Porto Grande climate — normals and trends

Q: What is the climate of Porto Grande?

Porto Grande has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.8 °C and it receives 1,711 mm of precipitation per year.

Q: What is the hottest day ever recorded in Porto Grande?

The hottest day measured in Porto Grande between 1940 and 2025 was 1 November 2012, reaching 39.1 °C.

Q: What is the coldest day in Porto Grande?

The coldest day measured in Porto Grande between 1940 and 2025 was 18 August 1974, at 19.1 °C.

Q: Does it snow in Porto Grande?

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

Q: Has the climate of Porto Grande warmed?

Yes: Porto Grande warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

Q: What is the wettest day in Porto Grande?

The wettest day measured in Porto Grande between 1940 and 2025 was 26 May 1975, with 224 mm of rain in 24 hours.

Q: What was the windiest day in Porto Grande?

The windiest day measured in Porto Grande between 1940 and 2025 was 1 October 1978, with winds reaching 22.3 km/h.

Q: What is the warmest month in Porto Grande?

The warmest month in Porto Grande is October (28.0 °C on average); the coldest is February (24.8 °C).

Q: How much does it rain in Porto Grande?

Porto Grande receives on average 1,711 mm of precipitation per year, spread over about 245 rainy days.

Q: Is it sunny in Porto Grande?

Porto Grande gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

Porto Grande (Brazil) has a tropical savanna climate (Aw) under the Köppen-Geiger classification. Its mean annual temperature is 25.8 °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 October (28.0 °C on average) and the coldest is February (24.8 °C). Rainfall peaks in April.

Porto Grande averages 0 frost days, 207 hot days (≥ 30 °C) and 245 rainy days per year.

Porto Grande has warmed by +2.0 °C between 1940 and 2025, or +0.23 °C per decade. This trend is statistically significant.

The hottest day of the period reached 39.1 °C (on 1 November 2012) and the coldest 19.1 °C (on 18 August 1974).

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

Porto GrandeAmapá

coords: 0.71°, -51.41°
period: 1940–2025 · 86 yrs

AwTropical savannaWarmest monthOctoberColdest monthFebruaryWettest monthAprilDriest monthOctober

Mean daily temperature

25.8°C

Average daily high

30.7°C

Average daily low

22.6°C

Annual rainfall

1,711mm

Sunshine / day

9.3h

Mean relative humidity

83%

Average peak wind

12.6km/h

Seasonal range

3.2°C

Frost days (< 0 °C)

0 d/yr

Hot days (≥ 30 °C)

207 d/yr

Rainy days (≥ 1 mm)

245 d/yr

Annual snowfall

0.0 cm

Average feels-like high

35.4 °C

Average feels-like low

26.5 °C

Average peak gust

33.3 km/h

Tropical nights (≥ 20 °C)

364 d/yr

Solar radiation

16.8 MJ/m²

Has the climate changed?

