S
M
T
W
T
F
S
26
80°
57°
27
80°
60°
28
83°
60°
29
83°
59°
30
76°
56°
31
75°
52°
1
78°
52°
2
75°
57°
3
80°
60°
4
81°
54°
5
80°
51°
6
75°
52°
7
74°
51°
8
74°
51°
9
75°
52°
10
74°
52°
11
75°
53°
12
77°
56°
13
78°
54°
14
76°
59°
15
81°
55°
16
74°
58°
17
73°
53°
18
76°
55°
19
79°
55°
20
73°
52°
21
72°
57°
22
78°
56°
23
73°
53°
24
73°
50°
25
71°
50°
26
Hist. Avg.
76°
56°
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 83°, with overnight lows between 50° and 60°. The average high for August is 77° 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.