São Mateus climate — normals and trends

Q: What is the climate of São Mateus?

São Mateus has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 1,238 mm of precipitation per year.

Q: What is the hottest day ever recorded in São Mateus?

The hottest day measured in São Mateus between 1940 and 2025 was 6 February 1965, reaching 31.4 °C.

Q: What is the coldest day in São Mateus?

The coldest day measured in São Mateus between 1940 and 2025 was 6 September 1943, at 16.9 °C.

Q: Does it snow in São Mateus?

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

Q: Has the climate of São Mateus warmed?

Yes: São Mateus warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in São Mateus?

The wettest day measured in São Mateus between 1940 and 2025 was 3 February 2002, with 147 mm of rain in 24 hours.

Q: What was the windiest day in São Mateus?

The windiest day measured in São Mateus between 1940 and 2025 was 8 October 1985, with winds reaching 44.4 km/h.

Q: What is the warmest month in São Mateus?

The warmest month in São Mateus is February (26.0 °C on average); the coldest is July (22.1 °C).

Q: How much does it rain in São Mateus?

São Mateus receives on average 1,238 mm of precipitation per year, spread over about 195 rainy days.

Q: Is it sunny in São Mateus?

São Mateus gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

São Mateus (Brazil) has a tropical monsoon climate (Am) under the Köppen-Geiger classification. Its mean annual temperature is 24.2 °C and it receives 1,238 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 February (26.0 °C on average) and the coldest is July (22.1 °C). Rainfall peaks in November.

São Mateus averages 0 frost days, 1 hot days (≥ 30 °C) and 195 rainy days per year.

São Mateus has warmed by +1.1 °C between 1940 and 2025, or +0.13 °C per decade. This trend is statistically significant.

The hottest day of the period reached 31.4 °C (on 6 February 1965) and the coldest 16.9 °C (on 6 September 1943).

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

São MateusEspírito Santo

coords: -18.72°, -39.86°
period: 1940–2025 · 86 yrs

AmTropical monsoonWarmest monthFebruaryColdest monthJulyWettest monthNovemberDriest monthAugust

Mean daily temperature

24.2°C

Average daily high

25.9°C

Average daily low

22.6°C

Annual rainfall

1,238mm

Sunshine / day

10.4h

Mean relative humidity

82%

Average peak wind

21.6km/h

Seasonal range

3.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

1 d/yr

Rainy days (≥ 1 mm)

195 d/yr

Annual snowfall

0.0 cm

Average feels-like high

29.2 °C

Average feels-like low

24.5 °C

Average peak gust

33.9 km/h

Tropical nights (≥ 20 °C)

341 d/yr

Solar radiation

19.2 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+1.1 °C

since 1940

+0.1 °C per decade · r² = 0.55 · 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

