S
M
T
W
T
F
S
30
84°
59°
31
83°
60°
1
83°
59°
2
82°
58°
3
82°
58°
4
83°
58°
5
84°
59°
6
83°
58°
7
83°
57°
8
84°
58°
9
82°
57°
10
83°
57°
11
83°
58°
12
82°
56°
13
82°
57°
14
83°
58°
15
82°
56°
16
82°
56°
17
83°
57°
18
83°
56°
19
84°
56°
20
83°
57°
21
88°
57°
22
87°
56°
23
85°
56°
24
85°
57°
25
86°
56°
26
87°
55°
27
88°
57°
28
88°
58°
29
87°
57°
30
88°
55°
1
88°
54°
2
87°
56°
3
84°
55°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kathmandu
Kathmandu's September 2026 forecast shows daily high temperatures ranging from 82° to 88°, with overnight lows between 54° and 60°. The average high for September is 84° with an average low of 57°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Kathmandu. See also: October | November | December.
