S
M
T
W
T
F
S
27
59°
50°
28
59°
48°
29
56°
49°
30
57°
49°
31
57°
48°
1
54°
48°
2
57°
51°
3
54°
48°
4
58°
47°
5
53°
46°
6
58°
48°
7
60°
49°
8
53°
45°
9
57°
46°
10
61°
48°
11
58°
44°
12
52°
46°
13
58°
42°
14
54°
49°
15
54°
49°
16
53°
49°
17
56°
50°
18
59°
50°
19
56°
52°
20
61°
51°
21
57°
51°
22
60°
50°
23
59°
53°
24
60°
54°
25
65°
55°
26
64°
58°
27
63°
53°
28
60°
52°
29
60°
52°
30
59°
51°
31
62°
51°
1
63°
48°
2
63°
48°
3
62°
49°
4
74°
48°
5
54°
42°
6
55°
40°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Reykjavik
Reykjavik's August 2025 forecast shows daily high temperatures ranging from ° to °, with overnight lows between ° and °. The average high for August is ° with an average low of °. 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.
