Den Chai climate — normals and trends

Q: What is the climate of Den Chai?

Den Chai has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.7 °C and it receives 1,616 mm of precipitation per year.

Q: What is the hottest day ever recorded in Den Chai?

The hottest day measured in Den Chai between 1940 and 2025 was 16 May 1963, reaching 42.8 °C.

Q: What is the coldest day in Den Chai?

The coldest day measured in Den Chai between 1940 and 2025 was 31 December 1975, at 4.5 °C.

Q: Does it snow in Den Chai?

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

Q: Has the climate of Den Chai warmed?

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

Q: What is the wettest day in Den Chai?

The wettest day measured in Den Chai between 1940 and 2025 was 2 July 1978, with 184 mm of rain in 24 hours.

Q: What was the windiest day in Den Chai?

The windiest day measured in Den Chai between 1940 and 2025 was 22 October 1952, with winds reaching 21.1 km/h.

Q: What is the warmest month in Den Chai?

The warmest month in Den Chai is April (29.0 °C on average); the coldest is December (21.9 °C).

Q: How much does it rain in Den Chai?

Den Chai receives on average 1,616 mm of precipitation per year, spread over about 172 rainy days.

Q: Is it sunny in Den Chai?

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

Den Chai (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.7 °C and it receives 1,616 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 (29.0 °C on average) and the coldest is December (21.9 °C). Rainfall peaks in August.

Den Chai averages 0 frost days, 248 hot days (≥ 30 °C) and 172 rainy days per year.

Den Chai has warmed by +2.0 °C between 1940 and 2025, or +0.24 °C per decade. This trend is statistically significant.

The hottest day of the period reached 42.8 °C (on 16 May 1963) and the coldest 4.5 °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

Den ChaiPhrae

coords: 17.98°, 100.05°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthAugustDriest monthDecember

Mean daily temperature

25.7°C

Average daily high

31.4°C

Average daily low

21.3°C

Annual rainfall

1,616mm

Sunshine / day

9.4h

Mean relative humidity

78%

Average peak wind

8.4km/h

Seasonal range

7.1°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

248 d/yr

Rainy days (≥ 1 mm)

172 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.0 °C

Average feels-like low

24.5 °C

Average peak gust

25.6 km/h

Tropical nights (≥ 20 °C)

