Urbano Santos climate — normals and trends

Q: What is the climate of Urbano Santos?

Urbano Santos has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.1 °C and it receives 1,552 mm of precipitation per year.

Q: What is the hottest day ever recorded in Urbano Santos?

The hottest day measured in Urbano Santos between 1940 and 2025 was 14 December 2012, reaching 40.0 °C.

Q: What is the coldest day in Urbano Santos?

The coldest day measured in Urbano Santos between 1940 and 2025 was 27 July 1975, at 18.2 °C.

Q: Does it snow in Urbano Santos?

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

Q: Has the climate of Urbano Santos warmed?

Yes: Urbano Santos warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Urbano Santos?

The wettest day measured in Urbano Santos between 1940 and 2025 was 27 January 1988, with 162 mm of rain in 24 hours.

Q: What was the windiest day in Urbano Santos?

The windiest day measured in Urbano Santos between 1940 and 2025 was 9 November 1965, with winds reaching 25.7 km/h.

Q: What is the warmest month in Urbano Santos?

The warmest month in Urbano Santos is October (28.7 °C on average); the coldest is March (25.8 °C).

Q: How much does it rain in Urbano Santos?

Urbano Santos receives on average 1,552 mm of precipitation per year, spread over about 161 rainy days.

Q: Is it sunny in Urbano Santos?

Urbano Santos gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Urbano Santos (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 27.1 °C and it receives 1,552 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 October (28.7 °C on average) and the coldest is March (25.8 °C). Rainfall peaks in March.

Urbano Santos averages 0 frost days, 297 hot days (≥ 30 °C) and 161 rainy days per year.

Urbano Santos has warmed by +0.9 °C between 1940 and 2025, or +0.10 °C per decade. This trend is statistically significant.

The hottest day of the period reached 40.0 °C (on 14 December 2012) and the coldest 18.2 °C (on 27 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

Urbano SantosMaranhão

coords: -3.21°, -43.40°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthMarchWettest monthMarchDriest monthSeptember

Mean daily temperature

27.1°C

Average daily high

32.3°C

Average daily low

23.4°C

Annual rainfall

1,552mm

Sunshine / day

10.5h

Mean relative humidity

75%

Average peak wind

14.4km/h

Seasonal range

2.9°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

297 d/yr

Rainy days (≥ 1 mm)

161 d/yr

Annual snowfall

0.0 cm

Average feels-like high

36.2 °C

Average feels-like low

27.1 °C

Average peak gust

34.7 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

19.3 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+0.9 °C

since 1940

+0.1 °C per decade · r² = 0.24 · 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

