S
M
T
W
T
F
S
26
54°
32°
27
60°
32°
28
58°
34°
29
59°
36°
30
55°
37°
1
55°
36°
2
56°
36°
3
55°
34°
4
59°
36°
5
60°
35°
6
52°
35°
7
58°
34°
8
57°
37°
9
55°
35°
10
55°
33°
11
56°
36°
12
55°
34°
13
56°
34°
14
56°
35°
15
57°
35°
16
54°
36°
17
55°
35°
18
56°
35°
19
58°
36°
20
59°
36°
21
60°
37°
22
60°
37°
23
64°
44°
24
66°
44°
25
64°
43°
26
62°
41°
27
61°
42°
28
65°
40°
29
69°
45°
30
66°
46°
31
66°
46°
1
63°
45°
2
64°
43°
3
68°
47°
4
72°
47°
5
66°
41°
6
66°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sussex
Sussex's May 2026 forecast shows daily high temperatures ranging from 52° to 72°, with overnight lows between 32° and 47°. The average high for May is 60° with an average low of 38°. 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 Sussex. See also: June | July | August.