S
M
T
W
T
F
S
26
84°
68°
27
87°
70°
28
88°
70°
29
85°
69°
30
88°
68°
31
85°
64°
1
82°
64°
2
83°
65°
3
83°
68°
4
88°
70°
5
89°
70°
6
90°
68°
7
85°
68°
8
88°
68°
9
88°
67°
10
86°
61°
11
82°
62°
12
83°
63°
13
82°
62°
14
85°
62°
15
82°
64°
16
81°
67°
17
82°
66°
18
82°
64°
19
81°
62°
20
81°
62°
21
82°
66°
22
82°
67°
23
83°
65°
24
86°
67°
25
86°
61°
26
85°
60°
27
80°
61°
28
80°
62°
29
79°
64°
30
81°
65°
31
80°
66°
1
85°
60°
2
80°
60°
3
80°
61°
4
79°
59°
5
79°
59°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
August Weather in Blenheim
Blenheim's August 2026 forecast shows daily high temperatures ranging from 79° to 90°, with overnight lows between 59° and 70°. The average high for August is 84° 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 Blenheim. See also: September | October | November.