One stripe per year, 1940 to 2025

+2.0 °C

since 1940

+0.2 °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

39.1 °C

1 November 2012

Coldest day

19.1 °C

18 August 1974

Wettest day

224 mm

26 May 1975

Windiest day

22.3 km/h

1 October 1978

Strongest gust

60.8 km/h

29 December 2015

Hottest feels-like

43.4 °C

1 November 2012

Coldest feels-like

21.5 °C

18 August 1974

Sunniest day

11.8 h

18 November 2025

Year	Hottest day	Coldest day	Annual mean	Rainfall	Hot days
2025	37.0 °C31 October 2025	19.8 °C3 August 2025	26.7 °C	2,080 mm	271
2024	36.4 °C5 November 2024	20.8 °C8 July 2024	27.1 °C	2,151 mm	317
2023	37.7 °C31 October 2023	21.3 °C11 August 2023	27.0 °C	1,471 mm	294
2022	36.7 °C25 October 2022	21.1 °C17 June 2022	26.2 °C	2,651 mm	250
2021	36.7 °C28 September 2021	21.1 °C26 June 2021	26.5 °C	2,331 mm	262
2020	36.7 °C21 October 2020	20.9 °C23 January 2020	26.7 °C	1,721 mm	283
2019	37.0 °C2 November 2019	20.9 °C16 July 2019	26.7 °C	1,864 mm	258
2018	36.4 °C15 October 2018	20.2 °C13 July 2018	26.3 °C	2,248 mm	259
2017	36.7 °C13 November 2017	20.7 °C2 July 2017	26.8 °C	1,749 mm	285
2016	37.1 °C20 October 2016	20.3 °C21 August 2016	27.3 °C	1,666 mm	309
2015	37.7 °C8 October 2015	20.7 °C5 July 2015	27.4 °C	1,687 mm	301
2014	37.5 °C2 November 2014	21.2 °C29 July 2014	26.9 °C	2,000 mm	285
2013	38.4 °C26 September 2013	20.6 °C4 June 2013	26.9 °C	1,681 mm	293
2012	39.1 °C1 November 2012	20.6 °C21 June 2012	27.0 °C	1,222 mm	296
2011	37.4 °C16 October 2011	20.7 °C2 August 2011	26.6 °C	2,003 mm	268
2010	37.0 °C10 October 2010	21.3 °C27 October 2010	27.0 °C	1,635 mm	311
2009	37.3 °C27 October 2009	20.5 °C24 July 2009	26.7 °C	1,682 mm	267
2008	36.8 °C12 November 2008	20.4 °C4 August 2008	26.3 °C	1,868 mm	262
2007	36.2 °C24 October 2007	19.7 °C23 July 2007	26.4 °C	1,794 mm	284
2006	36.1 °C28 October 2006	21.0 °C27 October 2006	26.3 °C	1,630 mm	264
2005	36.7 °C22 November 2005	21.0 °C20 August 2005	26.8 °C	1,560 mm	279
2004	37.0 °C19 November 2004	19.9 °C2 August 2004	26.5 °C	1,594 mm	268
2003	36.4 °C4 November 2003	20.7 °C2 September 2003	26.2 °C	1,723 mm	255
2002	34.8 °C2 November 2002	20.4 °C7 September 2002	26.0 °C	1,622 mm	246
2001	36.3 °C23 November 2001	19.7 °C19 March 2001	26.1 °C	1,540 mm	234
2000	35.5 °C4 November 2000	19.5 °C11 August 2000	25.7 °C	1,830 mm	210
1999	35.8 °C25 November 1999	20.2 °C12 July 1999	25.9 °C	1,674 mm	232
1998	36.4 °C21 September 1998	21.1 °C17 July 1998	26.6 °C	1,328 mm	283
1997	36.6 °C29 October 1997	20.3 °C1 July 1997	26.2 °C	1,358 mm	271
1996	36.3 °C30 October 1996	20.5 °C16 October 1996	26.0 °C	1,832 mm	229
1995	36.6 °C21 November 1995	20.3 °C14 July 1995	26.2 °C	1,343 mm	251
1994	35.6 °C5 October 1994	19.7 °C30 June 1994	26.0 °C	1,396 mm	232
1993	35.9 °C4 October 1993	20.6 °C19 February 1993	26.3 °C	1,133 mm	249
1992	34.6 °C30 September 1992	20.6 °C17 July 1992	26.2 °C	1,017 mm	254
1991	34.7 °C6 December 1991	20.7 °C3 October 1991	25.8 °C	1,441 mm	204
1990	35.6 °C26 September 1990	19.9 °C7 July 1990	26.0 °C	1,267 mm	233
1989	35.9 °C14 October 1989	19.8 °C28 July 1989	25.5 °C	1,755 mm	169
1988	35.6 °C12 November 1988	21.0 °C14 July 1988	26.0 °C	1,677 mm	229
1987	36.9 °C9 December 1987	20.4 °C9 July 1987	26.5 °C	1,281 mm	251
1986	36.0 °C9 October 1986	20.4 °C22 February 1986	25.6 °C	1,658 mm	182
