S
M
T
W
T
F
S
26
82°
66°
27
80°
68°
28
79°
68°
29
79°
69°
30
80°
67°
31
80°
67°
1
81°
64°
2
81°
71°
3
80°
69°
4
79°
63°
5
79°
62°
6
80°
65°
7
83°
65°
8
81°
63°
9
82°
67°
10
82°
69°
11
80°
70°
12
81°
70°
13
80°
68°
14
81°
68°
15
79°
68°
16
80°
67°
17
79°
69°
18
79°
67°
19
78°
68°
20
79°
66°
21
80°
67°
22
74°
59°
23
81°
65°
24
76°
62°
25
79°
62°
26
80°
64°
27
80°
65°
28
79°
65°
29
80°
64°
30
80°
63°
31
79°
62°
1
79°
62°
2
78°
61°
3
77°
60°
4
78°
60°
5
78°
62°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Carlsbad
Carlsbad's August 2026 forecast shows daily high temperatures ranging from 74° to 82°, with overnight lows between 59° and 70°. The average high for August is 79° with an average low of 65°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how August weather will actually feel in Carlsbad. See also: September | October | November.