S
M
T
W
T
F
S
30
70°
58°
31
71°
59°
1
72°
60°
2
72°
58°
3
71°
52°
4
70°
57°
5
70°
57°
6
69°
56°
7
70°
55°
8
68°
51°
9
64°
53°
10
62°
48°
11
67°
53°
12
65°
51°
13
60°
49°
14
60°
47°
15
61°
45°
16
61°
49°
17
60°
47°
18
59°
50°
19
60°
48°
20
60°
50°
21
62°
48°
22
64°
46°
23
62°
51°
24
58°
53°
25
Hist. Avg.
62°
47°
26
Hist. Avg.
62°
47°
27
Hist. Avg.
61°
47°
28
Hist. Avg.
61°
47°
29
Hist. Avg.
61°
46°
30
Hist. Avg.
60°
46°
1
Hist. Avg.
60°
46°
2
Hist. Avg.
60°
46°
3
Hist. Avg.
60°
46°
Temperature Graph
°F
Avg. Hi
Avg. Lo
Actual Hi
Actual Lo
Forecast Hi
Forecast Lo
*Temporarily Unavailable
September Weather in Tsawwassen
Tsawwassen's September 2026 forecast shows daily high temperatures ranging from 58° to 72°, with overnight lows between 45° and 60°. The average high for September is 65° with an average low of 52°. AccuWeather's monthly forecast extends further ahead than any other source, with day-by-day RealFeel® Temperatures giving a complete picture of how September weather will actually feel in Tsawwassen. See also: October | November | December.