Rio de Janeiro · Brazil

Rio de Janeiro in December: every year compared

In December, Rio de Janeiro averages highs of 30.9 °C and lows of 23.2 °C, with 237 mm of precipitation. The warmest December was 2012 (28.6 °C), the coldest 1967 (23.7 °C).

Avg. highAvg. high 30.9 °C

Avg. lowAvg. low 23.2 °C

PrecipitationPrecipitation 237 mm

Rainy daysRainy days 21

Day by day through December

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

Normal high and low, day by dayNormal 1991–2020

Every December in Rio de Janeiro, ranked

86 months of December since 1940. The last one, 2025, ranks 9 of 86 (+0.7 °C vs normal).

194019832025

2025 · 27.3 °C · +0.7 °C vs normal · rank 9 of 86

Warmest years

1201228.6 °C
2201428.0 °C
3201528.0 °C
4199127.8 °C
5197027.6 °C

Coldest years

1196723.7 °C
2195623.8 °C
3194923.8 °C
4195123.9 °C
5194323.9 °C

All 86 years in a table

Year	Mean temperature	Daytime highs	Night lows	Precipitation	Hot days (30 °C+)	Rainy days
2025	27.3 °C	31.4 °C	23.9 °C	132 mm	22 days	15 days
2024	26.5 °C	30.9 °C	23.3 °C	249 mm	19 days	25 days
2023	27.3 °C	32.1 °C	23.4 °C	133 mm	24 days	18 days
2022	25.3 °C	29.0 °C	22.1 °C	268 mm	14 days	23 days
2021	25.0 °C	29.0 °C	21.7 °C	366 mm	12 days	23 days
2020	26.5 °C	30.4 °C	23.5 °C	255 mm	16 days	26 days
2019	26.1 °C	30.4 °C	22.5 °C	239 mm	18 days	16 days
2018	27.1 °C	31.6 °C	23.3 °C	121 mm	22 days	18 days
2017	26.6 °C	30.9 °C	23.3 °C	169 mm	17 days	23 days
2016	27.4 °C	32.2 °C	23.3 °C	177 mm	24 days	18 days
2015	28.0 °C	32.8 °C	24.0 °C	125 mm	24 days	21 days
2014	28.0 °C	33.1 °C	23.6 °C	130 mm	26 days	13 days
2013	26.2 °C	30.1 °C	23.0 °C	162 mm	11 days	24 days
2012	28.6 °C	33.6 °C	24.7 °C	161 mm	29 days	19 days
2011	25.4 °C	29.6 °C	22.1 °C	230 mm	13 days	23 days
2010	26.9 °C	30.8 °C	24.0 °C	319 mm	18 days	26 days
2009	26.5 °C	30.7 °C	23.3 °C	521 mm	19 days	25 days
2008	24.7 °C	28.2 °C	21.9 °C	366 mm	11 days	24 days
2007	26.6 °C	31.0 °C	22.8 °C	232 mm	15 days	19 days
2006	26.7 °C	30.7 °C	23.5 °C	267 mm	15 days	24 days
2005	25.4 °C	29.6 °C	22.1 °C	266 mm	15 days	20 days
2004	25.6 °C	29.3 °C	22.8 °C	184 mm	15 days	24 days
2003	26.5 °C	30.8 °C	23.4 °C	285 mm	17 days	26 days
2002	26.9 °C	31.0 °C	23.8 °C	242 mm	20 days	23 days
2001	26.2 °C	30.4 °C	22.9 °C	274 mm	17 days	21 days
2000	26.7 °C	31.4 °C	23.1 °C	180 mm	21 days	15 days
1999	25.7 °C	30.3 °C	22.1 °C	275 mm	17 days	21 days
1998	26.5 °C	30.7 °C	23.2 °C	246 mm	22 days	20 days
1997	27.5 °C	32.2 °C	23.9 °C	152 mm	22 days	20 days
1996	26.5 °C	31.1 °C	23.0 °C	270 mm	18 days	27 days
1995	25.6 °C	29.9 °C	22.4 °C	335 mm	18 days	23 days
1994	27.5 °C	32.2 °C	23.8 °C	296 mm	23 days	20 days
1993	26.9 °C	31.3 °C	23.5 °C	194 mm	20 days	22 days
1992	25.3 °C	29.7 °C	21.7 °C	215 mm	17 days	12 days
1991	27.8 °C	32.3 °C	24.3 °C	221 mm	24 days	22 days
1990	26.1 °C	30.2 °C	22.6 °C	165 mm	14 days	19 days
1989	25.5 °C	29.3 °C	22.3 °C	143 mm	13 days	13 days
1988	25.9 °C	29.5 °C	23.1 °C	304 mm	11 days	22 days
1987	26.6 °C	30.2 °C	23.8 °C	448 mm	17 days	25 days
1986	26.1 °C	29.4 °C	23.8 °C	369 mm	13 days	29 days
