S
M
T
W
T
F
S
26
84°
77°
27
85°
76°
28
84°
77°
29
84°
77°
30
85°
78°
31
84°
77°
1
83°
76°
2
82°
76°
3
82°
77°
4
83°
76°
5
81°
76°
6
82°
77°
7
83°
76°
8
82°
76°
9
84°
77°
10
85°
76°
11
84°
77°
12
83°
77°
13
84°
78°
14
84°
77°
15
83°
77°
16
82°
76°
17
84°
77°
18
85°
78°
19
85°
78°
20
83°
77°
21
83°
77°
22
84°
76°
23
83°
76°
24
83°
76°
25
84°
76°
26
Hist. Avg.
87°
75°
27
Hist. Avg.
87°
75°
28
Hist. Avg.
87°
75°
29
Hist. Avg.
87°
75°
30
Hist. Avg.
87°
75°
31
Hist. Avg.
87°
75°
1
Hist. Avg.
87°
75°
2
Hist. Avg.
87°
75°
3
Hist. Avg.
87°
75°
4
Hist. Avg.
87°
75°
5
Hist. Avg.
87°
74°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
August Weather in Vientiane
Vientiane's August 2026 forecast shows daily high temperatures ranging from 81° to 85°, with overnight lows between 76° and 78°. The average high for August is 83° with an average low of 77°. 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 Vientiane. See also: September | October | November.
