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Monthly
Precipitation
Temperature
Wind
Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
Chemainus, BC
Exceptional El Niño dominates this fall
Content continues below
Content continues below
September
Average Temperature
High
19°
Feels 19
Low
11°
Feels 10
Average Precipitation
12 Days
Rain amount
65.8mm
Snow amount
0cm
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
18°
22
18°
23
16°
24
15°
25
15°
26
15°
27
16°
28
16°
29
16°
30
15°
Forecast
Monday, September 21, 2026
Day
18°
Feels 20
Wind
6 km/h NE
Gust
9 km/h
Humidity
68%
P.O.P
20%
Night
12°
Feels 12
Wind
8 km/h W
Gust
12 km/h
Humidity
88%
P.O.P
10%
Historical Averages
Sep 21
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.