40.0 °C

14 December 2012

Coldest day

18.2 °C

27 July 1975

Wettest day

162 mm

27 January 1988

Windiest day

25.7 km/h

9 November 1965

Strongest gust

63.4 km/h

10 November 1996

Hottest feels-like

42.5 °C

4 October 2009

Coldest feels-like

19.1 °C

4 July 1974

Sunniest day

12.0 h

2 January 1940

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	37.6 °C15 October 2025	20.4 °C14 July 2025	27.7 °C	1,348 mm	341
2024	36.8 °C27 December 2024	19.9 °C3 August 2024	27.6 °C	1,265 mm	337
2023	36.6 °C28 October 2023	20.5 °C21 July 2023	27.3 °C	1,266 mm	323
2022	37.4 °C29 October 2022	19.6 °C22 August 2022	27.0 °C	1,744 mm	318
2021	36.2 °C15 December 2021	19.3 °C3 August 2021	27.3 °C	1,317 mm	326
2020	37.1 °C15 October 2020	19.3 °C8 August 2020	27.4 °C	1,876 mm	341
2019	36.8 °C28 October 2019	20.8 °C22 June 2019	27.5 °C	1,856 mm	326
2018	37.6 °C21 November 2018	21.5 °C6 July 2018	27.3 °C	1,837 mm	312
2017	37.3 °C4 December 2017	19.7 °C16 July 2017	27.8 °C	1,463 mm	329
2016	37.9 °C4 November 2016	20.7 °C27 July 2016	28.1 °C	1,218 mm	347
2015	37.9 °C2 December 2015	21.2 °C14 August 2015	27.9 °C	1,070 mm	344
2014	37.9 °C1 January 2014	21.5 °C14 July 2014	27.7 °C	1,339 mm	334
2013	37.9 °C9 November 2013	21.9 °C2 August 2013	28.3 °C	1,134 mm	360
2012	40.0 °C14 December 2012	21.3 °C30 July 2012	28.4 °C	1,003 mm	354
2011	38.5 °C7 October 2011	20.8 °C28 July 2011	27.6 °C	1,962 mm	323
2010	38.4 °C15 October 2010	19.8 °C27 June 2010	28.3 °C	1,212 mm	353
2009	37.8 °C4 October 2009	21.1 °C27 June 2009	27.4 °C	2,148 mm	314
2008	37.8 °C5 December 2008	20.4 °C23 June 2008	27.4 °C	1,715 mm	314
2007	38.7 °C21 January 2007	21.5 °C26 June 2007	28.0 °C	1,361 mm	337
2006	37.9 °C8 October 2006	20.7 °C15 July 2006	27.6 °C	1,379 mm	322
2005	39.0 °C20 November 2005	21.2 °C22 July 2005	27.9 °C	1,247 mm	336
2004	37.5 °C15 October 2004	21.2 °C5 July 2004	27.4 °C	1,437 mm	315
2003	36.9 °C4 January 2003	21.1 °C6 July 2003	27.3 °C	1,559 mm	316
2002	37.0 °C22 October 2002	21.1 °C20 June 2002	27.3 °C	1,499 mm	315
2001	37.6 °C21 December 2001	20.5 °C5 August 2001	26.9 °C	1,518 mm	298
2000	36.6 °C28 November 2000	20.4 °C13 February 2000	26.7 °C	1,610 mm	288
1999	38.3 °C9 November 1999	20.4 °C11 July 1999	26.9 °C	1,907 mm	304
1998	37.2 °C30 October 1998	21.5 °C25 July 1998	27.8 °C	1,157 mm	345
1997	38.2 °C6 October 1997	20.8 °C16 May 1997	27.3 °C	1,254 mm	327
1996	37.4 °C30 December 1996	20.7 °C4 June 1996	27.0 °C	1,901 mm	308
1995	37.4 °C14 November 1995	20.8 °C14 July 1995	27.0 °C	1,643 mm	296
1994	36.7 °C1 December 1994	20.8 °C1 July 1994	26.9 °C	1,745 mm	287
1993	39.3 °C24 November 1993	20.7 °C18 July 1993	27.9 °C	946 mm	340
1992	37.1 °C13 January 1992	20.6 °C22 July 1992	27.6 °C	925 mm	336
1991	37.0 °C23 December 1991	21.0 °C21 July 1991	27.1 °C	1,487 mm	312
1990	37.2 °C30 November 1990	21.5 °C8 August 1990	27.3 °C	1,095 mm	333
1989	36.8 °C29 October 1989	21.0 °C23 May 1989	26.7 °C	1,785 mm	286
1988	38.0 °C24 November 1988	20.4 °C31 July 1988	27.0 °C	2,078 mm	300
1987	38.9 °C30 December 1987	21.8 °C5 May 1987	27.7 °C	1,028 mm	328
1986	36.7 °C20 October 1986	21.1 °C7 June 1986	26.7 °C	1,861 mm	271
1985	37.0 °C22 October 1985	20.5 °C25 June 1985	26.3 °C	2,454 mm	231