257 d/yr

Solar radiation

17.6 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

42.8 °C

16 May 1963

Coldest day

4.5 °C

31 December 1975

Wettest day

184 mm

2 July 1978

Windiest day

21.1 km/h

22 October 1952

Strongest gust

71.3 km/h

22 October 1952

Hottest feels-like

47.3 °C

7 May 2023

Coldest feels-like

2.0 °C

31 December 1975

Sunniest day

12.9 h

22 June 2024

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.0 °C26 March 2025	9.1 °C14 January 2025	26.2 °C	1,664 mm	263
2024	40.4 °C27 April 2024	14.3 °C21 December 2024	27.2 °C	1,464 mm	316
2023	40.9 °C7 May 2023	12.5 °C31 January 2023	27.0 °C	1,455 mm	311
2022	38.2 °C27 April 2022	12.4 °C20 December 2022	26.5 °C	1,651 mm	297
2021	38.9 °C21 March 2021	10.5 °C2 January 2021	26.6 °C	1,664 mm	297
2020	40.7 °C21 April 2020	11.4 °C29 January 2020	27.2 °C	1,125 mm	321
2019	40.9 °C20 April 2019	9.2 °C8 December 2019	27.2 °C	1,378 mm	324
2018	38.7 °C14 April 2018	14.6 °C15 January 2018	26.3 °C	1,641 mm	296
2017	39.2 °C10 April 2017	9.0 °C21 December 2017	26.4 °C	1,852 mm	285
2016	41.2 °C11 May 2016	7.8 °C9 February 2016	26.8 °C	1,554 mm	303
2015	40.0 °C8 May 2015	11.2 °C3 January 2015	26.8 °C	1,426 mm	306
2014	39.4 °C31 March 2014	7.1 °C23 January 2014	26.2 °C	1,499 mm	286
2013	39.5 °C30 April 2013	10.2 °C28 December 2013	26.3 °C	1,626 mm	261
2012	40.3 °C26 April 2012	10.6 °C17 January 2012	26.5 °C	1,563 mm	303
2011	36.1 °C7 March 2011	12.6 °C18 January 2011	25.5 °C	2,169 mm	255
2010	40.3 °C5 April 2010	13.8 °C30 December 2010	27.1 °C	1,451 mm	294
2009	39.3 °C24 April 2009	8.3 °C14 January 2009	26.0 °C	1,611 mm	274
2008	39.2 °C12 April 2008	9.9 °C3 January 2008	25.9 °C	1,691 mm	260
2007	41.1 °C24 April 2007	10.3 °C31 January 2007	26.2 °C	1,746 mm	302
2006	38.9 °C6 April 2006	8.9 °C23 December 2006	26.2 °C	1,962 mm	296
2005	40.6 °C1 April 2005	11.0 °C2 January 2005	26.5 °C	1,556 mm	286
2004	40.7 °C15 April 2004	12.5 °C14 December 2004	26.1 °C	1,551 mm	274
2003	40.0 °C7 May 2003	11.7 °C22 December 2003	26.1 °C	1,306 mm	286
2002	39.8 °C17 April 2002	12.6 °C4 January 2002	26.2 °C	1,837 mm	273
2001	38.1 °C28 April 2001	11.9 °C21 November 2001	25.8 °C	2,111 mm	269
2000	39.3 °C4 April 2000	11.0 °C2 February 2000	25.7 °C	1,886 mm	265
1999	37.4 °C16 March 1999	4.6 °C25 December 1999	25.6 °C	1,877 mm	234
1998	40.3 °C2 May 1998	12.5 °C13 December 1998	26.9 °C	1,050 mm	316
1997	39.3 °C8 May 1997	10.8 °C10 February 1997	26.2 °C	1,546 mm	290
1996	38.8 °C19 April 1996	8.9 °C2 January 1996	25.6 °C	1,845 mm	242
1995	41.5 °C23 April 1995	10.1 °C31 December 1995	26.1 °C	1,920 mm	255
1994	38.3 °C24 April 1994	12.3 °C1 January 1994	25.9 °C	2,273 mm	242
1993	40.5 °C5 May 1993	7.8 °C27 December 1993	25.8 °C	1,241 mm	269
1992	41.0 °C21 April 1992	10.3 °C19 January 1992	25.7 °C	1,487 mm	239
1991	40.9 °C17 April 1991	13.5 °C22 January 1991	26.2 °C	1,455 mm	282
1990	39.2 °C23 April 1990	12.2 °C6 December 1990	26.0 °C	1,580 mm	292
1989	40.9 °C19 April 1989	10.5 °C9 January 1989	26.1 °C	1,514 mm	267
1988	39.8 °C6 April 1988	12.3 °C13 December 1988	26.0 °C	1,582 mm	265
1987	40.5 °C14 April 1987	10.1 °C9 December 1987	26.1 °C	1,521 mm	275
1986	38.2 °C3 April 1986	9.1 °C8 January 1986	25.6 °C	1,660 mm	256
1985	40.8 °C12 April 1985	9.9 °C25 December 1985	25.8 °C	1,529 mm	243
1984	39.6 °C5 April 1984	10.7 °C10 January 1984	25.7 °C	1,527 mm	237
1983	41.5 °C16 April 1983	8.2 °C27 January 1983	26.1 °C	1,331 mm	258
1982	38.7 °C24 March 1982	9.4 °C22 December 1982	25.6 °C	1,472 mm	240
1981	39.7 °C8 April 1981	11.3 °C21 December 1981	25.8 °C	1,818 mm	241
1980	41.2 °C30 April 1980	12.2 °C13 January 1980	26.3 °C	1,705 mm	291
1979	40.2 °C6 May 1979	11.2 °C28 December 1979	26.1 °C	1,445 mm	271
1978	40.7 °C30 April 1978	9.7 °C16 December 1978	26.0 °C	2,116 mm	268
1977	38.4 °C17 April 1977	12.1 °C19 November 1977	25.4 °C	1,687 mm	237
1976	39.6 °C31 March 1976	6.8 °C1 January 1976	25.1 °C	1,930 mm	216
1975	41.1 °C29 April 1975	4.5 °C31 December 1975	25.3 °C	2,027 mm	234
1974	37.2 °C8 March 1974	5.4 °C5 January 1974	25.0 °C	1,860 mm	229
1973	39.1 °C27 April 1973	6.5 °C27 December 1973	25.3 °C	1,975 mm	247
1972	39.1 °C5 May 1972	9.5 °C17 January 1972	25.6 °C	1,630 mm	248
1971	38.9 °C26 April 1971	7.7 °C10 January 1971	24.9 °C	1,586 mm	215
1970	38.5 °C20 April 1970	12.3 °C1 February 1970	25.5 °C	1,783 mm	233
1969	41.6 °C5 May 1969	11.0 °C12 December 1969	25.8 °C	1,444 mm	243
1968	38.8 °C3 April 1968	10.2 °C21 January 1968	25.5 °C	1,355 mm	294
1967	38.1 °C10 April 1967	7.7 °C19 January 1967	25.4 °C	1,395 mm	245
1966	39.3 °C26 April 1966	11.2 °C2 January 1966	25.5 °C	1,516 mm	179
1965	40.3 °C29 April 1965	8.9 °C20 January 1965	25.5 °C	1,892 mm	237
1964	39.1 °C6 April 1964	9.6 °C21 December 1964	25.2 °C	1,476 mm	237
1963	42.8 °C16 May 1963	6.9 °C28 January 1963	25.3 °C	1,659 mm	217
1962	40.1 °C13 April 1962	8.4 °C7 December 1962	25.4 °C	1,421 mm	236
1961	38.4 °C26 April 1961	5.1 °C19 January 1961	25.2 °C	1,672 mm	216
1960	41.6 °C28 April 1960	9.3 °C3 January 1960	25.8 °C	1,524 mm	242
1959	41.0 °C11 April 1959	10.5 °C2 January 1959	25.7 °C	1,558 mm	245
1958	40.6 °C25 April 1958	10.2 °C16 December 1958	25.5 °C	1,446 mm	233
1957	39.2 °C13 May 1957	12.1 °C6 January 1957	25.6 °C	2,027 mm	246
1956	38.0 °C11 April 1956	10.6 °C28 November 1956	25.1 °C	1,604 mm	226
1955	38.8 °C18 April 1955	4.8 °C13 January 1955	24.8 °C	1,434 mm	233
1954	38.0 °C17 April 1954	8.8 °C17 December 1954	25.2 °C	1,159 mm	251
1953	35.7 °C15 April 1953	10.8 °C13 December 1953	24.1 °C	2,238 mm	140
1952	37.1 °C1 May 1952	10.7 °C14 December 1952	24.8 °C	1,883 mm	186
1951	38.4 °C9 April 1951	12.6 °C3 February 1951	25.1 °C	1,405 mm	192
1950	40.5 °C24 April 1950	11.9 °C20 January 1950	25.1 °C	1,438 mm	185
1949	37.7 °C26 February 1949	7.8 °C17 January 1949	24.8 °C	1,390 mm	217
1948	37.4 °C13 March 1948	7.3 °C3 January 1948	24.8 °C	1,452 mm	203
1947	38.1 °C8 May 1947	8.7 °C31 December 1947	25.1 °C	1,180 mm	209
1946	38.9 °C12 March 1946	9.1 °C10 January 1946	24.8 °C	1,395 mm	177
1945	38.1 °C1 April 1945	9.6 °C18 January 1945	24.8 °C	1,781 mm	174
1944	39.3 °C4 May 1944	9.0 °C22 December 1944	24.9 °C	1,631 mm	163
1943	38.4 °C7 April 1943	11.2 °C24 January 1943	24.7 °C	1,576 mm	180
1942	37.3 °C25 April 1942	11.2 °C15 December 1942	24.3 °C	1,656 mm	114
1941	38.8 °C23 March 1941	13.8 °C30 January 1941	24.8 °C	1,496 mm	124
1940	37.3 °C11 March 1940	9.0 °C1 January 1940	24.4 °C	1,472 mm	129

