S
M
T
W
T
F
S
26
75°
56°
27
76°
56°
28
75°
58°
29
75°
60°
30
77°
63°
31
79°
63°
1
80°
62°
2
81°
62°
3
80°
59°
4
75°
57°
5
75°
57°
6
77°
58°
7
76°
59°
8
75°
58°
9
76°
61°
10
75°
61°
11
77°
60°
12
79°
61°
13
77°
61°
14
77°
60°
15
78°
60°
16
77°
59°
17
75°
59°
18
76°
60°
19
77°
59°
20
76°
58°
21
75°
57°
22
76°
60°
23
76°
59°
24
75°
60°
25
76°
62°
26
76°
60°
27
79°
59°
28
80°
57°
29
Hist. Avg.
76°
57°
30
Hist. Avg.
76°
57°
31
Hist. Avg.
76°
57°
1
Hist. Avg.
76°
57°
2
Hist. Avg.
76°
57°
3
Hist. Avg.
76°
57°
4
Hist. Avg.
76°
57°
5
Hist. Avg.
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Porto
Porto's August 2026 forecast shows daily high temperatures ranging from 75° to 81°, with overnight lows between 56° and 63°. The average high for August is 77° with an average low of 59°. 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 Porto. See also: September | October | November.