31.4 °C

6 February 1965

Coldest day

16.9 °C

6 September 1943

Wettest day

147 mm

3 February 2002

Windiest day

44.4 km/h

8 October 1985

Strongest gust

68.8 km/h

29 December 1990

Hottest feels-like

39.6 °C

1 January 1974

Coldest feels-like

13.5 °C

24 September 1999

Sunniest day

13.0 h

26 November 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	30.0 °C21 January 2025	18.7 °C29 September 2025	24.4 °C	1,278 mm	2
2024	30.6 °C28 February 2024	19.8 °C18 August 2024	25.3 °C	1,348 mm	12
2023	31.2 °C19 April 2023	18.9 °C4 July 2023	24.9 °C	636 mm	5
2022	29.9 °C31 January 2022	17.9 °C29 June 2022	24.3 °C	1,373 mm	0
2021	29.9 °C31 March 2021	18.5 °C8 July 2021	24.3 °C	1,215 mm	0
2020	31.2 °C3 April 2020	18.7 °C26 August 2020	24.5 °C	1,200 mm	1
2019	31.0 °C24 February 2019	18.8 °C18 August 2019	25.1 °C	945 mm	21
2018	29.7 °C23 February 2018	19.6 °C7 July 2018	24.6 °C	1,404 mm	0
2017	29.7 °C5 March 2017	18.2 °C9 August 2017	24.4 °C	995 mm	0
2016	30.6 °C6 December 2016	18.5 °C16 June 2016	24.9 °C	954 mm	2
2015	30.0 °C6 April 2015	19.9 °C12 August 2015	25.0 °C	583 mm	1
2014	29.3 °C29 December 2014	18.6 °C8 August 2014	24.3 °C	1,035 mm	0
2013	30.4 °C11 March 2013	18.2 °C9 October 2013	24.4 °C	1,310 mm	2
2012	29.5 °C26 December 2012	17.8 °C27 September 2012	24.2 °C	857 mm	0
2011	30.1 °C23 February 2011	18.1 °C5 September 2011	24.0 °C	1,219 mm	1
2010	30.8 °C8 March 2010	17.6 °C17 August 2010	24.6 °C	1,090 mm	5
2009	30.6 °C13 December 2009	19.1 °C27 July 2009	24.8 °C	1,143 mm	3
2008	30.5 °C4 March 2008	18.6 °C18 July 2008	24.4 °C	1,291 mm	1
2007	29.7 °C14 January 2007	18.4 °C31 July 2007	24.4 °C	804 mm	0
2006	30.9 °C24 February 2006	17.4 °C19 July 2006	24.3 °C	1,448 mm	7
2005	30.1 °C27 February 2005	19.3 °C10 July 2005	24.5 °C	1,520 mm	1
2004	30.4 °C29 February 2004	16.9 °C23 July 2004	24.2 °C	1,664 mm	1
2003	29.8 °C23 December 2003	18.5 °C3 July 2003	24.7 °C	760 mm	0
2002	29.6 °C22 February 2002	19.8 °C6 July 2002	24.6 °C	1,323 mm	0
2001	29.8 °C3 February 2001	18.2 °C17 September 2001	24.5 °C	1,046 mm	0
2000	29.8 °C5 February 2000	18.4 °C6 August 2000	24.2 °C	1,406 mm	0
1999	30.1 °C30 January 1999	17.6 °C25 September 1999	24.1 °C	1,232 mm	1
1998	30.3 °C15 March 1998	18.5 °C13 July 1998	24.9 °C	796 mm	7
1997	31.1 °C3 December 1997	17.6 °C10 August 1997	24.3 °C	1,037 mm	1
1996	30.2 °C22 February 1996	17.7 °C6 August 1996	24.3 °C	995 mm	1
1995	30.1 °C17 February 1995	19.4 °C8 June 1995	24.5 °C	1,307 mm	1
1994	29.8 °C18 December 1994	17.4 °C11 August 1994	24.2 °C	954 mm	0
1993	30.0 °C29 November 1993	18.5 °C24 August 1993	24.4 °C	757 mm	1
1992	29.1 °C18 May 1992	18.3 °C26 July 1992	24.0 °C	1,633 mm	0
1991	29.6 °C13 February 1991	17.9 °C8 September 1991	24.0 °C	1,183 mm	0
1990	30.2 °C18 February 1990	19.2 °C26 September 1990	24.5 °C	1,075 mm	1
1989	29.6 °C22 February 1989	17.7 °C15 July 1989	24.2 °C	1,281 mm	0
1988	30.5 °C19 March 1988	18.1 °C14 July 1988	24.4 °C	897 mm	3
1987	29.7 °C6 March 1987	18.7 °C31 July 1987	24.6 °C	1,084 mm	0
1986	30.2 °C17 February 1986	17.8 °C11 July 1986	24.2 °C	803 mm	1
1985	29.5 °C11 March 1985	18.0 °C16 June 1985	24.0 °C	1,397 mm	0
