S
M
T
W
T
F
S
30
110°
78°
31
112°
79°
1
111°
80°
2
111°
80°
3
108°
78°
4
104°
77°
5
103°
77°
6
103°
73°
7
101°
76°
8
103°
73°
9
103°
71°
10
104°
70°
11
102°
70°
12
102°
71°
13
103°
69°
14
101°
69°
15
101°
68°
16
102°
69°
17
101°
68°
18
100°
67°
19
101°
68°
20
99°
72°
21
100°
70°
22
100°
71°
23
103°
72°
24
Hist. Avg.
99°
75°
25
Hist. Avg.
98°
74°
26
Hist. Avg.
98°
74°
27
Hist. Avg.
98°
74°
28
Hist. Avg.
97°
73°
29
Hist. Avg.
97°
73°
30
Hist. Avg.
96°
72°
1
Hist. Avg.
96°
72°
2
Hist. Avg.
96°
71°
3
Hist. Avg.
95°
71°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Tacna
Tacna's September 2026 forecast shows daily high temperatures ranging from 99° to 112°, with overnight lows between 67° and 80°. The average high for September is 104° with an average low of 73°. 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.