Ban Houayxay climate — normals and trends

Q: What is the climate of Ban Houayxay?

Ban Houayxay has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 1,795 mm of precipitation per year.

Q: What is the hottest day ever recorded in Ban Houayxay?

The hottest day measured in Ban Houayxay between 1940 and 2025 was 29 April 1960, reaching 41.1 °C.

Q: What is the coldest day in Ban Houayxay?

The coldest day measured in Ban Houayxay between 1940 and 2025 was 5 January 1974, at 3.7 °C.

Q: Does it snow in Ban Houayxay?

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

Q: Has the climate of Ban Houayxay warmed?

Yes: Ban Houayxay warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ban Houayxay?

The wettest day measured in Ban Houayxay between 1940 and 2025 was 24 July 2010, with 186 mm of rain in 24 hours.

Q: What was the windiest day in Ban Houayxay?

The windiest day measured in Ban Houayxay between 1940 and 2025 was 9 November 1990, with winds reaching 22.7 km/h.

Q: What is the warmest month in Ban Houayxay?

The warmest month in Ban Houayxay is April (27.0 °C on average); the coldest is December (19.5 °C).

Q: How much does it rain in Ban Houayxay?

Ban Houayxay receives on average 1,795 mm of precipitation per year, spread over about 175 rainy days.

Q: Is it sunny in Ban Houayxay?

Ban Houayxay gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Ban Houayxay (Laos) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 24.2 °C and it receives 1,795 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 (27.0 °C on average) and the coldest is December (19.5 °C). Rainfall peaks in August.

Ban Houayxay averages 0 frost days, 179 hot days (≥ 30 °C) and 175 rainy days per year.

Ban Houayxay has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.1 °C (on 29 April 1960) and the coldest 3.7 °C (on 5 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

Ban HouayxayBokeo

coords: 20.25°, 100.45°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthAugustDriest monthFebruary

Mean daily temperature

24.2°C

Average daily high

29.9°C

Average daily low

20.0°C

Annual rainfall

1,795mm

Sunshine / day

9.4h

Mean relative humidity

76%

Average peak wind

8.0km/h

Seasonal range

7.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

179 d/yr

Rainy days (≥ 1 mm)

175 d/yr

Annual snowfall

0.0 cm

Average feels-like high

33.3 °C

Average feels-like low

22.7 °C

Average peak gust

27.1 km/h

Tropical nights (≥ 20 °C)

217 d/yr

Solar radiation

17.0 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °C per decade · r² = 0.75 · 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

