S
M
T
W
T
F
S
26
51°
46°
27
56°
47°
28
65°
42°
29
66°
41°
30
66°
39°
1
67°
40°
2
62°
42°
3
62°
41°
4
63°
42°
5
66°
41°
6
65°
42°
7
64°
43°
8
61°
42°
9
60°
42°
10
60°
41°
11
61°
42°
12
61°
43°
13
62°
41°
14
62°
41°
15
63°
43°
16
62°
44°
17
60°
42°
18
61°
43°
19
62°
44°
20
64°
45°
21
68°
46°
22
69°
46°
23
67°
45°
24
69°
45°
25
70°
46°
26
71°
47°
27
71°
47°
28
70°
46°
29
71°
46°
30
70°
44°
31
66°
42°
1
64°
41°
2
65°
44°
3
66°
45°
4
65°
44°
5
69°
45°
6
70°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
May Weather in Big Sur
Big Sur's May 2026 forecast shows daily high temperatures ranging from 51° to 71°, with overnight lows between 39° and 47°. The average high for May is 65° with an average low of 43°. 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 Big Sur. See also: June | July | August.