Yên Bái climate — normals and trends

Q: What is the climate of Yên Bái?

Yên Bái has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.5 °C and it receives 2,311 mm of precipitation per year.

Q: What is the hottest day ever recorded in Yên Bái?

The hottest day measured in Yên Bái between 1940 and 2025 was 6 May 2003, reaching 41.1 °C.

Q: What is the coldest day in Yên Bái?

The coldest day measured in Yên Bái between 1940 and 2025 was 16 January 1967, at 5.6 °C.

Q: Does it snow in Yên Bái?

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

Q: Has the climate of Yên Bái warmed?

Yes: Yên Bái warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Yên Bái?

The wettest day measured in Yên Bái between 1940 and 2025 was 30 August 1987, with 216 mm of rain in 24 hours.

Q: What was the windiest day in Yên Bái?

The windiest day measured in Yên Bái between 1940 and 2025 was 23 July 1980, with winds reaching 34.2 km/h.

Q: What is the warmest month in Yên Bái?

The warmest month in Yên Bái is July (28.5 °C on average); the coldest is January (16.2 °C).

Q: How much does it rain in Yên Bái?

Yên Bái receives on average 2,311 mm of precipitation per year, spread over about 194 rainy days.

Q: Is it sunny in Yên Bái?

Yên Bái gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.

Yên Bái (Vietnam) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 23.5 °C and it receives 2,311 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 (16.2 °C). Rainfall peaks in August.

Yên Bái averages 0 frost days, 135 hot days (≥ 30 °C) and 194 rainy days per year.

Yên Bái 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 41.1 °C (on 6 May 2003) and the coldest 5.6 °C (on 16 January 1967).

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

Yên BáiLao Cai

coords: 21.72°, 104.91°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJulyColdest monthJanuaryWettest monthAugustDriest monthDecember

Mean daily temperature

23.5°C

Average daily high

27.0°C

Average daily low

20.9°C

Annual rainfall

2,311mm

Sunshine / day

6.9h

Mean relative humidity

83%

Average peak wind

8.0km/h

Seasonal range

12.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

135 d/yr

Rainy days (≥ 1 mm)

194 d/yr

Annual snowfall

0.0 cm

Average feels-like high

31.1 °C

Average feels-like low

24.2 °C

Average peak gust

20.7 km/h

Tropical nights (≥ 20 °C)

224 d/yr

Solar radiation

13.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.5 °C

since 1940

+0.2 °C per decade · r² = 0.57 · 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

