S
M
T
W
T
F
S
26
65°
62°
27
74°
60°
28
73°
56°
29
77°
54°
30
76°
54°
31
82°
58°
1
74°
55°
2
71°
54°
3
77°
57°
4
82°
57°
5
80°
59°
6
80°
58°
7
81°
58°
8
76°
59°
9
77°
58°
10
78°
59°
11
75°
60°
12
78°
61°
13
78°
60°
14
73°
59°
15
72°
58°
16
74°
60°
17
74°
60°
18
72°
59°
19
75°
59°
20
74°
60°
21
73°
59°
22
69°
55°
23
74°
58°
24
72°
58°
25
74°
59°
26
69°
59°
27
71°
58°
28
73°
59°
29
76°
59°
30
76°
58°
31
75°
58°
1
76°
57°
2
75°
58°
3
71°
57°
4
71°
57°
5
67°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Port Coquitlam
Port Coquitlam's August 2026 forecast shows daily high temperatures ranging from 67° to 82°, with overnight lows between 54° and 61°. The average high for August is 75° with an average low of 58°. 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 Port Coquitlam. See also: September | October | November.