S
M
T
W
T
F
S
26
81°
56°
27
80°
58°
28
74°
54°
29
75°
59°
30
79°
59°
31
76°
58°
1
82°
60°
2
77°
60°
3
82°
59°
4
75°
56°
5
76°
59°
6
76°
59°
7
75°
57°
8
74°
58°
9
73°
56°
10
75°
57°
11
78°
59°
12
81°
59°
13
80°
58°
14
73°
55°
15
75°
57°
16
79°
58°
17
81°
58°
18
81°
57°
19
80°
58°
20
80°
54°
21
71°
49°
22
73°
55°
23
80°
58°
24
77°
56°
25
81°
50°
26
79°
46°
27
71°
44°
28
70°
45°
29
71°
51°
30
78°
53°
31
79°
46°
1
78°
43°
2
69°
42°
3
65°
43°
4
65°
43°
5
66°
41°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Coleraine
Coleraine's August 2026 forecast shows daily high temperatures ranging from 65° to 82°, with overnight lows between 41° and 60°. The average high for August is 76° with an average low of 54°. 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 Coleraine. See also: September | October | November.
