Thị Trấn Nước Hai climate — normals and trends

Q: What is the climate of Thị Trấn Nước Hai?

Thị Trấn Nước Hai has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.0 °C and it receives 1,920 mm of precipitation per year.

Q: What is the hottest day ever recorded in Thị Trấn Nước Hai?

The hottest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 2 June 1958, reaching 37.0 °C.

Q: What is the coldest day in Thị Trấn Nước Hai?

The coldest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 12 January 1955, at -0.6 °C.

Q: Does it snow in Thị Trấn Nước Hai?

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

Q: Has the climate of Thị Trấn Nước Hai warmed?

Yes: Thị Trấn Nước Hai warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Thị Trấn Nước Hai?

The wettest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 17 July 2006, with 199 mm of rain in 24 hours.

Q: What was the windiest day in Thị Trấn Nước Hai?

The windiest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 30 August 1954, with winds reaching 46.8 km/h.

Q: What is the warmest month in Thị Trấn Nước Hai?

The warmest month in Thị Trấn Nước Hai is July (25.5 °C on average); the coldest is January (12.3 °C).

Q: How much does it rain in Thị Trấn Nước Hai?

Thị Trấn Nước Hai receives on average 1,920 mm of precipitation per year, spread over about 220 rainy days.

Q: Is it sunny in Thị Trấn Nước Hai?

Thị Trấn Nước Hai gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.

Thị Trấn Nước Hai (Vietnam) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 20.0 °C and it receives 1,920 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 (25.5 °C on average) and the coldest is January (12.3 °C). Rainfall peaks in June.

Thị Trấn Nước Hai averages 0 frost days, 52 hot days (≥ 30 °C) and 220 rainy days per year.

Thị Trấn Nước Hai has warmed by +1.5 °C between 1940 and 2025, or +0.18 °C per decade. This trend is statistically significant.

The hottest day of the period reached 37.0 °C (on 2 June 1958) and the coldest -0.6 °C (on 12 January 1955).

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 Nước HaiCao Bằng Province

coords: 22.74°, 106.15°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJulyColdest monthJanuaryWettest monthJuneDriest monthDecember

Mean daily temperature

20.0°C

Average daily high

23.7°C

Average daily low

17.2°C

Annual rainfall

1,920mm

Sunshine / day

6.4h

Mean relative humidity

83%

Average peak wind

11.7km/h

Seasonal range

13.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

52 d/yr

Rainy days (≥ 1 mm)

220 d/yr

Annual snowfall

0.1 cm

Average feels-like high

25.9 °C

Average feels-like low

18.7 °C

Average peak gust

29.3 km/h

Tropical nights (≥ 20 °C)

158 d/yr

Solar radiation

12.5 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.56 · 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

