S
M
T
W
T
F
S
26
86°
72°
27
86°
74°
28
87°
76°
29
82°
72°
30
83°
71°
1
86°
71°
2
91°
73°
3
83°
72°
4
77°
70°
5
86°
69°
6
89°
74°
7
88°
76°
8
80°
75°
9
83°
75°
10
85°
74°
11
85°
73°
12
90°
76°
13
95°
79°
14
100°
80°
15
99°
82°
16
95°
81°
17
86°
79°
18
87°
79°
19
88°
78°
20
89°
80°
21
91°
80°
22
99°
81°
23
106°
83°
24
106°
84°
25
109°
86°
26
109°
87°
27
N/A
28
97°
82°
29
94°
79°
30
94°
82°
31
98°
81°
1
98°
80°
2
96°
79°
3
100°
81°
4
96°
82°
5
97°
82°
6
93°
79°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Hanoi
Hanoi's May 2026 forecast shows daily high temperatures ranging from 93° to 100°, with overnight lows between 79° and 82°. The average high for May is 96° with an average low of 81°. 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.