Muang Xay climate — normals and trends

Q: What is the climate of Muang Xay?

Muang Xay has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,849 mm of precipitation per year.

Q: What is the hottest day ever recorded in Muang Xay?

The hottest day measured in Muang Xay between 1940 and 2025 was 19 May 2019, reaching 38.4 °C.

Q: What is the coldest day in Muang Xay?

The coldest day measured in Muang Xay between 1940 and 2025 was 31 December 1975, at 2.0 °C.

Q: Does it snow in Muang Xay?

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

Q: Has the climate of Muang Xay warmed?

Yes: Muang Xay warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Muang Xay?

The wettest day measured in Muang Xay between 1940 and 2025 was 23 September 1962, with 145 mm of rain in 24 hours.

Q: What was the windiest day in Muang Xay?

The windiest day measured in Muang Xay between 1940 and 2025 was 4 September 1951, with winds reaching 24.0 km/h.

Q: What is the warmest month in Muang Xay?

The warmest month in Muang Xay is June (24.4 °C on average); the coldest is December (16.3 °C).

Q: How much does it rain in Muang Xay?

Muang Xay receives on average 1,849 mm of precipitation per year, spread over about 192 rainy days.

Q: Is it sunny in Muang Xay?

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

Muang Xay (Laos) has a humid subtropical, dry winter climate (Cwa) under the Köppen-Geiger classification. Its mean annual temperature is 21.3 °C and it receives 1,849 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 June (24.4 °C on average) and the coldest is December (16.3 °C). Rainfall peaks in August.

Muang Xay averages 0 frost days, 66 hot days (≥ 30 °C) and 192 rainy days per year.

Muang Xay has warmed by +1.8 °C between 1940 and 2025, or +0.21 °C per decade. This trend is statistically significant.

The hottest day of the period reached 38.4 °C (on 19 May 2019) and the coldest 2.0 °C (on 31 December 1975).

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

Muang XayOudômxai

coords: 20.69°, 101.98°
period: 1940–2025 · 86 yrs

CwaHumid subtropical, dry winterWarmest monthJuneColdest monthDecemberWettest monthAugustDriest monthDecember

Mean daily temperature

21.3°C

Average daily high

26.7°C

Average daily low

17.5°C

Annual rainfall

1,849mm

Sunshine / day

9.0h

Mean relative humidity

79%

Average peak wind

8.9km/h

Seasonal range

8.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

66 d/yr

Rainy days (≥ 1 mm)

192 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.1 °C

Average feels-like low

19.1 °C

Average peak gust

31.0 km/h

Tropical nights (≥ 20 °C)

142 d/yr

Solar radiation

16.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.8 °C

since 1940

+0.2 °C per decade · r² = 0.72 · 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

