S
M
T
W
T
F
S
26
63°
46°
27
70°
48°
28
61°
48°
29
59°
48°
30
66°
52°
1
79°
51°
2
75°
57°
3
68°
50°
4
66°
47°
5
63°
46°
6
57°
42°
7
58°
42°
8
61°
45°
9
64°
48°
10
64°
50°
11
65°
50°
12
67°
51°
13
60°
42°
14
60°
40°
15
63°
47°
16
65°
48°
17
66°
47°
18
66°
47°
19
65°
46°
20
63°
44°
21
64°
44°
22
62°
43°
23
62°
44°
24
64°
44°
25
64°
42°
26
62°
43°
27
64°
48°
28
66°
49°
29
68°
49°
30
69°
44°
31
62°
43°
1
62°
43°
2
61°
42°
3
62°
44°
4
63°
43°
5
63°
43°
6
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sidcup
Sidcup's May 2026 forecast shows daily high temperatures ranging from 57° to 79°, with overnight lows between 40° and 57°. The average high for May is 64° 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 Sidcup. See also: June | July | August.