1985	35.1 °C22 October 1985	20.1 °C5 July 1985	25.3 °C	1,658 mm	158
1984	34.7 °C1 November 1984	20.1 °C31 August 1984	25.4 °C	1,658 mm	174
1983	36.1 °C8 September 1983	20.5 °C21 July 1983	26.5 °C	969 mm	288
1982	35.4 °C13 October 1982	19.4 °C24 June 1982	25.7 °C	1,777 mm	195
1981	35.3 °C25 November 1981	20.1 °C24 August 1981	25.9 °C	1,361 mm	237
1980	36.0 °C7 October 1980	20.7 °C28 October 1980	25.8 °C	1,417 mm	216
1979	35.6 °C16 October 1979	20.0 °C15 August 1979	25.6 °C	1,680 mm	198
1978	34.1 °C6 October 1978	20.2 °C26 July 1978	25.3 °C	1,796 mm	173
1977	34.7 °C28 October 1977	19.7 °C3 June 1977	25.3 °C	1,870 mm	179
1976	34.9 °C3 October 1976	19.1 °C14 October 1976	25.2 °C	2,030 mm	162
1975	33.6 °C30 October 1975	20.0 °C24 July 1975	24.9 °C	2,232 mm	137
1974	35.1 °C26 October 1974	19.1 °C18 August 1974	25.0 °C	2,042 mm	160
1973	35.9 °C15 October 1973	20.0 °C9 August 1973	25.6 °C	2,154 mm	198
1972	35.5 °C17 October 1972	19.2 °C15 September 1972	25.5 °C	1,582 mm	192
1971	35.9 °C7 November 1971	19.2 °C28 July 1971	25.4 °C	1,687 mm	197
1970	35.9 °C22 October 1970	20.6 °C29 September 1970	25.6 °C	2,031 mm	217
1969	36.2 °C11 November 1969	20.7 °C5 October 1969	26.0 °C	1,525 mm	238
1968	36.7 °C13 October 1968	20.2 °C11 July 1968	25.4 °C	1,586 mm	169
1967	35.0 °C5 November 1967	19.9 °C10 June 1967	25.2 °C	1,786 mm	169
1966	35.5 °C29 October 1966	20.8 °C9 February 1966	25.2 °C	1,841 mm	146
1965	35.1 °C28 October 1965	20.5 °C17 June 1965	25.2 °C	1,717 mm	138
1964	35.6 °C19 November 1964	20.1 °C22 October 1964	25.1 °C	1,829 mm	132
1963	35.5 °C22 October 1963	20.9 °C2 February 1963	25.1 °C	1,776 mm	122
1962	35.9 °C15 November 1962	20.3 °C20 June 1962	25.3 °C	1,861 mm	142
1961	34.0 °C19 September 1961	20.5 °C21 June 1961	24.9 °C	2,054 mm	127
1960	35.3 °C29 October 1960	20.5 °C23 March 1960	25.1 °C	2,125 mm	133
1959	35.9 °C16 October 1959	19.7 °C5 August 1959	25.2 °C	1,955 mm	133
1958	36.8 °C4 November 1958	19.9 °C16 July 1958	26.0 °C	1,445 mm	213
1957	36.0 °C1 November 1957	20.1 °C26 September 1957	25.4 °C	1,700 mm	149
1956	35.5 °C6 November 1956	19.4 °C13 May 1956	24.7 °C	2,170 mm	99
1955	35.9 °C15 October 1955	20.4 °C30 July 1955	25.1 °C	1,933 mm	121
1954	34.9 °C28 September 1954	20.0 °C24 July 1954	25.2 °C	1,584 mm	148
1953	36.1 °C3 November 1953	20.3 °C11 September 1953	25.4 °C	1,784 mm	142
1952	35.9 °C5 November 1952	20.6 °C10 September 1952	25.3 °C	1,881 mm	132
1951	35.9 °C31 October 1951	20.4 °C14 February 1951	25.6 °C	1,519 mm	158
1950	36.7 °C8 November 1950	20.1 °C28 September 1950	25.4 °C	1,570 mm	142
1949	35.0 °C31 October 1949	20.3 °C13 August 1949	24.9 °C	1,840 mm	103
1948	35.4 °C25 October 1948	20.6 °C3 June 1948	25.2 °C	1,662 mm	123
1947	35.8 °C30 October 1947	20.7 °C31 July 1947	25.1 °C	1,840 mm	121
1946	35.5 °C30 October 1946	20.2 °C26 May 1946	25.2 °C	1,505 mm	138
1945	36.2 °C3 November 1945	20.4 °C12 June 1945	25.6 °C	1,301 mm	164
1944	36.0 °C31 October 1944	20.4 °C27 June 1944	25.6 °C	1,416 mm	167
1943	34.7 °C21 October 1943	20.2 °C18 May 1943	24.5 °C	2,409 mm	112
1942	34.8 °C27 November 1942	20.2 °C20 October 1942	24.8 °C	1,860 mm	116
1941	36.5 °C11 November 1941	20.6 °C27 May 1941	25.7 °C	1,168 mm	160
1940	35.9 °C8 November 1940	20.4 °C21 August 1940	25.4 °C	1,373 mm	158

