S
M
T
W
T
F
S
26
73°
50°
27
79°
52°
28
73°
52°
29
75°
55°
30
66°
54°
1
70°
52°
2
75°
52°
3
77°
55°
4
72°
55°
5
70°
54°
6
68°
54°
7
64°
55°
8
75°
54°
9
75°
59°
10
73°
55°
11
72°
59°
12
73°
54°
13
66°
54°
14
68°
50°
15
72°
61°
16
63°
55°
17
72°
55°
18
72°
52°
19
75°
57°
20
79°
61°
21
79°
61°
22
82°
64°
23
84°
70°
24
86°
63°
25
86°
71°
26
89°
71°
27
85°
73°
28
88°
69°
29
85°
68°
30
82°
67°
31
82°
67°
1
81°
69°
2
81°
70°
3
80°
69°
4
81°
70°
5
82°
71°
6
73°
63°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Split
Split's May 2026 forecast shows daily high temperatures ranging from 73° to 89°, with overnight lows between 63° and 73°. The average high for May is 83° with an average low of 69°. 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 Split. See also: June | July | August.