S
M
T
W
T
F
S
26
82°
76°
27
88°
76°
28
91°
79°
29
90°
76°
30
93°
74°
1
93°
78°
2
91°
78°
3
91°
78°
4
90°
79°
5
94°
74°
6
89°
74°
7
93°
78°
8
89°
78°
9
90°
78°
10
91°
78°
11
90°
74°
12
80°
73°
13
86°
73°
14
87°
77°
15
89°
77°
16
90°
79°
17
91°
78°
18
92°
76°
19
89°
76°
20
88°
75°
21
86°
75°
22
88°
75°
23
86°
75°
24
87°
74°
25
87°
74°
26
86°
73°
27
87°
75°
28
84°
74°
29
86°
74°
30
87°
75°
31
84°
73°
1
83°
72°
2
83°
72°
3
84°
73°
4
83°
72°
5
83°
72°
6
84°
73°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Boa Vista
Boa Vista's May 2026 forecast shows daily high temperatures ranging from 83° to 92°, with overnight lows between 72° and 76°. The average high for May is 86° with an average low of 74°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Boa Vista. See also: June | July | August.