Santo Tome climate — normals and trends

Q: What is the climate of Santo Tome?

Santo Tome has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 1,711 mm of precipitation per year.

Q: What is the hottest day ever recorded in Santo Tome?

The hottest day measured in Santo Tome between 1940 and 2025 was 16 November 1985, reaching 42.5 °C.

Q: What is the coldest day in Santo Tome?

The coldest day measured in Santo Tome between 1940 and 2025 was 18 July 1975, at -2.2 °C.

Q: Does it snow in Santo Tome?

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

Q: Has the climate of Santo Tome warmed?

Yes: Santo Tome warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Santo Tome?

The wettest day measured in Santo Tome between 1940 and 2025 was 28 November 2002, with 163 mm of rain in 24 hours.

Q: What was the windiest day in Santo Tome?

The windiest day measured in Santo Tome between 1940 and 2025 was 29 April 1992, with winds reaching 58.4 km/h.

Q: What is the warmest month in Santo Tome?

The warmest month in Santo Tome is January (26.4 °C on average); the coldest is July (15.1 °C).

Q: How much does it rain in Santo Tome?

Santo Tome receives on average 1,711 mm of precipitation per year, spread over about 122 rainy days.

Q: Is it sunny in Santo Tome?

Santo Tome gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Santo Tome (Argentina) has a humid subtropical climate (Cfa) under the Köppen-Geiger classification. Its mean annual temperature is 20.8 °C and it receives 1,711 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 January (26.4 °C on average) and the coldest is July (15.1 °C). Rainfall peaks in October.

Santo Tome averages 0 frost days, 98 hot days (≥ 30 °C) and 122 rainy days per year.

Santo Tome has warmed by +0.8 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.

The hottest day of the period reached 42.5 °C (on 16 November 1985) and the coldest -2.2 °C (on 18 July 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

Santo TomeCorrientes

coords: -28.55°, -56.04°
period: 1940–2025 · 86 yrs

CfaHumid subtropicalWarmest monthJanuaryColdest monthJulyWettest monthOctoberDriest monthJuly

Mean daily temperature

20.8°C

Average daily high

25.9°C

Average daily low

16.2°C

Annual rainfall

1,711mm

Sunshine / day

9.2h

Mean relative humidity

75%

Average peak wind

16.7km/h

Seasonal range

11.3°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

98 d/yr

Rainy days (≥ 1 mm)

122 d/yr

Annual snowfall

0.0 cm

Average feels-like high

27.7 °C

Average feels-like low

16.2 °C

Average peak gust

32.6 km/h

Tropical nights (≥ 20 °C)

103 d/yr

Solar radiation

17.1 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.8 °C

since 1940

+0.1 °C per decade · r² = 0.19 · 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

