Kelowna weather in September

In September, Kelowna sees average daytime highs of 18°C and overnight lows near 9°C, with 43 mm of precipitation across 7.7 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 16°C by the end. The sky is clear or mostly clear about 38% 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 Kelowna's 3rd-clearest and 10th-windiest month. For the whole year in context, see Kelowna's year-round climate.

Daytime high: 18°; 3rd warmest
Overnight low: 9°; 10th coldest
Precipitation: 43 mm; 7.7 wet days
Daylight: 12 h 24 min; 5:41 AM – 6:03 PM
Cloud cover: 50%; 3rd clearest
Wind: 5 km/h; 10th windiest
Solar energy: 4.2 kWh/m²
Travel score: 6.3; out of 10

Kelowna is city in British Columbia, Canada.

Air quality: Moderate; PM2.5 12 µg/m³ · 2018
Density: 683/km²; people per km²
Founded: 1859

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

← August Kelowna year-round climate October →Best places to visit in September

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

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 16°C by the end.

A typical September day in 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 7°C warmer than October.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Avg high (°C)	21	21	21	20	20	20	20	20	20	19	19	19	19	19	19	18	18	18	18	18	17	17	17	17	17	16	16	16	16	15
Avg low (°C)	11	11	11	11	11	11	11	10	10	10	10	10	10	10	10	9	9	9	9	9	9	9	8	8	8	8	8	8	7	7

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	20	11
5	20	11
6	20	11
7	20	11
8	20	10
9	20	10
10	19	10
11	19	10
12	19	10
13	19	10
14	19	10
15	19	10
16	18	9
17	18	9
18	18	9
19	18	9
20	18	9
21	17	9
22	17	9
23	17	8
24	17	8
25	17	8
26	16	8
27	16	8
28	16	8
29	16	7
30	15	7

How September really feels in 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

heat index over the day's high

Days feeling ≤ 0°C

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.

Kelowna 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.

Month	High / Low (°C)	Rainfall (mm)	Wet days	Snow days	Daylight (hours)	Travel score
Jan	-1° / -6°	59	13.5	13	8.4	0.0
Feb	2° / -6°	41	10	9	9.7	0.0
Mar	6° / -3°	55	11.5	8.1	11.5	0.4
Apr	10° / 1°	43	9.7	2.9	13.5	2.3
May	15° / 5°	51	9.9	0.3	15.1	4.5
Jun	18° / 8°	51	9.2	0	16	5.8
Jul	23° / 12°	30	5.3	0	15.7	7.7
Aug	23° / 13°	25	5.2	0	14.3	7.9
Sep	18° / 9°	43	7.7	0.1	12.4	6.3
Oct	11° / 4°	69	12.1	1.6	10.5	2.6
Nov	4° / -1°	87	15.5	9.9	8.8	0.1
Dec	-0° / -5°	66	13.5	14.2	8	0.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 38% 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 45%.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Clearer (%)	58	58	58	58	58	58	58	57	57	57	56	55	55	54	55	55	54	54	54	54	54	54	54	54	53	54	54	53	53	52
Cloudier (%)	42	42	42	42	42	42	42	43	43	43	44	45	45	46	45	45	46	46	46	46	46	46	46	46	47	46	46	47	47	48

	Clearer (%)	Cloudier (%)
1	58	42
2	58	42
3	58	42
4	58	42
5	58	42
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	56	44
12	55	45
13	55	45
14	54	46
15	55	45
16	55	45
17	54	46
18	54	46
19	54	46
20	54	46
21	54	46
22	54	46
23	54	46
24	54	46
25	53	47
26	54	46
27	54	46
28	53	47
29	53	47
30	52	48

Chance of precipitation in September

Any precipitation

Kelowna gets around 43 mm of rain and snow over 7.7 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 26% and peaks near 27% on the wettest days, and about 0 day brings snow.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Rain chance (%)	23	23	24	24	24	25	25	25	26	26	26	27	27	27	27	27	27	27	27	27	27	27	27	27	27	27	26	26	26	27

