Nghi Sơn climate — normals and trends

Q: What is the climate of Nghi Sơn?

Nghi Sơn has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.9 °C and it receives 1,415 mm of precipitation per year.

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

The hottest day measured in Nghi Sơn between 1940 and 2025 was 29 May 2015, reaching 43.1 °C.

Q: What is the coldest day in Nghi Sơn?

The coldest day measured in Nghi Sơn between 1940 and 2025 was 12 January 1955, at 6.1 °C.

Q: Does it snow in Nghi Sơn?

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

Q: Has the climate of Nghi Sơn warmed?

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

Q: What is the wettest day in Nghi Sơn?

The wettest day measured in Nghi Sơn between 1940 and 2025 was 1 September 1973, with 394 mm of rain in 24 hours.

Q: What was the windiest day in Nghi Sơn?

The windiest day measured in Nghi Sơn between 1940 and 2025 was 22 August 1987, with winds reaching 66.7 km/h.

Q: What is the warmest month in Nghi Sơn?

The warmest month in Nghi Sơn is July (30.9 °C on average); the coldest is January (18.0 °C).

Q: How much does it rain in Nghi Sơn?

Nghi Sơn receives on average 1,415 mm of precipitation per year, spread over about 133 rainy days.

Q: Is it sunny in Nghi Sơn?

Nghi Sơn gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.

Nghi Sơn (Vietnam) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.9 °C and it receives 1,415 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 (30.9 °C on average) and the coldest is January (18.0 °C). Rainfall peaks in September.

Nghi Sơn averages 0 frost days, 152 hot days (≥ 30 °C) and 133 rainy days per year.

Nghi Sơn has warmed by +1.0 °C between 1940 and 2025, or +0.12 °C per decade. This trend is statistically significant.

The hottest day of the period reached 43.1 °C (on 29 May 2015) and the coldest 6.1 °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

Nghi SơnThanh Hóa Province

coords: 19.33°, 105.82°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthJulyColdest monthJanuaryWettest monthSeptemberDriest monthFebruary

Mean daily temperature

24.9°C

Average daily high

28.2°C

Average daily low

22.4°C

Annual rainfall

1,415mm

Sunshine / day

8.0h

Mean relative humidity

78%

Average peak wind

17.1km/h

Seasonal range

12.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

152 d/yr

Rainy days (≥ 1 mm)

133 d/yr

Annual snowfall

0.0 cm

Average feels-like high

31.7 °C

Average feels-like low

24.8 °C

Average peak gust

35.2 km/h

Tropical nights (≥ 20 °C)

250 d/yr

Solar radiation

15.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.0 °C

since 1940

+0.1 °C per decade · r² = 0.26 · 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

