Ou Bei Choan climate — normals and trends

Q: What is the climate of Ou Bei Choan?

Ou Bei Choan has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 1,148 mm of precipitation per year.

Q: What is the hottest day ever recorded in Ou Bei Choan?

The hottest day measured in Ou Bei Choan between 1940 and 2025 was 27 April 2024, reaching 42.2 °C.

Q: What is the coldest day in Ou Bei Choan?

The coldest day measured in Ou Bei Choan between 1940 and 2025 was 12 January 1955, at 10.1 °C.

Q: Does it snow in Ou Bei Choan?

Almost never: Ou Bei Choan sees virtually no snow, with about 0 frost days per year.

Q: Has the climate of Ou Bei Choan warmed?

Yes: Ou Bei Choan warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Ou Bei Choan?

The wettest day measured in Ou Bei Choan between 1940 and 2025 was 23 September 1963, with 183 mm of rain in 24 hours.

Q: What was the windiest day in Ou Bei Choan?

The windiest day measured in Ou Bei Choan between 1940 and 2025 was 12 November 1973, with winds reaching 32.5 km/h.

Q: What is the warmest month in Ou Bei Choan?

The warmest month in Ou Bei Choan is April (29.8 °C on average); the coldest is December (25.2 °C).

Q: How much does it rain in Ou Bei Choan?

Ou Bei Choan receives on average 1,148 mm of precipitation per year, spread over about 180 rainy days.

Q: Is it sunny in Ou Bei Choan?

Ou Bei Choan gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Ou Bei Choan (Cambodia) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.6 °C and it receives 1,148 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 (29.8 °C on average) and the coldest is December (25.2 °C). Rainfall peaks in September.

Ou Bei Choan averages 0 frost days, 312 hot days (≥ 30 °C) and 180 rainy days per year.

Ou Bei Choan has warmed by +2.2 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.

The hottest day of the period reached 42.2 °C (on 27 April 2024) and the coldest 10.1 °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

Ou Bei ChoanBanteay Meanchey

coords: 13.77°, 102.74°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthSeptemberDriest monthDecember

Mean daily temperature

27.6°C

Average daily high

32.7°C

Average daily low

23.9°C

Annual rainfall

1,148mm

Sunshine / day

10.0h

Mean relative humidity

73%

Average peak wind

14.2km/h

Seasonal range

4.6°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

312 d/yr

Rainy days (≥ 1 mm)

180 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.1 °C

Average feels-like low

27.2 °C

Average peak gust

32.7 km/h

Tropical nights (≥ 20 °C)

