S
M
T
W
T
F
S
26
59°
45°
27
58°
43°
28
57°
43°
29
62°
40°
30
66°
45°
1
65°
43°
2
57°
51°
3
54°
48°
4
54°
46°
5
53°
43°
6
53°
39°
7
56°
44°
8
54°
44°
9
53°
39°
10
54°
36°
11
52°
43°
12
55°
44°
13
54°
43°
14
54°
41°
15
53°
39°
16
52°
38°
17
54°
44°
18
57°
45°
19
61°
49°
20
59°
51°
21
64°
53°
22
64°
56°
23
66°
54°
24
69°
51°
25
66°
49°
26
58°
46°
27
69°
57°
28
68°
53°
29
60°
51°
30
63°
51°
31
61°
50°
1
60°
49°
2
60°
49°
3
61°
48°
4
60°
49°
5
59°
50°
6
60°
50°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in PortBallintrae
PortBallintrae's May 2026 forecast shows daily high temperatures ranging from 58° to 69°, with overnight lows between 46° and 57°. The average high for May is 63° 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 PortBallintrae. See also: June | July | August.