43.1 °C

29 May 2015

Coldest day

6.1 °C

12 January 1955

Wettest day

394 mm

1 September 1973

Windiest day

66.7 km/h

22 August 1987

Strongest gust

127.4 km/h

29 September 2025

Hottest feels-like

49.0 °C

20 May 2019

Coldest feels-like

0.1 °C

24 January 2016

Sunniest day

12.9 h

17 June 1954

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.7 °C19 July 2025	11.3 °C13 January 2025	25.3 °C	2,061 mm	166
2024	42.0 °C27 April 2024	9.5 °C24 January 2024	26.2 °C	1,670 mm	185
2023	41.5 °C22 June 2023	10.7 °C30 January 2023	26.3 °C	1,064 mm	174
2022	41.1 °C28 June 2022	9.2 °C21 February 2022	25.4 °C	1,605 mm	158
2021	41.9 °C3 June 2021	9.6 °C9 January 2021	25.9 °C	1,424 mm	164
2020	42.0 °C9 July 2020	12.9 °C18 December 2020	26.2 °C	1,347 mm	159
2019	42.3 °C19 May 2019	11.6 °C1 January 2019	26.6 °C	1,534 mm	175
2018	42.2 °C1 July 2018	10.5 °C30 January 2018	25.5 °C	1,868 mm	154
2017	41.7 °C4 June 2017	12.4 °C18 December 2017	25.6 °C	1,352 mm	159
2016	42.5 °C13 June 2016	6.6 °C24 January 2016	25.8 °C	1,534 mm	183
2015	43.1 °C29 May 2015	11.9 °C11 January 2015	26.2 °C	1,176 mm	179
2014	40.9 °C22 May 2014	10.0 °C13 February 2014	25.3 °C	1,156 mm	162
2013	41.1 °C9 June 2013	10.1 °C20 December 2013	25.1 °C	2,057 mm	155
2012	40.6 °C3 May 2012	10.2 °C26 January 2012	25.2 °C	1,239 mm	162
2011	39.5 °C16 June 2011	8.4 °C11 January 2011	23.8 °C	1,991 mm	123
2010	42.3 °C5 July 2010	11.1 °C19 February 2010	25.8 °C	1,777 mm	164
2009	39.3 °C21 June 2009	9.8 °C11 January 2009	25.4 °C	1,205 mm	165
2008	39.0 °C29 May 2008	7.9 °C2 February 2008	24.6 °C	1,513 mm	157
2007	42.4 °C9 June 2007	11.3 °C29 January 2007	25.3 °C	1,427 mm	147
2006	41.7 °C9 June 2006	11.0 °C7 January 2006	25.5 °C	1,181 mm	171
2005	40.6 °C27 May 2005	9.0 °C1 January 2005	24.9 °C	1,614 mm	154
2004	40.1 °C3 July 2004	9.9 °C7 February 2004	24.6 °C	1,250 mm	131
2003	40.8 °C6 May 2003	9.8 °C7 January 2003	25.6 °C	1,045 mm	172
2002	37.8 °C22 June 2002	9.3 °C27 December 2002	24.9 °C	1,334 mm	155
2001	38.5 °C21 April 2001	11.4 °C24 December 2001	24.7 °C	1,490 mm	143
2000	37.9 °C13 August 2000	10.2 °C1 February 2000	24.6 °C	1,591 mm	136
1999	40.0 °C22 July 1999	7.7 °C24 December 1999	25.0 °C	1,045 mm	157
1998	42.1 °C16 June 1998	11.3 °C5 February 1998	26.1 °C	788 mm	183
1997	40.3 °C9 June 1997	12.4 °C12 January 1997	25.1 °C	1,042 mm	157
1996	39.4 °C10 July 1996	6.7 °C21 February 1996	24.4 °C	1,889 mm	145
1995	39.7 °C23 June 1995	10.7 °C1 February 1995	24.5 °C	1,270 mm	137
1994	40.4 °C3 May 1994	10.8 °C21 January 1994	24.8 °C	1,526 mm	142
1993	40.5 °C14 June 1993	9.4 °C31 January 1993	25.0 °C	1,018 mm	155
1992	41.4 °C24 June 1992	11.6 °C15 January 1992	24.6 °C	1,184 mm	150
1991	40.0 °C15 June 1991	8.1 °C28 December 1991	25.3 °C	1,338 mm	158
1990	40.9 °C22 April 1990	10.3 °C1 February 1990	25.1 °C	1,656 mm	151
1989	39.2 °C21 April 1989	10.1 °C16 January 1989	24.5 °C	1,770 mm	146
1988	41.0 °C25 May 1988	9.7 °C19 February 1988	25.0 °C	1,498 mm	145
1987	41.4 °C25 June 1987	11.3 °C8 December 1987	25.6 °C	1,423 mm	176
1986	41.1 °C2 July 1986	8.0 °C1 March 1986	24.7 °C	1,334 mm	152
