S
M
T
W
T
F
S
26
73°
52°
27
76°
49°
28
80°
54°
29
83°
58°
30
84°
62°
1
86°
63°
2
69°
52°
3
66°
46°
4
69°
46°
5
68°
45°
6
68°
47°
7
64°
42°
8
69°
44°
9
69°
48°
10
67°
46°
11
68°
47°
12
72°
48°
13
75°
52°
14
77°
55°
15
68°
57°
16
72°
57°
17
70°
49°
18
66°
46°
19
70°
49°
20
71°
47°
21
74°
50°
22
N/A
23
69°
56°
24
62°
52°
25
63°
55°
26
67°
55°
27
65°
53°
28
66°
55°
29
64°
46°
30
65°
47°
31
62°
44°
1
58°
51°
2
66°
48°
3
69°
49°
4
65°
48°
5
64°
49°
6
65°
49°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
May Weather in Port Lincoln
Port Lincoln's May 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 44° and 56°. The average high for May is 65° with an average low of 50°. 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 Lincoln. See also: June | July | August.