Udon Thani climate — normals and trends

Q: What is the climate of Udon Thani?

Udon Thani has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.3 °C and it receives 1,595 mm of precipitation per year.

Q: What is the hottest day ever recorded in Udon Thani?

The hottest day measured in Udon Thani between 1940 and 2025 was 27 April 2024, reaching 42.6 °C.

Q: What is the coldest day in Udon Thani?

The coldest day measured in Udon Thani between 1940 and 2025 was 12 January 1955, at 3.5 °C.

Q: Does it snow in Udon Thani?

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

Q: Has the climate of Udon Thani warmed?

Yes: Udon Thani warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Udon Thani?

The wettest day measured in Udon Thani between 1940 and 2025 was 27 June 1983, with 151 mm of rain in 24 hours.

Q: What was the windiest day in Udon Thani?

The windiest day measured in Udon Thani between 1940 and 2025 was 17 September 1962, with winds reaching 34.1 km/h.

Q: What is the warmest month in Udon Thani?

The warmest month in Udon Thani is April (29.1 °C on average); the coldest is December (21.9 °C).

Q: How much does it rain in Udon Thani?

Udon Thani receives on average 1,595 mm of precipitation per year, spread over about 163 rainy days.

Q: Is it sunny in Udon Thani?

Udon Thani gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Udon Thani (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.3 °C and it receives 1,595 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 (29.1 °C on average) and the coldest is December (21.9 °C). Rainfall peaks in August.

Udon Thani averages 0 frost days, 257 hot days (≥ 30 °C) and 163 rainy days per year.

Udon Thani has warmed by +1.9 °C between 1940 and 2025, or +0.22 °C per decade. This trend is statistically significant.

The hottest day of the period reached 42.6 °C (on 27 April 2024) and the coldest 3.5 °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

Udon ThaniUdon Thani

coords: 17.42°, 102.79°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthAugustDriest monthDecember

Mean daily temperature

26.3°C

Average daily high

31.4°C

Average daily low

22.1°C

Annual rainfall

1,595mm

Sunshine / day

9.7h

Mean relative humidity

73%

Average peak wind

10.8km/h

Seasonal range

7.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

257 d/yr

Rainy days (≥ 1 mm)

163 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.6 °C

Average feels-like low

25.2 °C

Average peak gust

27.0 km/h

Tropical nights (≥ 20 °C)

271 d/yr

Solar radiation

18.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.9 °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

