Thị Trấn Thất Khê climate — normals and trends

Q: What is the climate of Thị Trấn Thất Khê?

Thị Trấn Thất Khê has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,667 mm of precipitation per year.

Q: What is the hottest day ever recorded in Thị Trấn Thất Khê?

The hottest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 30 July 1946, reaching 39.4 °C.

Q: What is the coldest day in Thị Trấn Thất Khê?

The coldest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 2 January 1974, at -0.4 °C.

Q: Does it snow in Thị Trấn Thất Khê?

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

Q: Has the climate of Thị Trấn Thất Khê warmed?

Yes: Thị Trấn Thất Khê warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Thị Trấn Thất Khê?

The wettest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 29 September 1948, with 175 mm of rain in 24 hours.

Q: What was the windiest day in Thị Trấn Thất Khê?

The windiest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 23 July 1980, with winds reaching 46.6 km/h.

Q: What is the warmest month in Thị Trấn Thất Khê?

The warmest month in Thị Trấn Thất Khê is July (27.1 °C on average); the coldest is January (13.6 °C).

Q: How much does it rain in Thị Trấn Thất Khê?

Thị Trấn Thất Khê receives on average 1,667 mm of precipitation per year, spread over about 187 rainy days.

Q: Is it sunny in Thị Trấn Thất Khê?

Thị Trấn Thất Khê gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.

Thị Trấn Thất Khê (Vietnam) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 21.4 °C and it receives 1,667 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 July (27.1 °C on average) and the coldest is January (13.6 °C). Rainfall peaks in August.

Thị Trấn Thất Khê averages 0 frost days, 95 hot days (≥ 30 °C) and 187 rainy days per year.

Thị Trấn Thất Khê has warmed by +1.3 °C between 1940 and 2025, or +0.15 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.4 °C (on 30 July 1946) and the coldest -0.4 °C (on 2 January 1974).

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 Thất KhêLạng Sơn Province

coords: 22.26°, 106.47°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthDecember

Mean daily temperature

21.4°C

Average daily high

25.3°C

Average daily low

18.4°C

Annual rainfall

1,667mm

Sunshine / day

6.7h

Mean relative humidity

82%

Average peak wind

11.8km/h

Seasonal range

13.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

95 d/yr

Rainy days (≥ 1 mm)

187 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.9 °C

Average feels-like low

20.3 °C

Average peak gust

29.5 km/h

Tropical nights (≥ 20 °C)

182 d/yr

Solar radiation

13.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.3 °C

since 1940

+0.2 °C per decade · r² = 0.42 · 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