41.1 °C

6 May 2003

Coldest day

5.6 °C

16 January 1967

Wettest day

216 mm

30 August 1987

Windiest day

34.2 km/h

23 July 1980

Strongest gust

91.8 km/h

23 July 1980

Hottest feels-like

48.1 °C

2 June 1958

Coldest feels-like

3.1 °C

16 January 1967

Sunniest day

13.3 h

14 June 1970

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.4 °C4 August 2025	9.7 °C13 January 2025	24.2 °C	2,818 mm	150
2024	39.0 °C26 July 2024	9.4 °C25 January 2024	24.8 °C	2,754 mm	178
2023	37.7 °C18 May 2023	8.5 °C31 January 2023	24.7 °C	2,162 mm	168
2022	37.2 °C2 July 2022	9.9 °C21 February 2022	24.0 °C	2,339 mm	149
2021	39.3 °C3 June 2021	8.6 °C9 January 2021	24.4 °C	2,080 mm	161
2020	37.7 °C22 June 2020	11.7 °C31 January 2020	24.2 °C	2,426 mm	146
2019	38.3 °C19 May 2019	9.8 °C8 December 2019	24.7 °C	2,337 mm	153
2018	38.1 °C6 July 2018	9.6 °C31 January 2018	24.3 °C	2,465 mm	148
2017	39.2 °C4 June 2017	9.2 °C20 December 2017	24.2 °C	2,608 mm	136
2016	37.5 °C2 June 2016	6.7 °C27 January 2016	24.6 °C	1,977 mm	173
2015	37.9 °C29 May 2015	10.5 °C15 January 2015	24.8 °C	2,162 mm	176
2014	37.8 °C24 May 2014	7.7 °C23 January 2014	24.0 °C	2,319 mm	160
2013	37.7 °C16 May 2013	8.0 °C20 December 2013	23.9 °C	2,250 mm	150
2012	38.2 °C4 May 2012	8.9 °C26 January 2012	23.8 °C	2,237 mm	158
2011	36.5 °C31 August 2011	8.6 °C17 January 2011	22.9 °C	1,820 mm	131
2010	37.6 °C21 May 2010	9.7 °C17 December 2010	24.4 °C	2,346 mm	157
2009	37.1 °C9 August 2009	9.6 °C11 January 2009	24.2 °C	1,733 mm	161
2008	37.4 °C8 April 2008	7.6 °C2 February 2008	23.4 °C	2,624 mm	143
2007	37.2 °C24 May 2007	8.7 °C29 January 2007	24.0 °C	2,269 mm	144
2006	38.5 °C12 April 2006	9.1 °C23 December 2006	24.1 °C	2,184 mm	150
2005	37.6 °C17 May 2005	7.8 °C3 January 2005	23.7 °C	2,181 mm	151
2004	37.2 °C3 July 2004	8.4 °C9 February 2004	23.7 °C	1,729 mm	146
2003	41.1 °C6 May 2003	8.8 °C7 January 2003	24.5 °C	1,840 mm	165
2002	36.3 °C1 June 2002	10.2 °C28 December 2002	24.2 °C	2,172 mm	161
2001	37.5 °C6 July 2001	9.2 °C25 December 2001	24.0 °C	2,125 mm	142
2000	35.8 °C18 July 2000	9.8 °C2 February 2000	23.8 °C	2,060 mm	136
1999	35.8 °C28 July 1999	6.6 °C23 December 1999	23.8 °C	2,150 mm	142
1998	37.7 °C15 June 1998	10.7 °C20 January 1998	24.5 °C	2,185 mm	166
1997	37.3 °C8 June 1997	11.3 °C12 January 1997	23.7 °C	2,648 mm	138
1996	37.7 °C17 March 1996	8.5 °C22 February 1996	23.3 °C	2,363 mm	134
1995	37.3 °C25 May 1995	9.3 °C31 December 1995	23.4 °C	2,332 mm	134
1994	39.1 °C3 May 1994	10.1 °C22 January 1994	23.8 °C	2,806 mm	120
1993	36.5 °C1 June 1993	7.4 °C31 January 1993	23.6 °C	2,183 mm	144
1992	37.0 °C21 April 1992	10.1 °C15 January 1992	23.4 °C	2,095 mm	132
1991	36.3 °C24 May 1991	9.3 °C30 December 1991	23.9 °C	2,340 mm	144
1990	38.2 °C21 August 1990	7.9 °C2 February 1990	23.8 °C	2,394 mm	129
1989	37.0 °C18 June 1989	9.8 °C4 February 1989	23.4 °C	2,320 mm	136
1988	37.8 °C21 May 1988	9.0 °C19 February 1988	23.4 °C	2,231 mm	130
1987	37.5 °C24 June 1987	9.2 °C17 December 1987	24.3 °C	2,394 mm	160
1986	38.0 °C2 July 1986	8.2 °C11 January 1986	23.5 °C	2,620 mm	128
1985	36.8 °C6 May 1985	9.0 °C11 January 1985	23.1 °C	2,343 mm	145
