S
M
T
W
T
F
S
26
67°
52°
27
59°
51°
28
57°
48°
29
60°
50°
30
63°
53°
1
60°
54°
2
68°
53°
3
69°
56°
4
76°
59°
5
69°
57°
6
59°
55°
7
62°
51°
8
58°
54°
9
64°
53°
10
65°
55°
11
61°
54°
12
67°
55°
13
65°
55°
14
58°
52°
15
54°
49°
16
62°
44°
17
64°
49°
18
64°
50°
19
66°
48°
20
65°
50°
21
67°
46°
22
64°
48°
23
65°
46°
24
61°
47°
25
64°
46°
26
66°
50°
27
66°
49°
28
68°
50°
29
67°
47°
30
63°
47°
31
64°
46°
1
70°
50°
2
72°
52°
3
72°
51°
4
71°
51°
5
70°
49°
6
71°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Gillies Bay
Gillies Bay's May 2026 forecast shows daily high temperatures ranging from 61° to 72°, with overnight lows between 44° and 52°. The average high for May is 66° with an average low of 49°. 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 Gillies Bay. See also: June | July | August.