S
M
T
W
T
F
S
26
83°
60°
27
83°
63°
28
85°
63°
29
85°
64°
30
84°
64°
31
86°
63°
1
86°
62°
2
85°
63°
3
84°
62°
4
83°
61°
5
85°
64°
6
86°
62°
7
80°
58°
8
81°
61°
9
83°
62°
10
82°
62°
11
85°
61°
12
84°
63°
13
85°
62°
14
83°
61°
15
83°
60°
16
82°
61°
17
82°
61°
18
83°
60°
19
83°
60°
20
84°
59°
21
82°
55°
22
77°
50°
23
76°
48°
24
75°
50°
25
76°
49°
26
77°
54°
27
78°
57°
28
78°
57°
29
77°
56°
30
73°
57°
31
75°
57°
1
80°
52°
2
79°
47°
3
70°
54°
4
73°
56°
5
70°
48°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Flensburg
Flensburg's August 2026 forecast shows daily high temperatures ranging from 70° to 86°, with overnight lows between 47° and 64°. The average high for August is 81° with an average low of 58°. 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 Flensburg. See also: September | October | November.