Phak Hai climate — normals and trends

Q: What is the climate of Phak Hai?

Phak Hai has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.4 °C and it receives 1,251 mm of precipitation per year.

Q: What is the hottest day ever recorded in Phak Hai?

The hottest day measured in Phak Hai between 1940 and 2025 was 26 April 1980, reaching 42.5 °C.

Q: What is the coldest day in Phak Hai?

The coldest day measured in Phak Hai between 1940 and 2025 was 4 January 1960, at 11.7 °C.

Q: Does it snow in Phak Hai?

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

Q: Has the climate of Phak Hai warmed?

Yes: Phak Hai warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Phak Hai?

The wettest day measured in Phak Hai between 1940 and 2025 was 7 June 1972, with 109 mm of rain in 24 hours.

Q: What was the windiest day in Phak Hai?

The windiest day measured in Phak Hai between 1940 and 2025 was 23 November 1975, with winds reaching 30.6 km/h.

Q: What is the warmest month in Phak Hai?

The warmest month in Phak Hai is April (30.8 °C on average); the coldest is December (26.0 °C).

Q: How much does it rain in Phak Hai?

Phak Hai receives on average 1,251 mm of precipitation per year, spread over about 172 rainy days.

Q: Is it sunny in Phak Hai?

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

Phak Hai (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 28.4 °C and it receives 1,251 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 (30.8 °C on average) and the coldest is December (26.0 °C). Rainfall peaks in September.

Phak Hai averages 0 frost days, 334 hot days (≥ 30 °C) and 172 rainy days per year.

Phak Hai has warmed by +2.3 °C between 1940 and 2025, or +0.27 °C per decade. This trend is statistically significant.

The hottest day of the period reached 42.5 °C (on 26 April 1980) and the coldest 11.7 °C (on 4 January 1960).

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

Phak HaiPhra Nakhon Si Ayutthaya

coords: 14.46°, 100.37°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthSeptemberDriest monthDecember

Mean daily temperature

28.4°C

Average daily high

33.7°C

Average daily low

24.5°C

Annual rainfall

1,251mm

Sunshine / day

10.1h

Mean relative humidity

70%

Average peak wind

13.7km/h

Seasonal range

4.8°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

334 d/yr

Rainy days (≥ 1 mm)

172 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.9 °C

Average feels-like low

28.1 °C

Average peak gust

31.5 km/h

Tropical nights (≥ 20 °C)

341 d/yr

Solar radiation

18.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.3 °C

since 1940

+0.3 °C per decade · r² = 0.71 · 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

