S
M
T
W
T
F
S
26
43°
32°
27
53°
27°
28
50°
25°
29
43°
23°
30
40°
33°
1
46°
38°
2
56°
29°
3
48°
28°
4
53°
34°
5
70°
41°
6
68°
48°
7
54°
43°
8
52°
36°
9
60°
41°
10
53°
43°
11
56°
43°
12
56°
39°
13
58°
38°
14
59°
41°
15
53°
41°
16
55°
39°
17
53°
38°
18
54°
38°
19
54°
32°
20
52°
41°
21
53°
40°
22
52°
40°
23
52°
39°
24
53°
40°
25
53°
42°
26
54°
43°
27
57°
39°
28
53°
38°
29
53°
38°
30
54°
40°
31
55°
40°
1
62°
46°
2
62°
45°
3
58°
44°
4
57°
45°
5
57°
46°
6
64°
45°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Sydney
Sydney's May 2026 forecast shows daily high temperatures ranging from 52° to 68°, with overnight lows between 32° and 48°. The average high for May is 56° with an average low of 41°. 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 Sydney. See also: June | July | August.