Thị Trấn Thuận Châu climate — normals and trends

Q: What is the climate of Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 1,988 mm of precipitation per year.

Q: What is the hottest day ever recorded in Thị Trấn Thuận Châu?

The hottest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 19 May 2019, reaching 39.6 °C.

Q: What is the coldest day in Thị Trấn Thuận Châu?

The coldest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 31 December 1975, at -0.8 °C.

Q: Does it snow in Thị Trấn Thuận Châu?

Almost never: Thị Trấn Thuận Châu sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Thị Trấn Thuận Châu warmed?

Yes: Thị Trấn Thuận Châu warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Thị Trấn Thuận Châu?

The wettest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 16 August 1996, with 286 mm of rain in 24 hours.

Q: What was the windiest day in Thị Trấn Thuận Châu?

The windiest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 9 July 1956, with winds reaching 21.1 km/h.

Q: What is the warmest month in Thị Trấn Thuận Châu?

The warmest month in Thị Trấn Thuận Châu is June (25.4 °C on average); the coldest is January (15.8 °C).

Q: How much does it rain in Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu receives on average 1,988 mm of precipitation per year, spread over about 198 rainy days.

Q: Is it sunny in Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.

Thị Trấn Thuận Châu (Vietnam) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 21.8 °C and it receives 1,988 mm of precipitation per year.

These figures are normals computed over 86 complete calendar years, from 1940 to 2025, using ERA5 reanalysis data from the Copernicus programme.

The warmest month is June (25.4 °C on average) and the coldest is January (15.8 °C). Rainfall peaks in July.

Thị Trấn Thuận Châu averages 0 frost days, 84 hot days (≥ 30 °C) and 198 rainy days per year.

Thị Trấn Thuận Châu has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.6 °C (on 19 May 2019) and the coldest -0.8 °C (on 31 December 1975).

Data from ERA5 reanalysis (Copernicus Climate Change Service), redistributed under a CC-BY 4.0 licence. Normals are recomputed whenever the archive is updated.

Climate normals · ERA5

Thị Trấn Thuận ChâuSơn La Province

coords: 21.44°, 103.69°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJuneColdest monthJanuaryWettest monthJulyDriest monthDecember

Mean daily temperature

21.8°C

Average daily high

26.5°C

Average daily low

18.1°C

Annual rainfall

1,988mm

Sunshine / day

8.3h

Mean relative humidity

82%

Average peak wind

6.5km/h

Seasonal range

9.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

84 d/yr

Rainy days (≥ 1 mm)

198 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.9 °C

Average feels-like low

20.3 °C

Average peak gust

24.6 km/h

Tropical nights (≥ 20 °C)

171 d/yr

Solar radiation

15.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.67 · p = < 0.001

19402025

Trend fitted by linear regression (ordinary least squares) on annual means. A trend is shown only when it is statistically significant (p < 0.05).

A climograph overlays rainfall (bars) and temperature (line): the standard reading in climatology, where you can see at a glance whether the warm season is also the dry one.