333 d/yr

Solar radiation

18.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.2 °C

since 1940

+0.3 °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

42.2 °C

27 April 2024

Coldest day

10.1 °C

12 January 1955

Wettest day

183 mm

23 September 1963

Windiest day

32.5 km/h

12 November 1973

Strongest gust

81.0 km/h

3 August 2019

Hottest feels-like

48.0 °C

24 April 2019

Coldest feels-like

5.5 °C

12 January 1955

Sunniest day

12.6 h

17 July 1978

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.1 °C2 March 2025	14.7 °C13 January 2025	28.0 °C	1,296 mm	330
2024	42.2 °C27 April 2024	17.4 °C23 December 2024	29.4 °C	1,045 mm	355
2023	41.7 °C6 May 2023	16.4 °C29 January 2023	28.8 °C	1,150 mm	339
2022	39.5 °C28 April 2022	15.9 °C19 December 2022	27.9 °C	1,489 mm	320
2021	39.4 °C28 March 2021	14.2 °C12 January 2021	28.1 °C	1,266 mm	319
2020	40.7 °C10 March 2020	16.3 °C21 December 2020	28.8 °C	1,191 mm	332
2019	41.3 °C3 May 2019	16.5 °C7 December 2019	29.2 °C	998 mm	350
2018	39.8 °C24 April 2018	15.6 °C6 February 2018	28.6 °C	1,210 mm	350
2017	38.6 °C22 April 2017	14.9 °C20 December 2017	28.6 °C	1,114 mm	344
2016	42.1 °C15 April 2016	14.2 °C26 January 2016	29.0 °C	1,143 mm	343
2015	40.7 °C21 April 2015	16.5 °C16 January 2015	29.1 °C	975 mm	350
2014	39.5 °C21 April 2014	12.8 °C25 January 2014	28.3 °C	1,006 mm	338
2013	41.2 °C6 April 2013	14.8 °C28 December 2013	28.1 °C	1,432 mm	312
2012	40.5 °C26 April 2012	18.8 °C9 January 2012	28.8 °C	1,114 mm	349
2011	39.5 °C18 April 2011	15.8 °C12 December 2011	27.7 °C	1,317 mm	322
2010	40.8 °C13 April 2010	18.2 °C18 December 2010	28.8 °C	1,191 mm	338
2009	39.5 °C24 April 2009	14.1 °C11 January 2009	28.0 °C	1,173 mm	335
2008	39.0 °C21 April 2008	16.8 °C2 January 2008	27.9 °C	1,284 mm	322
2007	39.9 °C3 April 2007	16.8 °C29 January 2007	28.1 °C	1,198 mm	328
2006	39.2 °C13 March 2006	16.8 °C24 December 2006	28.2 °C	1,241 mm	336
2005	40.3 °C3 May 2005	15.4 °C2 January 2005	28.4 °C	1,043 mm	333
2004	39.7 °C13 March 2004	16.5 °C25 January 2004	28.3 °C	982 mm	348
2003	39.5 °C21 April 2003	16.4 °C21 December 2003	28.2 °C	1,059 mm	343
2002	38.8 °C7 April 2002	18.1 °C4 January 2002	28.3 °C	1,125 mm	339
2001	40.0 °C11 April 2001	15.5 °C23 December 2001	27.9 °C	1,204 mm	322
2000	38.7 °C4 April 2000	15.7 °C2 February 2000	27.6 °C	1,395 mm	319
1999	38.7 °C11 March 1999	11.7 °C24 December 1999	27.4 °C	1,427 mm	307
1998	41.4 °C16 April 1998	16.5 °C14 December 1998	28.8 °C	959 mm	336
1997	39.1 °C24 March 1997	16.7 °C12 January 1997	28.1 °C	1,152 mm	341
1996	39.0 °C22 March 1996	15.1 °C1 January 1996	27.5 °C	1,382 mm	304
1995	39.4 °C25 April 1995	15.0 °C6 January 1995	27.8 °C	1,150 mm	320
1994	38.6 °C12 April 1994	16.5 °C24 January 1994	27.8 °C	1,096 mm	339
1993	39.0 °C5 April 1993	14.6 °C29 January 1993	27.5 °C	877 mm	316
1992	39.5 °C27 April 1992	15.9 °C17 January 1992	27.6 °C	950 mm	299
1991	40.0 °C12 April 1991	18.3 °C30 December 1991	27.9 °C	1,088 mm	316
1990	39.4 °C23 April 1990	16.8 °C6 December 1990	28.0 °C	1,045 mm	333
1989	40.0 °C23 April 1989	16.8 °C5 December 1989	27.8 °C	1,044 mm	334
1988	39.3 °C19 March 1988	16.9 °C12 December 1988	27.7 °C	1,238 mm	297
1987	40.0 °C12 April 1987	15.4 °C7 December 1987	28.0 °C	1,068 mm	313
