Rio de Janeiro · Brazil

Rio de Janeiro in August: every year compared

In August, Rio de Janeiro averages highs of 27.2 °C and lows of 17.5 °C, with 44 mm of precipitation. The warmest August was 2002 (24.0 °C), the coldest 1956 (18.6 °C).

Avg. highAvg. high 27.2 °C

Avg. lowAvg. low 17.5 °C

PrecipitationPrecipitation 44 mm

Rainy daysRainy days 8

Day by day through August

Normal high and low for each day of August in Rio de Janeiro.

Normal high and low, day by dayNormal 1991–2020

Every August in Rio de Janeiro, ranked

86 months of August since 1940. The last one, 2025, ranks 46 of 86 (−0.5 °C vs normal).

194019832025

2025 · 21.3 °C · −0.5 °C vs normal · rank 46 of 86

Warmest years

1200224.0 °C
2199523.5 °C
3200523.3 °C
4199823.2 °C
5194523.0 °C

Coldest years

1195618.6 °C
2194218.8 °C
3194319.1 °C
4196819.8 °C
5195119.8 °C

All 86 years in a table

Year	Mean temperature	Daytime highs	Night lows	Precipitation	Hot days (30 °C+)	Rainy days
2025	21.3 °C	26.5 °C	17.1 °C	17 mm	5 days	8 days
2024	21.7 °C	28.5 °C	16.2 °C	63 mm	13 days	4 days
2023	22.5 °C	27.9 °C	18.7 °C	95 mm	9 days	11 days
2022	21.1 °C	26.3 °C	17.1 °C	59 mm	6 days	10 days
2021	21.7 °C	27.2 °C	17.4 °C	66 mm	9 days	10 days
2020	21.5 °C	26.9 °C	17.1 °C	48 mm	7 days	4 days
2019	21.4 °C	26.6 °C	17.3 °C	69 mm	8 days	11 days
2018	21.5 °C	25.8 °C	18.1 °C	85 mm	5 days	12 days
2017	21.1 °C	26.1 °C	17.0 °C	54 mm	4 days	11 days
2016	22.3 °C	28.2 °C	17.6 °C	48 mm	10 days	9 days
2015	22.8 °C	28.9 °C	17.7 °C	20 mm	12 days	4 days
2014	21.5 °C	27.1 °C	16.9 °C	51 mm	11 days	8 days
2013	21.5 °C	27.1 °C	16.9 °C	21 mm	8 days	7 days
2012	21.5 °C	27.1 °C	16.8 °C	29 mm	1 day	4 days
2011	22.1 °C	27.7 °C	18.0 °C	49 mm	10 days	10 days
2010	21.3 °C	27.0 °C	16.9 °C	23 mm	8 days	9 days
2009	21.8 °C	26.9 °C	17.9 °C	54 mm	6 days	9 days
2008	22.8 °C	28.3 °C	18.5 °C	55 mm	11 days	7 days
2007	21.9 °C	27.6 °C	17.5 °C	24 mm	7 days	6 days
2006	22.7 °C	28.1 °C	18.9 °C	28 mm	14 days	5 days
2005	23.3 °C	29.0 °C	19.2 °C	14 mm	11 days	4 days
2004	21.3 °C	26.1 °C	17.5 °C	22 mm	2 days	6 days
2003	20.7 °C	25.4 °C	17.1 °C	107 mm	4 days	12 days
2002	24.0 °C	29.9 °C	19.6 °C	15 mm	17 days	3 days
2001	22.3 °C	28.1 °C	17.1 °C	18 mm	5 days	6 days
2000	20.9 °C	25.9 °C	16.5 °C	91 mm	6 days	10 days
1999	20.3 °C	26.1 °C	15.7 °C	28 mm	7 days	5 days
1998	23.2 °C	28.0 °C	19.2 °C	81 mm	10 days	12 days
1997	22.0 °C	29.0 °C	16.7 °C	32 mm	16 days	5 days
1996	20.1 °C	25.5 °C	15.8 °C	38 mm	2 days	6 days
1995	23.5 °C	30.0 °C	18.7 °C	45 mm	16 days	6 days
1994	21.1 °C	26.1 °C	17.5 °C	35 mm	6 days	9 days
1993	20.9 °C	25.6 °C	17.0 °C	35 mm	5 days	9 days
1992	21.0 °C	25.2 °C	17.7 °C	58 mm	2 days	11 days
1991	21.3 °C	26.3 °C	17.1 °C	30 mm	6 days	5 days
1990	20.2 °C	24.1 °C	16.7 °C	56 mm	2 days	10 days
1989	21.6 °C	25.9 °C	17.9 °C	53 mm	5 days	8 days
1988	21.1 °C	26.3 °C	16.7 °C	4 mm	3 days	2 days
1987	21.3 °C	26.1 °C	17.1 °C	24 mm	8 days	8 days
1986	22.1 °C	26.1 °C	18.9 °C	110 mm	2 days	14 days
1985	21.9 °C	27.6 °C	17.1 °C	45 mm	5 days	4 days
1984	20.9 °C	24.5 °C	17.9 °C	122 mm	5 days	15 days