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

31.5 °C

+0.8 °C

Hot days (≥ 30 °C)

271 d/yr

+64

Frost days (< 0 °C)

0 d/yr

Annual rainfall

2080 mm

+369 mm

Month by month

	High	vs. normal	Precipitation	vs. normal
Jan	29.7 °C	+0.6 °C	269 mm	+53 mm
Feb	29.3 °C	+0.5 °C	339 mm	+107 mm
Mar	29.1 °C	+0.1 °C	404 mm	+156 mm
Apr	29.9 °C	+0.8 °C	364 mm	+97 mm
May	30.4 °C	+1.3 °C	272 mm	+23 mm
Jun	30.4 °C	+1.0 °C	128 mm	-15 mm
Jul	31.2 °C	+1.2 °C	88 mm	-17 mm
Aug	32.3 °C	+1.0 °C	60 mm	+7 mm
Sep	34.6 °C	+1.6 °C	7 mm	-16 mm
Oct	34.9 °C	+0.7 °C	17 mm	+1 mm
Nov	34.5 °C	+0.9 °C	28 mm	-13 mm
Dec	32.1 °C	+0.9 °C	104 mm	-15 mm

The year's extremes

Hottest day

37.0 °C

31 Oct 2025

Coldest day

19.8 °C

3 Aug 2025

Wettest day

83.5 mm

16 May 2025

Windiest day

19.2 km/h

28 Oct 2025

Strongest gust

46.8 km/h

28 Oct 2025

Hottest feels-like

41.2 °C

20 Oct 2025

Coldest feels-like

22.8 °C

3 Aug 2025

Sunniest day

11.8 h

18 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 Porto Grande?

Porto Grande has a tropical savanna climate (Köppen Aw). Over 1940-2025, the average annual temperature is 25.8 °C and it receives 1,711 mm of precipitation per year.

What is the hottest day ever recorded in Porto Grande?

The hottest day measured in Porto Grande between 1940 and 2025 was 1 November 2012, reaching 39.1 °C.

What is the coldest day in Porto Grande?

The coldest day measured in Porto Grande between 1940 and 2025 was 18 August 1974, at 19.1 °C.

Does it snow in Porto Grande?

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

Has the climate of Porto Grande warmed?

Yes: Porto Grande warmed by +2.0 °C between 1940 and 2025, a statistically significant trend.

What is the wettest day in Porto Grande?

The wettest day measured in Porto Grande between 1940 and 2025 was 26 May 1975, with 224 mm of rain in 24 hours.

What was the windiest day in Porto Grande?

The windiest day measured in Porto Grande between 1940 and 2025 was 1 October 1978, with winds reaching 22.3 km/h.

What is the warmest month in Porto Grande?

The warmest month in Porto Grande is October (28.0 °C on average); the coldest is February (24.8 °C).

How much does it rain in Porto Grande?

Porto Grande receives on average 1,711 mm of precipitation per year, spread over about 245 rainy days.

Is it sunny in Porto Grande?

Porto Grande gets on average 9.3 hours of sunshine per day, roughly 3,395 hours per year over 1940-2025.

Are there tropical nights in Porto Grande?

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

What was the most extreme apparent temperature in Porto Grande?

In Porto Grande, between 1940 and 2025, the highest apparent temperature reached 43.4 °C on 1 November 2012, and the lowest was 21.5 °C on 18 August 1974.

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