S
M
T
W
T
F
S
26
109°
83°
27
108°
82°
28
108°
82°
29
109°
80°
30
109°
78°
31
108°
78°
1
108°
79°
2
110°
82°
3
111°
84°
4
113°
83°
5
111°
82°
6
112°
83°
7
113°
82°
8
112°
81°
9
112°
79°
10
111°
78°
11
111°
79°
12
110°
80°
13
112°
79°
14
111°
77°
15
108°
77°
16
108°
76°
17
106°
75°
18
106°
75°
19
105°
76°
20
105°
75°
21
106°
75°
22
105°
76°
23
106°
75°
24
106°
76°
25
107°
79°
26
110°
76°
27
107°
75°
28
110°
78°
29
110°
79°
30
109°
79°
31
106°
78°
1
105°
78°
2
106°
77°
3
108°
76°
4
108°
75°
5
107°
78°
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 105° to 113°, with overnight lows between 75° and 84°. The average high for August is 109° with an average low of 78°. 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.