S
M
T
W
T
F
S
26
65°
46°
27
67°
49°
28
57°
49°
29
55°
45°
30
63°
45°
31
64°
51°
1
N/A
2
59°
49°
3
55°
48°
4
56°
47°
5
57°
51°
6
60°
47°
7
57°
50°
8
60°
50°
9
57°
51°
10
60°
51°
11
58°
51°
12
59°
52°
13
61°
51°
14
58°
50°
15
59°
48°
16
56°
47°
17
55°
44°
18
57°
45°
19
55°
47°
20
56°
48°
21
56°
49°
22
57°
48°
23
54°
47°
24
54°
48°
25
57°
48°
26
58°
47°
27
56°
48°
28
55°
48°
29
56°
44°
30
55°
45°
31
54°
43°
1
55°
42°
2
54°
43°
3
54°
47°
4
55°
46°
5
52°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Reykjavik
Reykjavik's August 2026 forecast shows daily high temperatures ranging from 52° to 61°, with overnight lows between 42° and 52°. The average high for August is 56° with an average low of 48°. 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 Reykjavik. See also: September | October | November.
