Nga Sơn climate — normals and trends

Q: What is the climate of Nga Sơn?

Nga Sơn has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 1,610 mm of precipitation per year.

Q: What is the hottest day ever recorded in Nga Sơn?

The hottest day measured in Nga Sơn between 1940 and 2025 was 23 June 1946, reaching 39.2 °C.

Q: What is the coldest day in Nga Sơn?

The coldest day measured in Nga Sơn between 1940 and 2025 was 24 January 2016, at 6.1 °C.

Q: Does it snow in Nga Sơn?

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

Q: Has the climate of Nga Sơn warmed?

Yes: Nga Sơn warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Nga Sơn?

The wettest day measured in Nga Sơn between 1940 and 2025 was 24 October 1971, with 367 mm of rain in 24 hours.

Q: What was the windiest day in Nga Sơn?

The windiest day measured in Nga Sơn between 1940 and 2025 was 28 October 2012, with winds reaching 64.9 km/h.

Q: What is the warmest month in Nga Sơn?

The warmest month in Nga Sơn is July (29.7 °C on average); the coldest is January (17.4 °C).

Q: How much does it rain in Nga Sơn?

Nga Sơn receives on average 1,610 mm of precipitation per year, spread over about 149 rainy days.

Q: Is it sunny in Nga Sơn?

Nga Sơn gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.

Nga Sơn (Vietnam) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 24.1 °C and it receives 1,610 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 (29.7 °C on average) and the coldest is January (17.4 °C). Rainfall peaks in September.

Nga Sơn averages 0 frost days, 116 hot days (≥ 30 °C) and 149 rainy days per year.

Nga Sơn has warmed by +1.0 °C between 1940 and 2025, or +0.11 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.2 °C (on 23 June 1946) and the coldest 6.1 °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

Nga SơnThanh Hóa Province

coords: 20.01°, 105.97°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJulyColdest monthJanuaryWettest monthSeptemberDriest monthFebruary

Mean daily temperature

24.1°C

Average daily high

26.6°C

Average daily low

22.1°C

Annual rainfall

1,610mm

Sunshine / day

7.7h

Mean relative humidity

81%

Average peak wind

17.4km/h

Seasonal range

12.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

116 d/yr

Rainy days (≥ 1 mm)

149 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.3 °C

Average feels-like low

24.3 °C

Average peak gust

32.2 km/h

Tropical nights (≥ 20 °C)

245 d/yr

Solar radiation

15.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.28 · 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