1985	40.8 °C10 June 1985	11.5 °C10 January 1985	24.5 °C	1,356 mm	138
1984	41.2 °C26 July 1984	9.5 °C10 January 1984	24.5 °C	1,246 mm	149
1983	41.7 °C19 June 1983	8.2 °C22 January 1983	24.8 °C	1,497 mm	168
1982	41.5 °C12 May 1982	8.8 °C29 December 1982	24.8 °C	1,712 mm	140
1981	39.7 °C14 May 1981	10.4 °C21 December 1981	25.0 °C	1,562 mm	167
1980	40.5 °C24 April 1980	8.6 °C9 February 1980	25.1 °C	1,425 mm	142
1979	40.2 °C30 July 1979	10.7 °C1 February 1979	25.1 °C	1,220 mm	153
1978	38.9 °C17 July 1978	11.1 °C18 January 1978	24.5 °C	1,851 mm	134
1977	41.2 °C7 June 1977	8.8 °C4 January 1977	24.5 °C	1,157 mm	145
1976	39.2 °C29 June 1976	10.0 °C13 January 1976	24.1 °C	1,314 mm	145
1975	39.5 °C28 April 1975	7.4 °C14 December 1975	24.4 °C	1,624 mm	147
1974	40.7 °C16 July 1974	7.3 °C2 January 1974	24.6 °C	1,678 mm	153
1973	42.7 °C23 June 1973	10.7 °C27 December 1973	25.5 °C	2,175 mm	162
1972	41.6 °C23 June 1972	9.5 °C9 February 1972	24.8 °C	1,600 mm	157
1971	40.6 °C11 May 1971	9.1 °C31 January 1971	24.3 °C	1,505 mm	144
1970	39.8 °C9 May 1970	11.1 °C19 January 1970	24.6 °C	1,361 mm	139
1969	42.6 °C20 May 1969	10.3 °C6 February 1969	25.2 °C	926 mm	178
1968	41.7 °C2 July 1968	9.0 °C13 February 1968	24.9 °C	1,357 mm	147
1967	41.4 °C13 July 1967	8.7 °C11 January 1967	24.3 °C	1,189 mm	132
1966	40.0 °C26 April 1966	10.1 °C27 December 1966	25.0 °C	1,415 mm	148
1965	40.6 °C13 May 1965	8.8 °C18 December 1965	24.8 °C	1,337 mm	149
1964	41.3 °C31 July 1964	9.0 °C25 February 1964	24.4 °C	1,869 mm	143
1963	38.6 °C18 July 1963	8.1 °C16 January 1963	24.2 °C	1,720 mm	139
1962	39.8 °C29 May 1962	9.5 °C28 January 1962	24.2 °C	1,472 mm	141
1961	38.7 °C14 July 1961	9.1 °C17 January 1961	24.7 °C	1,729 mm	130
1960	39.5 °C27 April 1960	9.5 °C3 January 1960	24.8 °C	1,648 mm	154
1959	40.6 °C12 June 1959	9.9 °C11 January 1959	24.8 °C	1,271 mm	140
1958	40.1 °C23 April 1958	7.5 °C1 February 1958	24.5 °C	1,242 mm	154
1957	41.8 °C14 May 1957	8.1 °C13 February 1957	24.5 °C	1,502 mm	146
1956	40.0 °C19 April 1956	9.2 °C8 January 1956	24.4 °C	1,361 mm	153
1955	40.1 °C15 April 1955	6.1 °C12 January 1955	24.5 °C	1,020 mm	137
1954	42.5 °C18 June 1954	11.0 °C17 December 1954	25.5 °C	1,119 mm	159
1953	40.7 °C14 July 1953	12.7 °C7 January 1953	25.2 °C	1,849 mm	156
1952	42.0 °C11 July 1952	8.6 °C20 February 1952	25.6 °C	1,831 mm	166
1951	41.0 °C10 April 1951	8.8 °C14 January 1951	25.1 °C	1,348 mm	158
1950	40.7 °C21 April 1950	11.6 °C17 December 1950	25.3 °C	1,362 mm	158
1949	41.5 °C14 June 1949	9.4 °C8 January 1949	25.4 °C	903 mm	155
1948	41.0 °C17 June 1948	9.9 °C27 January 1948	25.0 °C	1,190 mm	143
1947	39.5 °C30 July 1947	10.0 °C20 December 1947	24.4 °C	1,157 mm	136
1946	40.6 °C17 July 1946	10.1 °C8 January 1946	25.7 °C	814 mm	166
1945	38.9 °C14 July 1945	9.0 °C9 February 1945	23.8 °C	878 mm	121
1944	38.6 °C21 July 1944	8.4 °C21 December 1944	24.4 °C	1,472 mm	137
1943	39.6 °C17 July 1943	10.2 °C21 November 1943	24.3 °C	1,126 mm	136
1942	38.4 °C25 May 1942	10.3 °C13 February 1942	24.5 °C	1,161 mm	130
1941	38.1 °C14 July 1941	10.9 °C1 February 1941	24.7 °C	1,590 mm	131
1940	39.1 °C16 May 1940	9.6 °C23 January 1940	24.3 °C	1,230 mm	121

