Thai Nguyen climate — normals and trends

Q: What is the climate of Thai Nguyen?

Thai Nguyen has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.3 °C and it receives 2,198 mm of precipitation per year.

Q: What is the hottest day ever recorded in Thai Nguyen?

The hottest day measured in Thai Nguyen between 1940 and 2025 was 30 July 1946, reaching 40.6 °C.

Q: What is the coldest day in Thai Nguyen?

The coldest day measured in Thai Nguyen between 1940 and 2025 was 12 January 1955, at 2.1 °C.

Q: Does it snow in Thai Nguyen?

Almost never: Thai Nguyen sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Thai Nguyen warmed?

Yes: Thai Nguyen warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Thai Nguyen?

The wettest day measured in Thai Nguyen between 1940 and 2025 was 21 June 2010, with 199 mm of rain in 24 hours.

Q: What was the windiest day in Thai Nguyen?

The windiest day measured in Thai Nguyen between 1940 and 2025 was 2 October 1942, with winds reaching 38.7 km/h.

Q: What is the warmest month in Thai Nguyen?

The warmest month in Thai Nguyen is July (28.5 °C on average); the coldest is January (16.0 °C).

Q: How much does it rain in Thai Nguyen?

Thai Nguyen receives on average 2,198 mm of precipitation per year, spread over about 200 rainy days.

Q: Is it sunny in Thai Nguyen?

Thai Nguyen gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.

Thai Nguyen (Vietnam) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 23.3 °C and it receives 2,198 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 (28.5 °C on average) and the coldest is January (16.0 °C). Rainfall peaks in August.

Thai Nguyen averages 0 frost days, 138 hot days (≥ 30 °C) and 200 rainy days per year.

Thai Nguyen has warmed by +1.3 °C between 1940 and 2025, or +0.16 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.6 °C (on 30 July 1946) and the coldest 2.1 °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

Thai NguyenThai Nguyen

coords: 21.59°, 105.85°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthDecember

Mean daily temperature

23.3°C

Average daily high

27.0°C

Average daily low

20.4°C

Annual rainfall

2,198mm

Sunshine / day

6.4h

Mean relative humidity

82%

Average peak wind

9.7km/h

Seasonal range

12.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

138 d/yr

Rainy days (≥ 1 mm)

200 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.8 °C

Average feels-like low

23.3 °C

Average peak gust

26.4 km/h

Tropical nights (≥ 20 °C)

216 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 = 0.46 · 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

