Home·Vietnam·Sơn La Province

Vietnam · 1991–2020

Best time to visit
Sơn La.

February leads for comfortable weather in Sơn La: typically 24.4°C by day, 12.7°C at night, with 21 mm of rain. Based on measured 1991–2020 NOAA station history.

Best comfortFebruary

Typical high24.4°C

Typical low12.7°C

Rain in February21 mm

Comfort

February

February · November · December

95climate match

Beach

October

October · September · March

86climate match

Outdoors

January

January · December · February

93climate match

The weakest month is July, scoring 25 against February’s 95 — 245 mm of rain falls, and days average 29.9°C, 6° 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

8421.6° / 11°

Feb

9524.4° / 12.7°

Mar

8327.5° / 15.9°

Apr

5629.9° / 18.9°

May

4230.4° / 20.9°

Jun

3630.3° / 22.5°

Jul

2529.9° / 22.4°

Aug

2630.1° / 22.1°

Sep

5729.5° / 20.7°

Oct

7827.9° / 18.5°

Nov

9525.1° / 14.5°

Dec

8621.8° / 11.2°

Monthly climate evidence for Sơn La — daylight is calculated from latitude, everything else is measured
Month	Day	Night	Rain	Wet days	Daylight	Comfort	Coverage
January	21.6°C	11°C	37 mm	2.9	10 h 58	84	Good coverage
February	24.4°C	12.7°C	21 mm	2.2	11 h 25	95	Good coverage
March	27.5°C	15.9°C	47 mm	5.3	11 h 58	83	Good coverage
April	29.9°C	18.9°C	116 mm	9.8	12 h 37	56	Good coverage
May	30.4°C	20.9°C	163 mm	12.2	13 h 08	42	Good coverage
June	30.3°C	22.5°C	178 mm	13.1	13 h 25	36	Good coverage
July	29.9°C	22.4°C	245 mm	17.1	13 h 19	25	Good coverage
August	30.1°C	22.1°C	249 mm	15.8	12 h 52	26	Good coverage
September	29.5°C	20.7°C	102 mm	8.8	12 h 14	57	Good coverage
October	27.9°C	18.5°C	49 mm	4.2	11 h 37	78	Good coverage
November	25.1°C	14.5°C	30 mm	2.6	11 h 06	95	Good coverage
December	21.8°C	11.2°C	26 mm	2.2	10 h 50	86	Good coverage

Records at SON LA, 1997–2026
Month	Record high	Record low	Wettest day	Wettest / driest month	Years
January	31.5°C30 Jan 2005	0.8°C3 Jan 2009	54 mm4 Jan 2012	141 mm2017 · driest 0 mm in 1998	29
February	34.3°C22 Feb 2009	0.5°C9 Feb 2016	64 mm19 Feb 2022	117 mm2022 · driest 0 mm in 2009	29
March	36.6°C31 Mar 2007	6.6°C6 Mar 2005	50 mm23 Mar 2022	109 mm2011 · driest 2 mm in 2024	28
April	38.2°C28 Apr 2024	8.5°C1 Apr 1998	101 mm30 Apr 2003	273 mm2003 · driest 22 mm in 2024	30
May	38.0°C20 May 2019	14.7°C7 May 2007	150 mm24 May 2016	348 mm2016 · driest 6 mm in 1997	30
June	37.0°C1 Jun 2023	16.8°C13 Jun 2013	220 mm25 Jun 2015	400 mm2022 · driest 11 mm in 1997	30
July	39.9°C18 Jul 2014	19.0°C8 Jul 2015	174 mm24 Jul 2024	601 mm2024 · driest 112 mm in 1997	29
August	34.4°C6 Aug 2003	19.3°C20 Aug 2002	81 mm28 Aug 2018	400 mm2018 · driest 62 mm in 1998	29
September	39.0°C13 Sep 2004	14.5°C30 Sep 1998	131 mm23 Sep 2015	274 mm2015 · driest 2 mm in 1999	29
October	39.8°C5 Oct 1999	10.0°C10 Oct 2002	92 mm5 Oct 2008	149 mm2008 · driest 0 mm in 2004	29
November	34.0°C13 Nov 2005	0.7°C27 Nov 2007	58 mm3 Nov 2008	144 mm2014 · driest 0 mm in 2024	29
December	30.6°C2 Dec 2005	0.5°C27 Dec 1999	67 mm26 Dec 2002	109 mm2013 · driest 0 mm in 2014	29

Typical days per month at SON LA, 1991–2020
Month	Days 25°C+	Days 30°C+	Heavy rain (10 mm+)
January	10	<1	<1
February	14	5	<1
March	19	11	1
April	23	15	4
May	26	17	5
June	27	18	5
July	28	15	7
August	27	16	6
September	27	14	3
October	25	6	1
November	16	1	<1
December	7	<1	<1

How often, not how much — every day in SON LA’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	58%	10%	4%	9%	19.5–23.4°C
February	70%	8%	2%	3%	21.9–27.3°C
March	77%	16%	5%	16%	25.8–29.6°C
April	70%	30%	13%	40%	27.9–32.4°C
May	57%	39%	17%	55%	28.4–32.0°C
June	52%	44%	18%	67%	29.3–31.0°C
July	44%	54%	23%	78%	28.9–30.7°C
August	48%	52%	25%	74%	28.9–30.7°C
September	71%	31%	11%	36%	29.0–30.1°C
October	86%	13%	4%	9%	26.5–28.8°C
November	85%	9%	3%	7%	23.4–27.4°C
December	67%	7%	2%	5%	19.2–23.7°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 1567681
NOAA station: VMM00048806 · SON LA
Station distance: 2.1 km from the place centre
Climate period: 1991–2020
Minimum month coverage: 17 usable years
Daylight: Calculated from latitude 21.33°, 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 SON LA is what differs

Thị Trấn Thuận Châu→Chiềng Cơi→Phổng Lăng→Xen Xe→Xen Hin→Xen Coc→

Or put two places side by side: Sơn La vs Thị Trấn Thuận Châu

Best time to visitSơn La.