1984	37.1 °C17 December 1984	20.3 °C27 July 1984	26.9 °C	2,009 mm	291
1983	37.7 °C19 December 1983	22.0 °C26 July 1983	28.0 °C	695 mm	349
1982	36.9 °C20 December 1982	21.4 °C10 March 1982	27.1 °C	1,298 mm	315
1981	37.4 °C16 November 1981	20.3 °C28 July 1981	27.3 °C	1,328 mm	322
1980	37.7 °C1 December 1980	21.2 °C18 July 1980	27.1 °C	1,955 mm	315
1979	38.1 °C24 November 1979	20.1 °C18 June 1979	27.1 °C	1,552 mm	315
1978	35.6 °C2 October 1978	19.6 °C2 August 1978	26.6 °C	1,974 mm	293
1977	37.7 °C22 November 1977	20.5 °C22 July 1977	26.6 °C	2,245 mm	277
1976	35.3 °C12 December 1976	19.4 °C20 July 1976	26.4 °C	1,751 mm	285
1975	35.5 °C18 November 1975	18.2 °C27 July 1975	26.2 °C	2,006 mm	246
1974	36.4 °C26 November 1974	19.2 °C4 July 1974	25.8 °C	2,400 mm	216
1973	36.7 °C12 November 1973	20.4 °C20 January 1973	26.5 °C	2,341 mm	287
1972	37.0 °C16 November 1972	20.7 °C16 June 1972	26.7 °C	1,611 mm	298
1971	36.0 °C26 October 1971	20.0 °C22 August 1971	26.2 °C	2,096 mm	242
1970	35.8 °C8 January 1970	19.8 °C3 August 1970	26.8 °C	1,533 mm	301
1969	36.3 °C6 October 1969	20.2 °C29 July 1969	26.9 °C	1,249 mm	305
1968	36.2 °C19 October 1968	19.7 °C4 July 1968	26.4 °C	1,602 mm	258
1967	37.0 °C4 December 1967	19.9 °C28 June 1967	26.3 °C	2,096 mm	260
1966	38.5 °C25 October 1966	21.2 °C12 June 1966	26.9 °C	1,624 mm	260
1965	38.7 °C7 November 1965	21.0 °C27 July 1965	26.9 °C	1,240 mm	252
1964	37.9 °C8 November 1964	20.7 °C4 January 1964	26.5 °C	1,846 mm	204
1963	37.5 °C14 September 1963	20.6 °C17 June 1963	26.7 °C	1,660 mm	247
1962	37.9 °C3 October 1962	20.7 °C13 February 1962	26.7 °C	1,626 mm	271
1961	38.6 °C2 November 1961	21.0 °C16 February 1961	26.7 °C	1,893 mm	223
1960	38.2 °C10 October 1960	20.6 °C22 March 1960	26.8 °C	1,931 mm	246
1959	37.8 °C30 November 1959	21.1 °C18 May 1959	26.8 °C	1,897 mm	252
1958	39.0 °C20 November 1958	21.1 °C4 March 1958	27.9 °C	861 mm	351
1957	38.5 °C31 October 1957	20.8 °C18 March 1957	27.0 °C	1,496 mm	258
1956	37.9 °C26 October 1956	20.7 °C6 February 1956	26.9 °C	1,266 mm	272
1955	38.0 °C17 November 1955	20.9 °C9 February 1955	26.8 °C	1,711 mm	267
1954	37.8 °C17 October 1954	21.1 °C1 September 1954	26.8 °C	1,350 mm	266
1953	38.0 °C22 October 1953	21.1 °C6 March 1953	26.9 °C	1,480 mm	272
1952	38.2 °C20 October 1952	21.4 °C15 May 1952	26.8 °C	1,740 mm	256
1951	38.4 °C8 December 1951	21.4 °C27 April 1951	27.4 °C	926 mm	304
1950	38.5 °C29 November 1950	21.0 °C1 April 1950	26.9 °C	1,503 mm	251
1949	38.1 °C8 November 1949	21.1 °C9 February 1949	26.8 °C	1,867 mm	236
1948	38.3 °C7 November 1948	21.2 °C11 March 1948	27.1 °C	1,412 mm	284
1947	38.3 °C31 October 1947	21.3 °C29 March 1947	26.8 °C	1,730 mm	264
1946	39.1 °C12 December 1946	21.1 °C6 January 1946	27.6 °C	862 mm	326
1945	38.2 °C10 November 1945	20.5 °C15 July 1945	26.9 °C	1,332 mm	276
1944	38.5 °C3 November 1944	20.9 °C3 April 1944	27.0 °C	1,916 mm	247
1943	37.7 °C10 October 1943	20.6 °C20 March 1943	26.6 °C	1,447 mm	246
1942	38.6 °C20 November 1942	21.6 °C10 March 1942	27.6 °C	1,000 mm	335
1941	39.2 °C14 October 1941	21.7 °C13 March 1941	27.8 °C	780 mm	332
1940	37.6 °C3 October 1940	20.9 °C25 March 1940	26.7 °C	1,695 mm	242

