Sam Phran climate — normals and trends

Q: What is the climate of Sam Phran?

Sam Phran has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.0 °C and it receives 1,333 mm of precipitation per year.

Q: What is the hottest day ever recorded in Sam Phran?

The hottest day measured in Sam Phran between 1940 and 2025 was 2 May 1967, reaching 40.6 °C.

Q: What is the coldest day in Sam Phran?

The coldest day measured in Sam Phran between 1940 and 2025 was 12 January 1955, at 12.2 °C.

Q: Does it snow in Sam Phran?

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

Q: Has the climate of Sam Phran warmed?

Yes: Sam Phran warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Sam Phran?

The wettest day measured in Sam Phran between 1940 and 2025 was 30 January 1953, with 173 mm of rain in 24 hours.

Q: What was the windiest day in Sam Phran?

The windiest day measured in Sam Phran between 1940 and 2025 was 3 November 2009, with winds reaching 28.9 km/h.

Q: What is the warmest month in Sam Phran?

The warmest month in Sam Phran is April (30.2 °C on average); the coldest is December (25.7 °C).

Q: How much does it rain in Sam Phran?

Sam Phran receives on average 1,333 mm of precipitation per year, spread over about 179 rainy days.

Q: Is it sunny in Sam Phran?

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

Sam Phran (Thailand) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 28.0 °C and it receives 1,333 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 (30.2 °C on average) and the coldest is December (25.7 °C). Rainfall peaks in September.

Sam Phran averages 0 frost days, 322 hot days (≥ 30 °C) and 179 rainy days per year.

Sam Phran has warmed by +2.1 °C between 1940 and 2025, or +0.25 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.6 °C (on 2 May 1967) and the coldest 12.2 °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

Sam PhranNakhon Pathom

coords: 13.73°, 100.22°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthAprilColdest monthDecemberWettest monthSeptemberDriest monthDecember

Mean daily temperature

28.0°C

Average daily high

32.5°C

Average daily low

24.7°C

Annual rainfall

1,333mm

Sunshine / day

10.0h

Mean relative humidity

74%

Average peak wind

13.3km/h

Seasonal range

4.5°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

322 d/yr

Rainy days (≥ 1 mm)

179 d/yr

Annual snowfall

0.0 cm

Average feels-like high

37.5 °C

Average feels-like low

28.7 °C

Average peak gust

31.5 km/h

Tropical nights (≥ 20 °C)

