S
M
T
W
T
F
S
26
52°
40°
27
55°
42°
28
55°
43°
29
58°
45°
30
59°
47°
1
62°
45°
2
55°
38°
3
56°
40°
4
55°
41°
5
55°
41°
6
56°
42°
7
55°
40°
8
55°
40°
9
56°
42°
10
59°
46°
11
59°
47°
12
60°
45°
13
58°
43°
14
60°
46°
15
63°
47°
16
63°
47°
17
64°
48°
18
63°
44°
19
62°
47°
20
65°
49°
21
62°
49°
22
66°
48°
23
67°
47°
24
64°
50°
25
65°
50°
26
67°
51°
27
67°
51°
28
68°
50°
29
62°
49°
30
64°
52°
31
65°
49°
1
68°
48°
2
63°
46°
3
63°
45°
4
64°
45°
5
64°
44°
6
63°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Wilhelmshaven
Wilhelmshaven's May 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 38° and 52°. The average high for May is 61° with an average low of 46°. 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 Wilhelmshaven. See also: June | July | August.