Records for the period

Hottest day

39.6 °C

19 May 2019

Coldest day

-0.8 °C

31 December 1975

Wettest day

286 mm

16 August 1996

Windiest day

21.1 km/h

9 July 1956

Strongest gust

70.6 km/h

9 July 1956

Hottest feels-like

43.6 °C

1 June 2023

Coldest feels-like

-3.7 °C

31 December 1975

Sunniest day

13.1 h

14 June 2013

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	36.5 °C9 May 2025	6.1 °C29 November 2025	22.5 °C	2,019 mm	117	0
2024	38.4 °C28 April 2024	8.5 °C25 January 2024	23.4 °C	2,265 mm	153	0
2023	38.1 °C22 May 2023	6.5 °C30 January 2023	23.2 °C	1,468 mm	138	0
2022	34.9 °C25 July 2022	6.8 °C19 December 2022	22.4 °C	1,923 mm	99	0
2021	36.0 °C22 May 2021	6.4 °C2 January 2021	22.5 °C	1,455 mm	138	0
2020	36.8 °C21 May 2020	8.8 °C22 December 2020	22.6 °C	1,593 mm	119	0
2019	39.6 °C19 May 2019	4.5 °C8 December 2019	23.6 °C	1,472 mm	171	0
2018	34.3 °C13 April 2018	8.0 °C30 January 2018	22.6 °C	2,329 mm	113	0
2017	35.3 °C4 June 2017	6.4 °C22 December 2017	22.5 °C	2,055 mm	108	0
2016	34.9 °C12 April 2016	4.4 °C25 January 2016	22.9 °C	1,613 mm	146	0
2015	37.8 °C6 May 2015	7.0 °C15 January 2015	23.1 °C	1,824 mm	146	0
2014	36.3 °C24 May 2014	3.6 °C23 January 2014	22.6 °C	1,825 mm	125	0
2013	34.7 °C16 May 2013	5.2 °C20 December 2013	22.2 °C	2,047 mm	110	0
2012	36.9 °C3 May 2012	8.3 °C27 January 2012	22.6 °C	1,720 mm	116	0
2011	33.4 °C27 July 2011	6.8 °C27 December 2011	21.4 °C	1,450 mm	82	0
2010	36.4 °C11 April 2010	8.6 °C19 February 2010	22.9 °C	1,725 mm	138	0
2009	34.6 °C11 May 2009	6.5 °C11 January 2009	22.7 °C	1,352 mm	136	0
2008	34.1 °C8 April 2008	5.8 °C1 December 2008	21.5 °C	2,370 mm	81	0
2007	37.0 °C2 April 2007	5.7 °C29 January 2007	22.3 °C	1,793 mm	102	0
2006	35.9 °C11 April 2006	4.7 °C23 December 2006	22.6 °C	1,589 mm	103	0
2005	34.9 °C1 May 2005	5.6 °C20 December 2005	22.2 °C	1,901 mm	112	0
2004	34.2 °C1 July 2004	5.5 °C9 February 2004	21.9 °C	1,910 mm	83	0
2003	36.4 °C8 May 2003	7.5 °C22 December 2003	22.6 °C	1,528 mm	118	0
2002	34.1 °C15 March 2002	8.5 °C5 January 2002	22.3 °C	2,283 mm	102	0
2001	33.7 °C21 April 2001	6.6 °C24 December 2001	22.2 °C	1,877 mm	70	0
2000	33.8 °C25 April 2000	6.4 °C2 February 2000	22.1 °C	1,734 mm	77	0
1999	33.3 °C20 March 1999	1.9 °C27 December 1999	22.1 °C	1,837 mm	79	0
1998	34.4 °C18 March 1998	8.6 °C16 December 1998	22.8 °C	1,756 mm	114	0
1997	34.9 °C4 June 1997	9.6 °C12 January 1997	22.1 °C	2,393 mm	68	0
1996	34.0 °C20 March 1996	2.6 °C1 January 1996	21.6 °C	2,556 mm	62	0
1995	34.5 °C25 May 1995	5.2 °C31 December 1995	21.7 °C	2,278 mm	80	0
1994	34.8 °C2 May 1994	8.5 °C1 January 1994	22.0 °C	2,814 mm	71	0
1993	33.8 °C1 April 1993	3.3 °C29 December 1993	21.6 °C	2,038 mm	66	0
1992	35.6 °C8 May 1992	7.2 °C21 January 1992	21.6 °C	2,119 mm	112	0
1991	34.8 °C10 April 1991	8.2 °C30 December 1991	22.4 °C	2,221 mm	98	0
1990	34.7 °C22 April 1990	7.1 °C7 December 1990	21.7 °C	2,182 mm	75	0
1989	35.2 °C21 April 1989	6.2 °C9 January 1989	21.5 °C	1,991 mm	76	0
1988	34.9 °C21 March 1988	7.8 °C18 December 1988	21.9 °C	1,760 mm	83	0
1987	35.8 °C21 May 1987	4.8 °C24 December 1987	22.2 °C	2,003 mm	114	0
1986	34.0 °C2 July 1986	3.6 °C11 January 1986	21.6 °C	2,078 mm	76	0
