West Kelowna weather in September

In September, West Kelowna sees average daytime highs of 18°C and overnight lows near 9°C, with 41 mm of precipitation across 7.3 wet days and about 12.4 hours of daylight. It is the 4th-warmest and 10th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 16°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 West Kelowna's 3rd-clearest and 11th-windiest month. For the whole year in context, see West Kelowna's year-round climate.

Daytime high
18°
4th warmest
Overnight low
10th coldest
Precipitation
41 mm
7.3 wet days
Daylight
12 h 24 min
5:42 AM – 6:04 PM
Cloud cover
49%
3rd clearest
Wind
5 km/h
11th windiest
Solar energy
4.26 kWh/m²
Travel score
6.3
out of 10

West Kelowna is city in the Regional District of Central Okanagan, British Columbia, Canada.

Density
233/km²
people per km²
Founded
2007

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 16°C by the end.

A typical September day in West Kelowna reaches about 18°C in the afternoon and slips back to 9°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 13°C and 24°C. Set against its neighbours, September runs about 5°C cooler than August and about 8°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12111
22111
32111
42010
52010
62010
72010
82010
92010
101910
111910
121910
13199
14199
15189
16189
17189
18189
19189
20178
21178
22178
23178
24178
25168
26168
27167
28167
29157
30157

How September really feels in West Kelowna

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.

West Kelowna weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -6°5913.3138.40.0
Feb / -6°4210.39.39.70.0
Mar / -3°5811.88.711.50.3
Apr10° / 46103.513.52.2
May15° / 5310.10.715.14.6
Jun18° / 529.90.1165.8
Jul23° / 11°295.1015.77.8
Aug23° / 12°245.2014.37.9
Sep18° / 417.30.112.46.3
Oct11° / 6711.61.610.52.5
Nov / -1°8615.3108.80.1
Dec-1° / -5°6613.714.180.0

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 17% of September, with mostly cloudy or overcast conditions the remaining 44%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16139
26040
36040
46040
56040
66040
75941
85842
95842
105743
115743
125644
135644
145644
155545
165545
175545
185545
195446
205446
215545
225545
235545
245545
255446
265446
275446
285446
295347
305347

Chance of precipitation in September

Any precipitation

West Kelowna gets around 41 mm of rain and snow over 7.3 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 25% and peaks near 26% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%151015202530
Rain chance (%)
121
222
322
422
523
623
723
824
924
1024
1125
1225
1325
1426
1526
1626
1726
1826
1926
2026
2126
2226
2326
2426
2526
2625
2725
2825
2925
3026

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1982
2982
3982
4982
5982
6982
7982
8982
9982
10982
11982
12991
13991
14991
15991
16991
17991
18991
191000
201000
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000

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
245calm
255calm
265calm
275calm
285calm
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 5:19 AM to 6:03 AM, and sunset from 6:37 PM to 5:32 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.35:196:37
213.25:206:35
313.25:226:33
413.15:236:31
513.15:256:29
613.05:266:26
712.95:286:24
812.95:296:22
912.85:316:20
1012.75:326:17
1112.75:346:15
1212.65:366:13
1312.65:376:10
1412.55:396:08
1512.45:406:06
1612.45:426:04
1712.35:436:01
1812.25:455:59
1912.25:465:57
2012.15:485:55
2112.05:495:52
2212.05:515:50
2311.95:525:48
2411.95:545:45
2511.85:565:43
2611.75:575:41
2711.75:595:39
2811.66:005:36
2911.56:025:34
3011.56:035:32

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.26 kWh/m².

For context, solar energy here swings from a low near 1.01 kWh/m² to a high of 6.88 kWh/m² in July across the year — September's 4.26 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.0Bright
25.0Bright
34.9Bright
44.9Bright
54.8Bright
64.8Bright
74.7Bright
84.7Bright
94.6Bright
104.6Bright
114.5Bright
124.5Bright
134.4Bright
144.3Bright
154.3Bright
164.2Bright
174.2Bright
184.1Bright
194.0Bright
204.0Moderate
213.9Moderate
223.9Moderate
233.8Moderate
243.8Moderate
253.7Moderate
263.7Moderate
273.6Moderate
283.6Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit West Kelowna?

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

6.3
Sightseeing
3rd-best month of the year
2.3
Beach & pool
3rd-best month of the year

September is a reasonable time to visit West Kelowna for sightseeing.

What to pack for West Kelowna in September

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

In September, West Kelowna sees daytime highs around 18°C and nights near 9°C. Little to plan around — just the basics. About 7 days see rain.

UV index in West Kelowna 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 West Kelowna peaks around July 17 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near December 15 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 17UV 8Dec 15UV 1
UV index (midday)Level
Jan1Low
Feb1Low
Mar4Moderate
Apr5Moderate
May6High
Jun6High
Jul8Very high
Aug7High
Sep4Moderate
Oct3Moderate
Nov1Low
Dec1Low

Air quality in West Kelowna 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 West Kelowna is worst in August — around 62 µg/m³ PM2.5 (unhealthy), about 12.8× the cleanest month (January, 5 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModeratePoorAug 1657 µg/m³Jan 215 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb5Good
Mar7Good
Apr7Good
May8Good
Jun8Good
Jul29Moderate
Aug62Unhealthy
Sep22Moderate
Oct39Poor
Nov44Poor
Dec6Good
Location & terrain

Where is West Kelowna?

West Kelowna sits at 49.9°N, 119.6°W, 484 m above sea level, in Canada. The nearest listed city is Kelowna, 7.0 km away.

Topography around West Kelowna

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

Within 3 km, the terrain around West Kelowna has large variations in elevation — a maximum elevation change of 832 m around an average of 544 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,286 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,072 m.

The land around West Kelowna is covered by trees (47%) and artificial surfaces (27%) within 3 km, trees (60%) within 16 km, and trees (75%) and grassland (21%) within 80 km.

3 km
832 m
16 km
1,286 m
80 km
2,072 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Kelowna 7.0 km · Okanagan Mission 9.0 km · Rutland 15 km · Lake Country 21 km · Penticton 42 km · Vernon 50 km · Salmon Arm 96 km · Kamloops 104 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 West Kelowna (49.8625°, -119.5833°, elevation 484 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. 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).