42.6 °C

27 April 2024

Coldest day

3.5 °C

12 January 1955

Wettest day

151 mm

27 June 1983

Windiest day

34.1 km/h

17 September 1962

Strongest gust

69.1 km/h

22 October 1952

Hottest feels-like

48.3 °C

8 April 2024

Coldest feels-like

0.2 °C

12 January 1955

Sunniest day

12.7 h

17 July 2020

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.9 °C24 April 2025	9.4 °C13 January 2025	26.6 °C	1,502 mm	274
2024	42.6 °C27 April 2024	13.3 °C23 December 2024	27.9 °C	1,293 mm	318
2023	42.3 °C6 May 2023	10.0 °C31 January 2023	27.7 °C	1,484 mm	303
2022	38.0 °C28 April 2022	11.0 °C19 December 2022	26.9 °C	1,701 mm	294
2021	38.7 °C29 March 2021	9.8 °C2 January 2021	27.1 °C	1,316 mm	293
2020	40.7 °C21 April 2020	13.1 °C6 December 2020	27.5 °C	1,220 mm	301
2019	41.5 °C20 April 2019	10.1 °C10 December 2019	27.9 °C	1,169 mm	326
2018	38.9 °C14 April 2018	12.7 °C6 February 2018	27.0 °C	1,523 mm	294
2017	39.4 °C3 May 2017	9.3 °C21 December 2017	27.1 °C	1,808 mm	299
2016	42.3 °C17 April 2016	8.4 °C8 February 2016	27.4 °C	1,548 mm	303
2015	41.6 °C20 April 2015	10.0 °C14 January 2015	27.6 °C	1,187 mm	300
2014	39.3 °C31 March 2014	7.8 °C23 January 2014	26.9 °C	1,303 mm	288
2013	40.3 °C5 April 2013	9.6 °C20 December 2013	26.7 °C	1,625 mm	275
2012	39.5 °C19 April 2012	14.4 °C10 January 2012	27.3 °C	1,435 mm	314
2011	38.2 °C17 April 2011	11.2 °C26 December 2011	25.9 °C	1,700 mm	248
2010	40.8 °C14 April 2010	12.8 °C27 December 2010	27.3 °C	1,634 mm	279
2009	40.1 °C24 April 2009	8.5 °C12 January 2009	26.9 °C	1,440 mm	286
2008	37.0 °C12 April 2008	10.6 °C3 January 2008	26.0 °C	1,738 mm	249
2007	41.4 °C23 April 2007	10.9 °C4 February 2007	27.0 °C	1,572 mm	285
2006	38.4 °C13 April 2006	10.2 °C23 December 2006	27.0 °C	1,486 mm	299
2005	41.1 °C12 April 2005	10.3 °C2 January 2005	27.0 °C	1,449 mm	283
2004	39.0 °C31 March 2004	11.3 °C25 January 2004	26.3 °C	1,471 mm	271
2003	41.2 °C7 May 2003	11.2 °C22 December 2003	26.8 °C	1,433 mm	279
2002	39.3 °C22 April 2002	12.3 °C4 January 2002	26.8 °C	1,898 mm	284
2001	41.1 °C10 April 2001	11.4 °C24 December 2001	26.7 °C	1,742 mm	277
2000	39.2 °C3 April 2000	10.1 °C2 February 2000	26.2 °C	1,970 mm	262
1999	38.4 °C13 March 1999	5.9 °C25 December 1999	26.1 °C	1,755 mm	253
1998	40.9 °C13 April 1998	13.2 °C13 December 1998	27.4 °C	1,334 mm	308
1997	38.4 °C6 May 1997	12.4 °C12 January 1997	26.5 °C	1,398 mm	273
1996	38.9 °C20 March 1996	8.7 °C2 January 1996	25.9 °C	1,713 mm	236
1995	39.1 °C23 April 1995	9.7 °C31 December 1995	26.5 °C	1,738 mm	261
1994	37.9 °C4 May 1994	13.1 °C24 January 1994	26.2 °C	1,757 mm	251
1993	38.5 °C28 March 1993	8.1 °C31 January 1993	26.2 °C	1,234 mm	267
1992	40.6 °C21 April 1992	10.7 °C17 January 1992	26.1 °C	1,570 mm	240
1991	39.7 °C19 April 1991	11.8 °C28 December 1991	26.6 °C	1,412 mm	263
1990	40.4 °C23 April 1990	11.7 °C5 December 1990	26.4 °C	1,649 mm	266
1989	39.3 °C21 April 1989	11.2 °C3 December 1989	26.1 °C	1,770 mm	256
1988	39.5 °C17 March 1988	11.7 °C13 December 1988	26.4 °C	1,527 mm	243
1987	38.1 °C23 March 1987	9.5 °C19 December 1987	26.6 °C	1,469 mm	265
1986	39.9 °C2 April 1986	8.9 °C8 January 1986	26.1 °C	1,707 mm	255