37.0 °C

2 June 1958

Coldest day

-0.6 °C

12 January 1955

Wettest day

199 mm

17 July 2006

Windiest day

46.8 km/h

30 August 1954

Strongest gust

128.2 km/h

17 September 2014

Hottest feels-like

43.6 °C

1 June 1958

Coldest feels-like

-3.9 °C

2 January 1974

Snowiest day

2.2 cm

28 December 1983

Sunniest day

13.3 h

16 June 1954

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	34.3 °C30 July 2025	4.2 °C12 January 2025	20.9 °C	2,261 mm	83	0
2024	36.0 °C26 July 2024	4.5 °C24 January 2024	21.4 °C	2,164 mm	83	0
2023	35.2 °C6 May 2023	3.3 °C30 January 2023	21.3 °C	1,622 mm	86	0
2022	33.8 °C25 July 2022	3.6 °C19 December 2022	20.5 °C	1,908 mm	74	0
2021	34.9 °C20 June 2021	4.3 °C2 January 2021	21.0 °C	1,721 mm	92	0
2020	34.8 °C21 May 2020	6.4 °C31 December 2020	20.8 °C	1,882 mm	75	0
2019	35.2 °C19 May 2019	3.6 °C8 December 2019	21.1 °C	2,100 mm	85	0
2018	34.2 °C8 June 2018	3.8 °C6 February 2018	20.7 °C	1,950 mm	68	0
2017	36.2 °C5 June 2017	6.7 °C25 December 2017	20.8 °C	1,899 mm	54	0
2016	34.6 °C2 August 2016	1.6 °C24 January 2016	21.0 °C	1,517 mm	91	0
2015	34.9 °C29 May 2015	4.9 °C13 January 2015	21.2 °C	1,816 mm	87	0
2014	34.6 °C14 May 2014	1.0 °C22 January 2014	20.5 °C	1,803 mm	76	0
2013	34.1 °C16 May 2013	1.9 °C19 December 2013	20.4 °C	1,689 mm	71	0
2012	35.3 °C3 May 2012	4.8 °C5 January 2012	20.3 °C	1,721 mm	69	0
2011	33.8 °C31 August 2011	3.3 °C26 December 2011	19.3 °C	1,353 mm	59	0
2010	34.2 °C5 July 2010	3.1 °C17 December 2010	20.9 °C	1,731 mm	79	0
2009	33.7 °C19 July 2009	3.8 °C11 January 2009	20.9 °C	1,428 mm	80	0
2008	34.4 °C30 July 2008	3.2 °C3 January 2008	19.7 °C	1,799 mm	50	0
2007	33.4 °C20 August 2007	5.2 °C9 January 2007	20.4 °C	1,514 mm	66	0
2006	34.9 °C12 April 2006	4.2 °C23 December 2006	20.6 °C	1,778 mm	78	0
2005	33.8 °C17 May 2005	4.1 °C2 January 2005	20.1 °C	1,615 mm	72	0
2004	34.6 °C3 July 2004	2.3 °C9 February 2004	20.1 °C	1,381 mm	53	0
2003	34.9 °C6 May 2003	2.7 °C7 January 2003	20.9 °C	1,553 mm	68	0
2002	33.3 °C6 August 2002	4.3 °C26 December 2002	20.6 °C	1,743 mm	60	0
2001	34.1 °C6 July 2001	2.3 °C24 December 2001	20.3 °C	1,797 mm	62	0
2000	33.2 °C25 April 2000	3.1 °C1 February 2000	20.2 °C	1,588 mm	52	0
1999	34.3 °C6 June 1999	0.7 °C23 December 1999	20.4 °C	1,825 mm	47	0
1998	34.4 °C24 April 1998	4.9 °C20 January 1998	20.9 °C	1,459 mm	63	0
1997	33.2 °C6 August 1997	6.6 °C10 January 1997	20.3 °C	2,006 mm	43	0
1996	34.3 °C2 August 1996	3.7 °C1 January 1996	19.7 °C	1,940 mm	49	0
1995	33.7 °C20 May 1995	2.0 °C31 December 1995	20.0 °C	1,974 mm	46	0
1994	34.5 °C2 May 1994	5.2 °C25 January 1994	20.4 °C	2,568 mm	45	0
1993	32.9 °C4 April 1993	2.5 °C30 January 1993	20.1 °C	1,913 mm	64	0
1992	35.0 °C1 September 1992	5.0 °C15 January 1992	20.0 °C	1,589 mm	69	0
1991	33.2 °C7 September 1991	3.8 °C28 December 1991	20.5 °C	1,688 mm	62	0
1990	35.0 °C22 August 1990	4.4 °C2 February 1990	20.4 °C	2,109 mm	61	0
1989	34.1 °C18 July 1989	4.6 °C13 January 1989	19.9 °C	1,816 mm	64	0
1988	35.8 °C21 May 1988	4.2 °C19 February 1988	19.9 °C	1,677 mm	60	0
1987	34.0 °C21 May 1987	3.1 °C17 December 1987	20.8 °C	1,811 mm	67	0
1986	34.6 °C2 July 1986	2.9 °C6 January 1986	20.1 °C	2,237 mm	52	0
1985	34.1 °C23 June 1985	2.7 °C24 December 1985	19.7 °C	2,083 mm	53	0