42.5 °C

26 April 1980

Coldest day

11.7 °C

4 January 1960

Wettest day

109 mm

7 June 1972

Windiest day

30.6 km/h

23 November 1975

Strongest gust

72.4 km/h

19 July 1962

Hottest feels-like

48.4 °C

18 April 1953

Coldest feels-like

8.0 °C

12 January 1955

Sunniest day

12.8 h

6 July 2023

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	39.6 °C25 April 2025	16.2 °C29 November 2025	28.8 °C	1,478 mm	340
2024	41.7 °C27 April 2024	19.3 °C21 December 2024	30.0 °C	1,151 mm	359
2023	41.4 °C7 May 2023	17.6 °C30 January 2023	29.8 °C	975 mm	353
2022	39.3 °C16 April 2022	18.2 °C19 December 2022	28.7 °C	1,404 mm	339
2021	40.2 °C2 June 2021	16.1 °C13 January 2021	29.0 °C	1,552 mm	340
2020	40.8 °C21 April 2020	19.0 °C21 December 2020	29.7 °C	1,063 mm	341
2019	41.6 °C3 May 2019	17.3 °C7 December 2019	29.9 °C	1,032 mm	351
2018	40.0 °C24 April 2018	18.1 °C14 January 2018	29.1 °C	1,291 mm	345
2017	40.8 °C21 April 2017	15.7 °C20 December 2017	29.1 °C	1,499 mm	344
2016	41.8 °C11 May 2016	14.2 °C26 January 2016	29.6 °C	951 mm	355
2015	40.3 °C20 April 2015	17.5 °C16 January 2015	29.5 °C	1,034 mm	352
2014	39.6 °C22 April 2014	13.1 °C24 January 2014	29.0 °C	1,062 mm	348
2013	41.5 °C2 May 2013	16.0 °C28 December 2013	28.8 °C	1,228 mm	338
2012	40.3 °C30 April 2012	20.3 °C9 January 2012	29.1 °C	1,285 mm	359
2011	38.1 °C18 April 2011	17.3 °C17 March 2011	28.1 °C	1,417 mm	331
2010	41.1 °C10 May 2010	19.0 °C28 December 2010	29.2 °C	1,345 mm	341
2009	40.1 °C24 April 2009	14.6 °C12 January 2009	28.6 °C	1,284 mm	340
2008	39.2 °C10 April 2008	17.6 °C2 January 2008	28.5 °C	1,332 mm	344
2007	40.9 °C1 April 2007	16.1 °C4 February 2007	29.2 °C	1,286 mm	352
2006	40.3 °C12 April 2006	15.5 °C24 December 2006	29.3 °C	1,257 mm	349
2005	41.1 °C6 May 2005	15.9 °C3 January 2005	29.3 °C	1,194 mm	343
2004	41.8 °C15 April 2004	17.2 °C15 February 2004	29.4 °C	901 mm	359
2003	41.5 °C7 May 2003	17.4 °C14 January 2003	29.3 °C	1,029 mm	358
2002	39.9 °C22 April 2002	18.9 °C1 January 2002	29.2 °C	1,227 mm	353
2001	41.8 °C11 April 2001	17.8 °C22 November 2001	29.1 °C	1,221 mm	347
2000	41.0 °C31 July 2000	15.9 °C4 February 2000	28.8 °C	1,294 mm	354
1999	39.8 °C18 March 1999	11.8 °C25 December 1999	28.5 °C	1,436 mm	341
1998	41.7 °C14 April 1998	18.8 °C17 December 1998	29.8 °C	1,059 mm	351
1997	41.9 °C14 June 1997	16.3 °C13 January 1997	29.5 °C	923 mm	359
1996	40.0 °C31 March 1996	13.5 °C2 January 1996	28.4 °C	1,459 mm	346
1995	41.4 °C15 April 1995	14.9 °C31 December 1995	28.9 °C	1,425 mm	345
1994	40.9 °C11 April 1994	17.9 °C26 January 1994	29.0 °C	1,176 mm	357
1993	41.9 °C3 May 1993	14.9 °C31 January 1993	29.0 °C	934 mm	351
1992	41.9 °C2 June 1992	16.4 °C18 January 1992	28.8 °C	1,043 mm	332
1991	40.2 °C10 April 1991	18.4 °C1 November 1991	28.9 °C	1,106 mm	354
1990	41.5 °C23 April 1990	16.5 °C6 December 1990	29.2 °C	1,060 mm	350
1989	40.5 °C19 April 1989	16.5 °C4 December 1989	28.9 °C	1,038 mm	352
1988	40.1 °C6 April 1988	17.0 °C21 January 1988	28.6 °C	1,306 mm	339
1987	40.7 °C3 April 1987	15.0 °C9 December 1987	28.8 °C	1,161 mm	334
1986	40.1 °C21 April 1986	15.8 °C7 January 1986	28.3 °C	1,205 mm	334
