S
M
T
W
T
F
S
26
79°
64°
27
79°
61°
28
82°
65°
29
77°
59°
30
68°
61°
1
75°
59°
2
73°
59°
3
75°
61°
4
79°
59°
5
77°
57°
6
75°
61°
7
71°
57°
8
76°
54°
9
77°
59°
10
80°
59°
11
80°
62°
12
76°
64°
13
79°
65°
14
77°
61°
15
85°
63°
16
85°
65°
17
85°
63°
18
86°
69°
19
83°
69°
20
83°
70°
21
84°
71°
22
86°
70°
23
86°
64°
24
90°
65°
25
88°
64°
26
88°
62°
27
86°
64°
28
83°
63°
29
77°
61°
30
84°
63°
31
86°
65°
1
85°
63°
2
85°
67°
3
87°
66°
4
85°
67°
5
78°
54°
6
80°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Kathmandu
Kathmandu's May 2026 forecast shows daily high temperatures ranging from 77° to 90°, with overnight lows between 54° and 67°. The average high for May is 85° with an average low of 63°. 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 Kathmandu. See also: June | July | August.