1984	33.3 °C4 April 1984	2.2 °C9 January 1984	19.4 °C	1,828 mm	54	0
1983	35.7 °C15 April 1983	1.8 °C23 January 1983	19.8 °C	2,073 mm	76	0
1982	33.7 °C2 August 1982	1.0 °C27 December 1982	20.1 °C	1,883 mm	55	0
1981	33.8 °C8 August 1981	3.9 °C12 January 1981	20.3 °C	2,017 mm	61	0
1980	34.2 °C28 August 1980	4.3 °C23 December 1980	20.3 °C	2,003 mm	48	0
1979	33.4 °C29 July 1979	5.0 °C24 November 1979	20.1 °C	1,843 mm	40	0
1978	34.2 °C25 June 1978	3.1 °C21 January 1978	20.0 °C	2,388 mm	50	0
1977	33.0 °C9 June 1977	1.7 °C5 January 1977	19.9 °C	1,921 mm	54	0
1976	33.4 °C26 May 1976	3.0 °C1 January 1976	19.6 °C	1,992 mm	52	0
1975	33.7 °C7 August 1975	0.1 °C31 December 1975	20.1 °C	2,182 mm	69	0
1974	32.8 °C8 May 1974	-0.6 °C2 January 1974	19.8 °C	1,967 mm	39	1
1973	34.0 °C23 June 1973	0.3 °C27 December 1973	20.5 °C	2,297 mm	52	0
1972	34.5 °C10 July 1972	3.9 °C16 January 1972	20.2 °C	2,206 mm	68	0
1971	34.7 °C22 July 1971	0.4 °C5 January 1971	19.6 °C	2,050 mm	36	0
1970	34.1 °C12 May 1970	3.8 °C31 January 1970	19.8 °C	1,974 mm	53	0
1969	35.2 °C28 July 1969	3.9 °C30 November 1969	20.1 °C	1,692 mm	59	0
1968	34.0 °C28 July 1968	2.0 °C14 February 1968	20.0 °C	2,323 mm	45	0
1967	33.8 °C1 August 1967	-0.4 °C16 January 1967	19.7 °C	1,725 mm	67	1
1966	32.2 °C29 April 1966	2.2 °C1 January 1966	19.4 °C	2,049 mm	14	0
1965	32.0 °C20 July 1965	1.2 °C31 December 1965	19.3 °C	2,100 mm	11	0
1964	32.7 °C8 August 1964	2.5 °C19 December 1964	19.8 °C	2,233 mm	49	0
1963	33.8 °C6 September 1963	0.1 °C15 January 1963	20.1 °C	2,116 mm	54	0
1962	33.8 °C30 July 1962	2.1 °C4 January 1962	19.9 °C	1,828 mm	55	0
1961	34.1 °C2 July 1961	0.3 °C17 January 1961	20.2 °C	2,261 mm	59	0
1960	33.7 °C6 May 1960	2.7 °C2 January 1960	20.3 °C	2,183 mm	57	0
1959	33.6 °C30 August 1959	4.1 °C11 January 1959	19.8 °C	1,901 mm	35	0
1958	37.0 °C2 June 1958	2.8 °C2 February 1958	20.2 °C	1,831 mm	64	0
1957	34.6 °C25 August 1957	1.8 °C11 February 1957	20.2 °C	1,930 mm	60	0
1956	32.6 °C4 September 1956	0.5 °C10 January 1956	19.4 °C	1,797 mm	16	0
1955	31.4 °C16 April 1955	-0.6 °C12 January 1955	19.3 °C	1,925 mm	9	1
1954	33.1 °C18 June 1954	2.6 °C16 December 1954	19.9 °C	1,834 mm	31	0
1953	33.1 °C13 August 1953	4.2 °C13 December 1953	19.9 °C	2,183 mm	39	0
1952	32.5 °C15 June 1952	2.8 °C19 February 1952	20.3 °C	2,362 mm	25	0
1951	32.5 °C10 April 1951	2.9 °C13 January 1951	19.5 °C	2,407 mm	8	0
1950	31.9 °C21 April 1950	4.9 °C18 February 1950	19.5 °C	2,224 mm	5	0
1949	33.6 °C7 June 1949	1.9 °C10 January 1949	20.0 °C	1,756 mm	28	0
1948	31.3 °C30 June 1948	2.7 °C26 January 1948	19.4 °C	2,568 mm	20	0
1947	32.1 °C14 June 1947	1.6 °C21 December 1947	19.1 °C	1,872 mm	10	0
1946	35.7 °C29 August 1946	1.6 °C11 January 1946	20.1 °C	1,218 mm	66	0
1945	30.5 °C21 June 1945	2.1 °C9 February 1945	18.2 °C	1,677 mm	3	0
1944	31.7 °C8 April 1944	-0.1 °C21 December 1944	19.0 °C	2,141 mm	6	1
1943	30.9 °C29 May 1943	2.6 °C13 January 1943	18.9 °C	2,143 mm	9	0
1942	30.2 °C17 May 1942	3.7 °C14 February 1942	19.0 °C	2,424 mm	4	0
1941	31.0 °C26 April 1941	2.8 °C4 February 1941	19.2 °C	1,994 mm	6	0
1940	31.0 °C15 May 1940	1.0 °C25 January 1940	18.9 °C	1,795 mm	7	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