16 November 1985

Coldest day

-2.2 °C

18 July 1975

Wettest day

163 mm

28 November 2002

Windiest day

58.4 km/h

29 April 1992

Strongest gust

101.9 km/h

29 April 1992

Hottest feels-like

45.5 °C

16 November 1985

Coldest feels-like

-5.8 °C

14 June 1967

Sunniest day

13.7 h

8 January 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days	Frost days
2025	39.2 °C5 February 2025	-0.5 °C1 July 2025	21.0 °C	1,732 mm	118	1
2024	38.1 °C12 February 2024	1.3 °C10 July 2024	21.5 °C	1,628 mm	116	0
2023	39.9 °C12 February 2023	3.1 °C18 July 2023	22.0 °C	1,869 mm	129	0
2022	40.4 °C13 January 2022	1.6 °C11 June 2022	20.9 °C	1,193 mm	116	0
2021	38.6 °C11 January 2021	1.3 °C30 July 2021	20.8 °C	1,185 mm	116	0
2020	38.7 °C14 March 2020	-0.8 °C21 August 2020	21.3 °C	980 mm	135	1
2019	37.6 °C23 February 2019	0.3 °C7 July 2019	21.4 °C	1,778 mm	105	0
2018	37.6 °C11 December 2018	1.5 °C17 June 2018	21.1 °C	1,327 mm	119	0
2017	39.3 °C16 December 2017	0.5 °C18 July 2017	21.7 °C	1,882 mm	117	0
2016	39.0 °C24 January 2016	1.3 °C12 June 2016	20.7 °C	1,456 mm	107	0
2015	35.1 °C31 August 2015	3.1 °C12 September 2015	21.4 °C	2,290 mm	98	0
2014	38.9 °C7 February 2014	2.9 °C14 August 2014	21.4 °C	2,136 mm	111	0
2013	39.9 °C25 December 2013	1.2 °C27 August 2013	20.6 °C	1,555 mm	104	0
2012	39.6 °C18 February 2012	-0.4 °C7 June 2012	22.0 °C	1,374 mm	149	2
2011	39.6 °C20 December 2011	0.8 °C5 July 2011	21.2 °C	1,498 mm	121	0
2010	38.3 °C7 February 2010	1.3 °C14 July 2010	20.7 °C	1,647 mm	116	0
2009	37.4 °C2 November 2009	-1.1 °C25 July 2009	20.9 °C	1,659 mm	127	1
2008	39.7 °C21 December 2008	1.0 °C16 June 2008	20.9 °C	1,362 mm	118	0
2007	37.6 °C23 December 2007	0.3 °C12 July 2007	20.7 °C	1,892 mm	133	0
2006	39.5 °C8 January 2006	1.0 °C31 July 2006	21.5 °C	1,489 mm	135	0
2005	39.0 °C8 January 2005	2.6 °C20 July 2005	21.3 °C	1,345 mm	131	0
2004	37.5 °C31 January 2004	0.3 °C11 July 2004	20.9 °C	1,212 mm	125	0
2003	38.1 °C9 January 2003	0.7 °C12 July 2003	20.8 °C	1,953 mm	92	0
2002	38.3 °C10 March 2002	1.0 °C25 June 2002	21.3 °C	2,473 mm	120	0
2001	38.5 °C20 December 2001	0.5 °C28 July 2001	21.4 °C	1,940 mm	109	0
2000	37.7 °C8 January 2000	-2.1 °C20 July 2000	20.4 °C	1,966 mm	103	2
1999	37.6 °C4 January 1999	1.3 °C15 August 1999	20.8 °C	1,722 mm	127	0
1998	36.4 °C21 January 1998	3.2 °C25 June 1998	20.5 °C	2,430 mm	84	0
1997	36.2 °C7 January 1997	0.6 °C28 June 1997	21.3 °C	2,127 mm	111	0
1996	38.7 °C10 January 1996	-1.9 °C29 June 1996	20.4 °C	1,846 mm	100	2
1995	40.4 °C17 December 1995	-1.1 °C5 August 1995	20.9 °C	1,656 mm	105	1
1994	39.6 °C20 January 1994	-1.5 °C10 July 1994	21.2 °C	1,802 mm	101	1
1993	37.5 °C3 December 1993	1.0 °C11 August 1993	20.4 °C	1,877 mm	101	0
1992	37.4 °C8 February 1992	0.3 °C17 July 1992	20.1 °C	1,621 mm	92	0
1991	38.4 °C20 January 1991	-1.4 °C2 August 1991	21.1 °C	1,609 mm	106	3
1990	36.8 °C14 November 1990	0.9 °C28 July 1990	20.3 °C	2,106 mm	95	0
1989	36.4 °C6 December 1989	0.3 °C6 July 1989	20.4 °C	1,547 mm	103	0
1988	39.2 °C12 January 1988	1.1 °C1 June 1988	20.3 °C	1,422 mm	115	0
1987	37.7 °C1 December 1987	0.7 °C17 June 1987	20.5 °C	2,153 mm	98	0
1986	40.0 °C16 January 1986	3.8 °C22 July 1986	21.6 °C	2,478 mm	113	0