19 May 2019

Coldest day

2.0 °C

31 December 1975

Wettest day

145 mm

23 September 1962

Windiest day

24.0 km/h

4 September 1951

Strongest gust

76.3 km/h

4 September 1951

Hottest feels-like

40.6 °C

12 July 2015

Coldest feels-like

-1.2 °C

31 December 1973

Sunniest day

12.9 h

15 June 2013

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	34.3 °C25 April 2025	6.2 °C29 November 2025	21.8 °C	1,880 mm	101
2024	37.2 °C1 May 2024	9.8 °C25 January 2024	22.9 °C	1,900 mm	124
2023	36.8 °C19 April 2023	6.5 °C30 January 2023	22.7 °C	1,520 mm	125
2022	34.0 °C28 April 2022	7.3 °C19 December 2022	22.0 °C	1,881 mm	89
2021	35.0 °C23 April 2021	5.6 °C12 January 2021	22.1 °C	1,692 mm	124
2020	36.2 °C22 May 2020	8.3 °C23 December 2020	22.5 °C	1,546 mm	122
2019	38.4 °C19 May 2019	3.9 °C8 December 2019	23.0 °C	970 mm	178
2018	34.1 °C13 April 2018	6.9 °C7 February 2018	21.7 °C	2,226 mm	59
2017	34.8 °C10 April 2017	5.4 °C21 December 2017	22.1 °C	1,962 mm	96
2016	36.7 °C27 April 2016	2.7 °C25 January 2016	22.1 °C	1,621 mm	113
2015	35.0 °C6 May 2015	6.9 °C13 January 2015	22.3 °C	1,875 mm	126
2014	35.6 °C15 May 2014	4.1 °C23 January 2014	22.2 °C	1,709 mm	113
2013	34.7 °C29 March 2013	5.6 °C19 December 2013	22.0 °C	1,790 mm	111
2012	35.1 °C25 April 2012	7.9 °C16 January 2012	22.4 °C	1,704 mm	83
2011	32.7 °C26 July 2011	8.2 °C26 December 2011	21.4 °C	1,700 mm	55
2010	35.8 °C11 April 2010	10.3 °C17 December 2010	22.5 °C	1,499 mm	127
2009	34.1 °C24 April 2009	6.5 °C14 January 2009	22.1 °C	1,611 mm	97
2008	33.9 °C9 April 2008	5.9 °C1 December 2008	21.3 °C	2,105 mm	50
2007	35.1 °C2 April 2007	7.7 °C29 January 2007	21.8 °C	1,634 mm	72
2006	35.1 °C13 April 2006	6.3 °C23 December 2006	22.1 °C	1,581 mm	82
2005	33.8 °C17 May 2005	7.0 °C20 December 2005	22.0 °C	1,635 mm	83
2004	34.3 °C29 March 2004	7.9 °C9 February 2004	21.4 °C	1,806 mm	61
2003	35.8 °C8 May 2003	7.9 °C7 January 2003	22.0 °C	1,471 mm	81
2002	33.6 °C18 April 2002	8.1 °C27 December 2002	21.7 °C	2,195 mm	58
2001	34.7 °C10 April 2001	6.4 °C26 December 2001	21.8 °C	1,781 mm	47
2000	33.6 °C3 April 2000	7.2 °C1 February 2000	21.4 °C	1,855 mm	50
1999	32.4 °C20 March 1999	2.0 °C25 December 1999	21.5 °C	1,673 mm	55
1998	34.1 °C17 March 1998	9.3 °C15 January 1998	22.4 °C	1,485 mm	92
1997	34.1 °C16 May 1997	7.6 °C25 January 1997	21.7 °C	1,847 mm	55
1996	32.9 °C20 March 1996	5.3 °C1 January 1996	21.3 °C	2,092 mm	38
1995	34.1 °C22 April 1995	5.6 °C31 December 1995	21.4 °C	1,872 mm	66
1994	33.9 °C10 April 1994	9.7 °C23 January 1994	21.5 °C	2,570 mm	46
1993	33.4 °C5 June 1993	4.4 °C27 December 1993	21.3 °C	1,738 mm	63
1992	35.6 °C9 May 1992	7.9 °C6 January 1992	21.4 °C	1,623 mm	102
1991	35.1 °C17 April 1991	8.7 °C29 December 1991	21.6 °C	1,898 mm	70
1990	36.1 °C23 April 1990	7.9 °C3 December 1990	21.4 °C	2,216 mm	53
1989	35.7 °C21 April 1989	6.3 °C9 January 1989	21.3 °C	1,817 mm	69
1988	35.2 °C7 April 1988	8.7 °C18 December 1988	21.6 °C	1,747 mm	76
1987	35.0 °C26 May 1987	5.3 °C24 December 1987	21.6 °C	1,791 mm	79
1986	34.3 °C31 March 1986	4.7 °C2 March 1986	21.3 °C	1,973 mm	63
