S
M
T
W
T
F
S
26
64°
57°
27
64°
59°
28
64°
59°
29
70°
61°
30
70°
59°
1
75°
55°
2
N/A
3
68°
54°
4
60°
48°
5
59°
48°
6
61°
45°
7
72°
54°
8
68°
51°
9
66°
51°
10
65°
50°
11
66°
53°
12
66°
53°
13
65°
52°
14
67°
52°
15
66°
49°
16
60°
48°
17
61°
49°
18
60°
49°
19
61°
48°
20
61°
48°
21
62°
47°
22
62°
49°
23
63°
48°
24
62°
48°
25
63°
49°
26
68°
52°
27
66°
53°
28
64°
52°
29
64°
52°
30
68°
55°
31
71°
56°
1
71°
56°
2
70°
55°
3
69°
56°
4
65°
55°
5
65°
53°
6
64°
52°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Erratzu
Erratzu's May 2026 forecast shows daily high temperatures ranging from 59° to 72°, with overnight lows between 45° and 56°. The average high for May is 65° 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 Erratzu. See also: June | July | August.