343 d/yr

Solar radiation

18.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.1 °C

since 1940

+0.3 °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

40.6 °C

2 May 1967

Coldest day

12.2 °C

12 January 1955

Wettest day

173 mm

30 January 1953

Windiest day

28.9 km/h

3 November 2009

Strongest gust

71.3 km/h

9 August 2007

Hottest feels-like

47.2 °C

4 May 2019

Coldest feels-like

9.0 °C

25 December 1999

Sunniest day

12.8 h

25 June 1942

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	36.7 °C28 March 2025	16.8 °C29 November 2025	28.4 °C	1,414 mm	336
2024	38.6 °C5 May 2024	19.2 °C21 December 2024	29.5 °C	1,152 mm	355
2023	39.1 °C6 May 2023	17.7 °C31 January 2023	29.0 °C	1,194 mm	342
2022	37.7 °C14 April 2022	18.8 °C19 December 2022	28.4 °C	1,602 mm	331
2021	38.3 °C19 May 2021	16.1 °C13 January 2021	28.4 °C	1,442 mm	332
2020	37.7 °C23 May 2020	19.0 °C21 December 2020	29.0 °C	1,216 mm	341
2019	39.4 °C3 May 2019	17.5 °C7 December 2019	29.1 °C	1,089 mm	344
2018	36.6 °C15 April 2018	18.1 °C13 January 2018	28.5 °C	1,470 mm	335
2017	37.4 °C26 April 2017	15.5 °C20 December 2017	28.5 °C	1,618 mm	334
2016	38.7 °C13 May 2016	15.2 °C26 January 2016	29.1 °C	1,139 mm	346
2015	38.8 °C21 April 2015	17.0 °C16 January 2015	29.0 °C	1,026 mm	347
2014	38.1 °C27 April 2014	13.4 °C24 January 2014	28.5 °C	1,147 mm	337
2013	39.5 °C2 May 2013	15.7 °C28 December 2013	28.4 °C	1,330 mm	325
2012	39.3 °C25 April 2012	20.7 °C9 January 2012	28.9 °C	1,417 mm	351
2011	38.2 °C18 April 2011	17.6 °C17 March 2011	28.0 °C	1,444 mm	323
2010	40.4 °C10 May 2010	19.3 °C18 December 2010	29.1 °C	1,229 mm	343
2009	40.0 °C23 April 2009	15.4 °C12 January 2009	28.6 °C	1,162 mm	343
2008	37.7 °C17 April 2008	18.1 °C10 December 2008	28.3 °C	1,271 mm	346
2007	38.2 °C16 June 2007	16.1 °C4 February 2007	28.8 °C	1,231 mm	344
2006	38.0 °C3 May 2006	16.7 °C24 December 2006	29.1 °C	1,260 mm	349
2005	38.9 °C6 May 2005	16.3 °C3 January 2005	29.0 °C	1,165 mm	338
2004	38.9 °C15 April 2004	17.8 °C15 February 2004	28.9 °C	967 mm	352
2003	39.2 °C6 May 2003	16.8 °C14 January 2003	28.8 °C	1,090 mm	349
2002	37.9 °C21 April 2002	18.7 °C1 January 2002	28.8 °C	1,283 mm	347
2001	40.3 °C20 April 2001	17.6 °C24 December 2001	28.7 °C	1,296 mm	336
2000	39.0 °C4 April 2000	16.2 °C4 February 2000	28.6 °C	1,211 mm	352
1999	37.8 °C18 March 1999	12.6 °C25 December 1999	28.0 °C	1,493 mm	330
1998	39.7 °C24 April 1998	18.3 °C17 December 1998	29.3 °C	1,199 mm	350
1997	39.6 °C20 June 1997	16.2 °C13 January 1997	28.9 °C	1,014 mm	353
1996	39.3 °C19 April 1996	14.6 °C2 January 1996	28.1 °C	1,628 mm	332
1995	40.5 °C15 April 1995	14.8 °C8 January 1995	28.5 °C	1,519 mm	338
1994	38.7 °C5 May 1994	17.6 °C26 January 1994	28.6 °C	1,147 mm	347
1993	39.4 °C28 March 1993	15.8 °C30 January 1993	28.4 °C	1,095 mm	338
1992	39.4 °C22 April 1992	16.4 °C18 January 1992	28.4 °C	1,070 mm	324
1991	38.9 °C19 May 1991	18.8 °C1 February 1991	28.7 °C	1,062 mm	353
1990	40.1 °C23 April 1990	16.5 °C6 December 1990	28.8 °C	1,058 mm	347
1989	39.3 °C4 April 1989	17.2 °C4 December 1989	28.4 °C	1,068 mm	335
1988	37.5 °C23 April 1988	17.5 °C20 January 1988	28.2 °C	1,487 mm	329
1987	39.2 °C11 April 1987	15.7 °C9 December 1987	28.5 °C	1,108 mm	328
