S
M
T
W
T
F
S
30
107°
88°
31
104°
88°
1
105°
85°
2
105°
82°
3
104°
81°
4
105°
82°
5
99°
85°
6
105°
85°
7
107°
80°
8
109°
86°
9
106°
86°
10
107°
87°
11
105°
83°
12
102°
81°
13
104°
75°
14
104°
73°
15
102°
74°
16
101°
74°
17
103°
73°
18
104°
76°
19
105°
75°
20
105°
74°
21
102°
70°
22
98°
66°
23
97°
67°
24
96°
65°
25
96°
65°
26
100°
69°
27
97°
66°
28
94°
67°
29
100°
68°
30
94°
61°
1
93°
62°
2
95°
65°
3
97°
64°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
September Weather in Tacna
Tacna's September 2026 forecast shows daily high temperatures ranging from 93° to 109°, with overnight lows between 61° and 87°. The average high for September is 101° with an average low of 72°. 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 Tacna. See also: October | November | December.