Thị Trấn Ba Chẽ climate — normals and trends

Q: What is the climate of Thị Trấn Ba Chẽ?

Thị Trấn Ba Chẽ has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 1,884 mm of precipitation per year.

Q: What is the hottest day ever recorded in Thị Trấn Ba Chẽ?

The hottest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 3 May 1994, reaching 38.8 °C.

Q: What is the coldest day in Thị Trấn Ba Chẽ?

The coldest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 24 January 2016, at 2.5 °C.

Q: Does it snow in Thị Trấn Ba Chẽ?

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

Q: Has the climate of Thị Trấn Ba Chẽ warmed?

Yes: Thị Trấn Ba Chẽ warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Thị Trấn Ba Chẽ?

The wettest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 13 September 1946, with 189 mm of rain in 24 hours.

Q: What was the windiest day in Thị Trấn Ba Chẽ?

The windiest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 23 July 1980, with winds reaching 49.7 km/h.

Q: What is the warmest month in Thị Trấn Ba Chẽ?

The warmest month in Thị Trấn Ba Chẽ is July (27.6 °C on average); the coldest is January (15.3 °C).

Q: How much does it rain in Thị Trấn Ba Chẽ?

Thị Trấn Ba Chẽ receives on average 1,884 mm of precipitation per year, spread over about 183 rainy days.

Q: Is it sunny in Thị Trấn Ba Chẽ?

Thị Trấn Ba Chẽ gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.

Thị Trấn Ba Chẽ (Vietnam) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 22.4 °C and it receives 1,884 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 (27.6 °C on average) and the coldest is January (15.3 °C). Rainfall peaks in August.

Thị Trấn Ba Chẽ averages 0 frost days, 90 hot days (≥ 30 °C) and 183 rainy days per year.

Thị Trấn Ba Chẽ has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.8 °C (on 3 May 1994) and the coldest 2.5 °C (on 24 January 2016).

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 Ba ChẽQuảng Ninh

coords: 21.27°, 107.28°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthFebruary

Mean daily temperature

22.4°C

Average daily high

25.7°C

Average daily low

20.0°C

Annual rainfall

1,884mm

Sunshine / day

7.5h

Mean relative humidity

84%

Average peak wind

12.0km/h

Seasonal range

12.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

90 d/yr

Rainy days (≥ 1 mm)

183 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.1 °C

Average feels-like low

22.4 °C

Average peak gust

32.8 km/h

Tropical nights (≥ 20 °C)

208 d/yr

Solar radiation

14.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.1 °C

since 1940

+0.1 °C per decade · r² = 0.43 · 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

