S
M
T
W
T
F
S
26
65°
57°
27
67°
57°
28
64°
55°
29
65°
55°
30
64°
57°
31
65°
57°
1
66°
56°
2
65°
57°
3
65°
57°
4
66°
56°
5
65°
58°
6
68°
57°
7
66°
57°
8
67°
58°
9
67°
58°
10
68°
57°
11
67°
58°
12
69°
57°
13
68°
57°
14
68°
57°
15
69°
57°
16
69°
55°
17
68°
55°
18
68°
54°
19
67°
55°
20
68°
57°
21
68°
55°
22
67°
56°
23
68°
56°
24
68°
55°
25
67°
53°
26
64°
50°
27
63°
52°
28
63°
54°
29
64°
52°
30
63°
51°
31
63°
52°
1
64°
52°
2
63°
53°
3
62°
53°
4
62°
50°
5
63°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Cairnryan
Cairnryan's August 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 49° and 58°. The average high for August is 66° with an average low of 55°. 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 Cairnryan. See also: September | October | November.