S
M
T
W
T
F
S
26
82°
60°
27
83°
59°
28
84°
52°
29
75°
55°
30
75°
52°
31
76°
52°
1
75°
53°
2
75°
60°
3
82°
59°
4
81°
59°
5
82°
60°
6
82°
59°
7
77°
58°
8
82°
59°
9
79°
60°
10
81°
59°
11
82°
57°
12
80°
56°
13
78°
53°
14
78°
53°
15
80°
57°
16
81°
56°
17
81°
55°
18
80°
54°
19
79°
56°
20
75°
50°
21
72°
48°
22
73°
50°
23
73°
50°
24
72°
49°
25
72°
47°
26
71°
47°
27
Hist. Avg.
75°
55°
28
Hist. Avg.
75°
55°
29
Hist. Avg.
75°
55°
30
Hist. Avg.
75°
55°
31
Hist. Avg.
74°
55°
1
Hist. Avg.
74°
55°
2
Hist. Avg.
74°
54°
3
Hist. Avg.
73°
54°
4
Hist. Avg.
73°
54°
5
Hist. Avg.
73°
54°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Basel
Basel's August 2026 forecast shows daily high temperatures ranging from 71° to 84°, with overnight lows between 47° and 60°. The average high for August is 78° with an average low of 55°. 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 Basel. See also: September | October | November.