Vang Vieng climate — normals and trends

Q: What is the climate of Vang Vieng?

Vang Vieng has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 2,420 mm of precipitation per year.

Q: What is the hottest day ever recorded in Vang Vieng?

The hottest day measured in Vang Vieng between 1940 and 2025 was 30 April 2024, reaching 38.4 °C.

Q: What is the coldest day in Vang Vieng?

The coldest day measured in Vang Vieng between 1940 and 2025 was 2 January 1974, at 0.6 °C.

Q: Does it snow in Vang Vieng?

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

Q: Has the climate of Vang Vieng warmed?

Yes: Vang Vieng warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Vang Vieng?

The wettest day measured in Vang Vieng between 1940 and 2025 was 25 August 2010, with 217 mm of rain in 24 hours.

Q: What was the windiest day in Vang Vieng?

The windiest day measured in Vang Vieng between 1940 and 2025 was 23 August 1987, with winds reaching 19.2 km/h.

Q: What is the warmest month in Vang Vieng?

The warmest month in Vang Vieng is April (24.4 °C on average); the coldest is January (18.5 °C).

Q: How much does it rain in Vang Vieng?

Vang Vieng receives on average 2,420 mm of precipitation per year, spread over about 209 rainy days.

Q: Is it sunny in Vang Vieng?

Vang Vieng gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

Vang Vieng (Laos) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 22.4 °C and it receives 2,420 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 April (24.4 °C on average) and the coldest is January (18.5 °C). Rainfall peaks in August.

Vang Vieng averages 0 frost days, 59 hot days (≥ 30 °C) and 209 rainy days per year.

Vang Vieng has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.4 °C (on 30 April 2024) and the coldest 0.6 °C (on 2 January 1974).

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

Vang ViengVientiane Province

coords: 18.92°, 102.45°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthAprilColdest monthJanuaryWettest monthAugustDriest monthDecember

Mean daily temperature

22.4°C

Average daily high

27.3°C

Average daily low

18.4°C

Annual rainfall

2,420mm

Sunshine / day

9.0h

Mean relative humidity

82%

Average peak wind

6.7km/h

Seasonal range

5.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

59 d/yr

Rainy days (≥ 1 mm)

209 d/yr

Annual snowfall

0.0 cm

Average feels-like high

30.9 °C

Average feels-like low

20.6 °C

Average peak gust

28.3 km/h

Tropical nights (≥ 20 °C)

170 d/yr

Solar radiation

16.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °C

since 1940

+0.2 °C per decade · r² = 0.77 · 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

