Chon Daen climate — normals and trends

Q: What is the climate of Chon Daen?

Chon Daen has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.0 °C and it receives 1,581 mm of precipitation per year.

Q: What is the hottest day ever recorded in Chon Daen?

The hottest day measured in Chon Daen between 1940 and 2025 was 29 April 2024, reaching 41.3 °C.

Q: What is the coldest day in Chon Daen?

The coldest day measured in Chon Daen between 1940 and 2025 was 25 December 1999, at 6.8 °C.

Q: Does it snow in Chon Daen?

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

Q: Has the climate of Chon Daen warmed?

Yes: Chon Daen warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Chon Daen?

The wettest day measured in Chon Daen between 1940 and 2025 was 14 August 1947, with 188 mm of rain in 24 hours.

Q: What was the windiest day in Chon Daen?

The windiest day measured in Chon Daen between 1940 and 2025 was 10 May 1986, with winds reaching 27.0 km/h.

Q: What is the warmest month in Chon Daen?

The warmest month in Chon Daen is April (30.0 °C on average); the coldest is December (23.8 °C).

Q: How much does it rain in Chon Daen?

Chon Daen receives on average 1,581 mm of precipitation per year, spread over about 178 rainy days.

Q: Is it sunny in Chon Daen?

Chon Daen gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Chon Daen (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.0 °C and it receives 1,581 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 (30.0 °C on average) and the coldest is December (23.8 °C). Rainfall peaks in September.

Chon Daen averages 0 frost days, 304 hot days (≥ 30 °C) and 178 rainy days per year.

Chon Daen has warmed by +1.7 °C between 1940 and 2025, or +0.20 °C per decade. This trend is statistically significant.

The hottest day of the period reached 41.3 °C (on 29 April 2024) and the coldest 6.8 °C (on 25 December 1999).

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

Chon DaenPhetchabun

coords: 16.19°, 100.86°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthSeptemberDriest monthDecember

Mean daily temperature

27.0°C

Average daily high

32.3°C

Average daily low

23.0°C

Annual rainfall

1,581mm

Sunshine / day

10.0h

Mean relative humidity

73%

Average peak wind

9.3km/h

Seasonal range

6.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

304 d/yr

Rainy days (≥ 1 mm)

178 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.0 °C

Average feels-like low

26.5 °C

Average peak gust

26.4 km/h

Tropical nights (≥ 20 °C)

305 d/yr

Solar radiation

18.4 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.7 °C

since 1940

+0.2 °C per decade · r² = 0.67 · 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