1985	33.7 °C7 April 1985	5.3 °C24 December 1985	21.2 °C	2,026 mm	30
1984	35.2 °C21 April 1984	6.6 °C9 January 1984	21.4 °C	1,910 mm	62
1983	35.4 °C18 April 1983	5.5 °C5 December 1983	21.3 °C	2,008 mm	102
1982	33.8 °C3 May 1982	4.0 °C29 December 1982	21.2 °C	2,110 mm	71
1981	34.7 °C8 April 1981	8.2 °C2 December 1981	21.2 °C	2,475 mm	60
1980	35.5 °C30 April 1980	7.6 °C31 January 1980	21.6 °C	1,829 mm	72
1979	35.1 °C13 May 1979	8.3 °C14 February 1979	21.4 °C	1,792 mm	79
1978	33.5 °C1 July 1978	6.3 °C17 December 1978	20.8 °C	2,357 mm	53
1977	33.5 °C17 April 1977	7.7 °C19 February 1977	20.7 °C	2,191 mm	58
1976	33.2 °C16 April 1976	3.4 °C1 January 1976	20.7 °C	1,955 mm	46
1975	35.3 °C29 April 1975	2.0 °C31 December 1975	20.8 °C	1,894 mm	58
1974	32.3 °C9 March 1974	2.4 °C5 January 1974	20.7 °C	1,936 mm	41
1973	34.6 °C9 April 1973	2.4 °C31 December 1973	21.3 °C	2,133 mm	64
1972	35.3 °C13 May 1972	7.3 °C14 December 1972	21.0 °C	2,151 mm	55
1971	33.6 °C18 May 1971	3.7 °C6 January 1971	20.3 °C	2,177 mm	43
1970	33.7 °C30 April 1970	7.5 °C21 December 1970	21.1 °C	2,170 mm	60
1969	35.9 °C4 May 1969	7.2 °C6 February 1969	21.3 °C	2,058 mm	83
1968	34.3 °C28 May 1968	6.6 °C20 January 1968	21.0 °C	2,038 mm	48
1967	34.3 °C3 April 1967	5.2 °C17 January 1967	20.9 °C	1,656 mm	65
1966	35.6 °C2 May 1966	8.4 °C3 December 1966	21.4 °C	1,768 mm	44
1965	35.5 °C15 May 1965	6.7 °C18 December 1965	20.8 °C	2,008 mm	54
1964	32.4 °C11 April 1964	6.0 °C19 December 1964	20.9 °C	1,854 mm	40
1963	35.7 °C25 April 1963	5.1 °C26 January 1963	20.8 °C	1,915 mm	63
1962	33.7 °C8 May 1962	7.0 °C6 December 1962	21.0 °C	1,673 mm	62
1961	33.1 °C23 March 1961	4.3 °C18 January 1961	21.2 °C	2,009 mm	51
1960	38.1 °C29 April 1960	6.6 °C3 January 1960	21.6 °C	1,746 mm	83
1959	37.0 °C11 April 1959	7.6 °C2 March 1959	21.4 °C	1,688 mm	60
1958	36.1 °C25 April 1958	6.7 °C18 December 1958	21.2 °C	1,856 mm	83
1957	35.9 °C13 May 1957	7.4 °C7 February 1957	21.5 °C	2,036 mm	78
1956	36.0 °C19 April 1956	5.9 °C28 November 1956	21.1 °C	1,610 mm	68
1955	34.4 °C18 April 1955	3.1 °C12 January 1955	20.7 °C	1,834 mm	40
1954	34.6 °C18 April 1954	4.5 °C16 December 1954	21.0 °C	1,427 mm	55
1953	32.4 °C22 May 1953	7.2 °C13 December 1953	20.4 °C	1,790 mm	28
1952	34.4 °C3 May 1952	6.7 °C13 December 1952	21.0 °C	1,936 mm	39
1951	34.7 °C10 April 1951	8.9 °C18 December 1951	20.6 °C	1,990 mm	21
1950	36.8 °C24 April 1950	7.6 °C7 January 1950	21.0 °C	1,745 mm	42
1949	32.2 °C15 June 1949	5.8 °C17 January 1949	20.9 °C	1,836 mm	28
1948	33.5 °C14 March 1948	5.1 °C3 January 1948	20.6 °C	1,636 mm	22
1947	33.8 °C7 May 1947	5.8 °C30 December 1947	20.6 °C	1,634 mm	18
1946	36.0 °C19 March 1946	5.6 °C11 January 1946	20.9 °C	1,231 mm	47
1945	32.3 °C1 April 1945	6.4 °C18 January 1945	20.4 °C	1,883 mm	16
1944	33.8 °C9 April 1944	6.0 °C10 December 1944	20.7 °C	1,835 mm	35
1943	33.9 °C24 March 1943	7.5 °C12 December 1943	20.4 °C	1,943 mm	35
1942	35.0 °C17 April 1942	6.2 °C7 December 1942	20.2 °C	2,085 mm	29
1941	33.0 °C2 March 1941	8.8 °C31 January 1941	20.6 °C	1,956 mm	32
1940	32.3 °C26 April 1940	5.6 °C3 January 1940	20.4 °C	1,703 mm	15