1985	40.3 °C13 April 1985	15.9 °C18 December 1985	28.2 °C	1,265 mm	340
1984	40.7 °C5 May 1984	13.2 °C10 January 1984	28.3 °C	832 mm	345
1983	41.1 °C14 April 1983	15.6 °C29 November 1983	28.6 °C	1,293 mm	314
1982	40.0 °C3 May 1982	13.6 °C23 December 1982	28.3 °C	1,045 mm	339
1981	40.3 °C6 April 1981	14.8 °C19 January 1981	28.1 °C	1,248 mm	332
1980	42.5 °C26 April 1980	16.5 °C25 December 1980	29.0 °C	1,058 mm	353
1979	40.8 °C2 April 1979	17.2 °C27 December 1979	29.1 °C	1,014 mm	356
1978	41.9 °C30 April 1978	15.7 °C16 December 1978	28.5 °C	1,322 mm	339
1977	39.7 °C18 April 1977	17.6 °C23 February 1977	28.5 °C	964 mm	355
1976	40.6 °C17 April 1976	12.2 °C1 January 1976	27.6 °C	1,621 mm	324
1975	40.2 °C29 April 1975	12.3 °C31 December 1975	27.6 °C	1,587 mm	312
1974	39.3 °C8 May 1974	13.1 °C2 January 1974	27.8 °C	1,540 mm	324
1973	41.7 °C23 April 1973	13.3 °C27 December 1973	28.6 °C	1,087 mm	337
1972	42.2 °C8 May 1972	14.5 °C16 January 1972	28.1 °C	1,728 mm	336
1971	39.6 °C25 April 1971	14.9 °C11 January 1971	27.6 °C	1,272 mm	318
1970	41.8 °C12 May 1970	17.8 °C18 December 1970	28.3 °C	1,309 mm	338
1969	41.0 °C4 April 1969	15.8 °C5 December 1969	28.5 °C	1,219 mm	333
1968	41.1 °C27 May 1968	14.5 °C6 January 1968	28.5 °C	1,067 mm	355
1967	40.5 °C31 March 1967	13.6 °C17 January 1967	27.9 °C	1,126 mm	332
1966	39.2 °C27 April 1966	17.3 °C2 January 1966	27.6 °C	1,429 mm	299
1965	40.5 °C1 May 1965	14.4 °C19 January 1965	27.9 °C	1,348 mm	340
1964	39.5 °C6 April 1964	15.1 °C19 December 1964	27.7 °C	1,419 mm	309
1963	42.0 °C17 May 1963	12.8 °C16 January 1963	27.8 °C	1,472 mm	320
1962	40.0 °C23 March 1962	15.0 °C6 December 1962	28.0 °C	1,180 mm	331
1961	39.7 °C25 April 1961	13.5 °C19 January 1961	28.1 °C	1,081 mm	340
1960	42.2 °C25 April 1960	11.7 °C4 January 1960	28.8 °C	1,025 mm	339
1959	39.6 °C18 June 1959	17.2 °C21 January 1959	28.4 °C	1,114 mm	341
1958	40.0 °C26 March 1958	16.6 °C25 November 1958	28.0 °C	988 mm	308
1957	41.0 °C15 May 1957	14.3 °C6 February 1957	27.8 °C	1,458 mm	334
1956	38.8 °C22 March 1956	12.5 °C17 January 1956	27.3 °C	1,188 mm	305
1955	39.5 °C18 April 1955	11.9 °C12 January 1955	27.1 °C	1,471 mm	305
1954	39.8 °C18 April 1954	14.3 °C17 December 1954	27.8 °C	1,045 mm	336
1953	36.2 °C15 April 1953	15.2 °C13 December 1953	26.3 °C	2,617 mm	259
1952	40.1 °C30 April 1952	14.1 °C12 December 1952	27.5 °C	1,651 mm	317
1951	40.9 °C9 April 1951	14.7 °C2 January 1951	27.9 °C	1,133 mm	314
1950	39.9 °C23 April 1950	14.9 °C3 January 1950	27.6 °C	1,261 mm	311
1949	38.2 °C14 May 1949	14.5 °C17 January 1949	27.8 °C	872 mm	335
1948	38.2 °C13 March 1948	14.8 °C3 January 1948	27.5 °C	1,267 mm	315
1947	38.9 °C7 March 1947	15.6 °C30 December 1947	28.0 °C	1,158 mm	338
1946	39.4 °C12 March 1946	15.6 °C31 December 1946	27.4 °C	1,214 mm	334
1945	37.9 °C1 April 1945	16.1 °C31 December 1945	27.1 °C	1,412 mm	311
1944	40.7 °C4 May 1944	14.4 °C22 December 1944	27.5 °C	1,411 mm	297
1943	38.6 °C7 April 1943	15.5 °C26 January 1943	26.9 °C	1,366 mm	292
1942	37.9 °C25 April 1942	14.7 °C17 December 1942	26.9 °C	1,339 mm	282
1941	39.1 °C29 April 1941	17.5 °C24 January 1941	27.2 °C	1,429 mm	268
1940	39.0 °C11 March 1940	13.3 °C5 January 1940	26.9 °C	1,491 mm	272