1984	30.4 °C9 March 1984	18.7 °C2 September 1984	24.5 °C	1,228 mm	3
1983	29.7 °C12 February 1983	18.4 °C6 August 1983	24.4 °C	1,497 mm	0
1982	29.3 °C24 December 1982	17.8 °C9 September 1982	23.9 °C	1,143 mm	0
1981	29.4 °C8 March 1981	18.2 °C22 August 1981	23.7 °C	1,473 mm	0
1980	29.2 °C4 February 1980	19.0 °C31 August 1980	24.1 °C	1,220 mm	0
1979	29.2 °C16 December 1979	18.5 °C14 July 1979	23.9 °C	1,483 mm	0
1978	29.4 °C19 February 1978	19.0 °C17 September 1978	23.9 °C	1,574 mm	0
1977	29.4 °C1 April 1977	18.8 °C18 May 1977	24.1 °C	1,382 mm	0
1976	29.1 °C8 December 1976	19.0 °C2 September 1976	24.1 °C	1,262 mm	0
1975	29.6 °C14 February 1975	18.3 °C26 July 1975	23.9 °C	1,260 mm	0
1974	31.1 °C1 January 1974	18.3 °C12 July 1974	24.1 °C	1,067 mm	2
1973	30.9 °C9 March 1973	19.0 °C10 August 1973	24.6 °C	1,102 mm	3
1972	30.1 °C20 March 1972	19.3 °C30 July 1972	24.5 °C	928 mm	2
1971	29.6 °C20 February 1971	18.2 °C25 July 1971	24.1 °C	1,448 mm	0
1970	29.2 °C22 March 1970	18.1 °C19 July 1970	23.8 °C	1,263 mm	0
1969	29.3 °C16 February 1969	19.0 °C27 June 1969	24.3 °C	1,273 mm	0
1968	29.2 °C13 April 1968	17.8 °C14 August 1968	23.3 °C	1,196 mm	0
1967	29.9 °C16 January 1967	18.0 °C22 July 1967	24.0 °C	1,667 mm	0
1966	29.5 °C3 January 1966	18.8 °C23 September 1966	23.9 °C	1,238 mm	0
1965	31.4 °C6 February 1965	18.2 °C30 July 1965	24.1 °C	1,418 mm	3
1964	29.6 °C30 December 1964	18.3 °C8 August 1964	23.6 °C	1,896 mm	0
1963	29.5 °C3 January 1963	17.6 °C10 July 1963	24.1 °C	971 mm	0
1962	29.2 °C25 February 1962	18.4 °C18 June 1962	23.8 °C	1,327 mm	0
1961	29.0 °C29 January 1961	18.5 °C7 August 1961	24.1 °C	1,077 mm	0
1960	29.7 °C5 February 1960	18.4 °C18 July 1960	23.6 °C	1,568 mm	0
1959	29.6 °C25 December 1959	19.0 °C27 July 1959	24.1 °C	1,107 mm	0
1958	29.8 °C8 March 1958	19.0 °C26 June 1958	23.8 °C	1,330 mm	0
1957	29.5 °C18 February 1957	18.8 °C2 June 1957	23.8 °C	1,449 mm	0
1956	29.3 °C3 March 1956	17.6 °C11 August 1956	23.3 °C	1,525 mm	0
1955	29.5 °C18 December 1955	17.8 °C5 August 1955	23.6 °C	993 mm	0
1954	28.9 °C9 March 1954	18.8 °C2 August 1954	23.9 °C	1,086 mm	0
1953	29.5 °C3 November 1953	18.8 °C30 July 1953	24.0 °C	1,471 mm	0
1952	29.7 °C26 February 1952	19.2 °C29 July 1952	23.9 °C	1,468 mm	0
1951	29.3 °C15 March 1951	17.6 °C15 August 1951	23.4 °C	1,000 mm	0
1950	29.4 °C20 January 1950	18.4 °C14 July 1950	23.7 °C	1,298 mm	0
1949	29.7 °C1 April 1949	18.3 °C8 August 1949	23.7 °C	1,307 mm	0
1948	29.3 °C11 February 1948	18.3 °C3 September 1948	23.7 °C	1,445 mm	0
1947	30.0 °C27 February 1947	18.4 °C13 July 1947	23.8 °C	1,343 mm	2
1946	30.3 °C5 February 1946	18.7 °C5 July 1946	24.2 °C	931 mm	2
1945	30.2 °C30 November 1945	18.9 °C11 August 1945	24.2 °C	1,350 mm	2
1944	29.4 °C21 March 1944	18.7 °C14 June 1944	23.7 °C	1,267 mm	0
1943	28.9 °C21 January 1943	16.9 °C6 September 1943	23.0 °C	2,670 mm	0
1942	29.2 °C3 January 1942	17.7 °C1 August 1942	23.2 °C	1,275 mm	0
1941	29.4 °C26 January 1941	18.5 °C23 July 1941	24.0 °C	1,443 mm	0
1940	29.7 °C7 February 1940	18.6 °C10 July 1940	23.9 °C	1,441 mm	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

