Roi Et climate — normals and trends

Q: What is the climate of Roi Et?

Roi Et has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,343 mm of precipitation per year.

Q: What is the hottest day ever recorded in Roi Et?

The hottest day measured in Roi Et between 1940 and 2025 was 30 April 2024, reaching 43.0 °C.

Q: What is the coldest day in Roi Et?

The coldest day measured in Roi Et between 1940 and 2025 was 12 January 1955, at 6.2 °C.

Q: Does it snow in Roi Et?

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

Q: Has the climate of Roi Et warmed?

Yes: Roi Et warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Roi Et?

The wettest day measured in Roi Et between 1940 and 2025 was 26 July 2017, with 174 mm of rain in 24 hours.

Q: What was the windiest day in Roi Et?

The windiest day measured in Roi Et between 1940 and 2025 was 23 September 1964, with winds reaching 36.3 km/h.

Q: What is the warmest month in Roi Et?

The warmest month in Roi Et is April (29.6 °C on average); the coldest is December (23.2 °C).

Q: How much does it rain in Roi Et?

Roi Et receives on average 1,343 mm of precipitation per year, spread over about 159 rainy days.

Q: Is it sunny in Roi Et?

Roi Et gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Roi Et (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 26.9 °C and it receives 1,343 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 (29.6 °C on average) and the coldest is December (23.2 °C). Rainfall peaks in September.

Roi Et averages 0 frost days, 288 hot days (≥ 30 °C) and 159 rainy days per year.

Roi Et has warmed by +1.6 °C between 1940 and 2025, or +0.19 °C per decade. This trend is statistically significant.

The hottest day of the period reached 43.0 °C (on 30 April 2024) and the coldest 6.2 °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

Roi EtRoi Et

coords: 16.06°, 103.65°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthSeptemberDriest monthDecember

Mean daily temperature

26.9°C

Average daily high

32.1°C

Average daily low

22.8°C

Annual rainfall

1,343mm

Sunshine / day

10.1h

Mean relative humidity

71%

Average peak wind

14.5km/h

Seasonal range

6.4°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

288 d/yr

Rainy days (≥ 1 mm)

159 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.8 °C

Average feels-like low

25.4 °C

Average peak gust

32.7 km/h

Tropical nights (≥ 20 °C)

288 d/yr

Solar radiation

18.7 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.6 °C

since 1940

+0.2 °C per decade · r² = 0.58 · 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