41.3 °C

29 April 2024

Coldest day

6.8 °C

25 December 1999

Wettest day

188 mm

14 August 1947

Windiest day

27.0 km/h

10 May 1986

Strongest gust

63.0 km/h

22 October 1952

Hottest feels-like

47.1 °C

8 May 2003

Coldest feels-like

4.0 °C

12 January 1955

Sunniest day

12.8 h

8 July 2023

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.5 °C29 March 2025	11.8 °C28 November 2025	27.2 °C	1,666 mm	316
2024	41.3 °C29 April 2024	15.7 °C23 December 2024	28.4 °C	1,327 mm	341
2023	40.1 °C15 April 2023	13.1 °C31 January 2023	28.1 °C	1,413 mm	335
2022	38.5 °C16 April 2022	15.0 °C20 December 2022	27.5 °C	1,676 mm	324
2021	37.9 °C29 March 2021	12.8 °C20 January 2021	27.5 °C	1,643 mm	325
2020	40.6 °C21 April 2020	15.0 °C23 December 2020	28.2 °C	1,276 mm	328
2019	39.4 °C20 April 2019	11.9 °C7 December 2019	28.1 °C	1,468 mm	339
2018	37.6 °C14 April 2018	15.6 °C14 January 2018	27.4 °C	1,681 mm	327
2017	38.8 °C10 April 2017	10.8 °C21 December 2017	27.6 °C	1,687 mm	329
2016	41.1 °C17 April 2016	10.1 °C9 February 2016	28.0 °C	1,609 mm	335
2015	39.8 °C20 April 2015	13.8 °C15 January 2015	27.8 °C	1,419 mm	334
2014	38.6 °C22 April 2014	10.1 °C23 January 2014	27.4 °C	1,459 mm	328
2013	39.4 °C20 April 2013	12.9 °C28 December 2013	27.6 °C	1,611 mm	314
2012	39.0 °C26 April 2012	16.7 °C16 January 2012	28.0 °C	1,290 mm	351
2011	37.7 °C18 April 2011	14.9 °C13 December 2011	26.9 °C	1,996 mm	302
2010	40.7 °C14 April 2010	15.8 °C28 December 2010	28.1 °C	1,506 mm	326
2009	37.7 °C24 April 2009	11.2 °C12 January 2009	27.1 °C	1,722 mm	327
2008	37.6 °C21 April 2008	12.2 °C3 January 2008	27.0 °C	1,863 mm	310
2007	39.3 °C1 April 2007	12.4 °C4 February 2007	27.6 °C	1,611 mm	328
2006	39.1 °C13 April 2006	11.6 °C23 December 2006	27.7 °C	1,499 mm	331
2005	39.0 °C6 May 2005	12.7 °C3 January 2005	27.8 °C	1,268 mm	323
2004	39.4 °C15 April 2004	14.5 °C14 December 2004	27.3 °C	1,249 mm	336
2003	39.9 °C7 May 2003	13.6 °C22 December 2003	27.4 °C	1,529 mm	332
2002	38.6 °C21 April 2002	14.0 °C4 January 2002	27.6 °C	1,711 mm	333
2001	39.9 °C23 April 2001	14.2 °C23 November 2001	27.3 °C	1,565 mm	311
2000	38.1 °C4 April 2000	13.2 °C3 February 2000	27.0 °C	1,865 mm	320
1999	38.0 °C3 April 1999	6.8 °C25 December 1999	26.8 °C	1,890 mm	297
1998	39.8 °C16 April 1998	13.9 °C13 December 1998	28.0 °C	1,319 mm	337
1997	38.9 °C15 May 1997	14.5 °C10 February 1997	27.5 °C	1,264 mm	331
1996	37.4 °C17 April 1996	9.7 °C2 January 1996	26.8 °C	1,780 mm	311
1995	40.8 °C23 April 1995	11.7 °C31 December 1995	27.3 °C	1,768 mm	313
1994	38.6 °C12 April 1994	15.0 °C26 January 1994	27.1 °C	1,729 mm	320
1993	38.3 °C30 March 1993	10.1 °C28 December 1993	27.0 °C	1,163 mm	318
1992	40.1 °C6 May 1992	11.6 °C2 December 1992	27.0 °C	1,574 mm	296
1991	39.9 °C3 May 1991	15.8 °C17 November 1991	27.6 °C	1,577 mm	339
1990	39.8 °C23 April 1990	13.0 °C6 December 1990	27.4 °C	1,504 mm	328
1989	39.4 °C23 April 1989	12.6 °C3 December 1989	27.2 °C	1,430 mm	312
1988	39.3 °C11 April 1988	13.5 °C14 December 1988	27.3 °C	1,665 mm	309
1987	39.1 °C13 April 1987	11.1 °C9 December 1987	27.4 °C	1,444 mm	313
1986	38.8 °C27 March 1986	10.7 °C8 January 1986	26.9 °C	1,412 mm	316