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

32.8 °C

+0.5 °C

Hot days (≥ 30 °C)

341 d/yr

+44

Frost days (< 0 °C)

0 d/yr

Annual rainfall

1349 mm

-204 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	31.7 °C	+0.2 °C	224 mm	+22 mm
Feb	30.9 °C	+0.3 °C	343 mm	+80 mm
Mar	31.0 °C	+0.8 °C	374 mm	+21 mm
Apr	31.3 °C	+1.0 °C	167 mm	-153 mm
May	31.0 °C	+0.5 °C	141 mm	-60 mm
Jun	31.1 °C	+0.5 °C	22 mm	-41 mm
Jul	32.2 °C	+0.6 °C	17 mm	-14 mm
Aug	33.7 °C	+0.3 °C	10 mm	+2 mm
Sep	35.5 °C	+0.8 °C	1 mm	-5 mm
Oct	36.0 °C	+0.9 °C	1 mm	-9 mm
Nov	35.3 °C	+0.5 °C	2 mm	-19 mm
Dec	33.4 °C	-0.3 °C	47 mm	-30 mm

The year's extremes

Hottest day

37.6 °C

15 Oct 2025

Coldest day

20.4 °C

14 Jul 2025

Wettest day

101.7 mm

28 Feb 2025

Windiest day

22.6 km/h

18 Oct 2025

Strongest gust

50.8 km/h

11 Oct 2025

Hottest feels-like

40.7 °C

11 Sep 2025

Coldest feels-like

23.6 °C

14 Jul 2025

Sunniest day

12.0 h

1 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 Urbano Santos?

Urbano Santos has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 27.1 °C and it receives 1,552 mm of precipitation per year.

What is the hottest day ever recorded in Urbano Santos?

The hottest day measured in Urbano Santos between 1940 and 2025 was 14 December 2012, reaching 40.0 °C.

What is the coldest day in Urbano Santos?

The coldest day measured in Urbano Santos between 1940 and 2025 was 27 July 1975, at 18.2 °C.

Does it snow in Urbano Santos?

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

Has the climate of Urbano Santos warmed?

Yes: Urbano Santos warmed by +0.9 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Urbano Santos?

The wettest day measured in Urbano Santos between 1940 and 2025 was 27 January 1988, with 162 mm of rain in 24 hours.

What was the windiest day in Urbano Santos?

The windiest day measured in Urbano Santos between 1940 and 2025 was 9 November 1965, with winds reaching 25.7 km/h.

What is the warmest month in Urbano Santos?

The warmest month in Urbano Santos is October (28.7 °C on average); the coldest is March (25.8 °C).

How much does it rain in Urbano Santos?

Urbano Santos receives on average 1,552 mm of precipitation per year, spread over about 161 rainy days.

Is it sunny in Urbano Santos?

Urbano Santos gets on average 10.5 hours of sunshine per day, roughly 3,833 hours per year over 1940-2025.

Are there tropical nights in Urbano Santos?

Yes: Urbano Santos has on average 364 tropical nights per year (temperature staying above 20 °C), over 1940-2025.

What was the most extreme apparent temperature in Urbano Santos?

In Urbano Santos, between 1940 and 2025, the highest apparent temperature reached 42.5 °C on 4 October 2009, and the lowest was 19.1 °C on 4 July 1974.

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