39.4 °C

30 July 1946

Coldest day

-0.4 °C

2 January 1974

Wettest day

175 mm

29 September 1948

Windiest day

46.6 km/h

23 July 1980

Strongest gust

121.3 km/h

16 September 2014

Hottest feels-like

45.8 °C

26 July 2024

Coldest feels-like

-3.7 °C

2 January 1974

Snowiest day

0.8 cm

24 January 2016

Sunniest day

13.2 h

21 June 1961

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	35.7 °C30 July 2025	4.7 °C12 January 2025	22.2 °C	2,007 mm	123	0
2024	37.2 °C26 July 2024	5.3 °C24 January 2024	22.7 °C	1,922 mm	125	0
2023	38.0 °C22 May 2023	4.4 °C31 January 2023	22.7 °C	1,364 mm	124	0
2022	34.8 °C19 June 2022	5.2 °C23 February 2022	21.7 °C	1,708 mm	109	0
2021	36.8 °C20 June 2021	4.8 °C2 January 2021	22.4 °C	1,477 mm	138	0
2020	36.3 °C21 May 2020	7.2 °C17 December 2020	22.2 °C	1,569 mm	112	0
2019	36.6 °C19 May 2019	4.1 °C8 December 2019	22.3 °C	1,796 mm	124	0
2018	36.1 °C5 July 2018	4.5 °C6 February 2018	22.0 °C	1,759 mm	98	0
2017	38.6 °C5 June 2017	7.1 °C26 December 2017	22.1 °C	1,883 mm	97	0
2016	35.9 °C1 August 2016	2.8 °C24 January 2016	22.3 °C	1,480 mm	133	0
2015	36.2 °C29 May 2015	5.0 °C13 January 2015	22.5 °C	1,556 mm	121	0
2014	35.8 °C14 May 2014	1.0 °C23 January 2014	21.8 °C	1,663 mm	108	0
2013	36.3 °C16 May 2013	2.2 °C20 December 2013	21.6 °C	1,560 mm	101	0
2012	37.1 °C3 May 2012	5.6 °C5 January 2012	21.5 °C	1,579 mm	112	0
2011	35.2 °C31 August 2011	3.8 °C26 December 2011	20.6 °C	1,343 mm	105	0
2010	35.7 °C7 July 2010	5.1 °C17 December 2010	22.2 °C	1,565 mm	109	0
2009	34.8 °C20 June 2009	4.1 °C11 January 2009	22.3 °C	1,204 mm	133	0
2008	35.4 °C30 July 2008	3.5 °C3 January 2008	21.0 °C	1,637 mm	108	0
2007	35.6 °C24 May 2007	4.6 °C30 November 2007	21.8 °C	1,386 mm	106	0
2006	36.8 °C12 April 2006	4.4 °C23 December 2006	22.1 °C	1,523 mm	124	0
2005	35.6 °C17 May 2005	4.5 °C19 December 2005	21.5 °C	1,280 mm	120	0
2004	36.2 °C1 July 2004	2.9 °C9 February 2004	21.5 °C	1,200 mm	98	0
2003	36.8 °C7 May 2003	4.1 °C7 January 2003	22.4 °C	1,324 mm	120	0
2002	34.6 °C10 July 2002	4.9 °C26 December 2002	21.9 °C	1,549 mm	112	0
2001	35.3 °C6 July 2001	3.3 °C25 December 2001	21.6 °C	1,877 mm	95	0
2000	35.1 °C5 July 2000	4.9 °C2 February 2000	21.5 °C	1,378 mm	103	0
1999	35.4 °C6 June 1999	1.0 °C25 December 1999	21.7 °C	1,525 mm	107	0
1998	35.9 °C24 April 1998	5.6 °C20 January 1998	22.4 °C	1,211 mm	113	0
1997	34.9 °C9 June 1997	6.4 °C12 January 1997	21.6 °C	1,971 mm	82	0
1996	35.6 °C2 August 1996	3.7 °C21 February 1996	21.1 °C	1,758 mm	91	0
1995	35.0 °C20 May 1995	3.0 °C31 December 1995	21.3 °C	1,684 mm	89	0
1994	35.9 °C2 May 1994	6.3 °C25 January 1994	21.7 °C	2,075 mm	81	0
1993	34.9 °C4 April 1993	2.8 °C31 January 1993	21.4 °C	1,679 mm	110	0
1992	35.8 °C1 September 1992	5.2 °C2 December 1992	21.3 °C	1,312 mm	111	0
1991	34.7 °C25 May 1991	5.2 °C28 December 1991	21.9 °C	1,293 mm	118	0
1990	37.0 °C22 April 1990	5.7 °C2 February 1990	21.8 °C	1,840 mm	92	0
1989	34.9 °C17 July 1989	5.2 °C29 January 1989	21.2 °C	1,552 mm	108	0
1988	36.2 °C21 May 1988	4.4 °C20 February 1988	21.0 °C	1,456 mm	97	0
1987	35.8 °C2 May 1987	3.3 °C17 December 1987	22.3 °C	1,694 mm	120	0
1986	36.2 °C2 July 1986	2.4 °C11 January 1986	21.5 °C	1,974 mm	97	0
1985	35.2 °C23 June 1985	3.6 °C25 December 1985	20.9 °C	1,810 mm	113	0
