S
M
T
W
T
F
S
26
66°
49°
27
65°
48°
28
61°
46°
29
61°
46°
30
62°
47°
1
61°
46°
2
62°
52°
3
61°
51°
4
64°
50°
5
62°
47°
6
61°
48°
7
68°
49°
8
62°
47°
9
63°
48°
10
62°
48°
11
62°
49°
12
63°
48°
13
63°
48°
14
64°
49°
15
66°
50°
16
67°
53°
17
65°
52°
18
66°
52°
19
66°
50°
20
67°
51°
21
66°
48°
22
66°
49°
23
67°
49°
24
66°
53°
25
67°
52°
26
67°
57°
27
72°
55°
28
69°
53°
29
68°
57°
30
69°
57°
31
71°
56°
1
72°
51°
2
68°
52°
3
68°
56°
4
71°
51°
5
68°
51°
6
68°
52°
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 61° to 72°, with overnight lows between 46° and 57°. The average high for May is 66° with an average low of 51°. 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.