1985	39.9 °C11 April 1985	10.8 °C17 December 1985	26.1 °C	1,488 mm	246
1984	39.6 °C5 April 1984	10.0 °C10 January 1984	26.0 °C	1,654 mm	242
1983	41.2 °C14 April 1983	7.7 °C24 January 1983	26.2 °C	1,700 mm	251
1982	38.2 °C2 May 1982	7.0 °C29 December 1982	26.1 °C	1,691 mm	242
1981	38.4 °C7 April 1981	10.4 °C14 January 1981	26.1 °C	1,549 mm	245
1980	39.6 °C23 April 1980	12.7 °C8 January 1980	26.6 °C	1,740 mm	279
1979	39.3 °C8 April 1979	11.4 °C28 December 1979	26.4 °C	1,679 mm	267
1978	37.9 °C7 March 1978	11.9 °C16 December 1978	26.0 °C	2,291 mm	245
1977	38.4 °C17 April 1977	11.9 °C23 February 1977	26.0 °C	1,632 mm	242
1976	38.9 °C17 April 1976	8.0 °C1 January 1976	25.5 °C	1,739 mm	234
1975	40.7 °C28 April 1975	5.0 °C30 December 1975	25.9 °C	2,124 mm	243
1974	37.1 °C24 February 1974	6.4 °C5 January 1974	25.8 °C	1,711 mm	237
1973	40.4 °C7 April 1973	7.4 °C27 December 1973	26.4 °C	1,842 mm	255
1972	38.1 °C11 May 1972	9.9 °C16 January 1972	26.1 °C	1,746 mm	261
1971	37.9 °C8 April 1971	8.6 °C6 January 1971	25.4 °C	1,437 mm	222
1970	38.5 °C15 March 1970	12.9 °C1 February 1970	26.3 °C	1,557 mm	243
1969	38.8 °C28 March 1969	10.7 °C11 December 1969	26.2 °C	1,408 mm	254
1968	38.2 °C2 April 1968	10.5 °C5 January 1968	26.1 °C	1,556 mm	282
1967	38.8 °C31 March 1967	6.8 °C18 January 1967	25.8 °C	1,209 mm	230
1966	37.5 °C13 May 1966	11.4 °C2 January 1966	26.2 °C	1,582 mm	241
1965	37.5 °C3 April 1965	9.9 °C19 January 1965	25.9 °C	1,781 mm	264
1964	37.6 °C7 April 1964	8.2 °C19 December 1964	25.5 °C	1,804 mm	225
1963	38.2 °C21 April 1963	6.7 °C16 January 1963	25.3 °C	1,779 mm	216
1962	39.2 °C7 April 1962	8.1 °C6 December 1962	25.4 °C	1,878 mm	224
1961	38.4 °C23 March 1961	5.8 °C19 January 1961	25.9 °C	1,791 mm	246
1960	40.5 °C29 April 1960	9.1 °C4 January 1960	26.1 °C	1,882 mm	248
1959	38.1 °C12 April 1959	10.8 °C14 January 1959	26.0 °C	1,861 mm	253
1958	40.8 °C24 April 1958	10.9 °C15 December 1958	25.9 °C	1,466 mm	238
1957	39.2 °C14 May 1957	12.2 °C6 January 1957	26.0 °C	2,061 mm	253
1956	39.4 °C24 March 1956	9.0 °C17 January 1956	25.5 °C	1,766 mm	249
1955	41.6 °C18 April 1955	3.5 °C12 January 1955	25.5 °C	1,445 mm	253
1954	39.7 °C18 April 1954	7.6 °C17 December 1954	25.9 °C	1,213 mm	262
1953	36.4 °C15 April 1953	9.3 °C13 December 1953	25.2 °C	1,968 mm	223
1952	37.8 °C12 April 1952	8.6 °C13 December 1952	25.6 °C	2,098 mm	228
1951	39.1 °C10 April 1951	11.8 °C2 January 1951	25.7 °C	1,498 mm	238
1950	39.6 °C24 April 1950	11.6 °C26 December 1950	25.7 °C	1,407 mm	222
1949	37.4 °C15 June 1949	8.2 °C17 January 1949	26.0 °C	1,449 mm	239
1948	39.0 °C13 March 1948	9.0 °C3 January 1948	25.4 °C	1,674 mm	209
1947	38.2 °C1 April 1947	9.3 °C21 December 1947	26.0 °C	1,296 mm	238
1946	39.2 °C27 March 1946	9.8 °C8 January 1946	26.4 °C	755 mm	278
1945	36.8 °C4 March 1945	8.9 °C18 January 1945	25.3 °C	1,593 mm	221
1944	38.8 °C10 April 1944	8.2 °C21 December 1944	26.0 °C	1,214 mm	247
1943	37.5 °C25 March 1943	9.8 °C13 January 1943	25.0 °C	1,551 mm	194
1942	37.7 °C20 April 1942	10.3 °C15 December 1942	25.2 °C	1,664 mm	175
1941	38.3 °C23 March 1941	14.4 °C2 February 1941	25.7 °C	1,536 mm	178
1940	38.2 °C10 March 1940	9.6 °C1 January 1940	25.0 °C	1,679 mm	164

