S
M
T
W
T
F
S
26
63°
57°
27
66°
54°
28
68°
60°
29
64°
53°
30
62°
52°
31
62°
47°
1
65°
53°
2
64°
48°
3
66°
56°
4
68°
57°
5
60°
54°
6
62°
54°
7
64°
55°
8
64°
55°
9
61°
53°
10
63°
52°
11
72°
49°
12
72°
59°
13
73°
60°
14
66°
59°
15
62°
55°
16
63°
54°
17
62°
55°
18
62°
56°
19
61°
54°
20
60°
52°
21
61°
48°
22
61°
48°
23
63°
50°
24
69°
46°
25
N/A
26
67°
57°
27
69°
58°
28
63°
57°
29
63°
55°
30
63°
53°
31
62°
53°
1
62°
51°
2
63°
53°
3
64°
52°
4
63°
53°
5
62°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Portrush
Portrush's August 2026 forecast shows daily high temperatures ranging from 62° to 69°, with overnight lows between 51° and 58°. 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.