38.8 °C

3 May 1994

Coldest day

2.5 °C

24 January 2016

Wettest day

189 mm

13 September 1946

Windiest day

49.7 km/h

23 July 1980

Strongest gust

135.4 km/h

7 September 2024

Hottest feels-like

46.0 °C

30 July 2025

Coldest feels-like

-2.6 °C

24 January 2016

Sunniest day

13.0 h

14 June 1981

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	37.6 °C2 June 2025	7.7 °C13 January 2025	23.1 °C	2,137 mm	109
2024	37.5 °C30 April 2024	6.5 °C23 January 2024	23.7 °C	1,996 mm	130
2023	36.3 °C17 May 2023	7.3 °C30 January 2023	23.5 °C	1,508 mm	118
2022	35.2 °C24 August 2022	5.8 °C20 February 2022	22.9 °C	1,986 mm	117
2021	37.4 °C20 June 2021	7.1 °C9 January 2021	23.4 °C	1,623 mm	130
2020	37.4 °C21 May 2020	9.3 °C18 December 2020	23.5 °C	1,751 mm	114
2019	36.4 °C29 June 2019	8.2 °C1 January 2019	23.8 °C	1,741 mm	122
2018	36.8 °C5 July 2018	6.6 °C30 December 2018	23.1 °C	2,047 mm	101
2017	37.9 °C3 June 2017	9.4 °C18 December 2017	23.0 °C	2,258 mm	96
2016	36.8 °C3 June 2016	2.5 °C24 January 2016	23.0 °C	1,943 mm	119
2015	37.2 °C3 July 2015	8.1 °C13 January 2015	23.5 °C	1,849 mm	129
2014	35.3 °C20 June 2014	6.0 °C23 January 2014	22.7 °C	2,017 mm	117
2013	37.1 °C16 May 2013	5.4 °C20 December 2013	22.5 °C	2,034 mm	98
2012	37.5 °C25 April 2012	7.4 °C5 January 2012	22.6 °C	2,029 mm	121
2011	36.1 °C1 September 2011	5.6 °C12 January 2011	21.7 °C	1,631 mm	104
2010	36.6 °C22 May 2010	7.1 °C16 December 2010	23.0 °C	1,838 mm	98
2009	35.7 °C19 April 2009	6.7 °C11 January 2009	22.9 °C	1,764 mm	117
2008	35.1 °C23 September 2008	5.2 °C1 February 2008	22.0 °C	1,913 mm	92
2007	37.0 °C9 June 2007	8.2 °C29 January 2007	22.7 °C	1,416 mm	112
2006	35.3 °C6 June 2006	8.7 °C20 December 2006	22.9 °C	1,430 mm	111
2005	35.3 °C19 July 2005	6.9 °C13 January 2005	22.4 °C	1,717 mm	114
2004	34.9 °C23 June 2004	6.0 °C9 February 2004	22.3 °C	1,217 mm	94
2003	35.3 °C6 May 2003	5.2 °C7 January 2003	23.2 °C	1,800 mm	114
2002	36.0 °C21 May 2002	4.6 °C27 December 2002	22.8 °C	1,944 mm	96
2001	36.0 °C6 July 2001	5.7 °C24 December 2001	22.5 °C	2,024 mm	91
2000	34.1 °C18 July 2000	7.5 °C1 February 2000	22.7 °C	1,497 mm	104
1999	35.9 °C6 June 1999	3.6 °C24 December 1999	22.6 °C	1,517 mm	107
1998	36.0 °C22 May 1998	8.6 °C5 February 1998	23.4 °C	1,446 mm	118
1997	35.9 °C9 June 1997	8.1 °C12 January 1997	22.6 °C	1,971 mm	69
1996	36.1 °C2 August 1996	3.9 °C21 February 1996	22.2 °C	1,925 mm	90
1995	34.7 °C22 June 1995	6.4 °C31 December 1995	22.3 °C	1,850 mm	88
1994	38.8 °C3 May 1994	8.2 °C21 January 1994	22.6 °C	2,067 mm	75
1993	37.0 °C4 June 1993	5.3 °C30 January 1993	22.5 °C	1,537 mm	101
1992	36.1 °C30 August 1992	7.5 °C15 January 1992	22.1 °C	1,753 mm	83
1991	35.1 °C7 September 1991	3.4 °C28 December 1991	23.0 °C	1,411 mm	101
1990	36.5 °C22 April 1990	6.9 °C1 February 1990	22.7 °C	1,917 mm	91
1989	35.2 °C18 June 1989	6.1 °C13 January 1989	22.3 °C	1,641 mm	94
1988	35.6 °C21 May 1988	7.1 °C19 February 1988	22.2 °C	1,599 mm	92
1987	36.3 °C25 June 1987	6.5 °C8 December 1987	23.1 °C	2,064 mm	95
1986	35.6 °C2 July 1986	4.8 °C1 March 1986	22.4 °C	2,071 mm	95