1986	39.1 °C20 March 1986	13.7 °C3 March 1986	27.4 °C	1,171 mm	304
1985	39.1 °C13 April 1985	15.7 °C17 December 1985	27.5 °C	1,075 mm	330
1984	39.2 °C20 March 1984	15.1 °C9 January 1984	27.5 °C	1,051 mm	322
1983	40.8 °C14 April 1983	13.6 °C24 January 1983	28.0 °C	1,170 mm	303
1982	38.6 °C24 March 1982	13.6 °C29 December 1982	27.5 °C	993 mm	325
1981	38.4 °C6 April 1981	15.1 °C14 January 1981	27.5 °C	1,152 mm	316
1980	40.0 °C3 May 1980	16.1 °C25 December 1980	27.8 °C	1,221 mm	326
1979	39.0 °C6 April 1979	16.6 °C27 December 1979	28.1 °C	1,040 mm	337
1978	39.6 °C2 April 1978	16.9 °C23 January 1978	27.8 °C	1,279 mm	329
1977	40.4 °C18 April 1977	16.1 °C23 February 1977	27.6 °C	939 mm	333
1976	38.5 °C23 April 1976	13.5 °C16 January 1976	27.0 °C	1,301 mm	305
1975	39.2 °C29 April 1975	12.0 °C30 December 1975	27.1 °C	1,200 mm	298
1974	36.1 °C9 March 1974	14.2 °C2 January 1974	26.8 °C	1,277 mm	299
1973	39.7 °C12 April 1973	13.6 °C27 December 1973	27.4 °C	1,119 mm	297
1972	39.1 °C28 May 1972	14.9 °C16 January 1972	27.2 °C	1,467 mm	313
1971	37.6 °C8 April 1971	13.5 °C5 January 1971	26.4 °C	1,090 mm	274
1970	37.7 °C28 February 1970	16.9 °C2 January 1970	27.2 °C	1,040 mm	298
1969	38.7 °C30 March 1969	15.9 °C5 December 1969	27.5 °C	984 mm	291
1968	37.9 °C3 April 1968	15.2 °C5 January 1968	27.4 °C	855 mm	337
1967	37.7 °C11 April 1967	11.6 °C17 January 1967	26.7 °C	944 mm	282
1966	37.5 °C29 April 1966	16.1 °C1 January 1966	27.1 °C	1,500 mm	267
1965	38.2 °C23 April 1965	14.0 °C22 January 1965	27.3 °C	1,142 mm	319
1964	39.5 °C6 April 1964	14.9 °C19 December 1964	27.4 °C	1,028 mm	308
1963	39.4 °C23 April 1963	12.0 °C15 January 1963	26.7 °C	1,369 mm	286
1962	39.4 °C5 April 1962	13.2 °C28 January 1962	26.8 °C	1,102 mm	288
1961	38.5 °C26 March 1961	13.6 °C17 January 1961	27.2 °C	1,072 mm	299
1960	39.4 °C25 April 1960	13.4 °C3 January 1960	27.4 °C	1,206 mm	307
1959	38.7 °C27 April 1959	16.0 °C13 January 1959	27.4 °C	988 mm	307
1958	40.3 °C25 April 1958	16.3 °C5 January 1958	27.4 °C	953 mm	291
1957	38.4 °C17 May 1957	15.4 °C3 January 1957	27.2 °C	1,346 mm	299
1956	38.9 °C24 March 1956	12.9 °C19 January 1956	26.7 °C	1,293 mm	280
1955	39.1 °C18 April 1955	10.1 °C12 January 1955	26.7 °C	1,234 mm	293
1954	38.7 °C16 April 1954	13.9 °C16 December 1954	27.0 °C	942 mm	311
1953	35.5 °C15 April 1953	15.1 °C12 December 1953	26.2 °C	1,650 mm	260
1952	38.1 °C17 February 1952	14.3 °C10 December 1952	26.8 °C	1,375 mm	290
1951	38.4 °C2 April 1951	15.2 °C2 January 1951	27.2 °C	802 mm	302
1950	38.4 °C24 April 1950	16.5 °C4 January 1950	26.9 °C	979 mm	278
1949	37.0 °C24 February 1949	12.7 °C16 January 1949	26.9 °C	985 mm	291
1948	37.4 °C24 May 1948	13.9 °C2 January 1948	27.1 °C	971 mm	288
1947	37.4 °C25 April 1947	14.7 °C21 December 1947	27.4 °C	1,028 mm	309
1946	37.6 °C28 March 1946	14.9 °C8 January 1946	26.9 °C	938 mm	319
1945	37.2 °C3 March 1945	15.1 °C18 January 1945	26.4 °C	1,218 mm	262
1944	38.4 °C8 April 1944	13.1 °C21 December 1944	26.9 °C	1,197 mm	278
1943	37.2 °C26 March 1943	14.5 °C13 January 1943	26.0 °C	1,422 mm	238
1942	36.6 °C24 March 1942	15.0 °C18 December 1942	26.6 °C	905 mm	274
1941	37.0 °C1 March 1941	17.5 °C25 December 1941	26.6 °C	1,354 mm	238
1940	38.2 °C11 March 1940	14.6 °C3 January 1940	26.2 °C	1,271 mm	235