40.6 °C

30 July 1946

Coldest day

2.1 °C

12 January 1955

Wettest day

199 mm

21 June 2010

Windiest day

38.7 km/h

2 October 1942

Strongest gust

122.0 km/h

23 July 1980

Hottest feels-like

47.6 °C

30 May 2015

Coldest feels-like

-0.7 °C

12 January 1955

Sunniest day

13.2 h

14 June 1981

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.4 °C1 June 2025	7.4 °C13 January 2025	23.9 °C	2,577 mm	148
2024	38.1 °C27 April 2024	8.5 °C24 January 2024	24.6 °C	2,845 mm	182
2023	37.7 °C17 May 2023	7.5 °C30 January 2023	24.5 °C	1,962 mm	165
2022	37.0 °C4 June 2022	7.9 °C19 December 2022	23.7 °C	2,334 mm	144
2021	38.7 °C3 June 2021	6.9 °C2 January 2021	24.2 °C	1,861 mm	165
2020	38.3 °C21 May 2020	9.6 °C31 December 2020	24.0 °C	2,315 mm	135
2019	38.0 °C19 May 2019	6.7 °C8 December 2019	24.5 °C	2,075 mm	156
2018	38.1 °C6 July 2018	7.4 °C6 February 2018	24.0 °C	2,278 mm	149
2017	39.2 °C3 June 2017	7.9 °C20 December 2017	23.9 °C	2,508 mm	136
2016	37.5 °C2 June 2016	5.5 °C24 January 2016	24.2 °C	1,922 mm	174
2015	37.8 °C28 May 2015	8.7 °C13 January 2015	24.5 °C	2,204 mm	174
2014	37.9 °C22 May 2014	5.3 °C22 January 2014	23.6 °C	2,197 mm	157
2013	38.2 °C16 May 2013	5.4 °C20 December 2013	23.4 °C	2,169 mm	151
2012	37.7 °C3 May 2012	8.7 °C5 January 2012	23.5 °C	1,912 mm	165
2011	36.9 °C7 July 2011	6.9 °C26 December 2011	22.6 °C	1,760 mm	130
2010	37.4 °C21 May 2010	8.4 °C17 December 2010	24.0 °C	2,269 mm	158
2009	37.3 °C8 June 2009	6.5 °C11 January 2009	23.9 °C	1,625 mm	160
2008	36.3 °C8 April 2008	6.1 °C3 January 2008	22.9 °C	2,263 mm	143
2007	37.0 °C9 June 2007	7.6 °C30 November 2007	23.6 °C	2,073 mm	145
2006	37.4 °C12 April 2006	7.1 °C23 December 2006	23.9 °C	1,848 mm	172
2005	36.6 °C13 June 2005	6.8 °C22 December 2005	23.4 °C	1,805 mm	151
2004	37.2 °C3 July 2004	5.9 °C9 February 2004	23.3 °C	1,650 mm	149
2003	39.0 °C6 May 2003	6.1 °C7 January 2003	24.2 °C	1,749 mm	168
2002	36.5 °C21 May 2002	8.7 °C27 December 2002	23.7 °C	2,175 mm	162
2001	36.6 °C21 April 2001	6.1 °C25 December 2001	23.5 °C	2,154 mm	138
2000	36.3 °C12 August 2000	6.8 °C2 February 2000	23.5 °C	2,158 mm	139
1999	35.7 °C6 June 1999	3.3 °C24 December 1999	23.5 °C	2,055 mm	146
1998	37.7 °C15 June 1998	9.1 °C20 January 1998	24.2 °C	1,992 mm	159
1997	37.6 °C8 June 1997	8.9 °C12 January 1997	23.5 °C	2,468 mm	138
1996	37.9 °C6 May 1996	6.9 °C21 February 1996	22.9 °C	2,281 mm	143
1995	37.3 °C21 June 1995	5.8 °C31 December 1995	23.1 °C	2,295 mm	140
1994	38.8 °C3 May 1994	9.2 °C23 January 1994	23.5 °C	2,584 mm	120
1993	36.6 °C1 June 1993	5.6 °C30 January 1993	23.3 °C	2,082 mm	142
1992	36.7 °C21 April 1992	7.7 °C2 December 1992	23.0 °C	1,987 mm	134
1991	36.5 °C24 May 1991	8.8 °C28 December 1991	23.7 °C	1,785 mm	145
1990	37.9 °C22 April 1990	9.0 °C6 December 1990	23.5 °C	2,603 mm	134
1989	36.6 °C18 June 1989	8.5 °C29 January 1989	23.0 °C	2,163 mm	133
1988	38.1 °C21 May 1988	7.0 °C20 February 1988	23.0 °C	2,131 mm	141
1987	37.5 °C21 May 1987	6.3 °C8 December 1987	24.1 °C	2,239 mm	161
1986	37.3 °C2 July 1986	5.9 °C7 January 1986	23.2 °C	2,732 mm	137
1985	37.5 °C27 May 1985	6.5 °C24 December 1985	22.8 °C	2,181 mm	152
