S
M
T
W
T
F
S
26
61°
41°
27
64°
38°
28
67°
45°
29
67°
46°
30
69°
47°
1
77°
44°
2
71°
49°
3
63°
54°
4
67°
49°
5
60°
49°
6
61°
47°
7
63°
39°
8
65°
47°
9
68°
43°
10
63°
45°
11
53°
44°
12
55°
42°
13
56°
43°
14
56°
39°
15
54°
37°
16
56°
37°
17
61°
46°
18
56°
45°
19
59°
54°
20
64°
55°
21
68°
53°
22
78°
61°
23
80°
59°
24
79°
58°
25
74°
58°
26
74°
58°
27
73°
57°
28
73°
56°
29
70°
54°
30
71°
55°
31
61°
52°
1
60°
50°
2
61°
50°
3
61°
51°
4
65°
55°
5
64°
55°
6
67°
56°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Leiden
Leiden's May 2026 forecast shows daily high temperatures ranging from 56° to 80°, with overnight lows between 45° and 61°. The average high for May is 68° with an average low of 55°. 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 Leiden. See also: June | July | August.