Rio de Janeiro · Brazil

Rio de Janeiro in May: every year compared

In May, Rio de Janeiro averages highs of 27.2 °C and lows of 19.0 °C, with 74 mm of precipitation. The warmest May was 2024 (25.0 °C), the coldest 1968 (20.0 °C).

Avg. highAvg. high 27.2 °C

Avg. lowAvg. low 19.0 °C

PrecipitationPrecipitation 74 mm

Rainy daysRainy days 11

Day by day through May

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

Normal high and low, day by dayNormal 1991–2020

Every May in Rio de Janeiro, ranked

86 months of May since 1940. The last one, 2025, ranks 27 of 86 (±0.0 °C vs normal).

194019832025

2025 · 22.6 °C · ±0.0 °C vs normal · rank 27 of 86

Warmest years

1202425.0 °C
2201924.8 °C
3198424.6 °C
4199424.4 °C
5198624.1 °C

Coldest years

1196820.0 °C
2195620.3 °C
3196020.6 °C
4194820.7 °C
5195720.9 °C

All 86 years in a table

Year	Mean temperature	Daytime highs	Night lows	Precipitation	Hot days (30 °C+)	Rainy days
2025	22.6 °C	27.7 °C	18.8 °C	32 mm	7 days	7 days
2024	25.0 °C	30.6 °C	21.0 °C	39 mm	21 days	8 days
2023	22.1 °C	26.9 °C	18.5 °C	50 mm	3 days	8 days
2022	22.0 °C	27.1 °C	18.0 °C	29 mm	5 days	10 days
2021	22.4 °C	27.3 °C	18.6 °C	72 mm	6 days	10 days
2020	21.5 °C	27.0 °C	17.1 °C	84 mm	4 days	8 days
2019	24.8 °C	29.4 °C	21.3 °C	70 mm	14 days	9 days
2018	22.8 °C	27.8 °C	18.9 °C	54 mm	7 days	10 days
2017	22.5 °C	26.8 °C	19.1 °C	74 mm	1 day	7 days
2016	22.6 °C	27.1 °C	19.0 °C	51 mm	3 days	14 days
2015	22.8 °C	27.4 °C	19.2 °C	68 mm	6 days	13 days
2014	22.5 °C	27.7 °C	18.4 °C	45 mm	7 days	9 days
2013	22.3 °C	27.4 °C	18.2 °C	71 mm	7 days	10 days
2012	21.9 °C	26.6 °C	18.1 °C	87 mm	4 days	13 days
2011	21.6 °C	26.0 °C	18.0 °C	56 mm	3 days	12 days
2010	22.8 °C	27.7 °C	18.9 °C	48 mm	7 days	8 days
2009	22.8 °C	27.9 °C	18.9 °C	86 mm	7 days	8 days
2008	22.1 °C	27.2 °C	18.2 °C	59 mm	9 days	10 days
2007	22.1 °C	26.9 °C	18.6 °C	83 mm	6 days	13 days
2006	21.8 °C	26.0 °C	18.9 °C	95 mm	4 days	15 days
2005	23.7 °C	28.4 °C	20.1 °C	53 mm	11 days	8 days
2004	22.6 °C	26.4 °C	19.8 °C	81 mm	5 days	15 days
2003	22.8 °C	27.5 °C	19.1 °C	76 mm	4 days	9 days
2002	24.0 °C	28.5 °C	20.6 °C	88 mm	9 days	13 days
2001	22.8 °C	27.1 °C	19.1 °C	105 mm	8 days	11 days
2000	21.7 °C	26.4 °C	17.8 °C	33 mm	8 days	9 days
1999	21.2 °C	25.7 °C	17.5 °C	49 mm	3 days	10 days
1998	22.2 °C	26.1 °C	18.9 °C	119 mm	4 days	11 days
1997	21.9 °C	26.8 °C	18.0 °C	66 mm	6 days	13 days
1996	21.3 °C	25.8 °C	17.8 °C	80 mm	2 days	13 days
1995	22.7 °C	26.9 °C	19.6 °C	161 mm	5 days	14 days
1994	24.4 °C	28.7 °C	21.5 °C	68 mm	13 days	14 days
1993	22.8 °C	27.0 °C	19.1 °C	58 mm	6 days	10 days
1992	24.1 °C	28.5 °C	20.9 °C	73 mm	11 days	12 days
1991	22.8 °C	26.8 °C	19.1 °C	72 mm	2 days	9 days
1990	22.1 °C	26.4 °C	18.4 °C	85 mm	1 day	11 days
1989	22.1 °C	25.9 °C	18.6 °C	50 mm	3 days	10 days
1988	23.0 °C	26.6 °C	20.3 °C	161 mm	4 days	19 days
1987	23.1 °C	26.6 °C	20.0 °C	59 mm	8 days	13 days
1986	24.1 °C	28.0 °C	20.9 °C	68 mm	6 days	12 days
