S
M
T
W
T
F
S
26
86°
76°
27
86°
76°
28
87°
77°
29
88°
77°
30
88°
76°
1
87°
77°
2
88°
76°
3
86°
76°
4
87°
77°
5
88°
78°
6
89°
77°
7
91°
78°
8
92°
79°
9
91°
76°
10
89°
73°
11
87°
75°
12
89°
73°
13
90°
74°
14
91°
78°
15
89°
79°
16
89°
78°
17
87°
78°
18
89°
79°
19
92°
79°
20
93°
80°
21
92°
79°
22
91°
77°
23
90°
77°
24
90°
78°
25
91°
79°
26
92°
78°
27
91°
77°
28
92°
79°
29
92°
77°
30
93°
77°
31
92°
78°
1
92°
77°
2
93°
77°
3
92°
78°
4
92°
78°
5
93°
79°
6
92°
78°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Hanoi
Hanoi's May 2026 forecast shows daily high temperatures ranging from 86° to 93°, with overnight lows between 73° and 80°. The average high for May is 90° with an average low of 77°. 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 Hanoi. See also: June | July | August.