1985	42.5 °C16 November 1985	1.7 °C11 July 1985	21.7 °C	1,622 mm	126	0
1984	37.7 °C8 January 1984	0.1 °C26 August 1984	20.7 °C	2,477 mm	104	0
1983	39.1 °C27 December 1983	1.8 °C7 June 1983	20.5 °C	1,856 mm	110	0
1982	38.6 °C27 January 1982	2.7 °C29 June 1982	21.1 °C	1,864 mm	107	0
1981	36.1 °C24 October 1981	-1.0 °C18 June 1981	21.0 °C	1,506 mm	113	2
1980	38.1 °C9 February 1980	-0.7 °C31 July 1980	20.9 °C	1,715 mm	122	1
1979	39.2 °C5 February 1979	1.6 °C15 June 1979	20.3 °C	1,641 mm	93	0
1978	37.7 °C23 December 1978	0.6 °C1 June 1978	20.7 °C	1,401 mm	113	0
1977	36.9 °C23 October 1977	3.0 °C2 September 1977	21.4 °C	1,857 mm	116	0
1976	38.1 °C14 December 1976	0.5 °C10 July 1976	19.8 °C	1,296 mm	97	0
1975	37.1 °C14 February 1975	-2.2 °C18 July 1975	20.1 °C	1,765 mm	75	1
1974	37.9 °C18 November 1974	0.6 °C13 June 1974	20.3 °C	1,500 mm	98	0
1973	36.4 °C12 January 1973	1.3 °C7 September 1973	20.2 °C	2,298 mm	93	0
1972	39.4 °C6 March 1972	1.0 °C1 September 1972	20.6 °C	2,774 mm	82	0
1971	40.0 °C20 December 1971	0.3 °C17 June 1971	20.2 °C	1,450 mm	104	0
1970	38.8 °C22 January 1970	0.7 °C2 July 1970	20.8 °C	1,819 mm	109	0
1969	36.6 °C21 December 1969	0.2 °C2 August 1969	20.2 °C	1,965 mm	86	0
1968	38.4 °C7 January 1968	3.3 °C4 September 1968	20.6 °C	1,443 mm	114	0
1967	37.3 °C18 December 1967	-1.9 °C14 June 1967	20.6 °C	2,236 mm	82	1
1966	35.4 °C11 December 1966	1.4 °C6 August 1966	19.8 °C	1,995 mm	66	0
1965	38.7 °C22 January 1965	0.5 °C11 July 1965	20.3 °C	1,503 mm	89	0
1964	37.4 °C11 March 1964	1.6 °C29 June 1964	19.8 °C	1,012 mm	88	0
1963	38.8 °C2 January 1963	1.2 °C6 August 1963	21.0 °C	1,531 mm	105	0
1962	38.9 °C25 December 1962	1.0 °C30 May 1962	19.5 °C	1,236 mm	86	0
1961	37.5 °C31 January 1961	-0.2 °C15 June 1961	20.9 °C	1,761 mm	95	1
1960	37.9 °C24 December 1960	0.4 °C9 July 1960	20.4 °C	1,314 mm	97	0
1959	34.8 °C21 January 1959	4.9 °C10 June 1959	20.4 °C	2,270 mm	68	0
1958	37.5 °C7 January 1958	3.2 °C26 May 1958	20.4 °C	1,677 mm	73	0
1957	34.8 °C17 October 1957	1.0 °C22 July 1957	20.3 °C	1,600 mm	58	0
1956	33.4 °C5 February 1956	2.8 °C16 May 1956	19.3 °C	1,885 mm	34	0
1955	34.7 °C5 January 1955	0.4 °C8 July 1955	19.8 °C	1,572 mm	63	0
1954	34.3 °C11 December 1954	5.0 °C8 August 1954	20.3 °C	1,815 mm	51	0
1953	37.6 °C5 January 1953	2.3 °C20 July 1953	21.2 °C	1,899 mm	65	0
1952	36.9 °C27 December 1952	4.5 °C11 June 1952	20.6 °C	1,394 mm	71	0
1951	32.8 °C27 January 1951	5.1 °C6 July 1951	20.4 °C	1,586 mm	40	0
1950	33.8 °C22 November 1950	1.6 °C11 July 1950	20.3 °C	1,482 mm	54	0
1949	36.3 °C20 December 1949	2.2 °C19 July 1949	20.3 °C	1,338 mm	73	0
1948	33.4 °C12 December 1948	2.8 °C9 August 1948	20.3 °C	2,248 mm	26	0
1947	34.0 °C29 November 1947	0.5 °C10 July 1947	20.3 °C	1,710 mm	39	0
1946	34.5 °C25 January 1946	1.8 °C21 July 1946	20.3 °C	2,013 mm	49	0
1945	37.3 °C10 January 1945	0.6 °C24 June 1945	21.4 °C	1,393 mm	85	0
1944	37.1 °C21 December 1944	1.4 °C27 June 1944	21.8 °C	1,560 mm	87	0
1943	40.9 °C17 January 1943	4.9 °C29 August 1943	21.8 °C	896 mm	112	0
1942	38.0 °C29 December 1942	0.7 °C5 July 1942	20.6 °C	1,165 mm	100	0
1941	34.9 °C16 February 1941	2.3 °C26 June 1941	20.7 °C	1,833 mm	69	0
1940	35.6 °C8 March 1940	4.7 °C28 August 1940	20.7 °C	1,779 mm	95	0