1986	37.5 °C20 April 1986	15.6 °C7 January 1986	27.8 °C	1,310 mm	322
1985	38.9 °C10 April 1985	15.8 °C18 December 1985	27.8 °C	1,393 mm	317
1984	38.3 °C5 May 1984	14.0 °C10 January 1984	27.9 °C	927 mm	336
1983	37.8 °C21 May 1983	14.9 °C25 January 1983	28.0 °C	1,337 mm	305
1982	38.6 °C2 May 1982	13.8 °C29 December 1982	27.9 °C	1,046 mm	331
1981	38.0 °C15 March 1981	14.8 °C19 January 1981	27.7 °C	1,419 mm	309
1980	40.3 °C4 May 1980	17.0 °C25 December 1980	28.5 °C	1,141 mm	350
1979	40.4 °C20 April 1979	17.2 °C27 December 1979	28.6 °C	910 mm	355
1978	38.7 °C29 April 1978	16.8 °C16 December 1978	28.0 °C	1,528 mm	328
1977	37.7 °C8 June 1977	17.3 °C6 March 1977	28.1 °C	973 mm	349
1976	38.9 °C13 April 1976	13.0 °C1 January 1976	27.3 °C	1,615 mm	313
1975	39.1 °C29 April 1975	13.1 °C30 December 1975	27.3 °C	1,765 mm	301
1974	38.0 °C22 April 1974	13.7 °C5 January 1974	27.3 °C	1,684 mm	309
1973	39.0 °C23 April 1973	13.9 °C27 December 1973	27.8 °C	1,249 mm	322
1972	40.0 °C4 May 1972	14.6 °C16 January 1972	27.7 °C	1,830 mm	323
1971	37.5 °C12 May 1971	15.2 °C5 January 1971	27.1 °C	1,320 mm	295
1970	39.1 °C11 May 1970	17.8 °C2 January 1970	27.7 °C	1,401 mm	314
1969	38.5 °C13 May 1969	16.0 °C23 December 1969	28.1 °C	1,199 mm	315
1968	38.1 °C28 May 1968	14.6 °C6 January 1968	27.9 °C	1,116 mm	342
1967	40.6 °C2 May 1967	14.1 °C17 January 1967	27.6 °C	1,116 mm	318
1966	38.0 °C26 April 1966	16.8 °C1 January 1966	27.2 °C	1,709 mm	269
1965	38.4 °C24 April 1965	14.8 °C22 January 1965	27.5 °C	1,553 mm	315
1964	37.2 °C6 April 1964	15.0 °C19 December 1964	27.4 °C	1,413 mm	295
1963	37.9 °C17 May 1963	12.8 °C16 January 1963	27.3 °C	1,409 mm	300
1962	36.8 °C23 April 1962	15.1 °C28 January 1962	27.4 °C	1,350 mm	313
1961	37.4 °C26 April 1961	13.6 °C19 January 1961	27.5 °C	1,247 mm	312
1960	39.4 °C25 April 1960	12.5 °C4 January 1960	27.9 °C	1,193 mm	318
1959	37.2 °C27 April 1959	17.4 °C20 January 1959	27.9 °C	1,172 mm	323
1958	38.9 °C27 May 1958	17.0 °C25 November 1958	27.7 °C	1,155 mm	297
1957	38.5 °C18 May 1957	14.5 °C6 February 1957	27.7 °C	1,642 mm	321
1956	36.5 °C30 March 1956	13.4 °C17 January 1956	27.1 °C	1,318 mm	293
1955	37.0 °C17 April 1955	12.2 °C12 January 1955	27.1 °C	1,716 mm	296
1954	37.9 °C17 April 1954	14.0 °C17 December 1954	27.7 °C	1,052 mm	329
1953	36.0 °C17 April 1953	15.2 °C12 December 1953	26.4 °C	2,786 mm	254
1952	36.8 °C30 April 1952	14.4 °C12 December 1952	27.2 °C	1,807 mm	301
1951	38.1 °C10 April 1951	15.4 °C2 January 1951	27.5 °C	1,208 mm	304
1950	39.0 °C23 April 1950	16.8 °C4 January 1950	27.3 °C	1,363 mm	293
1949	37.3 °C23 May 1949	15.0 °C17 January 1949	27.4 °C	1,044 mm	316
1948	37.3 °C12 March 1948	15.2 °C3 January 1948	27.2 °C	1,301 mm	297
1947	37.9 °C7 May 1947	15.7 °C30 December 1947	27.5 °C	1,247 mm	314
1946	37.7 °C10 March 1946	15.1 °C9 January 1946	27.1 °C	1,415 mm	310
1945	36.8 °C2 March 1945	15.1 °C31 December 1945	27.0 °C	1,586 mm	291
1944	37.8 °C8 April 1944	14.3 °C21 December 1944	27.2 °C	1,651 mm	279
1943	36.4 °C26 March 1943	15.9 °C13 January 1943	26.6 °C	1,595 mm	253
1942	37.1 °C24 February 1942	15.0 °C16 December 1942	26.8 °C	1,382 mm	265
1941	38.2 °C10 March 1941	19.1 °C24 December 1941	27.2 °C	1,646 mm	247
1940	39.4 °C11 March 1940	13.8 °C5 January 1940	26.8 °C	1,621 mm	256