1984	38.3 °C4 April 1984	8.8 °C1 February 1984	23.1 °C	2,181 mm	131
1983	38.1 °C20 June 1983	7.1 °C29 December 1983	23.3 °C	2,377 mm	153
1982	37.1 °C12 May 1982	7.3 °C27 December 1982	23.5 °C	2,478 mm	131
1981	37.3 °C25 August 1981	10.2 °C12 January 1981	23.8 °C	3,091 mm	151
1980	38.0 °C22 April 1980	8.4 °C6 February 1980	23.7 °C	2,420 mm	138
1979	36.0 °C15 July 1979	10.3 °C16 January 1979	23.7 °C	2,106 mm	148
1978	36.7 °C25 June 1978	9.8 °C17 December 1978	23.3 °C	3,115 mm	129
1977	37.2 °C31 May 1977	6.3 °C1 February 1977	23.3 °C	2,071 mm	140
1976	36.1 °C16 June 1976	7.3 °C1 January 1976	22.9 °C	2,326 mm	125
1975	36.0 °C17 August 1975	5.8 °C25 December 1975	23.3 °C	2,778 mm	140
1974	37.7 °C8 May 1974	6.0 °C1 January 1974	23.3 °C	2,309 mm	144
1973	37.9 °C23 June 1973	6.1 °C31 December 1973	24.1 °C	2,508 mm	150
1972	37.9 °C11 May 1972	8.8 °C11 February 1972	23.6 °C	2,651 mm	156
1971	37.7 °C22 July 1971	6.6 °C5 January 1971	23.0 °C	2,622 mm	118
1970	36.5 °C9 May 1970	9.0 °C31 January 1970	23.3 °C	2,486 mm	132
1969	38.6 °C13 May 1969	8.7 °C7 February 1969	23.7 °C	2,075 mm	165
1968	36.9 °C26 July 1968	6.1 °C14 February 1968	23.4 °C	2,418 mm	129
1967	37.5 °C30 August 1967	5.6 °C16 January 1967	23.3 °C	1,795 mm	138
1966	36.3 °C12 May 1966	8.3 °C1 January 1966	22.9 °C	2,161 mm	96
1965	35.6 °C15 July 1965	8.1 °C17 December 1965	22.9 °C	2,302 mm	98
1964	36.7 °C8 August 1964	8.8 °C25 February 1964	23.1 °C	2,770 mm	123
1963	36.4 °C6 September 1963	7.0 °C16 January 1963	23.3 °C	2,584 mm	137
1962	37.2 °C28 May 1962	8.8 °C4 January 1962	23.3 °C	1,953 mm	142
1961	37.5 °C13 July 1961	6.6 °C17 January 1961	23.6 °C	2,878 mm	135
1960	40.2 °C5 May 1960	8.1 °C27 January 1960	23.6 °C	2,584 mm	134
1959	36.7 °C16 June 1959	8.9 °C6 January 1959	23.4 °C	2,264 mm	136
1958	38.9 °C10 May 1958	7.2 °C1 February 1958	23.5 °C	2,205 mm	144
1957	37.9 °C13 May 1957	7.0 °C14 February 1957	23.4 °C	2,486 mm	142
1956	36.6 °C4 September 1956	6.2 °C10 January 1956	22.9 °C	2,097 mm	122
1955	37.1 °C16 April 1955	6.3 °C13 January 1955	22.9 °C	2,200 mm	111
1954	37.4 °C23 July 1954	9.1 °C17 December 1954	23.4 °C	1,978 mm	123
1953	36.6 °C21 May 1953	11.2 °C11 December 1953	23.5 °C	2,171 mm	125
1952	36.5 °C3 May 1952	7.7 °C20 February 1952	23.7 °C	2,473 mm	119
1951	35.6 °C2 August 1951	8.5 °C14 January 1951	23.0 °C	2,452 mm	105
1950	35.6 °C2 May 1950	9.9 °C19 February 1950	23.1 °C	2,152 mm	114
1949	37.7 °C13 June 1949	6.0 °C10 January 1949	23.6 °C	1,965 mm	121
1948	34.6 °C1 July 1948	8.1 °C27 January 1948	23.0 °C	2,021 mm	104
1947	35.8 °C14 June 1947	7.7 °C21 December 1947	22.7 °C	1,986 mm	90
1946	39.1 °C20 August 1946	9.0 °C11 January 1946	24.0 °C	1,245 mm	141
1945	33.9 °C21 June 1945	7.2 °C10 February 1945	21.8 °C	2,392 mm	75
1944	36.1 °C7 April 1944	5.8 °C20 December 1944	22.7 °C	2,516 mm	86
1943	34.6 °C29 May 1943	7.0 °C13 January 1943	22.3 °C	2,210 mm	76
1942	34.1 °C24 May 1942	8.4 °C14 February 1942	22.6 °C	2,828 mm	59
1941	33.9 °C13 July 1941	10.3 °C1 February 1941	22.9 °C	2,430 mm	89
1940	34.7 °C15 May 1940	6.4 °C25 January 1940	22.5 °C	2,217 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