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

31.9 °C

+0.5 °C

Hot days (≥ 30 °C)

274 d/yr

+17

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1502 mm

-93 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.3 °C	-0.5 °C	0 mm	-9 mm
Feb	31.7 °C	+0.4 °C	28 mm	+13 mm
Mar	33.8 °C	0.0 °C	9 mm	-29 mm
Apr	35.8 °C	+1.1 °C	72 mm	-4 mm
May	33.5 °C	+0.3 °C	176 mm	-32 mm
Jun	33.0 °C	+0.6 °C	188 mm	-49 mm
Jul	31.5 °C	-0.3 °C	326 mm	+80 mm
Aug	32.3 °C	+1.1 °C	322 mm	+4 mm
Sep	31.7 °C	+0.7 °C	250 mm	-60 mm
Oct	32.0 °C	+1.4 °C	66 mm	-43 mm
Nov	29.1 °C	-0.5 °C	56 mm	+33 mm
Dec	30.0 °C	+1.9 °C	10 mm	+5 mm

The year's extremes

Hottest day

38.9 °C

24 Apr 2025

Coldest day

9.4 °C

13 Jan 2025

Wettest day

78.8 mm

31 Aug 2025

Windiest day

28.3 km/h

26 Jan 2025

Strongest gust

57.6 km/h

26 Jan 2025

Hottest feels-like

46.1 °C

25 Apr 2025

Coldest feels-like

7.8 °C

14 Jan 2025

Sunniest day

12.4 h

25 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 Udon Thani?

Udon Thani has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.3 °C and it receives 1,595 mm of precipitation per year.

What is the hottest day ever recorded in Udon Thani?

The hottest day measured in Udon Thani between 1940 and 2025 was 27 April 2024, reaching 42.6 °C.

What is the coldest day in Udon Thani?

The coldest day measured in Udon Thani between 1940 and 2025 was 12 January 1955, at 3.5 °C.

Does it snow in Udon Thani?

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

Has the climate of Udon Thani warmed?

Yes: Udon Thani warmed by +1.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Udon Thani?

The wettest day measured in Udon Thani between 1940 and 2025 was 27 June 1983, with 151 mm of rain in 24 hours.

What was the windiest day in Udon Thani?

The windiest day measured in Udon Thani between 1940 and 2025 was 17 September 1962, with winds reaching 34.1 km/h.

What is the warmest month in Udon Thani?

The warmest month in Udon Thani is April (29.1 °C on average); the coldest is December (21.9 °C).

How much does it rain in Udon Thani?

Udon Thani receives on average 1,595 mm of precipitation per year, spread over about 163 rainy days.

Is it sunny in Udon Thani?

Udon Thani gets on average 9.7 hours of sunshine per day, roughly 3,540 hours per year over 1940-2025.

Are there tropical nights in Udon Thani?

Yes: Udon Thani has on average 271 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Udon Thani?

In Udon Thani, between 1940 and 2025, the highest apparent temperature reached 48.3 °C on 8 April 2024, and the lowest was 0.2 °C on 12 January 1955.

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