43.0 °C

30 April 2024

Coldest day

6.2 °C

12 January 1955

Wettest day

174 mm

26 July 2017

Windiest day

36.3 km/h

23 September 1964

Strongest gust

74.9 km/h

16 October 1952

Hottest feels-like

47.9 °C

8 April 2024

Coldest feels-like

2.0 °C

12 January 1955

Sunniest day

12.6 h

7 July 1960

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	38.3 °C5 March 2025	11.7 °C13 January 2025	26.9 °C	1,440 mm	288
2024	43.0 °C30 April 2024	14.7 °C23 December 2024	28.4 °C	1,124 mm	329
2023	40.3 °C7 May 2023	12.2 °C30 January 2023	27.8 °C	1,417 mm	319
2022	37.7 °C28 April 2022	13.9 °C19 December 2022	27.0 °C	1,514 mm	308
2021	38.5 °C29 March 2021	10.7 °C13 January 2021	27.3 °C	1,368 mm	290
2020	39.8 °C21 April 2020	13.8 °C22 December 2020	27.8 °C	1,262 mm	300
2019	40.9 °C20 April 2019	13.7 °C7 December 2019	28.4 °C	1,181 mm	333
2018	38.8 °C14 April 2018	12.3 °C6 February 2018	27.5 °C	1,070 mm	320
2017	40.0 °C22 April 2017	11.5 °C21 December 2017	27.5 °C	1,786 mm	324
2016	42.4 °C17 April 2016	11.1 °C8 February 2016	28.1 °C	1,300 mm	334
2015	41.0 °C20 April 2015	12.2 °C14 January 2015	27.9 °C	1,154 mm	318
2014	39.5 °C31 March 2014	11.0 °C25 January 2014	27.4 °C	1,076 mm	319
2013	41.0 °C5 April 2013	12.4 °C28 December 2013	27.3 °C	1,254 mm	303
2012	38.2 °C25 February 2012	14.9 °C20 February 2012	27.6 °C	1,177 mm	330
2011	37.8 °C21 March 2011	13.5 °C12 December 2011	26.4 °C	1,476 mm	270
2010	41.0 °C12 April 2010	14.4 °C27 December 2010	27.9 °C	1,529 mm	308
2009	39.5 °C24 April 2009	10.7 °C11 January 2009	27.2 °C	1,481 mm	316
2008	37.8 °C12 April 2008	13.4 °C3 January 2008	26.5 °C	1,420 mm	268
2007	40.9 °C23 April 2007	13.3 °C29 January 2007	27.4 °C	1,465 mm	303
2006	38.7 °C13 April 2006	13.3 °C10 January 2006	27.5 °C	1,246 mm	320
2005	40.1 °C6 May 2005	11.4 °C2 January 2005	27.4 °C	1,041 mm	311
2004	39.9 °C16 April 2004	12.1 °C25 January 2004	27.1 °C	1,105 mm	320
2003	39.7 °C7 May 2003	12.8 °C12 January 2003	27.3 °C	1,216 mm	308
2002	39.6 °C6 April 2002	14.4 °C6 January 2002	27.5 °C	1,562 mm	318
2001	40.9 °C10 April 2001	13.3 °C23 December 2001	27.3 °C	1,299 mm	296
2000	39.1 °C3 April 2000	11.9 °C2 February 2000	26.9 °C	1,685 mm	297
1999	39.3 °C11 March 1999	8.2 °C24 December 1999	26.7 °C	1,422 mm	281
1998	41.2 °C14 April 1998	15.3 °C13 December 1998	28.2 °C	1,169 mm	325
1997	38.0 °C16 May 1997	13.2 °C12 January 1997	27.2 °C	1,137 mm	310
1996	39.6 °C20 March 1996	12.0 °C1 January 1996	26.7 °C	1,454 mm	273
1995	39.2 °C23 April 1995	12.0 °C6 January 1995	27.1 °C	1,337 mm	299
1994	39.7 °C2 May 1994	12.7 °C24 January 1994	27.1 °C	1,328 mm	304
1993	40.3 °C4 April 1993	11.0 °C30 January 1993	26.8 °C	1,092 mm	288
1992	41.4 °C21 April 1992	12.1 °C17 January 1992	27.1 °C	1,238 mm	274
1991	40.5 °C19 April 1991	14.8 °C29 December 1991	27.4 °C	1,196 mm	302
1990	39.7 °C23 April 1990	14.1 °C5 December 1990	27.0 °C	1,513 mm	302
1989	40.2 °C21 April 1989	14.1 °C12 February 1989	26.8 °C	1,423 mm	282
1988	39.6 °C30 March 1988	13.6 °C20 January 1988	27.0 °C	1,345 mm	275
1987	39.4 °C13 April 1987	12.8 °C8 December 1987	27.5 °C	1,220 mm	296
1986	40.3 °C20 March 1986	11.6 °C2 March 1986	26.7 °C	1,352 mm	276
