%	18%	58%	30.6–33.1°C
August	57%	43%	19%	63%	30.6–32.6°C
September	71%	29%	13%	36%	29.1–30.9°C
October	81%	17%	7%	17%	26.5–28.7°C
November	76%	12%	3%	16%	22.2–26.0°C
December	47%	10%	2%	7%	17.7–21.6°C

A warm and dry day reaches 20°C with under 1 mm of rain; a wet day gets 1 mm or more; a washout gets 10 mm or more. The week column is the share of seven-day stretches in that month, across the station’s whole daily record, that contained three or more wet days — the odds a week-long trip is rained on repeatedly, counted rather than modelled. The last column is the 10th to 90th percentile of that month’s daytime average across individual years: a narrow band means the average is what you will get, a wide one means the average is a midpoint between years that felt quite different.

The evidence behind this page

Nearby, measured,
and named.

Place identity: GeoNames 1576633
NOAA station: VMM00048830 · LANG SON
Station distance: 2.3 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 22 usable years
Daylight: Calculated from latitude 21.85°, mid-month, sunrise to sunset including refraction. Not a station measurement.
Important limit: Historical climate is not a forecast. Nearby stations can miss mountains, coasts, and local microclimates.

These places read the same station, so their numbers are identical — distance from LANG SON is what differs

Pingxiang→Thị Trấn Na Dương→Thị Trấn Na Sầm→Lộc Bình→Thị Trấn Đồng Đăng→Thị Trấn Cao Lộc→

Or put two places side by side: Lạng Sơn vs Pingxiang

Best time to visitLạng Sơn.