1985	35.8 °C7 May 1985	3.3 °C25 December 1985	21.2 °C	2,269 mm	58	0
1984	35.4 °C19 March 1984	5.4 °C11 January 1984	21.5 °C	2,005 mm	76	0
1983	36.1 °C24 May 1983	4.2 °C2 December 1983	21.4 °C	2,196 mm	99	0
1982	34.6 °C12 May 1982	2.7 °C29 December 1982	21.7 °C	2,400 mm	78	0
1981	33.1 °C7 April 1981	6.5 °C12 January 1981	21.8 °C	3,073 mm	80	0
1980	36.0 °C3 May 1980	6.8 °C9 February 1980	22.0 °C	2,124 mm	91	0
1979	34.6 °C13 May 1979	8.2 °C26 December 1979	21.7 °C	2,018 mm	86	0
1978	33.4 °C13 June 1978	6.2 °C17 December 1978	21.4 °C	2,745 mm	64	0
1977	34.4 °C9 June 1977	6.9 °C1 February 1977	21.1 °C	2,197 mm	79	0
1976	32.4 °C23 July 1976	1.6 °C1 January 1976	20.9 °C	2,108 mm	60	0
1975	35.5 °C28 April 1975	-0.8 °C31 December 1975	21.2 °C	2,153 mm	69	1
1974	34.1 °C8 May 1974	1.1 °C2 January 1974	21.3 °C	2,291 mm	69	0
1973	37.6 °C8 April 1973	3.8 °C31 December 1973	22.0 °C	2,296 mm	104	0
1972	35.1 °C11 May 1972	6.1 °C22 January 1972	21.6 °C	2,454 mm	91	0
1971	34.2 °C31 March 1971	2.0 °C10 January 1971	20.9 °C	2,337 mm	53	0
1970	35.5 °C12 May 1970	6.7 °C31 January 1970	21.5 °C	2,135 mm	77	0
1969	36.5 °C14 May 1969	6.1 °C30 November 1969	21.8 °C	1,930 mm	112	0
1968	33.4 °C18 May 1968	5.8 °C19 January 1968	21.5 °C	2,286 mm	66	0
1967	35.5 °C30 March 1967	3.1 °C17 January 1967	21.3 °C	1,765 mm	95	0
1966	34.5 °C29 April 1966	5.5 °C1 January 1966	21.4 °C	2,173 mm	47	0
1965	34.7 °C3 April 1965	5.5 °C17 January 1965	20.9 °C	1,995 mm	40	0
1964	32.8 °C19 May 1964	4.0 °C21 December 1964	21.2 °C	2,398 mm	63	0
1963	34.2 °C21 April 1963	4.3 °C16 January 1963	21.4 °C	2,219 mm	88	0
1962	35.0 °C21 March 1962	5.0 °C4 January 1962	21.5 °C	1,615 mm	89	0
1961	34.4 °C16 May 1961	2.4 °C19 January 1961	21.8 °C	2,180 mm	71	0
1960	38.3 °C27 April 1960	5.6 °C3 January 1960	22.0 °C	2,145 mm	94	0
1959	36.9 °C10 April 1959	6.2 °C14 January 1959	21.7 °C	1,735 mm	75	0
1958	38.0 °C25 April 1958	5.6 °C14 December 1958	21.8 °C	2,119 mm	97	0
1957	38.2 °C14 May 1957	5.4 °C13 February 1957	21.9 °C	1,875 mm	103	0
1956	35.6 °C19 April 1956	4.1 °C10 January 1956	21.2 °C	1,933 mm	66	0
1955	35.0 °C17 April 1955	1.9 °C12 January 1955	21.0 °C	1,791 mm	58	0
1954	36.5 °C17 April 1954	3.7 °C17 December 1954	21.5 °C	1,434 mm	65	0
1953	33.5 °C22 July 1953	6.9 °C14 December 1953	21.5 °C	1,323 mm	79	0
1952	34.6 °C3 May 1952	5.8 °C9 January 1952	21.6 °C	1,987 mm	53	0
1951	34.6 °C10 April 1951	8.5 °C16 January 1951	21.0 °C	2,196 mm	27	0
1950	35.3 °C21 April 1950	6.5 °C7 January 1950	21.2 °C	2,271 mm	42	0
1949	35.5 °C7 June 1949	5.1 °C17 January 1949	21.6 °C	1,437 mm	54	0
1948	35.4 °C14 March 1948	3.0 °C4 January 1948	21.0 °C	1,729 mm	33	0
1947	34.3 °C7 May 1947	4.3 °C21 December 1947	20.9 °C	1,645 mm	25	0
1946	35.3 °C18 March 1946	4.2 °C13 January 1946	21.3 °C	1,167 mm	72	0
1945	32.0 °C21 May 1945	5.1 °C18 January 1945	20.3 °C	1,733 mm	20	0
1944	34.0 °C9 April 1944	2.5 °C21 December 1944	20.8 °C	2,081 mm	24	0
1943	35.2 °C24 March 1943	6.0 °C22 November 1943	20.7 °C	1,917 mm	40	0
1942	36.0 °C17 April 1942	5.8 °C7 December 1942	20.7 °C	2,168 mm	25	0
1941	34.1 °C23 March 1941	6.1 °C4 February 1941	21.0 °C	2,015 mm	33	0
1940	31.1 °C26 April 1940	5.1 °C26 January 1940	20.6 °C	1,722 mm	14	0