39.2 °C

23 June 1946

Coldest day

6.1 °C

24 January 2016

Wettest day

367 mm

24 October 1971

Windiest day

64.9 km/h

28 October 2012

Strongest gust

121.0 km/h

22 August 1996

Hottest feels-like

46.4 °C

1 June 2023

Coldest feels-like

-0.4 °C

24 January 2016

Sunniest day

13.0 h

25 June 1956

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.6 °C2 June 2025	10.7 °C13 January 2025	24.5 °C	2,369 mm	132
2024	36.6 °C27 April 2024	9.1 °C24 January 2024	25.4 °C	1,969 mm	156
2023	36.2 °C2 June 2023	10.4 °C30 January 2023	25.2 °C	1,296 mm	143
2022	35.6 °C4 June 2022	8.6 °C20 February 2022	24.5 °C	1,771 mm	126
2021	37.5 °C20 June 2021	9.3 °C9 January 2021	25.0 °C	1,494 mm	144
2020	37.2 °C21 May 2020	11.9 °C17 December 2020	25.1 °C	1,633 mm	135
2019	37.1 °C28 June 2019	11.0 °C1 January 2019	25.6 °C	1,674 mm	142
2018	37.1 °C3 July 2018	9.6 °C30 January 2018	24.6 °C	1,963 mm	124
2017	37.8 °C4 June 2017	11.5 °C18 December 2017	24.7 °C	1,742 mm	125
2016	36.5 °C13 June 2016	6.1 °C24 January 2016	24.8 °C	1,637 mm	143
2015	37.0 °C3 July 2015	11.0 °C13 January 2015	25.2 °C	1,746 mm	148
2014	35.8 °C22 May 2014	9.0 °C13 February 2014	24.5 °C	1,581 mm	134
2013	36.4 °C16 May 2013	8.5 °C20 December 2013	24.2 °C	2,156 mm	121
2012	36.0 °C22 July 2012	9.4 °C5 January 2012	24.3 °C	1,760 mm	128
2011	36.1 °C7 July 2011	8.0 °C11 January 2011	23.2 °C	1,979 mm	105
2010	37.4 °C5 July 2010	11.1 °C17 February 2010	24.8 °C	1,880 mm	125
2009	35.8 °C27 July 2009	10.1 °C11 January 2009	24.6 °C	1,622 mm	136
2008	35.6 °C23 June 2008	7.2 °C2 February 2008	23.7 °C	1,550 mm	117
2007	36.6 °C9 June 2007	10.3 °C29 January 2007	24.4 °C	1,320 mm	116
2006	36.1 °C6 June 2006	11.0 °C7 January 2006	24.6 °C	1,165 mm	127
2005	36.2 °C21 June 2005	9.0 °C1 January 2005	24.1 °C	1,660 mm	132
2004	36.0 °C23 June 2004	9.8 °C7 February 2004	24.0 °C	1,370 mm	99
2003	36.5 °C6 May 2003	8.7 °C7 January 2003	24.9 °C	1,213 mm	141
2002	34.9 °C21 May 2002	7.9 °C27 December 2002	24.3 °C	1,375 mm	119
2001	35.4 °C24 August 2001	10.8 °C24 December 2001	24.0 °C	1,837 mm	106
2000	35.0 °C13 August 2000	9.6 °C1 February 2000	24.0 °C	1,463 mm	116
1999	35.2 °C19 July 1999	7.4 °C24 December 1999	24.2 °C	1,424 mm	124
1998	36.4 °C23 May 1998	10.7 °C5 February 1998	25.1 °C	1,015 mm	141
1997	35.9 °C8 June 1997	12.0 °C12 January 1997	24.4 °C	1,633 mm	111
1996	35.6 °C2 August 1996	6.5 °C21 February 1996	23.7 °C	2,310 mm	112
1995	35.6 °C21 May 1995	10.3 °C31 December 1995	23.9 °C	1,359 mm	106
1994	36.6 °C3 May 1994	10.9 °C21 January 1994	24.2 °C	2,112 mm	90
1993	36.2 °C4 June 1993	9.0 °C30 January 1993	24.1 °C	1,350 mm	119
1992	36.2 °C24 June 1992	10.5 °C15 January 1992	23.9 °C	1,477 mm	110
1991	34.8 °C24 May 1991	7.4 °C28 December 1991	24.6 °C	1,151 mm	124
1990	36.5 °C21 August 1990	9.7 °C1 February 1990	24.4 °C	1,717 mm	113
1989	35.1 °C18 June 1989	9.5 °C14 January 1989	23.7 °C	1,851 mm	112
1988	35.9 °C23 June 1988	8.9 °C19 February 1988	24.0 °C	1,389 mm	127
1987	36.9 °C24 June 1987	9.7 °C8 December 1987	24.9 °C	1,480 mm	145
1986	35.8 °C2 July 1986	7.2 °C1 March 1986	23.9 °C	1,551 mm	112