29 April 1960

Coldest day

3.7 °C

5 January 1974

Wettest day

186 mm

24 July 2010

Windiest day

22.7 km/h

9 November 1990

Strongest gust

70.2 km/h

23 August 1987

Hottest feels-like

44.5 °C

11 May 2016

Coldest feels-like

0.7 °C

31 December 1973

Sunniest day

13.0 h

25 June 1941

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.1 °C25 April 2025	9.0 °C28 November 2025	25.0 °C	1,761 mm	232
2024	40.6 °C1 May 2024	12.8 °C5 February 2024	25.9 °C	1,968 mm	271
2023	39.8 °C6 May 2023	10.6 °C24 December 2023	25.9 °C	1,308 mm	267
2022	37.0 °C11 March 2022	11.3 °C19 December 2022	25.4 °C	1,643 mm	263
2021	38.8 °C21 March 2021	9.9 °C12 January 2021	25.3 °C	1,351 mm	251
2020	39.2 °C21 April 2020	9.0 °C27 January 2020	25.6 °C	1,278 mm	285
2019	40.8 °C19 May 2019	5.2 °C8 December 2019	25.9 °C	943 mm	286
2018	36.9 °C13 April 2018	10.7 °C12 January 2018	24.7 °C	2,060 mm	224
2017	37.9 °C10 April 2017	5.8 °C21 December 2017	25.0 °C	1,798 mm	227
2016	39.9 °C11 May 2016	6.5 °C26 January 2016	25.1 °C	1,666 mm	238
2015	38.1 °C5 July 2015	9.2 °C13 January 2015	25.0 °C	1,851 mm	239
2014	39.0 °C24 April 2014	6.8 °C23 January 2014	25.0 °C	1,431 mm	234
2013	37.7 °C30 April 2013	7.1 °C18 December 2013	25.0 °C	1,677 mm	228
2012	39.3 °C26 April 2012	9.5 °C16 January 2012	25.2 °C	1,684 mm	249
2011	35.3 °C7 March 2011	11.6 °C26 December 2011	24.5 °C	1,819 mm	189
2010	38.7 °C15 April 2010	11.4 °C7 February 2010	25.5 °C	1,733 mm	248
2009	37.2 °C25 April 2009	8.3 °C14 January 2009	24.9 °C	1,513 mm	228
2008	36.6 °C12 April 2008	8.1 °C1 December 2008	24.3 °C	2,203 mm	179
2007	37.7 °C24 April 2007	10.9 °C21 January 2007	24.7 °C	1,764 mm	211
2006	38.5 °C14 April 2006	8.4 °C21 December 2006	24.9 °C	1,846 mm	224
2005	38.4 °C19 May 2005	10.2 °C19 December 2005	24.9 °C	1,732 mm	231
2004	37.5 °C27 April 2004	10.4 °C8 December 2004	24.3 °C	1,997 mm	192
2003	38.3 °C8 May 2003	11.3 °C21 December 2003	24.6 °C	1,355 mm	214
2002	37.7 °C1 May 2002	10.6 °C19 January 2002	24.5 °C	2,061 mm	192
2001	37.7 °C11 April 2001	9.7 °C20 November 2001	24.6 °C	1,738 mm	199
2000	35.7 °C9 April 2000	10.6 °C14 January 2000	24.2 °C	1,955 mm	160
1999	37.3 °C26 April 1999	3.7 °C25 December 1999	24.3 °C	1,887 mm	163
1998	38.2 °C14 April 1998	10.5 °C13 December 1998	25.2 °C	1,571 mm	233
1997	37.5 °C8 May 1997	9.1 °C10 February 1997	24.7 °C	1,731 mm	204
1996	36.8 °C10 April 1996	8.1 °C1 January 1996	24.3 °C	2,015 mm	168
1995	38.5 °C22 April 1995	8.2 °C30 December 1995	24.6 °C	2,238 mm	185
1994	37.7 °C10 April 1994	12.0 °C1 January 1994	24.5 °C	2,221 mm	171
1993	36.6 °C6 May 1993	6.2 °C27 December 1993	24.2 °C	1,602 mm	192
1992	39.7 °C9 May 1992	9.2 °C6 January 1992	24.3 °C	1,440 mm	185
1991	38.1 °C18 April 1991	11.6 °C18 December 1991	24.5 °C	1,667 mm	193
1990	39.1 °C23 April 1990	10.2 °C11 January 1990	24.3 °C	1,983 mm	171
1989	39.1 °C23 April 1989	9.3 °C9 January 1989	24.4 °C	1,803 mm	191
1988	38.3 °C7 April 1988	10.9 °C12 December 1988	24.4 °C	1,924 mm	190
1987	37.3 °C15 April 1987	8.4 °C8 December 1987	24.4 °C	1,600 mm	194
1986	37.3 °C22 April 1986	8.3 °C5 March 1986	24.1 °C	1,864 mm	177
1985	37.4 °C15 April 1985	8.2 °C24 December 1985	24.2 °C	1,892 mm	174
