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Rio de Janeiro Climate Guide
Brazil
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Maximum Daytime Temperature (°C)
Minimum Night-time Temperature (°C)
30
30 °C (86°F) Maximum Daytime Temperature in January
30
30 °C (86°F) Maximum Daytime Temperature in February
29
29 °C (84°F) Maximum Daytime Temperature in March
27
27 °C (81°F) Maximum Daytime Temperature in April
26
26 °C (79°F) Maximum Daytime Temperature in May
25
25 °C (77°F) Maximum Daytime Temperature in June
24
24 °C (75°F) Maximum Daytime Temperature in July
25
25 °C (77°F) Maximum Daytime Temperature in August
25
25 °C (77°F) Maximum Daytime Temperature in September
26
26 °C (79°F) Maximum Daytime Temperature in October
27
27 °C (81°F) Maximum Daytime Temperature in November
28
28 °C (82°F) Maximum Daytime Temperature in December
J F M A M J J A S O N D
21
21 °C (70°F) Minimum Night-time Temperature in January
22
22 °C (72°F) Minimum Night-time Temperature in February
21
21 °C (70°F) Minimum Night-time Temperature in March
19
19 °C (66°F) Minimum Night-time Temperature in April
18
18 °C (64°F) Minimum Night-time Temperature in May
16
16 °C (61°F) Minimum Night-time Temperature in June
16
16 °C (61°F) Minimum Night-time Temperature in July
16
16 °C (61°F) Minimum Night-time Temperature in August
17
17 °C (63°F) Minimum Night-time Temperature in September
18
18 °C (64°F) Minimum Night-time Temperature in October
19
19 °C (66°F) Minimum Night-time Temperature in November
20
20 °C (68°F) Minimum Night-time Temperature in December
J F M A M J J A S O N D
Hours of Sunshine
Hours of Daylight
6
6 Hours of Sunshine (48% of Daylight Hours) in January
7
7 Hours of Sunshine (52% of Daylight Hours) in February
6
6 Hours of Sunshine (52% of Daylight Hours) in March
6
6 Hours of Sunshine (50% of Daylight Hours) in April
6
6 Hours of Sunshine (53% of Daylight Hours) in May
6
6 Hours of Sunshine (55% of Daylight Hours) in June
6
6 Hours of Sunshine (56% of Daylight Hours) in July
6
6 Hours of Sunshine (54% of Daylight Hours) in August
5
5 Hours of Sunshine (40% of Daylight Hours) in September
5
5 Hours of Sunshine (39% of Daylight Hours) in October
5
5 Hours of Sunshine (41% of Daylight Hours) in November
5
5 Hours of Sunshine (39% of Daylight Hours) in December
J F M A M J J A S O N D
13
13 Hours of Daylight in January
13
13 Hours of Daylight in February
12
12 Hours of Daylight in March
12
12 Hours of Daylight in April
11
11 Hours of Daylight in May
11
11 Hours of Daylight in June
11
11 Hours of Daylight in July
11
11 Hours of Daylight in August
12
12 Hours of Daylight in September
13
13 Hours of Daylight in October
13
13 Hours of Daylight in November
14
14 Hours of Daylight in December
J F M A M J J A S O N D
Days with some Rain
Monthly Rainfall (mm)
21
21 Days with some Rain in January
17
17 Days with some Rain in February
16
16 Days with some Rain in March
14
14 Days with some Rain in April
12
12 Days with some Rain in May
9
9 Days with some Rain in June
10
10 Days with some Rain in July
9
9 Days with some Rain in August
12
12 Days with some Rain in September
18
18 Days with some Rain in October
21
21 Days with some Rain in November
22
22 Days with some Rain in December
J F M A M J J A S O N D
203
203 mm (8.0 inches) Monthly Rainfall in January
186
186 mm (7.3 inches) Monthly Rainfall in February
183
183 mm (7.2 inches) Monthly Rainfall in March
146
146 mm (5.7 inches) Monthly Rainfall in April
107
107 mm (4.2 inches) Monthly Rainfall in May
71
71 mm (2.8 inches) Monthly Rainfall in June
66
66 mm (2.6 inches) Monthly Rainfall in July
76
76 mm (3.0 inches) Monthly Rainfall in August
96
96 mm (3.8 inches) Monthly Rainfall in September
129
129 mm (5.1 inches) Monthly Rainfall in October
159
159 mm (6.3 inches) Monthly Rainfall in November
207
207 mm (8.1 inches) Monthly Rainfall in December
J F M A M J J A S O N D
Heat & Humidity / Chance of Frost
UV Index (Maximum)
H
High Heat & Humidity in January
H
High Heat & Humidity in February
H
High Heat & Humidity in March
M
Moderate Heat & Humidity in April
L
Low Heat & Humidity in May
L
Low Heat & Humidity in June
-
No Heat & Humidity or Frost in July
L
Low Heat & Humidity in August
L
Low Heat & Humidity in September
L
Low Heat & Humidity in October
M
Moderate Heat & Humidity in November
M
Moderate Heat & Humidity in December
J F M A M J J A S O N D
11
UV 11+ (Extreme) in January
11
UV 11+ (Extreme) in February
11
UV 11+ (Extreme) in March
9
UV 9 (Very High) in April
7
UV 7 (High) in May
5
UV 5 (Moderate) in June
5
UV 5 (Moderate) in July
7
UV 7 (High) in August
10
UV 10 (Very High) in September
11
UV 11 (Extreme) in October
11
UV 11+ (Extreme) in November
11
UV 11+ (Extreme) in December
J F M A M J J A S O N D
Sea Temperature (°C)
25
25 °C (77°F) Sea Temperature in January
26
26 °C (79°F) Sea Temperature in February
26
26 °C (79°F) Sea Temperature in March
25
25 °C (77°F) Sea Temperature in April
24
24 °C (75°F) Sea Temperature in May
23
23 °C (73°F) Sea Temperature in June
22
22 °C (72°F) Sea Temperature in July
22
22 °C (72°F) Sea Temperature in August
22
22 °C (72°F) Sea Temperature in September
22
22 °C (72°F) Sea Temperature in October
24
24 °C (75°F) Sea Temperature in November
25
25 °C (77°F) Sea Temperature in December
J F M A M J J A S O N D
Rio de Janeiro Climate Guide (Historical Weather Averages), Brazil
Elev: 0 m   Long: 043°12'W   Lat: 22°54'S
Hoseasons
Alta Floresta · Aracaju · Aracatuba · Barcelos · Bauru · Belem · Belo Horizonte · Boa Vista · Brasilia · Caldas Novas · Campina Grande · Campinas · Campo Grande · Caxias do Sul · Chapeco · Corumba · Cruzeiro do Sul · Cuiaba · Curitiba · Eirunepe · Fernando de Noronha · Florianopolis · Fortaleza · Foz do Iguacu · Goiania · Ilheus · Ji-Parana · Joao Pessoa · Joinville · Juazeiro · Juiz de Fora · Labrea · Lencois · Livramento · Londrina · Macapa · Maceio · Manaus · Maraba · Maringa · Mucuri · Natal · Navegantes · Palmas · Porto Alegre · Porto Seguro · Porto Velho · Presidente Prudente · Recife · Ribeirao Preto · Rio Branco · Rio Grande · Salvador · Santa Maria · Santarem · Sao Gabriel · Sao Jose do Rio Preto · Sao Luis · Sao Paulo · Tabatinga · Teresina · Tonantins · Uberaba · Uberlandia · Una · Vitoria · Vitoria da Conquista 
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