27.6 °C

+0.6 °C

Hot days (≥ 30 °C)

150 d/yr

+15

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2818 mm

+507 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	21.3 °C	+1.9 °C	20 mm	-21 mm
Feb	19.0 °C	-1.8 °C	59 mm	+19 mm
Mar	24.8 °C	+0.3 °C	45 mm	-28 mm
Apr	29.2 °C	+0.7 °C	170 mm	+27 mm
May	30.6 °C	-0.5 °C	426 mm	+119 mm
Jun	32.1 °C	+0.1 °C	605 mm	+219 mm
Jul	33.4 °C	+1.3 °C	363 mm	-9 mm
Aug	32.2 °C	+0.6 °C	416 mm	+7 mm
Sep	31.9 °C	+1.2 °C	399 mm	+118 mm
Oct	29.2 °C	+1.0 °C	171 mm	+20 mm
Nov	24.3 °C	-0.4 °C	80 mm	+12 mm
Dec	22.6 °C	+1.7 °C	63 mm	+24 mm

The year's extremes

Hottest day

38.4 °C

4 Aug 2025

Coldest day

9.7 °C

13 Jan 2025

Wettest day

98.8 mm

29 Sep 2025

Windiest day

20.1 km/h

29 Sep 2025

Strongest gust

64.1 km/h

29 Sep 2025

Hottest feels-like

47.8 °C

4 Aug 2025

Coldest feels-like

8.9 °C

13 Jan 2025

Sunniest day

12.8 h

14 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 Yên Bái?

Yên Bái has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 23.5 °C and it receives 2,311 mm of precipitation per year.

What is the hottest day ever recorded in Yên Bái?

The hottest day measured in Yên Bái between 1940 and 2025 was 6 May 2003, reaching 41.1 °C.

What is the coldest day in Yên Bái?

The coldest day measured in Yên Bái between 1940 and 2025 was 16 January 1967, at 5.6 °C.

Does it snow in Yên Bái?

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

Has the climate of Yên Bái warmed?

Yes: Yên Bái warmed by +1.5 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Yên Bái?

The wettest day measured in Yên Bái between 1940 and 2025 was 30 August 1987, with 216 mm of rain in 24 hours.

What was the windiest day in Yên Bái?

The windiest day measured in Yên Bái between 1940 and 2025 was 23 July 1980, with winds reaching 34.2 km/h.

What is the warmest month in Yên Bái?

The warmest month in Yên Bái is July (28.5 °C on average); the coldest is January (16.2 °C).

How much does it rain in Yên Bái?

Yên Bái receives on average 2,311 mm of precipitation per year, spread over about 194 rainy days.

Is it sunny in Yên Bái?

Yên Bái gets on average 6.9 hours of sunshine per day, roughly 2,519 hours per year over 1940-2025.

Are there tropical nights in Yên Bái?

Yes: Yên Bái has on average 224 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Yên Bái?

In Yên Bái, between 1940 and 2025, the highest apparent temperature reached 48.1 °C on 2 June 1958, and the lowest was 3.1 °C on 16 January 1967.

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