1983	20.8 °C	25.5 °C	16.8 °C	38 mm	7 days	6 days
1982	22.5 °C	27.0 °C	18.7 °C	95 mm	6 days	9 days
1981	21.3 °C	26.0 °C	17.4 °C	77 mm	2 days	11 days
1980	22.3 °C	26.9 °C	18.7 °C	71 mm	6 days	10 days
1979	22.4 °C	27.7 °C	17.9 °C	102 mm	7 days	10 days
1978	21.2 °C	26.1 °C	16.7 °C	61 mm	3 days	9 days
1977	22.9 °C	27.6 °C	19.0 °C	34 mm	9 days	12 days
1976	21.2 °C	25.6 °C	17.7 °C	105 mm	3 days	12 days
1975	23.0 °C	28.9 °C	18.3 °C	10 mm	12 days	3 days
1974	21.8 °C	27.2 °C	17.3 °C	33 mm	10 days	5 days
1973	21.4 °C	25.4 °C	18.2 °C	63 mm	0 days	12 days
1972	21.8 °C	26.3 °C	18.1 °C	124 mm	5 days	13 days
1971	21.2 °C	25.7 °C	17.6 °C	72 mm	3 days	15 days
1970	20.6 °C	25.4 °C	16.8 °C	102 mm	3 days	10 days
1969	21.4 °C	26.5 °C	17.5 °C	35 mm	7 days	10 days
1968	19.8 °C	24.4 °C	15.9 °C	67 mm	0 days	11 days
1967	22.7 °C	27.7 °C	18.2 °C	12 mm	4 days	3 days
1966	20.3 °C	24.9 °C	16.9 °C	96 mm	4 days	10 days
1965	21.6 °C	27.3 °C	17.3 °C	41 mm	6 days	4 days
1964	20.6 °C	25.5 °C	16.7 °C	31 mm	2 days	7 days
1963	21.5 °C	27.8 °C	17.1 °C	55 mm	12 days	4 days
1962	20.4 °C	25.4 °C	16.9 °C	47 mm	4 days	10 days
1961	22.3 °C	28.1 °C	17.8 °C	7 mm	9 days	3 days
1960	21.2 °C	26.4 °C	17.3 °C	31 mm	3 days	9 days
1959	21.0 °C	26.0 °C	17.2 °C	74 mm	7 days	12 days
1958	22.0 °C	27.6 °C	17.9 °C	30 mm	7 days	7 days
1957	20.9 °C	26.6 °C	16.8 °C	27 mm	6 days	7 days
1956	18.6 °C	23.3 °C	14.9 °C	65 mm	0 days	11 days
1955	20.7 °C	26.6 °C	16.4 °C	17 mm	9 days	6 days
1954	20.7 °C	26.1 °C	16.5 °C	41 mm	2 days	8 days
1953	21.4 °C	27.2 °C	17.0 °C	61 mm	7 days	9 days
1952	21.8 °C	27.1 °C	17.9 °C	21 mm	2 days	5 days
1951	19.8 °C	25.3 °C	16.0 °C	46 mm	3 days	10 days
1950	21.3 °C	27.3 °C	16.8 °C	39 mm	10 days	7 days
1949	20.6 °C	25.8 °C	16.7 °C	71 mm	2 days	12 days
1948	20.4 °C	25.5 °C	16.7 °C	33 mm	5 days	11 days
1947	19.9 °C	25.2 °C	15.9 °C	56 mm	2 days	11 days
1946	20.9 °C	26.1 °C	17.2 °C	38 mm	1 day	7 days
1945	23.0 °C	28.7 °C	18.8 °C	82 mm	10 days	9 days
1944	21.4 °C	28.2 °C	16.2 °C	14 mm	11 days	4 days
1943	19.1 °C	23.4 °C	16.0 °C	114 mm	1 day	13 days
1942	18.8 °C	24.1 °C	14.9 °C	87 mm	1 day	9 days
1941	21.7 °C	26.9 °C	18.2 °C	94 mm	6 days	10 days
1940	21.8 °C	28.2 °C	17.9 °C	36 mm	9 days	7 days

August records

Hottest day

38.5 °C

August 24, 2023 estimate

Coldest night

10.3 °C

August 4, 1947 estimate

Wettest day

48 mm

August 21, 1945 estimate

The weather on your birthday in Rio de Janeiro

Any day since 1940: high, low, rain, snow, and how warm it was compared with the same date in every other year.

Questions & answers

How warm is Rio de Janeiro in August?

Highs average 27.2 °C and lows 17.5 °C. A typical August brings 8 hot days (30 °C or more) and 0 frost days.

Does it rain a lot in Rio de Janeiro in August?

About 44 mm falls in August, over some 8 days with at least 1 mm. The wettest August was 1972 (124 mm), the driest 1988 (4 mm).

What was the warmest August in Rio de Janeiro?

2002, with a mean temperature of 24.0 °C. The coldest was 1956 (18.6 °C). The last one, 2025, ranks 46 of 86.