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

32.7 °C

+0.2 °C

Hot days (≥ 30 °C)

336 d/yr

+14

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1414 mm

+81 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	30.6 °C	-0.9 °C	0 mm	-18 mm
Feb	32.7 °C	-0.1 °C	35 mm	+7 mm
Mar	34.4 °C	+0.3 °C	41 mm	-6 mm
Apr	34.7 °C	-0.3 °C	90 mm	+13 mm
May	33.1 °C	-0.9 °C	241 mm	+91 mm
Jun	34.0 °C	+1.0 °C	101 mm	-44 mm
Jul	33.0 °C	+0.4 °C	162 mm	+11 mm
Aug	33.9 °C	+1.5 °C	146 mm	-15 mm
Sep	32.2 °C	+0.4 °C	284 mm	+31 mm
Oct	32.2 °C	+0.9 °C	181 mm	-40 mm
Nov	30.2 °C	-0.9 °C	126 mm	+57 mm
Dec	31.5 °C	+0.7 °C	7 mm	-6 mm

The year's extremes

Hottest day

36.7 °C

28 Mar 2025

Coldest day

16.8 °C

29 Nov 2025

Wettest day

62.3 mm

7 Sep 2025

Windiest day

20.3 km/h

27 Nov 2025

Strongest gust

65.2 km/h

23 Jul 2025

Hottest feels-like

44.8 °C

25 Apr 2025

Coldest feels-like

15.4 °C

29 Nov 2025

Sunniest day

12.5 h

1 Aug 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 Sam Phran?

Sam Phran has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 28.0 °C and it receives 1,333 mm of precipitation per year.

What is the hottest day ever recorded in Sam Phran?

The hottest day measured in Sam Phran between 1940 and 2025 was 2 May 1967, reaching 40.6 °C.

What is the coldest day in Sam Phran?

The coldest day measured in Sam Phran between 1940 and 2025 was 12 January 1955, at 12.2 °C.

Does it snow in Sam Phran?

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

Has the climate of Sam Phran warmed?

Yes: Sam Phran warmed by +2.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Sam Phran?

The wettest day measured in Sam Phran between 1940 and 2025 was 30 January 1953, with 173 mm of rain in 24 hours.

What was the windiest day in Sam Phran?

The windiest day measured in Sam Phran between 1940 and 2025 was 3 November 2009, with winds reaching 28.9 km/h.

What is the warmest month in Sam Phran?

The warmest month in Sam Phran is April (30.2 °C on average); the coldest is December (25.7 °C).

How much does it rain in Sam Phran?

Sam Phran receives on average 1,333 mm of precipitation per year, spread over about 179 rainy days.

Is it sunny in Sam Phran?

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

Are there tropical nights in Sam Phran?

Yes: Sam Phran has on average 343 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Sam Phran?

In Sam Phran, between 1940 and 2025, the highest apparent temperature reached 47.2 °C on 4 May 2019, and the lowest was 9.0 °C on 25 December 1999.

Compare Sam Phran with another city

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

Nearby cities

The climate around Sam Phran

Other cities — Thailand

All cities in Thailand →