1985	24.8 °C	29.1 °C	21.5 °C	190 mm	11 days	15 days
1984	25.1 °C	28.4 °C	22.5 °C	258 mm	12 days	23 days
1983	26.0 °C	29.6 °C	23.4 °C	280 mm	12 days	26 days
1982	25.3 °C	28.7 °C	22.9 °C	298 mm	13 days	23 days
1981	25.6 °C	29.3 °C	22.6 °C	302 mm	14 days	25 days
1980	26.9 °C	31.2 °C	24.0 °C	290 mm	22 days	25 days
1979	25.9 °C	29.9 °C	22.7 °C	216 mm	15 days	20 days
1978	25.8 °C	29.9 °C	22.5 °C	187 mm	15 days	21 days
1977	24.9 °C	28.4 °C	21.8 °C	216 mm	9 days	22 days
1976	26.0 °C	30.0 °C	23.0 °C	315 mm	15 days	22 days
1975	26.6 °C	30.9 °C	23.2 °C	190 mm	23 days	22 days
1974	24.8 °C	28.5 °C	21.8 °C	381 mm	14 days	25 days
1973	26.1 °C	30.1 °C	23.1 °C	285 mm	16 days	23 days
1972	25.4 °C	29.0 °C	22.3 °C	281 mm	12 days	25 days
1971	25.5 °C	29.5 °C	22.2 °C	240 mm	16 days	18 days
1970	27.6 °C	32.1 °C	24.0 °C	79 mm	24 days	20 days
1969	24.4 °C	28.2 °C	20.9 °C	205 mm	8 days	17 days
1968	26.3 °C	30.6 °C	22.6 °C	160 mm	18 days	18 days
1967	23.7 °C	26.9 °C	21.0 °C	336 mm	4 days	27 days
1966	26.0 °C	30.2 °C	23.0 °C	313 mm	15 days	26 days
1965	26.5 °C	31.0 °C	23.1 °C	315 mm	21 days	24 days
1964	24.0 °C	28.1 °C	21.1 °C	308 mm	10 days	26 days
1963	24.5 °C	28.5 °C	21.5 °C	168 mm	12 days	23 days
1962	24.2 °C	27.7 °C	21.7 °C	589 mm	7 days	25 days
1961	25.3 °C	29.5 °C	22.3 °C	447 mm	15 days	24 days
1960	24.8 °C	28.6 °C	21.9 °C	381 mm	11 days	29 days
1959	25.0 °C	29.2 °C	21.7 °C	173 mm	13 days	20 days
1958	26.5 °C	31.2 °C	23.0 °C	105 mm	20 days	19 days
1957	25.9 °C	30.3 °C	22.7 °C	264 mm	17 days	28 days
1956	23.8 °C	28.0 °C	20.6 °C	210 mm	7 days	20 days
1955	26.6 °C	31.9 °C	23.0 °C	210 mm	23 days	27 days
1954	24.9 °C	29.0 °C	21.8 °C	304 mm	14 days	23 days
1953	24.0 °C	27.0 °C	21.5 °C	332 mm	2 days	28 days
1952	24.8 °C	29.0 °C	21.7 °C	192 mm	9 days	22 days
1951	23.9 °C	27.9 °C	21.1 °C	303 mm	8 days	26 days
1950	24.6 °C	28.7 °C	21.5 °C	257 mm	15 days	23 days
1949	23.8 °C	27.3 °C	21.2 °C	488 mm	5 days	27 days
1948	25.7 °C	30.6 °C	22.0 °C	189 mm	18 days	18 days
1947	24.0 °C	27.7 °C	21.2 °C	405 mm	10 days	27 days
1946	25.4 °C	29.7 °C	22.2 °C	224 mm	16 days	20 days
1945	24.4 °C	28.2 °C	21.6 °C	279 mm	9 days	21 days
1944	24.2 °C	27.9 °C	21.7 °C	390 mm	8 days	24 days
1943	23.9 °C	27.8 °C	20.8 °C	272 mm	7 days	23 days
1942	24.0 °C	27.8 °C	21.2 °C	310 mm	6 days	26 days
1941	25.2 °C	29.4 °C	22.2 °C	435 mm	14 days	28 days
1940	26.7 °C	31.0 °C	23.2 °C	535 mm	21 days	29 days

December records

Hottest day

39.2 °C

December 31, 2015 estimate

Coldest night

16.0 °C

December 25, 1963 estimate

Wettest day

124 mm

December 4, 2009 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 December?

Highs average 30.9 °C and lows 23.2 °C. A typical December brings 19 hot days (30 °C or more) and 0 frost days.

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

About 237 mm falls in December, over some 21 days with at least 1 mm. The wettest December was 1962 (589 mm), the driest 1970 (79 mm).

What was the warmest December in Rio de Janeiro?

2012, with a mean temperature of 28.6 °C. The coldest was 1967 (23.7 °C). The last one, 2025, ranks 9 of 86.