1985	40.0 °C13 April 1985	12.9 °C25 December 1985	27.0 °C	1,549 mm	304
1984	39.4 °C9 April 1984	11.6 °C10 January 1984	26.9 °C	1,489 mm	305
1983	40.8 °C14 April 1983	11.6 °C29 November 1983	27.2 °C	1,657 mm	288
1982	37.9 °C9 May 1982	9.4 °C21 December 1982	26.9 °C	1,499 mm	298
1981	38.4 °C6 April 1981	11.8 °C15 January 1981	26.7 °C	1,443 mm	289
1980	40.4 °C24 April 1980	14.7 °C25 December 1980	27.4 °C	1,753 mm	315
1979	39.1 °C9 April 1979	13.5 °C28 December 1979	27.3 °C	1,342 mm	324
1978	39.9 °C23 March 1978	11.9 °C16 December 1978	27.3 °C	2,002 mm	315
1977	40.6 °C18 April 1977	14.1 °C19 November 1977	27.1 °C	1,410 mm	312
1976	40.6 °C17 April 1976	8.0 °C1 January 1976	26.5 °C	1,860 mm	297
1975	40.5 °C29 April 1975	7.1 °C31 December 1975	26.6 °C	2,039 mm	286
1974	38.0 °C7 April 1974	7.2 °C2 January 1974	26.7 °C	1,781 mm	307
1973	40.2 °C17 April 1973	8.4 °C27 December 1973	27.1 °C	1,474 mm	313
1972	40.6 °C5 May 1972	11.4 °C16 January 1972	27.1 °C	1,775 mm	306
1971	38.7 °C12 May 1971	9.9 °C11 January 1971	26.3 °C	1,370 mm	278
1970	39.2 °C12 May 1970	15.1 °C4 January 1970	27.0 °C	1,729 mm	307
1969	39.0 °C22 April 1969	12.1 °C12 December 1969	27.1 °C	1,752 mm	288
1968	39.4 °C3 April 1968	12.1 °C6 January 1968	26.9 °C	1,386 mm	334
1967	38.6 °C31 March 1967	9.7 °C18 January 1967	26.6 °C	1,478 mm	304
1966	37.6 °C10 April 1966	14.2 °C2 January 1966	26.6 °C	1,909 mm	244
1965	38.2 °C1 May 1965	10.6 °C19 January 1965	26.8 °C	1,744 mm	315
1964	39.8 °C7 April 1964	10.9 °C21 December 1964	26.5 °C	1,726 mm	283
1963	40.3 °C16 May 1963	8.5 °C16 January 1963	26.5 °C	1,691 mm	278
1962	40.3 °C23 March 1962	9.5 °C6 December 1962	26.6 °C	1,619 mm	294
1961	39.5 °C14 April 1961	8.2 °C19 January 1961	26.8 °C	1,397 mm	291
1960	41.2 °C28 April 1960	9.3 °C3 January 1960	27.3 °C	1,319 mm	321
1959	39.4 °C13 April 1959	13.6 °C14 January 1959	27.1 °C	1,445 mm	307
1958	39.6 °C25 April 1958	13.5 °C16 December 1958	27.0 °C	1,316 mm	292
1957	39.8 °C15 May 1957	13.2 °C6 February 1957	27.0 °C	1,716 mm	322
1956	38.6 °C26 March 1956	10.8 °C17 January 1956	26.3 °C	1,640 mm	284
1955	39.7 °C18 April 1955	7.1 °C13 January 1955	26.3 °C	1,505 mm	313
1954	38.8 °C18 April 1954	10.7 °C17 December 1954	26.5 °C	1,239 mm	313
1953	36.6 °C15 April 1953	11.2 °C13 December 1953	25.5 °C	2,345 mm	224
1952	37.7 °C24 April 1952	11.2 °C12 December 1952	26.3 °C	1,796 mm	283
1951	38.7 °C9 April 1951	13.4 °C2 January 1951	26.7 °C	1,220 mm	275
1950	39.0 °C24 April 1950	13.4 °C3 January 1950	26.3 °C	1,385 mm	256
1949	37.2 °C26 February 1949	10.9 °C17 January 1949	26.2 °C	1,374 mm	289
1948	36.8 °C16 March 1948	10.4 °C2 January 1948	26.2 °C	1,684 mm	265
1947	37.8 °C7 March 1947	12.3 °C30 December 1947	26.8 °C	1,374 mm	306
1946	40.0 °C12 March 1946	11.8 °C8 January 1946	26.4 °C	1,370 mm	278
1945	38.4 °C6 March 1945	13.4 °C19 January 1945	26.5 °C	1,647 mm	278
1944	40.6 °C4 May 1944	11.7 °C22 December 1944	26.6 °C	1,522 mm	255
1943	37.4 °C7 April 1943	13.0 °C14 January 1943	25.9 °C	1,914 mm	252
1942	37.0 °C25 April 1942	11.9 °C16 December 1942	25.7 °C	1,567 mm	180
1941	37.7 °C23 March 1941	15.8 °C24 January 1941	26.2 °C	1,621 mm	213
1940	38.1 °C11 March 1940	11.2 °C1 January 1940	25.7 °C	1,943 mm	183

