S
M
T
W
T
F
S
26
78°
48°
27
79°
50°
28
78°
52°
29
72°
54°
30
72°
52°
31
73°
52°
1
72°
51°
2
72°
51°
3
73°
50°
4
74°
48°
5
75°
48°
6
74°
49°
7
74°
51°
8
75°
47°
9
74°
51°
10
75°
50°
11
72°
53°
12
70°
51°
13
72°
50°
14
76°
52°
15
76°
54°
16
71°
47°
17
70°
49°
18
69°
46°
19
Hist. Avg.
68°
52°
20
Hist. Avg.
68°
52°
21
Hist. Avg.
68°
51°
22
Hist. Avg.
67°
51°
23
Hist. Avg.
67°
51°
24
Hist. Avg.
67°
51°
25
Hist. Avg.
66°
50°
26
Hist. Avg.
66°
50°
27
Hist. Avg.
66°
50°
28
Hist. Avg.
65°
50°
29
Hist. Avg.
65°
49°
30
Hist. Avg.
65°
49°
31
Hist. Avg.
64°
49°
1
Hist. Avg.
64°
49°
2
Hist. Avg.
64°
49°
3
Hist. Avg.
63°
48°
4
Hist. Avg.
63°
48°
5
Hist. Avg.
63°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Oslo
Oslo's August 2026 forecast shows daily high temperatures ranging from 69° to 79°, with overnight lows between 46° and 54°. The average high for August is 74° with an average low of 50°. 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 Oslo. See also: September | October | November.