1984	36.4 °C4 April 1984	6.4 °C9 January 1984	22.7 °C	2,159 mm	127
1983	38.1 °C19 June 1983	5.3 °C23 January 1983	22.9 °C	2,143 mm	154
1982	37.0 °C21 June 1982	3.7 °C27 December 1982	23.2 °C	2,418 mm	129
1981	36.8 °C25 August 1981	7.3 °C8 December 1981	23.5 °C	2,739 mm	154
1980	37.4 °C31 May 1980	7.8 °C8 February 1980	23.4 °C	2,544 mm	138
1979	36.3 °C15 July 1979	8.9 °C26 December 1979	23.4 °C	2,398 mm	158
1978	36.2 °C13 June 1978	7.3 °C21 January 1978	22.9 °C	2,764 mm	127
1977	37.0 °C9 June 1977	5.4 °C31 January 1977	22.9 °C	1,939 mm	139
1976	36.1 °C16 June 1976	6.6 °C1 January 1976	22.5 °C	2,041 mm	132
1975	36.0 °C30 July 1975	3.1 °C31 December 1975	23.0 °C	2,645 mm	140
1974	36.8 °C8 May 1974	2.9 °C2 January 1974	23.0 °C	2,360 mm	155
1973	39.2 °C8 April 1973	3.4 °C27 December 1973	23.8 °C	2,799 mm	154
1972	38.6 °C10 May 1972	6.3 °C16 January 1972	23.3 °C	2,654 mm	155
1971	36.1 °C4 June 1971	3.6 °C5 January 1971	22.7 °C	2,314 mm	125
1970	36.6 °C9 May 1970	7.0 °C31 January 1970	23.0 °C	2,012 mm	139
1969	37.9 °C13 May 1969	6.9 °C11 December 1969	23.3 °C	1,751 mm	171
1968	37.2 °C24 May 1968	3.8 °C14 February 1968	23.2 °C	2,258 mm	134
1967	37.8 °C6 July 1967	2.9 °C18 January 1967	22.9 °C	1,622 mm	138
1966	36.1 °C12 May 1966	5.5 °C1 January 1966	22.8 °C	2,357 mm	103
1965	35.5 °C21 July 1965	6.1 °C31 December 1965	22.6 °C	2,116 mm	106
1964	36.7 °C18 June 1964	5.2 °C19 December 1964	22.9 °C	2,741 mm	128
1963	35.5 °C6 September 1963	4.2 °C15 January 1963	22.9 °C	2,295 mm	130
1962	36.9 °C28 May 1962	6.5 °C28 January 1962	22.9 °C	1,805 mm	142
1961	37.2 °C1 June 1961	3.5 °C18 January 1961	23.3 °C	2,418 mm	137
1960	36.8 °C6 May 1960	4.5 °C2 January 1960	23.3 °C	2,464 mm	133
1959	36.8 °C12 June 1959	8.6 °C13 January 1959	23.1 °C	2,040 mm	137
1958	38.8 °C2 June 1958	5.3 °C2 February 1958	23.3 °C	1,858 mm	144
1957	37.9 °C12 May 1957	4.9 °C14 February 1957	23.2 °C	2,012 mm	143
1956	36.6 °C4 September 1956	6.3 °C10 January 1956	22.7 °C	2,212 mm	126
1955	36.9 °C16 April 1955	2.1 °C12 January 1955	22.8 °C	2,085 mm	113
1954	37.8 °C29 July 1954	6.3 °C16 December 1954	23.4 °C	1,888 mm	125
1953	37.1 °C26 June 1953	7.0 °C13 December 1953	23.2 °C	2,317 mm	129
1952	36.3 °C10 April 1952	6.6 °C19 February 1952	23.4 °C	2,795 mm	121
1951	34.4 °C10 April 1951	7.3 °C14 January 1951	22.8 °C	2,427 mm	103
1950	36.0 °C21 April 1950	8.8 °C17 February 1950	23.0 °C	2,529 mm	121
1949	39.1 °C14 June 1949	5.0 °C10 January 1949	23.5 °C	1,736 mm	122
1948	34.8 °C15 June 1948	6.1 °C3 January 1948	22.9 °C	2,063 mm	103
1947	35.7 °C14 June 1947	5.7 °C21 December 1947	22.5 °C	2,007 mm	92
1946	40.6 °C30 July 1946	5.2 °C11 January 1946	24.3 °C	1,116 mm	157
1945	33.8 °C13 July 1945	4.9 °C18 January 1945	21.7 °C	2,293 mm	82
1944	36.7 °C8 April 1944	2.9 °C21 December 1944	22.5 °C	2,398 mm	93
1943	34.6 °C26 June 1943	5.6 °C13 January 1943	22.1 °C	2,017 mm	81
1942	34.4 °C24 May 1942	6.8 °C7 December 1942	22.4 °C	2,701 mm	74
1941	33.8 °C26 April 1941	8.3 °C4 February 1941	22.6 °C	2,280 mm	92
1940	34.5 °C15 May 1940	5.4 °C25 January 1940	22.3 °C	2,220 mm	92

