S
M
T
W
T
F
S
26
67°
28°
27
70°
30°
28
60°
44°
29
50°
36°
30
50°
27°
1
49°
26°
2
46°
25°
3
55°
22°
4
74°
42°
5
60°
34°
6
50°
34°
7
50°
30°
8
56°
32°
9
61°
37°
10
52°
36°
11
53°
28°
12
55°
24°
13
54°
40°
14
51°
36°
15
66°
30°
16
68°
37°
17
72°
53°
18
86°
60°
19
81°
44°
20
50°
33°
21
55°
34°
22
63°
42°
23
64°
44°
24
68°
51°
25
68°
47°
26
68°
48°
27
67°
47°
28
71°
48°
29
68°
44°
30
70°
50°
31
69°
49°
1
69°
49°
2
68°
50°
3
67°
50°
4
64°
48°
5
64°
47°
6
69°
51°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Port Sydney
Port Sydney's May 2026 forecast shows daily high temperatures ranging from 50° to 86°, with overnight lows between 33° and 60°. The average high for May is 68° with an average low of 47°. 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 Port Sydney. See also: June | July | August.