1985	35.4 °C26 June 1985	10.7 °C10 January 1985	23.5 °C	2,045 mm	97
1984	35.5 °C15 June 1984	9.2 °C9 January 1984	23.6 °C	1,445 mm	110
1983	37.1 °C2 July 1983	7.7 °C29 December 1983	23.9 °C	1,530 mm	138
1982	36.1 °C2 June 1982	8.6 °C27 December 1982	24.0 °C	1,856 mm	112
1981	35.7 °C25 August 1981	10.0 °C21 December 1981	24.2 °C	1,860 mm	119
1980	35.3 °C31 May 1980	8.1 °C9 February 1980	24.2 °C	1,818 mm	106
1979	35.5 °C30 July 1979	10.3 °C1 February 1979	24.3 °C	1,480 mm	114
1978	35.8 °C25 June 1978	10.3 °C18 January 1978	23.9 °C	2,109 mm	100
1977	36.4 °C21 June 1977	7.4 °C31 January 1977	23.8 °C	1,379 mm	121
1976	35.1 °C10 July 1976	8.8 °C28 December 1976	23.4 °C	1,389 mm	110
1975	35.2 °C30 July 1975	7.1 °C14 December 1975	23.7 °C	1,646 mm	114
1974	36.8 °C11 July 1974	6.9 °C2 January 1974	23.9 °C	1,664 mm	125
1973	36.7 °C20 July 1973	9.2 °C27 December 1973	24.6 °C	2,126 mm	122
1972	37.1 °C11 July 1972	8.6 °C8 February 1972	23.9 °C	1,942 mm	122
1971	36.6 °C18 June 1971	8.9 °C30 January 1971	23.4 °C	2,001 mm	95
1970	35.1 °C7 July 1970	10.8 °C19 January 1970	23.9 °C	1,503 mm	119
1969	38.1 °C23 May 1969	10.0 °C6 February 1969	24.3 °C	1,022 mm	137
1968	37.7 °C7 July 1968	8.1 °C13 February 1968	24.1 °C	1,366 mm	120
1967	37.7 °C6 July 1967	7.2 °C18 January 1967	23.5 °C	1,425 mm	111
1966	35.6 °C12 May 1966	9.0 °C27 December 1966	24.3 °C	1,631 mm	93
1965	35.1 °C21 July 1965	7.8 °C18 December 1965	23.8 °C	1,470 mm	86
1964	36.8 °C31 July 1964	8.2 °C25 February 1964	23.7 °C	1,895 mm	111
1963	35.1 °C18 July 1963	7.7 °C16 January 1963	23.6 °C	1,853 mm	108
1962	35.3 °C29 May 1962	9.3 °C28 January 1962	23.5 °C	1,392 mm	114
1961	36.9 °C13 July 1961	7.7 °C17 January 1961	24.1 °C	1,669 mm	102
1960	35.8 °C15 June 1960	8.1 °C25 January 1960	24.0 °C	1,522 mm	112
1959	36.1 °C12 June 1959	9.2 °C12 January 1959	24.0 °C	1,404 mm	98
1958	35.1 °C12 July 1958	6.9 °C1 February 1958	23.8 °C	1,389 mm	116
1957	38.4 °C14 May 1957	7.9 °C11 February 1957	23.9 °C	1,667 mm	113
1956	35.2 °C28 July 1956	8.7 °C8 January 1956	23.6 °C	1,741 mm	109
1955	34.0 °C11 June 1955	6.4 °C12 January 1955	23.7 °C	1,370 mm	106
1954	37.1 °C18 June 1954	10.1 °C26 January 1954	24.5 °C	1,396 mm	121
1953	35.0 °C15 July 1953	11.3 °C13 December 1953	24.3 °C	1,966 mm	112
1952	36.3 °C11 July 1952	7.5 °C19 February 1952	24.6 °C	2,040 mm	119
1951	34.7 °C31 July 1951	7.9 °C13 January 1951	24.1 °C	1,702 mm	112
1950	35.8 °C23 July 1950	11.2 °C17 February 1950	24.5 °C	1,493 mm	122
1949	37.0 °C14 June 1949	9.1 °C8 January 1949	24.5 °C	1,212 mm	116
1948	35.7 °C17 June 1948	8.5 °C26 January 1948	24.1 °C	1,349 mm	106
1947	34.7 °C29 July 1947	9.2 °C20 December 1947	23.7 °C	1,203 mm	92
1946	39.2 °C23 June 1946	9.5 °C8 January 1946	24.9 °C	916 mm	130
1945	34.2 °C31 July 1945	7.9 °C4 February 1945	22.9 °C	1,349 mm	79
1944	34.3 °C21 July 1944	7.5 °C21 December 1944	23.6 °C	1,503 mm	102
1943	35.2 °C17 July 1943	9.9 °C13 January 1943	23.4 °C	1,367 mm	88
1942	33.9 °C7 August 1942	9.1 °C13 February 1942	23.7 °C	1,557 mm	69
1941	33.5 °C15 July 1941	10.2 °C1 February 1941	23.9 °C	1,961 mm	88
1940	34.2 °C16 May 1940	8.9 °C23 January 1940	23.5 °C	1,746 mm	87