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

32.2 °C

-0.1 °C

Hot days (≥ 30 °C)

316 d/yr

+12

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1666 mm

+85 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.4 °C	-0.9 °C	0 mm	-10 mm
Feb	33.0 °C	-0.3 °C	34 mm	+19 mm
Mar	34.9 °C	-0.2 °C	8 mm	-25 mm
Apr	35.5 °C	-0.3 °C	55 mm	-10 mm
May	33.4 °C	-0.5 °C	180 mm	+4 mm
Jun	32.6 °C	+0.4 °C	234 mm	+7 mm
Jul	31.3 °C	-0.1 °C	304 mm	+68 mm
Aug	31.9 °C	+1.0 °C	265 mm	-20 mm
Sep	31.1 °C	+0.3 °C	310 mm	-19 mm
Oct	32.2 °C	+1.1 °C	141 mm	-24 mm
Nov	30.0 °C	-1.0 °C	115 mm	+80 mm
Dec	30.6 °C	+0.2 °C	20 mm	+15 mm

The year's extremes

Hottest day

38.5 °C

29 Mar 2025

Coldest day

11.8 °C

28 Nov 2025

Wettest day

45.0 mm

31 Aug 2025

Windiest day

21.7 km/h

27 Jan 2025

Strongest gust

53.6 km/h

24 Jul 2025

Hottest feels-like

44.7 °C

25 Apr 2025

Coldest feels-like

10.7 °C

13 Jan 2025

Sunniest day

12.6 h

6 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 Chon Daen?

Chon Daen has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.0 °C and it receives 1,581 mm of precipitation per year.

What is the hottest day ever recorded in Chon Daen?

The hottest day measured in Chon Daen between 1940 and 2025 was 29 April 2024, reaching 41.3 °C.

What is the coldest day in Chon Daen?

The coldest day measured in Chon Daen between 1940 and 2025 was 25 December 1999, at 6.8 °C.

Does it snow in Chon Daen?

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

Has the climate of Chon Daen warmed?

Yes: Chon Daen warmed by +1.7 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Chon Daen?

The wettest day measured in Chon Daen between 1940 and 2025 was 14 August 1947, with 188 mm of rain in 24 hours.

What was the windiest day in Chon Daen?

The windiest day measured in Chon Daen between 1940 and 2025 was 10 May 1986, with winds reaching 27.0 km/h.

What is the warmest month in Chon Daen?

The warmest month in Chon Daen is April (30.0 °C on average); the coldest is December (23.8 °C).

How much does it rain in Chon Daen?

Chon Daen receives on average 1,581 mm of precipitation per year, spread over about 178 rainy days.

Is it sunny in Chon Daen?

Chon Daen gets on average 10.0 hours of sunshine per day, roughly 3,650 hours per year over 1940-2025.

Are there tropical nights in Chon Daen?

Yes: Chon Daen has on average 305 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Chon Daen?

In Chon Daen, between 1940 and 2025, the highest apparent temperature reached 47.1 °C on 8 May 2003, and the lowest was 4.0 °C on 12 January 1955.

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