S
M
T
W
T
F
S
26
59°
47°
27
62°
41°
28
65°
39°
29
67°
44°
30
69°
41°
1
74°
49°
2
60°
41°
3
59°
34°
4
70°
46°
5
71°
49°
6
65°
50°
7
63°
53°
8
58°
35°
9
52°
35°
10
53°
43°
11
60°
45°
12
60°
42°
13
58°
37°
14
58°
38°
15
65°
36°
16
54°
40°
17
58°
33°
18
62°
34°
19
60°
35°
20
52°
46°
21
53°
43°
22
56°
37°
23
54°
35°
24
58°
45°
25
57°
39°
26
62°
34°
27
46°
41°
28
51°
49°
29
54°
45°
30
60°
44°
31
56°
46°
1
50°
45°
2
56°
46°
3
57°
48°
4
59°
51°
5
58°
49°
6
57°
47°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Mar del Plata
Mar del Plata's May 2026 forecast shows daily high temperatures ranging from 50° to 60°, with overnight lows between 44° and 51°. The average high for May is 56° 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 Mar del Plata. See also: June | July | August.