1984	38.3 °C21 April 1984	9.9 °C9 January 1984	24.3 °C	2,032 mm	183
1983	39.4 °C18 April 1983	6.9 °C1 December 1983	24.6 °C	1,702 mm	210
1982	36.6 °C24 March 1982	8.1 °C28 December 1982	24.1 °C	2,075 mm	157
1981	37.8 °C8 April 1981	10.1 °C3 December 1981	24.2 °C	2,496 mm	170
1980	40.0 °C30 April 1980	10.4 °C29 January 1980	24.5 °C	1,835 mm	180
1979	38.5 °C14 May 1979	10.2 °C24 December 1979	24.6 °C	1,826 mm	199
1978	36.1 °C3 April 1978	9.3 °C15 December 1978	23.8 °C	2,260 mm	159
1977	36.6 °C17 April 1977	11.0 °C12 December 1977	23.6 °C	1,919 mm	160
1976	36.8 °C16 April 1976	5.7 °C1 January 1976	23.6 °C	1,798 mm	164
1975	38.9 °C29 April 1975	4.3 °C31 December 1975	23.8 °C	1,952 mm	169
1974	35.5 °C16 March 1974	3.7 °C5 January 1974	23.5 °C	1,897 mm	152
1973	37.4 °C17 April 1973	3.9 °C31 December 1973	23.8 °C	2,440 mm	169
1972	36.8 °C13 May 1972	10.0 °C21 January 1972	23.8 °C	2,136 mm	173
1971	37.6 °C26 April 1971	5.5 °C6 January 1971	23.2 °C	1,904 mm	146
1970	38.6 °C20 April 1970	9.2 °C21 December 1970	23.9 °C	2,203 mm	160
1969	39.2 °C26 April 1969	10.6 °C1 February 1969	24.3 °C	1,676 mm	193
1968	36.5 °C28 March 1968	10.2 °C25 January 1968	23.8 °C	1,857 mm	143
1967	36.8 °C4 April 1967	7.5 °C17 January 1967	23.8 °C	1,706 mm	136
1966	39.1 °C30 April 1966	12.0 °C2 January 1966	24.4 °C	1,609 mm	112
1965	39.1 °C30 April 1965	9.5 °C1 January 1965	23.7 °C	1,852 mm	149
1964	36.6 °C11 April 1964	8.3 °C19 December 1964	23.7 °C	1,770 mm	154
1963	39.0 °C25 April 1963	6.8 °C27 January 1963	23.7 °C	1,666 mm	154
1962	37.9 °C13 April 1962	8.5 °C6 December 1962	23.8 °C	1,435 mm	167
1961	36.7 °C23 March 1961	7.4 °C18 January 1961	23.8 °C	2,252 mm	128
1960	41.1 °C29 April 1960	9.4 °C3 January 1960	24.3 °C	1,717 mm	154
1959	40.4 °C11 April 1959	9.7 °C2 January 1959	24.1 °C	1,925 mm	174
1958	39.3 °C26 April 1958	9.3 °C2 February 1958	24.2 °C	1,543 mm	178
1957	39.4 °C13 May 1957	10.3 °C7 February 1957	24.3 °C	1,929 mm	182
1956	38.6 °C10 April 1956	8.3 °C4 January 1956	24.1 °C	1,762 mm	182
1955	37.0 °C23 March 1955	6.1 °C12 January 1955	23.5 °C	1,840 mm	166
1954	37.7 °C27 April 1954	7.7 °C16 December 1954	23.8 °C	1,449 mm	159
1953	34.6 °C22 July 1953	9.0 °C13 December 1953	22.8 °C	1,917 mm	105
1952	36.9 °C3 May 1952	9.6 °C13 December 1952	23.6 °C	2,014 mm	124
1951	37.9 °C11 April 1951	10.1 °C30 January 1951	23.5 °C	1,995 mm	115
1950	39.9 °C24 April 1950	9.5 °C7 January 1950	23.9 °C	1,716 mm	123
1949	34.5 °C12 April 1949	9.5 °C17 January 1949	23.6 °C	1,442 mm	108
1948	36.6 °C15 March 1948	7.6 °C3 January 1948	23.4 °C	1,847 mm	106
1947	37.1 °C8 May 1947	8.7 °C31 December 1947	23.7 °C	1,291 mm	112
1946	37.9 °C19 March 1946	7.2 °C11 January 1946	23.7 °C	1,162 mm	129
1945	36.7 °C30 March 1945	10.0 °C18 January 1945	23.5 °C	1,838 mm	91
1944	38.1 °C4 May 1944	9.2 °C21 December 1944	23.7 °C	1,701 mm	115
1943	38.0 °C7 April 1943	11.0 °C12 December 1943	23.5 °C	1,809 mm	118
1942	38.5 °C17 April 1942	9.2 °C7 December 1942	23.0 °C	2,012 mm	88
1941	36.8 °C24 March 1941	11.8 °C4 February 1941	23.3 °C	1,809 mm	91
1940	35.8 °C27 April 1940	7.2 °C3 January 1940	23.3 °C	1,765 mm	99