1985	22.2 °C	26.2 °C	18.9 °C	42 mm	1 day	9 days
1984	24.6 °C	29.0 °C	21.2 °C	35 mm	11 days	9 days
1983	24.0 °C	27.7 °C	21.2 °C	116 mm	7 days	13 days
1982	21.5 °C	25.5 °C	18.0 °C	59 mm	2 days	8 days
1981	22.8 °C	27.0 °C	19.2 °C	58 mm	3 days	10 days
1980	23.4 °C	28.0 °C	19.8 °C	65 mm	5 days	12 days
1979	23.0 °C	27.4 °C	19.3 °C	68 mm	6 days	9 days
1978	21.6 °C	25.7 °C	17.9 °C	116 mm	3 days	13 days
1977	22.4 °C	27.0 °C	18.7 °C	49 mm	1 day	10 days
1976	22.2 °C	26.1 °C	19.2 °C	89 mm	2 days	18 days
1975	21.3 °C	25.3 °C	17.8 °C	92 mm	2 days	12 days
1974	22.6 °C	27.1 °C	18.9 °C	51 mm	3 days	13 days
1973	22.4 °C	26.8 °C	18.8 °C	76 mm	5 days	12 days
1972	22.4 °C	27.3 °C	18.7 °C	44 mm	3 days	5 days
1971	22.2 °C	26.3 °C	18.8 °C	144 mm	1 day	16 days
1970	23.1 °C	27.9 °C	19.6 °C	38 mm	6 days	11 days
1969	22.6 °C	27.4 °C	18.6 °C	29 mm	4 days	7 days
1968	20.0 °C	24.9 °C	15.9 °C	32 mm	1 day	9 days
1967	23.0 °C	27.2 °C	18.6 °C	31 mm	2 days	9 days
1966	21.3 °C	25.1 °C	18.3 °C	144 mm	2 days	17 days
1965	21.6 °C	25.4 °C	18.6 °C	124 mm	2 days	15 days
1964	21.3 °C	25.2 °C	18.3 °C	55 mm	1 day	11 days
1963	21.1 °C	26.0 °C	17.3 °C	42 mm	3 days	7 days
1962	21.0 °C	25.0 °C	17.6 °C	90 mm	1 day	13 days
1961	22.2 °C	25.8 °C	19.7 °C	202 mm	2 days	18 days
1960	20.6 °C	24.6 °C	17.5 °C	93 mm	1 day	11 days
1959	21.9 °C	26.0 °C	18.8 °C	82 mm	2 days	12 days
1958	21.5 °C	25.3 °C	18.7 °C	142 mm	1 day	17 days
1957	20.9 °C	25.2 °C	17.6 °C	46 mm	0 days	15 days
1956	20.3 °C	23.5 °C	17.8 °C	103 mm	1 day	17 days
1955	20.9 °C	25.5 °C	17.4 °C	52 mm	4 days	9 days
1954	22.1 °C	25.8 °C	19.5 °C	183 mm	0 days	20 days
1953	21.9 °C	26.0 °C	18.7 °C	70 mm	4 days	16 days
1952	21.2 °C	26.1 °C	17.2 °C	21 mm	0 days	6 days
1951	21.1 °C	25.4 °C	17.6 °C	66 mm	1 day	9 days
1950	22.0 °C	26.3 °C	19.0 °C	88 mm	1 day	14 days
1949	21.4 °C	25.9 °C	18.1 °C	100 mm	2 days	12 days
1948	20.7 °C	25.1 °C	17.4 °C	142 mm	2 days	11 days
1947	22.0 °C	26.0 °C	19.1 °C	96 mm	2 days	15 days
1946	21.7 °C	26.3 °C	18.4 °C	111 mm	2 days	12 days
1945	21.1 °C	25.2 °C	17.9 °C	57 mm	0 days	11 days
1944	21.3 °C	26.7 °C	17.1 °C	18 mm	0 days	6 days
1943	21.3 °C	25.8 °C	18.3 °C	80 mm	1 day	17 days
1942	21.2 °C	25.4 °C	18.0 °C	112 mm	6 days	12 days
1941	22.6 °C	27.0 °C	19.5 °C	75 mm	9 days	10 days
1940	22.7 °C	28.1 °C	19.2 °C	42 mm	3 days	7 days

May records

Hottest day

36.8 °C

May 2, 2024 estimate

Coldest night

11.5 °C

May 31, 1979 estimate

Wettest day

72 mm

May 11, 1961 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 May?

Highs average 27.2 °C and lows 19.0 °C. A typical May brings 6 hot days (30 °C or more) and 0 frost days.

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

About 74 mm falls in May, over some 11 days with at least 1 mm. The wettest May was 1961 (202 mm), the driest 1944 (18 mm).

What was the warmest May in Rio de Janeiro?

2024, with a mean temperature of 25.0 °C. The coldest was 1968 (20.0 °C). The last one, 2025, ranks 27 of 86.