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

31.8 °C

+0.4 °C

Hot days (≥ 30 °C)

263 d/yr

+15

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1664 mm

+48 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.7 °C	-0.1 °C	0 mm	-15 mm
Feb	32.8 °C	+0.4 °C	8 mm	-4 mm
Mar	36.2 °C	+1.3 °C	2 mm	-32 mm
Apr	35.9 °C	+0.2 °C	49 mm	-16 mm
May	33.0 °C	-0.2 °C	237 mm	+39 mm
Jun	31.6 °C	+0.4 °C	275 mm	+41 mm
Jul	30.1 °C	-0.3 °C	367 mm	+117 mm
Aug	31.5 °C	+1.4 °C	255 mm	-56 mm
Sep	31.2 °C	+0.9 °C	257 mm	-48 mm
Oct	31.6 °C	+1.2 °C	95 mm	-51 mm
Nov	28.7 °C	-1.2 °C	102 mm	+64 mm
Dec	29.2 °C	+0.3 °C	18 mm	+8 mm

The year's extremes

Hottest day

39.0 °C

26 Mar 2025

Coldest day

9.1 °C

14 Jan 2025

Wettest day

52.6 mm

23 Jul 2025

Windiest day

15.9 km/h

23 Jul 2025

Strongest gust

48.6 km/h

23 Jul 2025

Hottest feels-like

44.2 °C

27 Apr 2025

Coldest feels-like

7.9 °C

14 Jan 2025

Sunniest day

12.8 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 Den Chai?

Den Chai has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.7 °C and it receives 1,616 mm of precipitation per year.

What is the hottest day ever recorded in Den Chai?

The hottest day measured in Den Chai between 1940 and 2025 was 16 May 1963, reaching 42.8 °C.

What is the coldest day in Den Chai?

The coldest day measured in Den Chai between 1940 and 2025 was 31 December 1975, at 4.5 °C.

Does it snow in Den Chai?

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

Has the climate of Den Chai warmed?

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

What is the wettest day in Den Chai?

The wettest day measured in Den Chai between 1940 and 2025 was 2 July 1978, with 184 mm of rain in 24 hours.

What was the windiest day in Den Chai?

The windiest day measured in Den Chai between 1940 and 2025 was 22 October 1952, with winds reaching 21.1 km/h.

What is the warmest month in Den Chai?

The warmest month in Den Chai is April (29.0 °C on average); the coldest is December (21.9 °C).

How much does it rain in Den Chai?

Den Chai receives on average 1,616 mm of precipitation per year, spread over about 172 rainy days.

Is it sunny in Den Chai?

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

Are there tropical nights in Den Chai?

Yes: Den Chai has on average 257 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Den Chai?

In Den Chai, between 1940 and 2025, the highest apparent temperature reached 47.3 °C on 7 May 2023, and the lowest was 2.0 °C on 31 December 1975.

Compare Den Chai with another city

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

Nearby cities

The climate around Den Chai

Other cities — Thailand

All cities in Thailand →