1985	34.6 °C26 June 1985	7.7 °C17 December 1985	22.0 °C	1,804 mm	100
1984	34.3 °C30 August 1984	5.4 °C9 January 1984	22.0 °C	1,705 mm	81
1983	35.5 °C18 June 1983	5.1 °C21 January 1983	22.1 °C	1,861 mm	112
1982	34.7 °C28 July 1982	4.2 °C27 December 1982	22.4 °C	2,126 mm	87
1981	35.7 °C25 August 1981	6.9 °C14 January 1981	22.7 °C	2,506 mm	96
1980	35.0 °C8 March 1980	6.7 °C8 February 1980	22.6 °C	2,048 mm	95
1979	36.3 °C29 July 1979	7.5 °C31 January 1979	22.6 °C	1,985 mm	104
1978	35.3 °C25 June 1978	7.2 °C18 January 1978	22.3 °C	2,706 mm	86
1977	36.3 °C31 May 1977	3.8 °C30 January 1977	22.2 °C	1,720 mm	104
1976	34.7 °C27 May 1976	5.9 °C28 December 1976	21.8 °C	1,572 mm	87
1975	34.6 °C30 July 1975	3.2 °C14 December 1975	22.3 °C	2,139 mm	109
1974	34.5 °C11 July 1974	3.2 °C2 January 1974	22.3 °C	1,846 mm	101
1973	36.3 °C20 July 1973	4.9 °C27 December 1973	22.9 °C	2,947 mm	91
1972	35.9 °C10 July 1972	6.0 °C8 February 1972	22.3 °C	2,270 mm	93
1971	34.8 °C21 July 1971	5.0 °C10 January 1971	21.9 °C	1,963 mm	68
1970	34.2 °C12 May 1970	8.0 °C31 January 1970	22.2 °C	1,729 mm	102
1969	34.8 °C28 July 1969	7.0 °C31 January 1969	22.4 °C	1,352 mm	102
1968	36.4 °C29 August 1968	5.0 °C14 February 1968	22.4 °C	2,187 mm	91
1967	36.1 °C23 May 1967	3.3 °C17 January 1967	21.9 °C	1,662 mm	91
1966	33.7 °C11 May 1966	6.3 °C27 December 1966	22.3 °C	2,231 mm	53
1965	33.5 °C20 July 1965	3.5 °C17 December 1965	22.0 °C	1,849 mm	49
1964	35.3 °C8 August 1964	5.7 °C25 February 1964	22.3 °C	1,752 mm	91
1963	34.9 °C6 September 1963	4.0 °C16 January 1963	22.1 °C	2,230 mm	79
1962	34.2 °C23 July 1962	6.8 °C27 January 1962	22.1 °C	1,829 mm	99
1961	35.6 °C1 June 1961	4.8 °C18 January 1961	22.6 °C	1,823 mm	94
1960	35.2 °C14 June 1960	5.1 °C25 January 1960	22.5 °C	2,043 mm	86
1959	34.8 °C12 June 1959	7.2 °C10 January 1959	22.2 °C	1,957 mm	81
1958	35.7 °C2 June 1958	4.4 °C1 February 1958	22.4 °C	1,842 mm	89
1957	36.6 °C14 May 1957	5.1 °C7 February 1957	22.4 °C	1,698 mm	105
1956	33.3 °C4 September 1956	5.6 °C9 January 1956	22.0 °C	1,629 mm	72
1955	32.5 °C14 July 1955	3.6 °C12 January 1955	22.1 °C	1,695 mm	49
1954	34.8 °C18 June 1954	7.4 °C16 December 1954	22.5 °C	1,401 mm	64
1953	33.9 °C26 June 1953	7.4 °C13 December 1953	22.5 °C	1,815 mm	75
1952	34.9 °C11 July 1952	5.0 °C19 February 1952	22.7 °C	2,400 mm	64
1951	33.8 °C10 April 1951	4.0 °C13 January 1951	22.3 °C	2,313 mm	51
1950	33.0 °C22 July 1950	8.9 °C15 February 1950	22.4 °C	2,335 mm	56
1949	36.6 °C9 June 1949	6.4 °C8 January 1949	22.7 °C	1,383 mm	79
1948	34.3 °C17 June 1948	5.9 °C26 January 1948	22.2 °C	1,864 mm	62
1947	33.9 °C13 June 1947	5.5 °C20 December 1947	21.8 °C	1,675 mm	42
1946	37.0 °C28 July 1946	6.1 °C8 January 1946	22.8 °C	1,253 mm	99
1945	32.2 °C31 July 1945	4.8 °C4 February 1945	21.1 °C	2,551 mm	34
1944	35.6 °C7 April 1944	4.4 °C21 December 1944	21.8 °C	2,130 mm	46
1943	34.9 °C28 May 1943	6.5 °C13 January 1943	21.6 °C	1,767 mm	45
1942	32.5 °C6 August 1942	7.2 °C13 February 1942	21.8 °C	2,441 mm	27
1941	31.7 °C26 May 1941	8.4 °C1 February 1941	21.9 °C	2,049 mm	34
1940	33.2 °C1 July 1940	6.1 °C23 January 1940	21.6 °C	2,059 mm	41