Normals computed over complete calendar years 1940–2025.

A specific year

Pick a year and see how it compares to normal — warmer, drier or more extreme than usual?

Year

Across the whole year

Average daily high

27.1 °C

+0.6 °C

Hot days (≥ 30 °C)

117 d/yr

+33

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2019 mm

+31 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.9 °C	+0.8 °C	10 mm	-28 mm
Feb	23.0 °C	-0.2 °C	43 mm	-1 mm
Mar	27.0 °C	+0.3 °C	33 mm	-44 mm
Apr	29.8 °C	+0.8 °C	54 mm	-67 mm
May	30.5 °C	+0.6 °C	198 mm	-19 mm
Jun	29.9 °C	+0.7 °C	359 mm	-15 mm
Jul	29.6 °C	+0.6 °C	572 mm	+184 mm
Aug	29.7 °C	+0.9 °C	329 mm	-40 mm
Sep	30.0 °C	+1.4 °C	184 mm	-22 mm
Oct	28.0 °C	+1.0 °C	148 mm	+66 mm
Nov	23.4 °C	-1.0 °C	67 mm	+26 mm
Dec	22.7 °C	+1.3 °C	23 mm	-8 mm

The year's extremes

Hottest day

36.5 °C

9 May 2025

Coldest day

6.1 °C

29 Nov 2025

Wettest day

92.4 mm

7 Oct 2025

Windiest day

13.8 km/h

29 Mar 2025

Strongest gust

47.5 km/h

29 Sep 2025

Hottest feels-like

41.4 °C

14 Jun 2025

Coldest feels-like

4.3 °C

14 Jan 2025

Sunniest day

12.6 h

13 Jun 2025

What was the weather like that day?

Your birthday, a wedding, a memorable trip: discover the actual weather for any date since 1940.

Date

Frequently asked questions

What is the climate of Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 21.8 °C and it receives 1,988 mm of precipitation per year.

What is the hottest day ever recorded in Thị Trấn Thuận Châu?

The hottest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 19 May 2019, reaching 39.6 °C.

What is the coldest day in Thị Trấn Thuận Châu?

The coldest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 31 December 1975, at -0.8 °C.

Does it snow in Thị Trấn Thuận Châu?

Almost never: Thị Trấn Thuận Châu sees virtually no snow, with about 0 frost days per year.

Has the climate of Thị Trấn Thuận Châu warmed?

Yes: Thị Trấn Thuận Châu warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Thị Trấn Thuận Châu?

The wettest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 16 August 1996, with 286 mm of rain in 24 hours.

What was the windiest day in Thị Trấn Thuận Châu?

The windiest day measured in Thị Trấn Thuận Châu between 1940 and 2025 was 9 July 1956, with winds reaching 21.1 km/h.

What is the warmest month in Thị Trấn Thuận Châu?

The warmest month in Thị Trấn Thuận Châu is June (25.4 °C on average); the coldest is January (15.8 °C).

How much does it rain in Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu receives on average 1,988 mm of precipitation per year, spread over about 198 rainy days.

Is it sunny in Thị Trấn Thuận Châu?

Thị Trấn Thuận Châu gets on average 8.3 hours of sunshine per day, roughly 3,030 hours per year over 1940-2025.

Are there tropical nights in Thị Trấn Thuận Châu?

Yes: Thị Trấn Thuận Châu has on average 171 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Thị Trấn Thuận Châu?

In Thị Trấn Thuận Châu, between 1940 and 2025, the highest apparent temperature reached 43.6 °C on 1 June 2023, and the lowest was -3.7 °C on 31 December 1975.

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