S
M
T
W
T
F
S
1
80°
70°
2
81°
69°
3
83°
72°
4
84°
72°
5
86°
73°
6
86°
74°
7
91°
76°
8
93°
74°
9
81°
74°
10
80°
73°
11
75°
70°
12
79°
70°
13
84°
72°
14
85°
72°
15
88°
70°
16
90°
73°
17
86°
72°
18
86°
75°
19
84°
72°
20
81°
72°
21
86°
73°
22
86°
73°
23
85°
71°
24
90°
71°
25
91°
74°
26
91°
75°
27
88°
74°
28
88°
74°
29
85°
72°
30
85°
74°
31
82°
73°
1
85°
72°
2
92°
73°
3
93°
72°
4
92°
72°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
March Weather in Rio de Janeiro
Rio de Janeiro's March 2026 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for March is ° with an average low of °. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how March weather will actually feel in Rio de Janeiro. See also: April | May | June.