1985	40.2 °C13 April 1985	13.0 °C17 December 1985	26.7 °C	1,229 mm	294
1984	39.8 °C5 April 1984	10.7 °C10 January 1984	26.6 °C	1,286 mm	269
1983	41.6 °C13 April 1983	9.8 °C24 January 1983	27.2 °C	1,351 mm	281
1982	39.9 °C30 April 1982	8.2 °C30 December 1982	26.9 °C	1,491 mm	290
1981	38.9 °C6 April 1981	12.2 °C12 January 1981	26.8 °C	1,314 mm	288
1980	41.1 °C25 April 1980	13.5 °C24 December 1980	27.2 °C	1,597 mm	301
1979	39.9 °C8 April 1979	14.4 °C29 November 1979	27.3 °C	1,407 mm	310
1978	38.4 °C2 April 1978	13.7 °C23 January 1978	26.9 °C	1,751 mm	288
1977	40.4 °C7 June 1977	12.8 °C23 February 1977	26.9 °C	1,336 mm	287
1976	39.4 °C17 April 1976	10.3 °C16 January 1976	26.3 °C	1,540 mm	267
1975	40.1 °C14 April 1975	8.2 °C30 December 1975	26.4 °C	1,634 mm	268
1974	38.7 °C6 April 1974	9.3 °C2 January 1974	26.6 °C	1,484 mm	279
1973	40.2 °C10 April 1973	11.1 °C27 December 1973	27.1 °C	1,385 mm	271
1972	39.9 °C7 May 1972	12.4 °C15 January 1972	26.8 °C	1,345 mm	292
1971	37.6 °C3 April 1971	10.8 °C5 January 1971	25.9 °C	1,142 mm	249
1970	38.4 °C14 March 1970	12.9 °C20 January 1970	26.7 °C	1,270 mm	272
1969	39.2 °C22 April 1969	12.9 °C6 February 1969	27.0 °C	1,300 mm	266
1968	38.0 °C1 April 1968	11.9 °C5 January 1968	26.5 °C	1,263 mm	295
1967	38.8 °C31 March 1967	9.5 °C17 January 1967	26.1 °C	984 mm	236
1966	38.4 °C29 April 1966	13.6 °C1 January 1966	26.7 °C	1,605 mm	281
1965	38.7 °C1 May 1965	11.0 °C2 January 1965	26.5 °C	1,365 mm	300
1964	39.0 °C7 April 1964	11.1 °C19 December 1964	26.4 °C	1,582 mm	273
1963	39.6 °C23 April 1963	7.9 °C15 January 1963	26.0 °C	1,368 mm	269
1962	38.0 °C7 April 1962	10.0 °C28 January 1962	25.9 °C	1,746 mm	247
1961	39.8 °C24 March 1961	10.6 °C19 January 1961	26.6 °C	1,596 mm	281
1960	41.2 °C29 April 1960	9.5 °C3 January 1960	26.7 °C	1,554 mm	275
1959	39.0 °C11 April 1959	12.0 °C12 January 1959	26.9 °C	1,321 mm	291
1958	40.7 °C25 April 1958	12.9 °C5 January 1958	26.5 °C	1,439 mm	275
1957	39.5 °C15 May 1957	12.8 °C12 February 1957	26.6 °C	1,508 mm	283
1956	38.3 °C24 March 1956	10.2 °C19 January 1956	26.0 °C	1,387 mm	262
1955	41.1 °C18 April 1955	6.2 °C12 January 1955	26.1 °C	1,221 mm	277
1954	39.5 °C18 April 1954	10.5 °C17 December 1954	26.6 °C	925 mm	300
1953	36.1 °C21 March 1953	12.9 °C9 January 1953	26.1 °C	1,627 mm	284
1952	38.6 °C12 April 1952	11.1 °C10 December 1952	26.4 °C	1,607 mm	279
1951	39.2 °C10 April 1951	12.1 °C14 January 1951	26.5 °C	1,144 mm	271
1950	40.1 °C24 April 1950	12.5 °C20 December 1950	26.5 °C	1,117 mm	271
1949	38.1 °C23 March 1949	9.7 °C16 January 1949	26.8 °C	1,395 mm	267
1948	39.4 °C13 March 1948	11.3 °C2 January 1948	26.2 °C	1,491 mm	249
1947	38.1 °C7 May 1947	11.7 °C21 December 1947	26.8 °C	1,050 mm	300
1946	39.0 °C6 April 1946	11.3 °C8 January 1946	27.1 °C	675 mm	302
1945	37.6 °C4 March 1945	11.6 °C18 January 1945	25.8 °C	1,253 mm	278
1944	38.8 °C4 May 1944	10.8 °C21 December 1944	26.5 °C	1,118 mm	284
1943	37.8 °C25 March 1943	11.1 °C13 January 1943	25.6 °C	1,377 mm	239
1942	36.7 °C18 April 1942	13.1 °C16 December 1942	25.8 °C	1,205 mm	230
1941	37.7 °C1 March 1941	15.4 °C2 February 1941	26.3 °C	1,345 mm	234
1940	38.5 °C11 March 1940	12.7 °C25 January 1940	25.5 °C	1,520 mm	213

