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