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

33.8 °C

+0.1 °C

Hot days (≥ 30 °C)

340 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1478 mm

+227 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	32.1 °C	-0.4 °C	0 mm	-15 mm
Feb	34.7 °C	+0.4 °C	29 mm	+3 mm
Mar	36.5 °C	+0.4 °C	47 mm	+2 mm
Apr	37.1 °C	+0.3 °C	69 mm	-12 mm
May	34.3 °C	-1.0 °C	287 mm	+136 mm
Jun	34.2 °C	+0.1 °C	116 mm	-20 mm
Jul	33.7 °C	+0.1 °C	150 mm	+12 mm
Aug	34.6 °C	+1.2 °C	161 mm	+6 mm
Sep	32.9 °C	+0.3 °C	305 mm	+47 mm
Oct	32.9 °C	+0.9 °C	167 mm	-21 mm
Nov	30.2 °C	-1.6 °C	139 mm	+90 mm
Dec	32.1 °C	+0.6 °C	8 mm	-1 mm

The year's extremes

Hottest day

39.6 °C

25 Apr 2025

Coldest day

16.2 °C

29 Nov 2025

Wettest day

59.4 mm

7 Sep 2025

Windiest day

24.9 km/h

19 Nov 2025

Strongest gust

61.2 km/h

24 Jul 2025

Hottest feels-like

45.5 °C

25 Apr 2025

Coldest feels-like

14.7 °C

28 Nov 2025

Sunniest day

12.7 h

17 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 Phak Hai?

Phak Hai has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.4 °C and it receives 1,251 mm of precipitation per year.

What is the hottest day ever recorded in Phak Hai?

The hottest day measured in Phak Hai between 1940 and 2025 was 26 April 1980, reaching 42.5 °C.

What is the coldest day in Phak Hai?

The coldest day measured in Phak Hai between 1940 and 2025 was 4 January 1960, at 11.7 °C.

Does it snow in Phak Hai?

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

Has the climate of Phak Hai warmed?

Yes: Phak Hai warmed by +2.3 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Phak Hai?

The wettest day measured in Phak Hai between 1940 and 2025 was 7 June 1972, with 109 mm of rain in 24 hours.

What was the windiest day in Phak Hai?

The windiest day measured in Phak Hai between 1940 and 2025 was 23 November 1975, with winds reaching 30.6 km/h.

What is the warmest month in Phak Hai?

The warmest month in Phak Hai is April (30.8 °C on average); the coldest is December (26.0 °C).

How much does it rain in Phak Hai?

Phak Hai receives on average 1,251 mm of precipitation per year, spread over about 172 rainy days.

Is it sunny in Phak Hai?

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

Are there tropical nights in Phak Hai?

Yes: Phak Hai has on average 341 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Phak Hai?

In Phak Hai, between 1940 and 2025, the highest apparent temperature reached 48.4 °C on 18 April 1953, and the lowest was 8.0 °C on 12 January 1955.

Compare Phak Hai with another city

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

Nearby cities

The climate around Phak Hai

Other cities — Thailand

All cities in Thailand →