S
M
T
W
T
F
S
27
66°
48°
28
N/A
29
70°
52°
30
66°
59°
1
64°
48°
2
66°
61°
3
64°
41°
4
63°
37°
5
63°
59°
6
63°
59°
7
59°
50°
8
N/A
9
62°
51°
10
59°
50°
11
60°
57°
12
64°
59°
13
63°
56°
14
62°
54°
15
59°
52°
16
58°
50°
17
59°
51°
18
58°
54°
19
59°
53°
20
58°
52°
21
58°
52°
22
57°
51°
23
57°
51°
24
55°
50°
25
58°
51°
26
55°
51°
27
58°
50°
28
56°
50°
29
52°
49°
30
52°
50°
31
56°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
October Weather in Castlemartin
Castlemartin's October 2026 forecast shows daily high temperatures ranging from 52° to 64°, with overnight lows between 49° and 59°. The average high for October is 58° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how October weather will actually feel in Castlemartin. See also: November | December | January.