1984	35.4 °C4 April 1984	2.9 °C9 January 1984	20.7 °C	1,654 mm	99	0
1983	37.4 °C15 April 1983	2.4 °C23 January 1983	21.0 °C	1,578 mm	116	0
1982	34.6 °C21 June 1982	0.2 °C27 December 1982	21.4 °C	1,710 mm	91	0
1981	35.5 °C25 August 1981	4.4 °C12 January 1981	21.5 °C	1,922 mm	104	0
1980	35.2 °C22 April 1980	4.4 °C7 February 1980	21.6 °C	1,778 mm	99	0
1979	35.3 °C29 July 1979	5.9 °C1 February 1979	21.5 °C	1,714 mm	90	0
1978	35.8 °C25 June 1978	3.9 °C21 January 1978	21.2 °C	2,266 mm	89	0
1977	35.0 °C9 June 1977	2.5 °C31 January 1977	21.1 °C	1,618 mm	92	0
1976	34.8 °C17 June 1976	4.0 °C12 January 1976	20.8 °C	1,688 mm	92	0
1975	34.2 °C30 July 1975	-0.1 °C31 December 1975	21.4 °C	2,063 mm	104	1
1974	34.9 °C8 May 1974	-0.4 °C2 January 1974	21.2 °C	1,764 mm	89	1
1973	37.6 °C8 April 1973	0.5 °C27 December 1973	21.9 °C	2,305 mm	105	0
1972	35.8 °C10 July 1972	4.4 °C16 January 1972	21.5 °C	2,014 mm	111	0
1971	35.7 °C22 July 1971	0.9 °C5 January 1971	21.0 °C	1,813 mm	78	0
1970	35.9 °C12 May 1970	4.0 °C31 January 1970	21.2 °C	1,686 mm	96	0
1969	36.8 °C13 May 1969	4.4 °C30 November 1969	21.5 °C	1,328 mm	118	0
1968	35.3 °C28 July 1968	2.0 °C14 February 1968	21.3 °C	1,948 mm	80	0
1967	35.5 °C1 August 1967	0.6 °C18 January 1967	21.0 °C	1,393 mm	101	0
1966	34.5 °C12 May 1966	2.9 °C1 January 1966	20.8 °C	1,844 mm	53	0
1965	33.9 °C21 July 1965	2.8 °C17 December 1965	20.8 °C	1,861 mm	53	0
1964	35.0 °C1 June 1964	3.3 °C19 December 1964	21.2 °C	1,743 mm	88	0
1963	34.7 °C5 September 1963	1.3 °C15 January 1963	21.4 °C	1,654 mm	97	0
1962	35.5 °C30 July 1962	3.2 °C4 January 1962	21.2 °C	1,648 mm	105	0
1961	35.4 °C2 July 1961	0.8 °C19 January 1961	21.6 °C	1,769 mm	96	0
1960	35.7 °C27 April 1960	2.2 °C2 January 1960	21.7 °C	1,860 mm	93	0
1959	34.5 °C30 August 1959	5.0 °C14 January 1959	21.2 °C	1,516 mm	87	0
1958	39.3 °C11 May 1958	3.9 °C1 February 1958	21.7 °C	1,640 mm	109	0
1957	36.3 °C16 August 1957	1.9 °C14 February 1957	21.7 °C	1,467 mm	107	0
1956	34.3 °C4 September 1956	1.5 °C10 January 1956	21.0 °C	1,368 mm	83	0
1955	34.2 °C16 April 1955	0.8 °C12 January 1955	21.0 °C	1,456 mm	51	0
1954	35.5 °C29 July 1954	3.1 °C16 December 1954	21.5 °C	1,390 mm	84	0
1953	34.6 °C13 August 1953	3.9 °C13 December 1953	21.3 °C	1,719 mm	83	0
1952	34.1 °C11 July 1952	3.5 °C19 February 1952	21.8 °C	1,896 mm	72	0
1951	34.0 °C10 April 1951	3.6 °C13 January 1951	20.9 °C	1,986 mm	55	0
1950	34.6 °C21 April 1950	5.5 °C14 February 1950	21.1 °C	1,912 mm	55	0
1949	36.2 °C7 June 1949	3.3 °C10 January 1949	21.6 °C	1,401 mm	75	0
1948	34.1 °C14 March 1948	3.2 °C4 January 1948	21.0 °C	2,015 mm	73	0
1947	33.4 °C18 July 1947	2.6 °C30 December 1947	20.6 °C	1,712 mm	43	0
1946	39.4 °C30 July 1946	2.8 °C11 January 1946	22.3 °C	828 mm	130	0
1945	32.4 °C21 June 1945	2.9 °C17 January 1945	19.6 °C	1,696 mm	41	0
1944	36.2 °C8 April 1944	0.6 °C21 December 1944	20.6 °C	1,898 mm	37	0
1943	33.4 °C29 May 1943	3.2 °C12 January 1943	20.4 °C	1,727 mm	47	0
1942	32.5 °C6 August 1942	4.3 °C8 December 1942	20.4 °C	2,158 mm	25	0
1941	33.2 °C26 April 1941	4.8 °C4 February 1941	20.6 °C	1,869 mm	36	0
1940	32.3 °C15 May 1940	2.1 °C25 January 1940	20.3 °C	1,663 mm	40	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