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

27.0 °C

+0.4 °C

Hot days (≥ 30 °C)

132 d/yr

+16

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2369 mm

+759 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.1 °C	+1.2 °C	17 mm	-14 mm
Feb	19.8 °C	-0.8 °C	31 mm	+6 mm
Mar	22.6 °C	-0.5 °C	26 mm	-11 mm
Apr	26.7 °C	+0.1 °C	95 mm	+36 mm
May	30.1 °C	-0.1 °C	196 mm	+44 mm
Jun	32.6 °C	+0.5 °C	159 mm	-14 mm
Jul	32.2 °C	0.0 °C	499 mm	+316 mm
Aug	31.5 °C	+0.2 °C	579 mm	+268 mm
Sep	31.0 °C	+1.1 °C	474 mm	+154 mm
Oct	28.4 °C	+0.8 °C	144 mm	-74 mm
Nov	24.0 °C	-0.8 °C	105 mm	+33 mm
Dec	23.2 °C	+1.8 °C	45 mm	+17 mm

The year's extremes

Hottest day

36.6 °C

2 Jun 2025

Coldest day

10.7 °C

13 Jan 2025

Wettest day

231.2 mm

22 Jul 2025

Windiest day

61.7 km/h

29 Sep 2025

Strongest gust

112.0 km/h

29 Sep 2025

Hottest feels-like

43.8 °C

2 Jun 2025

Coldest feels-like

7.9 °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 Nga Sơn?

Nga Sơn has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 24.1 °C and it receives 1,610 mm of precipitation per year.

What is the hottest day ever recorded in Nga Sơn?

The hottest day measured in Nga Sơn between 1940 and 2025 was 23 June 1946, reaching 39.2 °C.

What is the coldest day in Nga Sơn?

The coldest day measured in Nga Sơn between 1940 and 2025 was 24 January 2016, at 6.1 °C.

Does it snow in Nga Sơn?

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

Has the climate of Nga Sơn warmed?

Yes: Nga Sơn warmed by +1.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Nga Sơn?

The wettest day measured in Nga Sơn between 1940 and 2025 was 24 October 1971, with 367 mm of rain in 24 hours.

What was the windiest day in Nga Sơn?

The windiest day measured in Nga Sơn between 1940 and 2025 was 28 October 2012, with winds reaching 64.9 km/h.

What is the warmest month in Nga Sơn?

The warmest month in Nga Sơn is July (29.7 °C on average); the coldest is January (17.4 °C).

How much does it rain in Nga Sơn?

Nga Sơn receives on average 1,610 mm of precipitation per year, spread over about 149 rainy days.

Is it sunny in Nga Sơn?

Nga Sơn gets on average 7.7 hours of sunshine per day, roughly 2,811 hours per year over 1940-2025.

Are there tropical nights in Nga Sơn?

Yes: Nga Sơn has on average 245 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Nga Sơn?

In Nga Sơn, between 1940 and 2025, the highest apparent temperature reached 46.4 °C on 1 June 2023, and the lowest was -0.4 °C on 24 January 2016.

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