S
M
T
W
T
F
S
26
73°
66°
27
73°
65°
28
74°
66°
29
77°
65°
30
76°
64°
1
77°
60°
2
76°
62°
3
78°
63°
4
77°
64°
5
76°
63°
6
73°
64°
7
74°
63°
8
75°
63°
9
77°
62°
10
77°
63°
11
74°
58°
12
72°
58°
13
72°
59°
14
73°
60°
15
72°
61°
16
72°
62°
17
71°
61°
18
75°
60°
19
77°
57°
20
76°
59°
21
76°
56°
22
75°
61°
23
75°
61°
24
76°
60°
25
75°
61°
26
73°
61°
27
76°
60°
28
76°
56°
29
75°
56°
30
74°
60°
31
71°
58°
1
70°
59°
2
71°
60°
3
70°
59°
4
70°
59°
5
71°
58°
6
71°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Caloundra
Caloundra's May 2026 forecast shows daily high temperatures ranging from 70° to 78°, with overnight lows between 56° and 66°. The average high for May is 74° with an average low of 61°. 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 Caloundra. See also: June | July | August.