S
M
T
W
T
F
S
31
72°
56°
1
73°
55°
2
73°
52°
3
67°
49°
4
67°
51°
5
68°
50°
6
67°
50°
7
68°
53°
8
68°
53°
9
69°
52°
10
68°
49°
11
68°
52°
12
69°
52°
13
68°
51°
14
70°
53°
15
69°
51°
16
69°
51°
17
70°
55°
18
69°
55°
19
70°
56°
20
70°
52°
21
71°
58°
22
72°
57°
23
74°
53°
24
71°
52°
25
73°
57°
26
72°
54°
27
70°
51°
28
70°
57°
29
73°
60°
30
77°
60°
1
76°
56°
2
72°
54°
3
72°
60°
4
77°
61°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
June Weather in San Sebastian
San Sebastian's June 2026 forecast shows daily high temperatures ranging from 67° to 77°, with overnight lows between 49° and 61°. The average high for June is 71° with an average low of 54°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how June weather will actually feel in San Sebastian. See also: July | August | September.
