S
M
T
W
T
F
S
26
70°
61°
27
73°
63°
28
75°
64°
29
75°
64°
30
76°
65°
31
76°
65°
1
75°
64°
2
75°
64°
3
71°
57°
4
71°
58°
5
72°
58°
6
73°
62°
7
74°
61°
8
71°
62°
9
72°
60°
10
74°
61°
11
72°
64°
12
77°
64°
13
76°
58°
14
73°
63°
15
75°
63°
16
76°
64°
17
75°
62°
18
71°
58°
19
74°
62°
20
75°
66°
21
77°
64°
22
78°
59°
23
71°
57°
24
71°
59°
25
73°
60°
26
76°
58°
27
71°
59°
28
71°
64°
29
76°
64°
30
76°
60°
31
75°
61°
1
71°
60°
2
72°
58°
3
71°
59°
4
73°
61°
5
76°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Santander
Santander's August 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 57° and 66°. The average high for August is 74° with an average low of 61°. 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 Santander. See also: September | October | November.