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

26.5 °C

+0.6 °C

Hot days (≥ 30 °C)

118 d/yr

+20

Frost days (< 0 °C)

1 d/yr

Annual rainfall

1732 mm

+21 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	33.7 °C	+2.1 °C	34 mm	-136 mm
Feb	35.1 °C	+4.4 °C	85 mm	-51 mm
Mar	31.8 °C	+2.4 °C	83 mm	-45 mm
Apr	25.5 °C	-0.4 °C	54 mm	-101 mm
May	23.6 °C	+1.2 °C	279 mm	+142 mm
Jun	17.3 °C	-2.8 °C	182 mm	+51 mm
Jul	20.5 °C	+0.4 °C	50 mm	-58 mm
Aug	21.5 °C	-0.4 °C	145 mm	+33 mm
Sep	23.6 °C	-0.1 °C	266 mm	+109 mm
Oct	25.9 °C	-0.2 °C	182 mm	-7 mm
Nov	29.1 °C	+0.6 °C	85 mm	-68 mm
Dec	30.6 °C	-0.3 °C	289 mm	+152 mm

The year's extremes

Hottest day

39.2 °C

5 Feb 2025

Coldest day

-0.5 °C

1 Jul 2025

Wettest day

85.5 mm

9 May 2025

Windiest day

34.0 km/h

23 Aug 2025

Strongest gust

74.9 km/h

7 Nov 2025

Hottest feels-like

44.5 °C

4 Mar 2025

Coldest feels-like

-3.9 °C

1 Jul 2025

Sunniest day

13.7 h

8 Jan 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 Santo Tome?

Santo Tome has a humid subtropical climate (Köppen Cfa). Over 1940-2025, the average annual temperature is 20.8 °C and it receives 1,711 mm of precipitation per year.

What is the hottest day ever recorded in Santo Tome?

The hottest day measured in Santo Tome between 1940 and 2025 was 16 November 1985, reaching 42.5 °C.

What is the coldest day in Santo Tome?

The coldest day measured in Santo Tome between 1940 and 2025 was 18 July 1975, at -2.2 °C.

Does it snow in Santo Tome?

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

Has the climate of Santo Tome warmed?

Yes: Santo Tome warmed by +0.8 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Santo Tome?

The wettest day measured in Santo Tome between 1940 and 2025 was 28 November 2002, with 163 mm of rain in 24 hours.

What was the windiest day in Santo Tome?

The windiest day measured in Santo Tome between 1940 and 2025 was 29 April 1992, with winds reaching 58.4 km/h.

What is the warmest month in Santo Tome?

The warmest month in Santo Tome is January (26.4 °C on average); the coldest is July (15.1 °C).

How much does it rain in Santo Tome?

Santo Tome receives on average 1,711 mm of precipitation per year, spread over about 122 rainy days.

Is it sunny in Santo Tome?

Santo Tome gets on average 9.2 hours of sunshine per day, roughly 3,358 hours per year over 1940-2025.

Are there tropical nights in Santo Tome?

Yes: Santo Tome has on average 103 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Santo Tome?

In Santo Tome, between 1940 and 2025, the highest apparent temperature reached 45.5 °C on 16 November 1985, and the lowest was -5.8 °C on 14 June 1967.

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