North Cowichan weather in September

In September, North Cowichan sees average daytime highs of 19°C and overnight lows near 10°C, with 66 mm of rain across 8.7 wet days and about 12.4 hours of daylight. It is the 3rd-warmest and 9th-wettest month of the year here.

Highs ease over the month, from about 21°C in the first days to 17°C by the end. The sky is clear or mostly clear about 39% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 18 min at the start of September to 11 h 30 min by month's end. Set against the rest of the year, September is North Cowichan's 3rd-clearest and 11th-windiest month. For the whole year in context, see North Cowichan's year-round climate.

Daytime high
19°
3rd warmest
Overnight low
10°
10th coldest
Rainfall
66 mm
8.7 wet days
Daylight
12 h 24 min
5:58 AM – 6:20 PM
Cloud cover
49%
3rd clearest
Wind
5 km/h
11th windiest
Solar energy
4.13 kWh/m²
Travel score
6.5
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 21°C in the first days to 17°C by the end.

A typical September day in North Cowichan reaches about 19°C in the afternoon and slips back to 10°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 25°C. Set against its neighbours, September runs about 4°C cooler than August and about 6°C warmer than October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12112
22111
32111
42111
52111
62111
72111
82111
92011
102011
112011
122011
132011
142010
151910
161910
171910
181910
191910
201910
211910
221810
23189
24189
25189
26189
27179
28179
29179
30178

How September really feels in North Cowichan

Once humidity and wind are folded in, September averages 0 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

North Cowichan weather by month

How September compares with the rest of the year at a glance. September is the 3rd-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan / 21317.87.18.50.1
Feb / 13314.46.39.80.7
Mar / 15717.46.611.61.4
Apr12° / 11015.61.713.42.8
May16° / 7011.40.1155.0
Jun19° / 10°529.3015.96.2
Jul23° / 13°275015.57.8
Aug23° / 13°395.1014.27.9
Sep19° / 10°668.7012.46.5
Oct13° / 14013.70.210.53.4
Nov / 21218.13.88.91.0
Dec / 21017.78.68.10.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 39% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15644
25743
35743
45743
55941
65941
75842
85941
95941
105842
115842
125842
135842
145743
155743
165842
175743
185743
195842
205743
215743
225743
235743
245842
255842
265743
275743
285644
295545
305347

Chance of precipitation in September

Any precipitation

North Cowichan gets around 66 mm of rain over 8.7 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 29% and peaks near 32% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
123
223
324
424
525
625
726
826
927
1028
1129
1230
1330
1430
1531
1631
1731
1832
1932
2032
2132
2232
2332
2432
2531
2631
2731
2831
2931
3032

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

Most of September feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, September lands in the dry band about 93% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
19010
29010
39010
49010
5919
6919
7919
8928
9928
10928
11928
12928
13928
14928
15928
16928
17928
18937
19937
20937
21946
22946
23955
24955
25964
26964
27973
28973
29982
30982

Wind in September

Winds average 5 km/h in September.

Across September, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 18 min at the start of September to 11 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 108 minutes over September. Sunrise moves from 5:37 AM to 6:19 AM, and sunset from 6:52 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:376:52
213.25:386:50
313.15:396:48
413.15:416:46
513.05:426:44
613.05:446:42
712.95:456:39
812.85:476:37
912.85:486:35
1012.75:506:33
1112.75:516:31
1212.65:536:29
1312.55:546:26
1412.55:566:24
1512.45:576:22
1612.45:586:20
1712.36:006:17
1812.26:016:15
1912.26:036:13
2012.16:046:11
2112.06:066:09
2212.06:076:06
2311.96:096:04
2411.96:106:02
2511.86:126:00
2611.76:135:58
2711.76:155:55
2811.66:165:53
2911.66:185:51
3011.56:195:49

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.13 kWh/m².

For context, solar energy here swings from a low near 0.83 kWh/m² to a high of 6.62 kWh/m² in July across the year — September's 4.13 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.8Bright
34.8Bright
44.7Bright
54.7Bright
64.6Bright
74.6Bright
84.5Bright
94.5Bright
104.4Bright
114.4Bright
124.3Bright
134.3Bright
144.2Bright
154.1Bright
164.1Bright
174.0Bright
183.9Moderate
193.9Moderate
203.8Moderate
213.8Moderate
223.7Moderate
233.7Moderate
243.6Moderate
253.5Moderate
263.5Moderate
273.4Moderate
283.4Moderate
293.3Moderate
303.3Moderate
Planning a trip in September

Hazard calendar for North Cowichan

In seasonPeak

None of North Cowichan's seasonal hazards are active in September. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

North Cowichan's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit North Cowichan?

Our two travel scores rate September for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.5
Sightseeing
3rd-best month of the year
2.9
Beach & pool
3rd-best month of the year

September is a reasonable time to visit North Cowichan for sightseeing.

What to pack for North Cowichan in September

From September's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In September, North Cowichan sees daytime highs around 19°C and nights near 10°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near North Cowichan in September

The nearest coast averages about 14°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 23 km away) is warmest in August at about 16°C and coldest in January near 7°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

5°10°15°JanFebMarAprMayJunJulAugSepOctNovDecbracingcool
Sea temperature (°C)Comfort
Jan7Bracing
Feb7Bracing
Mar8Bracing
Apr10Bracing
May12Bracing
Jun14Bracing
Jul16Cool
Aug16Cool
Sep14Bracing
Oct11Bracing
Nov9Bracing
Dec8Bracing

UV index in North Cowichan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in North Cowichan peaks around July 18 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 19 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 7 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJul 18UV 8Dec 19UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May7High
Jun6High
Jul8Very high
Aug6High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in North Cowichan in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in North Cowichan is worst in October — around 16 µg/m³ PM2.5 (moderate), about 3.7× the cleanest month (December, 4 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodOct 1815 µg/m³Dec 225 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar9Good
Apr9Good
May9Good
Jun8Good
Jul8Good
Aug12Moderate
Sep10Good
Oct16Moderate
Nov12Good
Dec4Good
Location & terrain

Where is North Cowichan?

North Cowichan sits at 48.8°N, 123.7°W, 145 m above sea level, in Canada. The nearest listed city is Duncan, 7.0 km away.

Topography around North Cowichan

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of North Cowichan.

Within 3 km, the terrain around North Cowichan has significant variations in elevation — a maximum elevation change of 359 m around an average of 96 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,265 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,725 m.

The land around North Cowichan is covered by trees (73%) and grassland (24%) within 3 km, trees (63%) and water (23%) within 16 km, and water (47%) and trees (46%) within 80 km.

3 km
359 m
16 km
1,265 m
80 km
1,725 m
treesgrasslandartificial surfaceswater
September weather nearby: Duncan 7.0 km · Central Saanich 36 km · Harewood 39 km · Saanich 40 km · Nanaimo 41 km · Langford 46 km · Carey 46 km · Colwood 48 km

Canada travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type A / B
120 V · 60 Hz
Prices
≈ 83% of US
price level, 2025
GDP per capita
$55,698
2025
Happiness
6.7 / 10
World Happiness, 2025
Safe drinking water
97%
of population, 2024
Homicide rate
2
per 100k, 2023
Road deaths
5.3
per 100k/yr, 2019
Income group
High
World Bank
Religion
Christian 53%none 35%Muslim 5%Hindu 2%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for North Cowichan (48.8413°, -123.686°, elevation 145 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).