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

28.3 °C

+0.1 °C

Hot days (≥ 30 °C)

166 d/yr

+14

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2061 mm

+646 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	22.0 °C	+1.1 °C	12 mm	-12 mm
Feb	20.8 °C	-1.2 °C	24 mm	+4 mm
Mar	24.2 °C	-1.1 °C	18 mm	-14 mm
Apr	29.4 °C	-0.2 °C	60 mm	+10 mm
May	32.4 °C	-0.6 °C	148 mm	+32 mm
Jun	34.9 °C	+0.4 °C	87 mm	-52 mm
Jul	33.5 °C	-1.2 °C	409 mm	+266 mm
Aug	33.4 °C	+0.5 °C	487 mm	+243 mm
Sep	32.1 °C	+1.4 °C	494 mm	+181 mm
Oct	28.9 °C	+0.8 °C	139 mm	-100 mm
Nov	24.5 °C	-0.7 °C	128 mm	+55 mm
Dec	23.6 °C	+1.6 °C	57 mm	+31 mm

The year's extremes

Hottest day

39.7 °C

19 Jul 2025

Coldest day

11.3 °C

13 Jan 2025

Wettest day

192.4 mm

22 Jul 2025

Windiest day

61.4 km/h

29 Sep 2025

Strongest gust

127.4 km/h

29 Sep 2025

Hottest feels-like

46.1 °C

9 May 2025

Coldest feels-like

9.0 °C

13 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 Nghi Sơn?

Nghi Sơn has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.9 °C and it receives 1,415 mm of precipitation per year.

What is the hottest day ever recorded in Nghi Sơn?

The hottest day measured in Nghi Sơn between 1940 and 2025 was 29 May 2015, reaching 43.1 °C.

What is the coldest day in Nghi Sơn?

The coldest day measured in Nghi Sơn between 1940 and 2025 was 12 January 1955, at 6.1 °C.

Does it snow in Nghi Sơn?

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

Has the climate of Nghi Sơn warmed?

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

What is the wettest day in Nghi Sơn?

The wettest day measured in Nghi Sơn between 1940 and 2025 was 1 September 1973, with 394 mm of rain in 24 hours.

What was the windiest day in Nghi Sơn?

The windiest day measured in Nghi Sơn between 1940 and 2025 was 22 August 1987, with winds reaching 66.7 km/h.

What is the warmest month in Nghi Sơn?

The warmest month in Nghi Sơn is July (30.9 °C on average); the coldest is January (18.0 °C).

How much does it rain in Nghi Sơn?

Nghi Sơn receives on average 1,415 mm of precipitation per year, spread over about 133 rainy days.

Is it sunny in Nghi Sơn?

Nghi Sơn gets on average 8.0 hours of sunshine per day, roughly 2,920 hours per year over 1940-2025.

Are there tropical nights in Nghi Sơn?

Yes: Nghi Sơn has on average 250 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Nghi Sơn?

In Nghi Sơn, between 1940 and 2025, the highest apparent temperature reached 49.0 °C on 20 May 2019, and the lowest was 0.1 °C on 24 January 2016.

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