S
M
T
W
T
F
S
30
76°
60°
31
75°
61°
1
71°
60°
2
72°
58°
3
71°
59°
4
73°
61°
5
76°
62°
6
75°
61°
7
72°
58°
8
74°
59°
9
75°
61°
10
74°
62°
11
76°
61°
12
71°
58°
13
70°
60°
14
72°
58°
15
70°
59°
16
70°
56°
17
71°
58°
18
71°
54°
19
70°
59°
20
Hist. Avg.
72°
57°
21
Hist. Avg.
72°
57°
22
Hist. Avg.
72°
57°
23
Hist. Avg.
72°
57°
24
Hist. Avg.
72°
57°
25
Hist. Avg.
72°
57°
26
Hist. Avg.
72°
56°
27
Hist. Avg.
72°
56°
28
Hist. Avg.
72°
56°
29
Hist. Avg.
71°
56°
30
Hist. Avg.
71°
56°
1
Hist. Avg.
71°
56°
2
Hist. Avg.
71°
56°
3
Hist. Avg.
71°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Santander
Santander's September 2026 forecast shows daily high temperatures ranging from 70° to 76°, with overnight lows between 54° and 62°. The average high for September is 73° with an average low of 59°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Santander. See also: October | November | December.
