S
M
T
W
T
F
S
31
83°
68°
1
86°
68°
2
85°
68°
3
87°
69°
4
84°
70°
5
87°
68°
6
81°
69°
7
82°
68°
8
86°
68°
9
82°
69°
10
82°
70°
11
78°
69°
12
85°
69°
13
83°
69°
14
78°
68°
15
82°
67°
16
77°
68°
17
77°
68°
18
81°
68°
19
79°
68°
20
82°
66°
21
81°
70°
22
84°
72°
23
86°
72°
24
84°
68°
25
84°
68°
26
86°
70°
27
84°
66°
28
82°
70°
29
82°
68°
30
82°
70°
1
82°
64°
2
72°
66°
3
73°
66°
4
68°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Kathmandu
Kathmandu's September 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for September is ° with an average low of °. 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.
