The climate of the state of Rio de Janeiro: when to go

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The climate of the state of Rio de Janeiro is hot and humid along the coast, while it is temperate and humid in the interior at higher altitudes. The flat areas of the state have a semi-humid tropical climate, with heavy rains in the summer months (December-March) and a dry winter.

In the internal areas of the state of Rio de Janeiro and in the highest areas there is a tropical climate of high altitude, with rainy summers and dry winters, temperatures drop slightly with increasing height, the average annual rainfall is about 1,500-2,400 mm.

In the area of the city of Rio de Janeiro the climate is of a tropical maritime type with rains during the summer months, between December and April, on average the city has over 1,100 mm of rain per year.

Along the northern coast of the state, rainfall tends to decrease, in the Cabo Frio area there are less than 800 mm of rain per year relatively well distributed, but with maximums between October and January.

The southern coast of the state is much more rainy, in this area it exceeds 2,000 mm of rainfall a year, the rainiest months are between October and April.

Temperatures vary with varying heights, and touch very low values in the area of the Itatiaia National Park (Parque Nacional de Itatiaia), where the Pico das Agulhas Negras (2,791 meters) is located, the highest mountain in the state of Rio de Janeiro, where it can rarely snow in winter. In this area the rains are concentrated between November and March, while between March and August they are very rare, the average annual rainfall in the town of Itatiaia is around 1,500 mm.

WHEN TO GO IN THE STATE OF RIO DE JANEIRO

The best time to travel to the state of Rio de Janeiro are the coolest and least rainy months from May to October / November.

Climate of the city of Rio de Janeiro.

THE CLIMATE OF THE STATE OF RIO DE JANEIRO: CLIMATE TABLES

CLIMATE TABLES: RIO DE JANEIRO

RIO DE JANEIRO (5 meters)
Month	Average low (°C)	Average high (°C)	Precip. (mm)	Precip. days
January	23,3	30,2	137,1	11
February	23,5	30,2	130,4	7
March	23,3	29,4	135,8	8
April	21,9	27,8	94,9	9
May	20,4	26,4	69,8	6
June	18,7	25,2	42,7	6
July	18,4	25,0	41,9	4
August	18,9	25,5	44,5	5
September	19,2	25,4	53,6	7
October	20,2	26,0	89,5	9
November	21,4	27,4	97,8	10
December	22,4	28,6	134,2	11
YEAR	21,0	27,3	1069,4	93

CLIMATE TABLES: PETRÓPOLIS

PETRÓPOLIS (838 meters)
Month	Average low (°C)	Average high (°C)	Precip. (mm)	Precip. days
January	17,5	26,8	321
February	17,5	27,5	309
March	17,1	27,1	288
April	15,7	25,7	168
May	13,1	22,7	111
June	11,9	22,3	78
July	11,3	21,5	63
August	12,1	23,2	79
September	13,3	23,3	51
October	15,0	25,1	178
November	15,9	25,1	257
December	17,0	26,1	360
YEAR	14,8	24,7	2263

CLIMATE TABLES: CABO FRIO

CABO FRIO (4 meters)
Month	Average low (°C)	Average high (°C)	Precip. (mm)	Precip. days
January	22	29	78
February	23	29	44
March	23	29	53
April	21	27	78
May	20	26	69
June	19	25	44
July	19	25	45
August	19	24	36
September	19	24	61
October	20	25	81
November	21	26	81
December	22	28	101
YEAR	771

CLIMATE TABLES: PARATY

PARATY (5 meters)
Month	Average low (°C)	Average high (°C)	Precip. (mm)	Precip. days
January	22	29	280
February	23	29	272
March	23	29	271
April	21	27	220
May	20	26	142
June	19	25	85
July	19	25	95
August	19	24	106
September	19	24	124
October	20	25	227
November	21	26	244
December	22	28	304
YEAR	2370

CLIMATE TABLES: ITATIAIA

ITATIAIA (505 meters)
Month	Average low (°C)	Average high (°C)	Precip. (mm)	Precip. days
January	18	27	268
February	18	27	250
March	18	27	207
April	15	25	82
May	12	24	37
June	10	23	25
July	10	22	16
August	11	23	10
September	13	24	54
October	15	25	118
November	16	26	230
December	17	26	242
YEAR	1539