38.4 °C

30 April 2024

Coldest day

0.6 °C

2 January 1974

Wettest day

217 mm

25 August 2010

Windiest day

19.2 km/h

23 August 1987

Strongest gust

78.8 km/h

4 September 1951

Hottest feels-like

43.5 °C

7 May 2023

Coldest feels-like

-2.6 °C

2 January 1974

Sunniest day

12.8 h

6 July 2011

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	34.9 °C27 March 2025	5.6 °C13 January 2025	23.0 °C	2,457 mm	98
2024	38.4 °C30 April 2024	11.1 °C26 December 2024	24.1 °C	2,569 mm	140
2023	37.9 °C6 May 2023	7.4 °C30 January 2023	24.0 °C	2,113 mm	143
2022	33.3 °C26 July 2022	9.1 °C20 December 2022	23.3 °C	2,428 mm	90
2021	34.2 °C7 May 2021	7.3 °C3 January 2021	23.4 °C	1,920 mm	122
2020	36.2 °C21 April 2020	10.0 °C23 December 2020	23.7 °C	1,840 mm	130
2019	36.7 °C20 April 2019	3.7 °C8 December 2019	23.7 °C	1,888 mm	151
2018	34.1 °C13 April 2018	10.4 °C14 January 2018	23.0 °C	3,004 mm	74
2017	34.5 °C13 March 2017	4.6 °C21 December 2017	23.4 °C	2,457 mm	99
2016	36.7 °C17 April 2016	5.9 °C8 February 2016	23.4 °C	2,261 mm	113
2015	35.6 °C21 April 2015	7.0 °C14 January 2015	23.2 °C	2,308 mm	118
2014	35.4 °C31 March 2014	4.0 °C23 January 2014	22.8 °C	2,500 mm	88
2013	34.8 °C5 April 2013	7.9 °C23 December 2013	22.9 °C	2,438 mm	104
2012	33.6 °C26 April 2012	8.9 °C16 January 2012	23.3 °C	2,369 mm	74
2011	33.2 °C7 July 2011	8.2 °C27 December 2011	22.3 °C	3,073 mm	41
2010	35.7 °C12 April 2010	10.7 °C19 January 2010	23.3 °C	2,553 mm	98
2009	34.2 °C25 April 2009	5.5 °C16 January 2009	22.8 °C	2,176 mm	81
2008	31.8 °C22 June 2008	6.6 °C2 December 2008	22.4 °C	2,428 mm	35
2007	35.4 °C24 April 2007	7.3 °C30 January 2007	22.9 °C	2,100 mm	75
2006	32.7 °C12 March 2006	6.4 °C23 December 2006	23.0 °C	2,324 mm	58
2005	34.7 °C1 April 2005	7.8 °C20 December 2005	23.0 °C	2,814 mm	82
2004	33.9 °C29 March 2004	8.6 °C13 December 2004	22.4 °C	2,217 mm	62
2003	36.8 °C7 May 2003	8.0 °C22 December 2003	22.8 °C	2,103 mm	80
2002	34.4 °C17 April 2002	8.7 °C5 January 2002	22.9 °C	2,747 mm	67
2001	34.2 °C11 April 2001	8.1 °C20 November 2001	22.7 °C	2,431 mm	48
2000	35.4 °C3 April 2000	8.4 °C26 December 2000	22.6 °C	2,421 mm	46
1999	33.7 °C20 March 1999	1.0 °C26 December 1999	22.5 °C	2,254 mm	41
1998	34.9 °C17 March 1998	8.8 °C13 December 1998	23.4 °C	1,760 mm	104
1997	32.8 °C7 May 1997	10.3 °C10 February 1997	22.4 °C	2,500 mm	42
1996	34.2 °C22 March 1996	4.9 °C1 January 1996	22.2 °C	2,481 mm	31
1995	34.9 °C17 March 1995	5.9 °C30 December 1995	22.5 °C	3,023 mm	60
1994	33.3 °C3 July 1994	9.2 °C1 January 1994	22.3 °C	3,129 mm	34
1993	33.5 °C29 March 1993	4.5 °C27 December 1993	22.2 °C	2,272 mm	45
1992	36.4 °C21 April 1992	6.3 °C3 December 1992	22.2 °C	2,379 mm	84
1991	34.6 °C10 April 1991	10.4 °C24 December 1991	22.7 °C	2,317 mm	76
1990	35.8 °C23 April 1990	7.8 °C6 December 1990	22.5 °C	2,460 mm	52
1989	35.5 °C22 April 1989	7.2 °C9 January 1989	22.3 °C	2,406 mm	57
1988	35.4 °C22 March 1988	9.1 °C13 December 1988	22.7 °C	1,974 mm	73
1987	33.5 °C25 March 1987	6.0 °C8 December 1987	22.4 °C	2,339 mm	55
1986	34.9 °C18 March 1986	5.4 °C8 January 1986	22.2 °C	2,410 mm	56