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

30.9 °C

+1.0 °C

Hot days (≥ 30 °C)

232 d/yr

+53

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1761 mm

-35 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	27.2 °C	+0.2 °C	1 mm	-20 mm
Feb	31.3 °C	+1.4 °C	9 mm	-7 mm
Mar	33.7 °C	+1.0 °C	5 mm	-37 mm
Apr	34.3 °C	+0.6 °C	41 mm	-53 mm
May	32.8 °C	+0.8 °C	197 mm	-29 mm
Jun	32.1 °C	+1.4 °C	239 mm	-22 mm
Jul	29.9 °C	0.0 °C	518 mm	+195 mm
Aug	31.3 °C	+1.6 °C	385 mm	+17 mm
Sep	31.6 °C	+1.7 °C	210 mm	-59 mm
Oct	31.4 °C	+2.0 °C	76 mm	-39 mm
Nov	27.9 °C	0.0 °C	76 mm	+33 mm
Dec	27.8 °C	+1.7 °C	5 mm	-14 mm

The year's extremes

Hottest day

38.1 °C

25 Apr 2025

Coldest day

9.0 °C

28 Nov 2025

Wettest day

76.6 mm

6 Jul 2025

Windiest day

17.4 km/h

26 Jan 2025

Strongest gust

53.6 km/h

31 Aug 2025

Hottest feels-like

42.4 °C

27 Apr 2025

Coldest feels-like

7.4 °C

28 Nov 2025

Sunniest day

12.9 h

7 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 Ban Houayxay?

Ban Houayxay has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 1,795 mm of precipitation per year.

What is the hottest day ever recorded in Ban Houayxay?

The hottest day measured in Ban Houayxay between 1940 and 2025 was 29 April 1960, reaching 41.1 °C.

What is the coldest day in Ban Houayxay?

The coldest day measured in Ban Houayxay between 1940 and 2025 was 5 January 1974, at 3.7 °C.

Does it snow in Ban Houayxay?

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

Has the climate of Ban Houayxay warmed?

Yes: Ban Houayxay warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ban Houayxay?

The wettest day measured in Ban Houayxay between 1940 and 2025 was 24 July 2010, with 186 mm of rain in 24 hours.

What was the windiest day in Ban Houayxay?

The windiest day measured in Ban Houayxay between 1940 and 2025 was 9 November 1990, with winds reaching 22.7 km/h.

What is the warmest month in Ban Houayxay?

The warmest month in Ban Houayxay is April (27.0 °C on average); the coldest is December (19.5 °C).

How much does it rain in Ban Houayxay?

Ban Houayxay receives on average 1,795 mm of precipitation per year, spread over about 175 rainy days.

Is it sunny in Ban Houayxay?

Ban Houayxay gets on average 9.4 hours of sunshine per day, roughly 3,431 hours per year over 1940-2025.

Are there tropical nights in Ban Houayxay?

Yes: Ban Houayxay has on average 217 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ban Houayxay?

In Ban Houayxay, between 1940 and 2025, the highest apparent temperature reached 44.5 °C on 11 May 2016, and the lowest was 0.7 °C on 31 December 1973.

Compare Ban Houayxay with another city

Pick a second city: its normals will be set against these, indicator by indicator.

Nearby cities

The climate around Ban Houayxay

Other cities — Laos

All cities in Laos →