S
M
T
W
T
F
S
26
72°
65°
27
72°
64°
28
73°
65°
29
71°
65°
30
72°
64°
1
74°
65°
2
75°
65°
3
74°
64°
4
75°
64°
5
74°
63°
6
74°
64°
7
75°
63°
8
74°
63°
9
73°
62°
10
74°
63°
11
74°
63°
12
75°
62°
13
71°
62°
14
71°
61°
15
72°
62°
16
73°
62°
17
72°
61°
18
73°
62°
19
73°
62°
20
74°
61°
21
72°
61°
22
70°
55°
23
70°
56°
24
69°
58°
25
70°
56°
26
69°
58°
27
72°
58°
28
72°
55°
29
70°
56°
30
68°
55°
31
68°
59°
1
69°
60°
2
69°
60°
3
68°
59°
4
72°
57°
5
69°
58°
6
67°
57°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Byron Bay
Byron Bay's May 2026 forecast shows daily high temperatures ranging from 67° to 75°, with overnight lows between 55° and 65°. The average high for May is 72° 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 Byron Bay. See also: June | July | August.