S
M
T
W
T
F
S
30
77°
55°
31
77°
57°
1
76°
55°
2
80°
55°
3
80°
56°
4
81°
55°
5
84°
59°
6
82°
59°
7
82°
54°
8
68°
57°
9
71°
54°
10
75°
59°
11
78°
60°
12
74°
47°
13
79°
61°
14
81°
61°
15
68°
60°
16
71°
59°
17
76°
56°
18
69°
58°
19
79°
59°
20
81°
54°
21
76°
61°
22
N/A
23
N/A
24
N/A
25
85°
55°
26
86°
54°
27
N/A
28
81°
56°
29
84°
57°
30
85°
52°
1
86°
52°
2
86°
54°
3
85°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Nairobi
Nairobi's September 2026 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 Nairobi. See also: October | November | December.