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

27.6 °C

+0.6 °C

Hot days (≥ 30 °C)

148 d/yr

+10

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2577 mm

+379 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	22.0 °C	+2.6 °C	21 mm	-33 mm
Feb	18.6 °C	-1.9 °C	59 mm	-0 mm
Mar	24.1 °C	+0.2 °C	57 mm	-31 mm
Apr	29.0 °C	+1.0 °C	116 mm	-21 mm
May	30.5 °C	-0.5 °C	405 mm	+113 mm
Jun	32.5 °C	+0.4 °C	520 mm	+176 mm
Jul	33.1 °C	+0.8 °C	336 mm	+1 mm
Aug	32.0 °C	+0.3 °C	350 mm	-38 mm
Sep	32.0 °C	+1.2 °C	361 mm	+101 mm
Oct	29.2 °C	+0.9 °C	233 mm	+86 mm
Nov	24.2 °C	-0.8 °C	77 mm	+17 mm
Dec	23.0 °C	+1.8 °C	43 mm	+9 mm

The year's extremes

Hottest day

38.4 °C

1 Jun 2025

Coldest day

7.4 °C

13 Jan 2025

Wettest day

99.4 mm

6 Oct 2025

Windiest day

25.8 km/h

22 Jul 2025

Strongest gust

73.1 km/h

29 Sep 2025

Hottest feels-like

46.4 °C

2 Jun 2025

Coldest feels-like

5.6 °C

12 Jan 2025

Sunniest day

12.5 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 Thai Nguyen?

Thai Nguyen has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.3 °C and it receives 2,198 mm of precipitation per year.

What is the hottest day ever recorded in Thai Nguyen?

The hottest day measured in Thai Nguyen between 1940 and 2025 was 30 July 1946, reaching 40.6 °C.

What is the coldest day in Thai Nguyen?

The coldest day measured in Thai Nguyen between 1940 and 2025 was 12 January 1955, at 2.1 °C.

Does it snow in Thai Nguyen?

Almost never: Thai Nguyen sees virtually no snow, with about 0 frost days per year.

Has the climate of Thai Nguyen warmed?

Yes: Thai Nguyen warmed by +1.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Thai Nguyen?

The wettest day measured in Thai Nguyen between 1940 and 2025 was 21 June 2010, with 199 mm of rain in 24 hours.

What was the windiest day in Thai Nguyen?

The windiest day measured in Thai Nguyen between 1940 and 2025 was 2 October 1942, with winds reaching 38.7 km/h.

What is the warmest month in Thai Nguyen?

The warmest month in Thai Nguyen is July (28.5 °C on average); the coldest is January (16.0 °C).

How much does it rain in Thai Nguyen?

Thai Nguyen receives on average 2,198 mm of precipitation per year, spread over about 200 rainy days.

Is it sunny in Thai Nguyen?

Thai Nguyen gets on average 6.4 hours of sunshine per day, roughly 2,336 hours per year over 1940-2025.

Are there tropical nights in Thai Nguyen?

Yes: Thai Nguyen has on average 216 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Thai Nguyen?

In Thai Nguyen, between 1940 and 2025, the highest apparent temperature reached 47.6 °C on 30 May 2015, and the lowest was -0.7 °C on 12 January 1955.

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