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

32.1 °C

0.0 °C

Hot days (≥ 30 °C)

288 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1440 mm

+97 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.6 °C	-0.6 °C	0 mm	-7 mm
Feb	32.9 °C	+0.6 °C	3 mm	-12 mm
Mar	33.8 °C	-0.7 °C	26 mm	-17 mm
Apr	35.4 °C	+0.1 °C	72 mm	-4 mm
May	33.5 °C	-0.4 °C	203 mm	+27 mm
Jun	33.1 °C	+0.1 °C	147 mm	-30 mm
Jul	31.8 °C	-0.5 °C	225 mm	+31 mm
Aug	32.5 °C	+0.9 °C	212 mm	-20 mm
Sep	31.3 °C	+0.3 °C	316 mm	+35 mm
Oct	31.6 °C	+0.8 °C	118 mm	+6 mm
Nov	29.2 °C	-1.2 °C	113 mm	+87 mm
Dec	30.6 °C	+1.2 °C	6 mm	+1 mm

The year's extremes

Hottest day

38.3 °C

5 Mar 2025

Coldest day

11.7 °C

13 Jan 2025

Wettest day

55.7 mm

7 Nov 2025

Windiest day

31.2 km/h

11 Jan 2025

Strongest gust

67.7 km/h

23 Jul 2025

Hottest feels-like

44.4 °C

25 Apr 2025

Coldest feels-like

9.0 °C

13 Jan 2025

Sunniest day

12.3 h

18 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 Roi Et?

Roi Et has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 26.9 °C and it receives 1,343 mm of precipitation per year.

What is the hottest day ever recorded in Roi Et?

The hottest day measured in Roi Et between 1940 and 2025 was 30 April 2024, reaching 43.0 °C.

What is the coldest day in Roi Et?

The coldest day measured in Roi Et between 1940 and 2025 was 12 January 1955, at 6.2 °C.

Does it snow in Roi Et?

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

Has the climate of Roi Et warmed?

Yes: Roi Et warmed by +1.6 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Roi Et?

The wettest day measured in Roi Et between 1940 and 2025 was 26 July 2017, with 174 mm of rain in 24 hours.

What was the windiest day in Roi Et?

The windiest day measured in Roi Et between 1940 and 2025 was 23 September 1964, with winds reaching 36.3 km/h.

What is the warmest month in Roi Et?

The warmest month in Roi Et is April (29.6 °C on average); the coldest is December (23.2 °C).

How much does it rain in Roi Et?

Roi Et receives on average 1,343 mm of precipitation per year, spread over about 159 rainy days.

Is it sunny in Roi Et?

Roi Et gets on average 10.1 hours of sunshine per day, roughly 3,687 hours per year over 1940-2025.

Are there tropical nights in Roi Et?

Yes: Roi Et has on average 288 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Roi Et?

In Roi Et, between 1940 and 2025, the highest apparent temperature reached 47.9 °C on 8 April 2024, and the lowest was 2.0 °C on 12 January 1955.

Compare Roi Et with another city

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

Nearby cities

The climate around Roi Et

Other cities — Thailand

All cities in Thailand →