24.8 °C

+1.1 °C

Hot days (≥ 30 °C)

83 d/yr

+31

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2261 mm

+341 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	18.3 °C	+2.7 °C	15 mm	-44 mm
Feb	14.7 °C	-2.3 °C	63 mm	-6 mm
Mar	22.3 °C	+1.5 °C	37 mm	-55 mm
Apr	27.4 °C	+2.6 °C	83 mm	-54 mm
May	27.9 °C	+0.3 °C	290 mm	+43 mm
Jun	29.2 °C	+0.4 °C	337 mm	+29 mm
Jul	30.9 °C	+1.7 °C	323 mm	+28 mm
Aug	29.4 °C	+0.4 °C	360 mm	+68 mm
Sep	29.3 °C	+1.3 °C	386 mm	+198 mm
Oct	26.4 °C	+1.3 °C	237 mm	+120 mm
Nov	21.4 °C	-0.1 °C	71 mm	+3 mm
Dec	19.3 °C	+1.8 °C	58 mm	+11 mm

The year's extremes

Hottest day

34.3 °C

30 Jul 2025

Coldest day

4.2 °C

12 Jan 2025

Wettest day

105.0 mm

7 Oct 2025

Windiest day

29.9 km/h

12 Apr 2025

Strongest gust

72.7 km/h

6 Oct 2025

Hottest feels-like

43.1 °C

30 Jul 2025

Coldest feels-like

1.0 °C

12 Jan 2025

Sunniest day

12.7 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 Nước Hai?

Thị Trấn Nước Hai has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.0 °C and it receives 1,920 mm of precipitation per year.

What is the hottest day ever recorded in Thị Trấn Nước Hai?

The hottest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 2 June 1958, reaching 37.0 °C.

What is the coldest day in Thị Trấn Nước Hai?

The coldest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 12 January 1955, at -0.6 °C.

Does it snow in Thị Trấn Nước Hai?

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

Has the climate of Thị Trấn Nước Hai warmed?

Yes: Thị Trấn Nước Hai warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Thị Trấn Nước Hai?

The wettest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 17 July 2006, with 199 mm of rain in 24 hours.

What was the windiest day in Thị Trấn Nước Hai?

The windiest day measured in Thị Trấn Nước Hai between 1940 and 2025 was 30 August 1954, with winds reaching 46.8 km/h.

What is the warmest month in Thị Trấn Nước Hai?

The warmest month in Thị Trấn Nước Hai is July (25.5 °C on average); the coldest is January (12.3 °C).

How much does it rain in Thị Trấn Nước Hai?

Thị Trấn Nước Hai receives on average 1,920 mm of precipitation per year, spread over about 220 rainy days.

Is it sunny in Thị Trấn Nước Hai?

Thị Trấn Nước Hai gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.

What is the biggest single-day snowfall in Thị Trấn Nước Hai?

The heaviest 24-hour snowfall measured in Thị Trấn Nước Hai between 1940 and 2025 was 28 December 1983, with 2.2 cm.

Are there tropical nights in Thị Trấn Nước Hai?

Yes: Thị Trấn Nước Hai has on average 158 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Thị Trấn Nước Hai?

In Thị Trấn Nước Hai, between 1940 and 2025, the highest apparent temperature reached 43.6 °C on 1 June 1958, and the lowest was -3.9 °C on 2 January 1974.

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