S
M
T
W
T
F
S
26
104°
77°
27
105°
77°
28
105°
81°
29
110°
83°
30
104°
79°
31
104°
80°
1
107°
82°
2
109°
83°
3
108°
82°
4
105°
82°
5
106°
79°
6
104°
81°
7
108°
80°
8
106°
82°
9
110°
81°
10
112°
80°
11
110°
81°
12
111°
80°
13
111°
77°
14
109°
77°
15
108°
78°
16
109°
80°
17
111°
82°
18
112°
82°
19
113°
81°
20
113°
82°
21
112°
79°
22
112°
80°
23
110°
80°
24
106°
78°
25
106°
77°
26
108°
77°
27
110°
78°
28
111°
76°
29
111°
77°
30
110°
78°
31
112°
79°
1
111°
80°
2
111°
80°
3
108°
78°
4
104°
77°
5
103°
77°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Tacna
Tacna's August 2026 forecast shows daily high temperatures ranging from 103° to 113°, with overnight lows between 76° and 83°. The average high for August is 109° with an average low of 80°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Tacna. See also: September | October | November.