S
M
T
W
T
F
S
26
63°
41°
27
63°
43°
28
66°
46°
29
63°
41°
30
59°
39°
1
66°
43°
2
73°
48°
3
66°
50°
4
63°
43°
5
59°
50°
6
54°
45°
7
54°
43°
8
59°
45°
9
66°
43°
10
64°
50°
11
52°
37°
12
48°
34°
13
52°
41°
14
52°
39°
15
52°
37°
16
56°
39°
17
64°
46°
18
61°
41°
19
61°
52°
20
69°
52°
21
72°
51°
22
75°
52°
23
79°
56°
24
78°
55°
25
76°
54°
26
74°
53°
27
73°
52°
28
76°
53°
29
64°
48°
30
67°
50°
31
66°
51°
1
65°
49°
2
65°
48°
3
66°
48°
4
67°
50°
5
67°
57°
6
70°
58°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sankt Goar
Sankt Goar's May 2026 forecast shows daily high temperatures ranging from 56° to 79°, with overnight lows between 39° and 58°. The average high for May is 69° 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 Sankt Goar. See also: June | July | August.