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

27.4 °C

+0.7 °C

Hot days (≥ 30 °C)

101 d/yr

+35

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1880 mm

+31 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	23.4 °C	+0.1 °C	2 mm	-27 mm
Feb	27.0 °C	+1.1 °C	23 mm	-8 mm
Mar	29.4 °C	+0.9 °C	8 mm	-69 mm
Apr	29.6 °C	0.0 °C	106 mm	-51 mm
May	29.2 °C	+0.1 °C	199 mm	-53 mm
Jun	29.4 °C	+1.0 °C	277 mm	+6 mm
Jul	27.4 °C	-0.4 °C	611 mm	+301 mm
Aug	28.8 °C	+1.3 °C	304 mm	-27 mm
Sep	29.0 °C	+1.6 °C	182 mm	-42 mm
Oct	27.5 °C	+1.2 °C	86 mm	-16 mm
Nov	23.8 °C	-0.6 °C	58 mm	+15 mm
Dec	24.0 °C	+1.5 °C	25 mm	+3 mm

The year's extremes

Hottest day

34.3 °C

25 Apr 2025

Coldest day

6.2 °C

29 Nov 2025

Wettest day

74.0 mm

3 Jul 2025

Windiest day

18.3 km/h

1 Jun 2025

Strongest gust

58.3 km/h

1 Jun 2025

Hottest feels-like

38.1 °C

6 Sep 2025

Coldest feels-like

4.6 °C

29 Nov 2025

Sunniest day

12.7 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 Muang Xay?

Muang Xay has a humid subtropical, dry winter climate (Köppen Cwa). Over 1940-2025, the average annual temperature is 21.3 °C and it receives 1,849 mm of precipitation per year.

What is the hottest day ever recorded in Muang Xay?

The hottest day measured in Muang Xay between 1940 and 2025 was 19 May 2019, reaching 38.4 °C.

What is the coldest day in Muang Xay?

The coldest day measured in Muang Xay between 1940 and 2025 was 31 December 1975, at 2.0 °C.

Does it snow in Muang Xay?

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

Has the climate of Muang Xay warmed?

Yes: Muang Xay warmed by +1.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Muang Xay?

The wettest day measured in Muang Xay between 1940 and 2025 was 23 September 1962, with 145 mm of rain in 24 hours.

What was the windiest day in Muang Xay?

The windiest day measured in Muang Xay between 1940 and 2025 was 4 September 1951, with winds reaching 24.0 km/h.

What is the warmest month in Muang Xay?

The warmest month in Muang Xay is June (24.4 °C on average); the coldest is December (16.3 °C).

How much does it rain in Muang Xay?

Muang Xay receives on average 1,849 mm of precipitation per year, spread over about 192 rainy days.

Is it sunny in Muang Xay?

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

Are there tropical nights in Muang Xay?

Yes: Muang Xay has on average 142 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Muang Xay?

In Muang Xay, between 1940 and 2025, the highest apparent temperature reached 40.6 °C on 12 July 2015, and the lowest was -1.2 °C on 31 December 1973.

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