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

26.4 °C

+0.7 °C

Hot days (≥ 30 °C)

109 d/yr

+19

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2137 mm

+253 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	20.2 °C	+1.7 °C	13 mm	-20 mm
Feb	18.2 °C	-1.1 °C	16 mm	-13 mm
Mar	22.6 °C	+0.3 °C	16 mm	-33 mm
Apr	26.7 °C	+0.8 °C	65 mm	-18 mm
May	29.2 °C	+0.1 °C	192 mm	-18 mm
Jun	31.4 °C	+0.8 °C	356 mm	+45 mm
Jul	31.7 °C	+0.9 °C	432 mm	+112 mm
Aug	30.5 °C	+0.1 °C	426 mm	+47 mm
Sep	30.7 °C	+1.0 °C	337 mm	+77 mm
Oct	28.3 °C	+0.8 °C	216 mm	+88 mm
Nov	24.0 °C	-0.3 °C	31 mm	-20 mm
Dec	22.7 °C	+2.3 °C	37 mm	+7 mm

The year's extremes

Hottest day

37.6 °C

2 Jun 2025

Coldest day

7.7 °C

13 Jan 2025

Wettest day

98.8 mm

6 Oct 2025

Windiest day

36.1 km/h

21 Jul 2025

Strongest gust

81.0 km/h

21 Jul 2025

Hottest feels-like

46.0 °C

30 Jul 2025

Coldest feels-like

5.6 °C

13 Jan 2025

Sunniest day

12.7 h

1 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 Ba Chẽ?

Thị Trấn Ba Chẽ has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 1,884 mm of precipitation per year.

What is the hottest day ever recorded in Thị Trấn Ba Chẽ?

The hottest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 3 May 1994, reaching 38.8 °C.

What is the coldest day in Thị Trấn Ba Chẽ?

The coldest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 24 January 2016, at 2.5 °C.

Does it snow in Thị Trấn Ba Chẽ?

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

Has the climate of Thị Trấn Ba Chẽ warmed?

Yes: Thị Trấn Ba Chẽ warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Thị Trấn Ba Chẽ?

The wettest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 13 September 1946, with 189 mm of rain in 24 hours.

What was the windiest day in Thị Trấn Ba Chẽ?

The windiest day measured in Thị Trấn Ba Chẽ between 1940 and 2025 was 23 July 1980, with winds reaching 49.7 km/h.

What is the warmest month in Thị Trấn Ba Chẽ?

The warmest month in Thị Trấn Ba Chẽ is July (27.6 °C on average); the coldest is January (15.3 °C).

How much does it rain in Thị Trấn Ba Chẽ?

Thị Trấn Ba Chẽ receives on average 1,884 mm of precipitation per year, spread over about 183 rainy days.

Is it sunny in Thị Trấn Ba Chẽ?

Thị Trấn Ba Chẽ gets on average 7.5 hours of sunshine per day, roughly 2,738 hours per year over 1940-2025.

Are there tropical nights in Thị Trấn Ba Chẽ?

Yes: Thị Trấn Ba Chẽ has on average 208 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Thị Trấn Ba Chẽ?

In Thị Trấn Ba Chẽ, between 1940 and 2025, the highest apparent temperature reached 46.0 °C on 30 July 2025, and the lowest was -2.6 °C on 24 January 2016.

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