S
M
T
W
T
F
S
26
71°
48°
27
70°
49°
28
60°
43°
29
61°
42°
30
66°
44°
1
68°
47°
2
66°
45°
3
60°
44°
4
61°
47°
5
62°
46°
6
62°
43°
7
63°
44°
8
63°
44°
9
64°
45°
10
65°
45°
11
62°
46°
12
64°
46°
13
65°
47°
14
64°
46°
15
65°
47°
16
64°
46°
17
65°
46°
18
66°
48°
19
67°
47°
20
66°
46°
21
66°
46°
22
67°
47°
23
68°
49°
24
68°
48°
25
69°
49°
26
69°
50°
27
70°
50°
28
70°
49°
29
73°
50°
30
73°
54°
31
74°
55°
1
76°
54°
2
74°
54°
3
76°
52°
4
75°
52°
5
75°
53°
6
76°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Bilbao
Bilbao's May 2026 forecast shows daily high temperatures ranging from 60° to 76°, with overnight lows between 42° and 57°. The average high for May is 67° with an average low of 48°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how May weather will actually feel in Bilbao. See also: June | July | August.