26.0 °C

+0.7 °C

Hot days (≥ 30 °C)

123 d/yr

+28

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2007 mm

+340 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	20.1 °C	+2.9 °C	11 mm	-27 mm
Feb	16.2 °C	-2.2 °C	38 mm	-3 mm
Mar	23.1 °C	+0.9 °C	29 mm	-34 mm
Apr	28.8 °C	+2.4 °C	79 mm	-27 mm
May	29.1 °C	-0.1 °C	285 mm	+65 mm
Jun	30.8 °C	+0.4 °C	320 mm	+37 mm
Jul	31.9 °C	+1.0 °C	319 mm	+53 mm
Aug	30.7 °C	+0.3 °C	302 mm	+19 mm
Sep	30.6 °C	+1.3 °C	278 mm	+94 mm
Oct	27.5 °C	+0.9 °C	233 mm	+132 mm
Nov	22.1 °C	-0.9 °C	68 mm	+14 mm
Dec	20.9 °C	+1.8 °C	47 mm	+15 mm

The year's extremes

Hottest day

35.7 °C

30 Jul 2025

Coldest day

4.7 °C

12 Jan 2025

Wettest day

120.4 mm

6 Oct 2025

Windiest day

27.0 km/h

12 Apr 2025

Strongest gust

65.9 km/h

6 Oct 2025

Hottest feels-like

44.6 °C

30 Jul 2025

Coldest feels-like

1.9 °C

12 Jan 2025

Sunniest day

12.6 h

12 May 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 Thất Khê?

Thị Trấn Thất Khê has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 21.4 °C and it receives 1,667 mm of precipitation per year.

What is the hottest day ever recorded in Thị Trấn Thất Khê?

The hottest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 30 July 1946, reaching 39.4 °C.

What is the coldest day in Thị Trấn Thất Khê?

The coldest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 2 January 1974, at -0.4 °C.

Does it snow in Thị Trấn Thất Khê?

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

Has the climate of Thị Trấn Thất Khê warmed?

Yes: Thị Trấn Thất Khê warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Thị Trấn Thất Khê?

The wettest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 29 September 1948, with 175 mm of rain in 24 hours.

What was the windiest day in Thị Trấn Thất Khê?

The windiest day measured in Thị Trấn Thất Khê between 1940 and 2025 was 23 July 1980, with winds reaching 46.6 km/h.

What is the warmest month in Thị Trấn Thất Khê?

The warmest month in Thị Trấn Thất Khê is July (27.1 °C on average); the coldest is January (13.6 °C).

How much does it rain in Thị Trấn Thất Khê?

Thị Trấn Thất Khê receives on average 1,667 mm of precipitation per year, spread over about 187 rainy days.

Is it sunny in Thị Trấn Thất Khê?

Thị Trấn Thất Khê gets on average 6.7 hours of sunshine per day, roughly 2,446 hours per year over 1940-2025.

What is the biggest single-day snowfall in Thị Trấn Thất Khê?

The heaviest 24-hour snowfall measured in Thị Trấn Thất Khê between 1940 and 2025 was 24 January 2016, with 0.8 cm.

Are there tropical nights in Thị Trấn Thất Khê?

Yes: Thị Trấn Thất Khê has on average 182 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Thị Trấn Thất Khê?

In Thị Trấn Thất Khê, between 1940 and 2025, the highest apparent temperature reached 45.8 °C on 26 July 2024, and the lowest was -3.7 °C on 2 January 1974.

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