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

33.1 °C

+0.4 °C

Hot days (≥ 30 °C)

330 d/yr

+18

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1296 mm

+148 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.6 °C	-0.3 °C	0 mm	-8 mm
Feb	35.3 °C	+1.4 °C	11 mm	-7 mm
Mar	36.3 °C	+0.9 °C	42 mm	-6 mm
Apr	36.7 °C	+1.0 °C	70 mm	-9 mm
May	33.7 °C	-0.5 °C	236 mm	+104 mm
Jun	33.2 °C	+0.2 °C	111 mm	-12 mm
Jul	32.5 °C	+0.3 °C	170 mm	+30 mm
Aug	33.0 °C	+1.1 °C	134 mm	-22 mm
Sep	31.6 °C	+0.3 °C	302 mm	+67 mm
Oct	31.6 °C	+0.7 °C	117 mm	-45 mm
Nov	30.0 °C	-0.8 °C	97 mm	+53 mm
Dec	32.2 °C	+1.6 °C	8 mm	+2 mm

The year's extremes

Hottest day

39.1 °C

2 Mar 2025

Coldest day

14.7 °C

13 Jan 2025

Wettest day

29.2 mm

26 May 2025

Windiest day

28.0 km/h

19 Nov 2025

Strongest gust

66.2 km/h

23 Jul 2025

Hottest feels-like

45.1 °C

16 Mar 2025

Coldest feels-like

12.2 °C

13 Jan 2025

Sunniest day

12.3 h

19 Jul 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 Ou Bei Choan?

Ou Bei Choan has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.6 °C and it receives 1,148 mm of precipitation per year.

What is the hottest day ever recorded in Ou Bei Choan?

The hottest day measured in Ou Bei Choan between 1940 and 2025 was 27 April 2024, reaching 42.2 °C.

What is the coldest day in Ou Bei Choan?

The coldest day measured in Ou Bei Choan between 1940 and 2025 was 12 January 1955, at 10.1 °C.

Does it snow in Ou Bei Choan?

Almost never: Ou Bei Choan sees virtually no snow, with about 0 frost days per year.

Has the climate of Ou Bei Choan warmed?

Yes: Ou Bei Choan warmed by +2.2 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Ou Bei Choan?

The wettest day measured in Ou Bei Choan between 1940 and 2025 was 23 September 1963, with 183 mm of rain in 24 hours.

What was the windiest day in Ou Bei Choan?

The windiest day measured in Ou Bei Choan between 1940 and 2025 was 12 November 1973, with winds reaching 32.5 km/h.

What is the warmest month in Ou Bei Choan?

The warmest month in Ou Bei Choan is April (29.8 °C on average); the coldest is December (25.2 °C).

How much does it rain in Ou Bei Choan?

Ou Bei Choan receives on average 1,148 mm of precipitation per year, spread over about 180 rainy days.

Is it sunny in Ou Bei Choan?

Ou Bei Choan gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Are there tropical nights in Ou Bei Choan?

Yes: Ou Bei Choan has on average 333 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Ou Bei Choan?

In Ou Bei Choan, between 1940 and 2025, the highest apparent temperature reached 48.0 °C on 24 April 2019, and the lowest was 5.5 °C on 12 January 1955.

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