1985	35.0 °C12 April 1985	6.4 °C24 December 1985	22.3 °C	2,256 mm	31
1984	34.3 °C20 March 1984	7.5 °C10 January 1984	22.2 °C	2,410 mm	50
1983	36.5 °C15 April 1983	5.0 °C29 November 1983	22.3 °C	2,334 mm	75
1982	33.6 °C15 March 1982	5.6 °C22 December 1982	22.1 °C	2,650 mm	47
1981	33.0 °C25 March 1981	8.2 °C25 December 1981	22.3 °C	3,296 mm	51
1980	34.4 °C24 April 1980	9.0 °C29 January 1980	22.5 °C	2,561 mm	60
1979	34.8 °C8 April 1979	9.5 °C12 December 1979	22.5 °C	2,385 mm	68
1978	32.2 °C30 June 1978	7.4 °C16 December 1978	22.1 °C	2,974 mm	33
1977	32.5 °C18 March 1977	8.9 °C19 November 1977	21.8 °C	2,656 mm	41
1976	33.0 °C18 March 1976	3.9 °C1 January 1976	21.7 °C	2,849 mm	38
1975	34.7 °C29 April 1975	1.9 °C30 December 1975	21.9 °C	2,947 mm	33
1974	33.4 °C24 February 1974	0.6 °C2 January 1974	21.9 °C	2,817 mm	24
1973	35.5 °C11 April 1973	2.8 °C29 December 1973	22.5 °C	2,617 mm	78
1972	32.6 °C21 April 1972	7.2 °C20 January 1972	22.0 °C	2,919 mm	34
1971	34.0 °C31 March 1971	4.3 °C6 January 1971	21.9 °C	2,538 mm	53
1970	34.8 °C15 March 1970	10.5 °C2 February 1970	22.7 °C	2,552 mm	56
1969	34.8 °C5 May 1969	8.5 °C11 December 1969	22.4 °C	2,540 mm	65
1968	33.3 °C22 March 1968	8.1 °C20 January 1968	22.1 °C	2,259 mm	35
1967	34.9 °C1 April 1967	4.8 °C18 January 1967	22.0 °C	2,069 mm	52
1966	33.6 °C12 May 1966	8.4 °C3 January 1966	22.3 °C	2,234 mm	20
1965	34.8 °C3 April 1965	6.8 °C18 January 1965	22.0 °C	2,559 mm	40
1964	31.7 °C6 March 1964	6.5 °C20 December 1964	21.8 °C	2,412 mm	26
1963	32.6 °C22 April 1963	5.0 °C28 January 1963	21.6 °C	2,897 mm	37
1962	32.8 °C2 April 1962	5.1 °C6 December 1962	21.8 °C	2,076 mm	41
1961	32.4 °C25 March 1961	3.2 °C19 January 1961	21.8 °C	2,998 mm	28
1960	36.0 °C27 April 1960	6.3 °C3 January 1960	22.4 °C	2,619 mm	54
1959	33.3 °C12 April 1959	8.9 °C14 January 1959	22.2 °C	2,233 mm	44
1958	38.0 °C25 April 1958	5.6 °C14 December 1958	22.2 °C	2,417 mm	79
1957	34.9 °C25 April 1957	9.1 °C6 February 1957	22.3 °C	2,754 mm	63
1956	34.8 °C26 March 1956	5.8 °C28 November 1956	21.9 °C	2,240 mm	48
1955	36.1 °C18 April 1955	2.4 °C12 January 1955	21.6 °C	1,924 mm	46
1954	35.4 °C17 April 1954	5.3 °C18 December 1954	22.0 °C	1,518 mm	49
1953	32.2 °C15 April 1953	6.2 °C13 December 1953	21.6 °C	2,202 mm	19
1952	33.0 °C12 April 1952	6.1 °C13 December 1952	21.7 °C	2,759 mm	25
1951	34.9 °C10 April 1951	9.1 °C18 December 1951	21.5 °C	2,860 mm	28
1950	36.1 °C24 April 1950	8.7 °C5 January 1950	21.8 °C	2,438 mm	39
1949	32.7 °C26 February 1949	5.4 °C17 January 1949	22.0 °C	1,943 mm	42
1948	34.9 °C15 March 1948	3.4 °C3 January 1948	21.4 °C	2,132 mm	20
1947	33.6 °C7 May 1947	4.1 °C31 December 1947	21.6 °C	1,851 mm	19
1946	34.8 °C19 March 1946	4.5 °C11 January 1946	21.7 °C	1,764 mm	52
1945	31.5 °C19 April 1945	6.4 °C18 January 1945	21.6 °C	2,200 mm	19
1944	34.4 °C9 April 1944	5.3 °C22 December 1944	21.8 °C	2,377 mm	45
1943	34.3 °C24 March 1943	7.9 °C20 January 1943	21.5 °C	2,308 mm	26
1942	32.8 °C17 April 1942	8.1 °C14 December 1942	21.2 °C	2,408 mm	29
1941	35.2 °C23 March 1941	10.2 °C31 December 1941	21.6 °C	2,289 mm	31
1940	34.0 °C10 March 1940	5.3 °C3 January 1940	21.2 °C	2,413 mm	16