26.2 °C

+0.3 °C

Hot days (≥ 30 °C)

2 d/yr

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1278 mm

+40 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	28.1 °C	+0.6 °C	156 mm	+42 mm
Feb	28.3 °C	+0.5 °C	45 mm	-38 mm
Mar	28.2 °C	+0.6 °C	126 mm	-10 mm
Apr	27.4 °C	+0.7 °C	253 mm	+135 mm
May	25.7 °C	+0.1 °C	120 mm	+40 mm
Jun	25.2 °C	+0.6 °C	64 mm	+1 mm
Jul	23.8 °C	-0.1 °C	68 mm	+2 mm
Aug	24.0 °C	-0.1 °C	38 mm	-13 mm
Sep	24.6 °C	-0.1 °C	76 mm	+12 mm
Oct	25.1 °C	-0.5 °C	144 mm	+26 mm
Nov	26.4 °C	+0.2 °C	126 mm	-63 mm
Dec	27.7 °C	+0.7 °C	65 mm	-94 mm

The year's extremes

Hottest day

30.0 °C

21 Jan 2025

Coldest day

18.7 °C

29 Sep 2025

Wettest day

107.8 mm

17 Apr 2025

Windiest day

42.5 km/h

19 Oct 2025

Strongest gust

63.7 km/h

19 Oct 2025

Hottest feels-like

36.0 °C

21 Jan 2025

Coldest feels-like

16.3 °C

27 Sep 2025

Sunniest day

13.0 h

27 Nov 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 São Mateus?

São Mateus has a tropical monsoon climate (Köppen Am). Over 1940-2025, the average annual temperature is 24.2 °C and it receives 1,238 mm of precipitation per year.

What is the hottest day ever recorded in São Mateus?

The hottest day measured in São Mateus between 1940 and 2025 was 6 February 1965, reaching 31.4 °C.

What is the coldest day in São Mateus?

The coldest day measured in São Mateus between 1940 and 2025 was 6 September 1943, at 16.9 °C.

Does it snow in São Mateus?

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

Has the climate of São Mateus warmed?

Yes: São Mateus warmed by +1.1 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in São Mateus?

The wettest day measured in São Mateus between 1940 and 2025 was 3 February 2002, with 147 mm of rain in 24 hours.

What was the windiest day in São Mateus?

The windiest day measured in São Mateus between 1940 and 2025 was 8 October 1985, with winds reaching 44.4 km/h.

What is the warmest month in São Mateus?

The warmest month in São Mateus is February (26.0 °C on average); the coldest is July (22.1 °C).

How much does it rain in São Mateus?

São Mateus receives on average 1,238 mm of precipitation per year, spread over about 195 rainy days.

Is it sunny in São Mateus?

São Mateus gets on average 10.4 hours of sunshine per day, roughly 3,796 hours per year over 1940-2025.

Are there tropical nights in São Mateus?

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

What was the most extreme apparent temperature in São Mateus?

In São Mateus, between 1940 and 2025, the highest apparent temperature reached 39.6 °C on 1 January 1974, and the lowest was 13.5 °C on 24 September 1999.

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