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

28.2 °C

+0.9 °C

Hot days (≥ 30 °C)

98 d/yr

+39

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2457 mm

+37 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	25.7 °C	+0.7 °C	2 mm	-16 mm
Feb	27.8 °C	+0.9 °C	14 mm	-7 mm
Mar	30.3 °C	+1.2 °C	7 mm	-41 mm
Apr	30.5 °C	+0.9 °C	72 mm	-30 mm
May	29.7 °C	+1.2 °C	203 mm	-56 mm
Jun	29.0 °C	+1.3 °C	420 mm	+11 mm
Jul	27.2 °C	0.0 °C	769 mm	+282 mm
Aug	28.8 °C	+1.7 °C	412 mm	-109 mm
Sep	28.5 °C	+0.9 °C	387 mm	+33 mm
Oct	29.3 °C	+1.7 °C	83 mm	-57 mm
Nov	26.2 °C	-0.3 °C	67 mm	+25 mm
Dec	25.9 °C	+1.1 °C	21 mm	+4 mm

The year's extremes

Hottest day

34.9 °C

27 Mar 2025

Coldest day

5.6 °C

13 Jan 2025

Wettest day

119.4 mm

23 Jul 2025

Windiest day

13.2 km/h

26 Jan 2025

Strongest gust

56.5 km/h

30 Sep 2025

Hottest feels-like

39.9 °C

4 Aug 2025

Coldest feels-like

3.9 °C

13 Jan 2025

Sunniest day

12.2 h

2 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 Vang Vieng?

Vang Vieng has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 22.4 °C and it receives 2,420 mm of precipitation per year.

What is the hottest day ever recorded in Vang Vieng?

The hottest day measured in Vang Vieng between 1940 and 2025 was 30 April 2024, reaching 38.4 °C.

What is the coldest day in Vang Vieng?

The coldest day measured in Vang Vieng between 1940 and 2025 was 2 January 1974, at 0.6 °C.

Does it snow in Vang Vieng?

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

Has the climate of Vang Vieng warmed?

Yes: Vang Vieng warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Vang Vieng?

The wettest day measured in Vang Vieng between 1940 and 2025 was 25 August 2010, with 217 mm of rain in 24 hours.

What was the windiest day in Vang Vieng?

The windiest day measured in Vang Vieng between 1940 and 2025 was 23 August 1987, with winds reaching 19.2 km/h.

What is the warmest month in Vang Vieng?

The warmest month in Vang Vieng is April (24.4 °C on average); the coldest is January (18.5 °C).

How much does it rain in Vang Vieng?

Vang Vieng receives on average 2,420 mm of precipitation per year, spread over about 209 rainy days.

Is it sunny in Vang Vieng?

Vang Vieng gets on average 9.0 hours of sunshine per day, roughly 3,285 hours per year over 1940-2025.

Are there tropical nights in Vang Vieng?

Yes: Vang Vieng has on average 170 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Vang Vieng?

In Vang Vieng, between 1940 and 2025, the highest apparent temperature reached 43.5 °C on 7 May 2023, and the lowest was -2.6 °C on 2 January 1974.

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