	Rain chance (%)
1	23
2	23
3	24
4	24
5	24
6	25
7	25
8	25
9	26
10	26
11	26
12	27
13	27
14	27
15	27
16	27
17	27
18	27
19	27
20	27
21	27
22	27
23	27
24	27
25	27
26	27
27	26
28	26
29	26
30	27

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 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Dry (%)	97	97	97	97	97	97	97	97	97	97	97	98	98	98	98	99	99	99	99	99	100	100	100	100	100	100	100	100	100	100
Comfortable (%)	3	3	3	3	3	3	3	3	3	3	3	2	2	2	2	1	1	1	1	1	0	0	0	0	0	0	0	0	0	0

	Dry (%)	Comfortable (%)
1	97	3
2	97	3
3	97	3
4	97	3
5	97	3
6	97	3
7	97	3
8	97	3
9	97	3
10	97	3
11	97	3
12	98	2
13	98	2
14	98	2
15	98	2
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

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 5 km/h at its breeziest. It stays fairly steady from day to day.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Wind speed (km/h)	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5	5
Feels	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm	calm

	Wind speed (km/h)	Feels
1	5	calm
2	5	calm
3	5	calm
4	5	calm
5	5	calm
6	5	calm
7	5	calm
8	5	calm
9	5	calm
10	5	calm
11	5	calm
12	5	calm
13	5	calm
14	5	calm
15	5	calm
16	5	calm
17	5	calm
18	5	calm
19	5	calm
20	5	calm
21	5	calm
22	5	calm
23	5	calm
24	5	calm
25	5	calm
26	5	calm
27	5	calm
28	5	calm
29	5	calm
30	5	calm

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 5:18 AM to 6:03 AM, and sunset from 6:37 PM to 5:31 PM.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Daylight (h)	13.3	13.3	13.2	13.1	13.1	13.0	12.9	12.9	12.8	12.7	12.7	12.6	12.6	12.5	12.4	12.4	12.3	12.2	12.2	12.1	12.0	12.0	11.9	11.9	11.8	11.7	11.7	11.6	11.5	11.5
Sunrise (AM)	5:18	5:20	5:21	5:23	5:24	5:26	5:27	5:29	5:31	5:32	5:34	5:35	5:37	5:38	5:40	5:41	5:43	5:44	5:46	5:47	5:49	5:51	5:52	5:54	5:55	5:57	5:58	6:00	6:01	6:03
Sunset (PM)	6:37	6:35	6:33	6:30	6:28	6:26	6:24	6:21	6:19	6:17	6:15	6:12	6:10	6:08	6:06	6:03	6:01	5:59	5:56	5:54	5:52	5:50	5:47	5:45	5:43	5:40	5:38	5:36	5:34	5:31

	Daylight (h)	Sunrise (AM)	Sunset (PM)
1	13.3	5:18	6:37
2	13.3	5:20	6:35
3	13.2	5:21	6:33
4	13.1	5:23	6:30
5	13.1	5:24	6:28
6	13.0	5:26	6:26
7	12.9	5:27	6:24
8	12.9	5:29	6:21
9	12.8	5:31	6:19
10	12.7	5:32	6:17
11	12.7	5:34	6:15
12	12.6	5:35	6:12
13	12.6	5:37	6:10
14	12.5	5:38	6:08
15	12.4	5:40	6:06
16	12.4	5:41	6:03
17	12.3	5:43	6:01
18	12.2	5:44	5:59
19	12.2	5:46	5:56
20	12.1	5:47	5:54
21	12.0	5:49	5:52
22	12.0	5:51	5:50
23	11.9	5:52	5:47
24	11.9	5:54	5:45
25	11.8	5:55	5:43
26	11.7	5:57	5:40
27	11.7	5:58	5:38
28	11.6	6:00	5:36
29	11.5	6:01	5:34
30	11.5	6:03	5:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.2 kWh/m².

For context, solar energy here swings from a low near 0.98 kWh/m² to a high of 6.86 kWh/m² in July across the year — September's 4.2 kWh/m² falls in the middle.

	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30
Solar energy (kWh/m²)	5.0	4.9	4.9	4.8	4.8	4.7	4.7	4.6	4.5	4.5	4.4	4.4	4.3	4.3	4.2	4.2	4.1	4.0	4.0	3.9	3.9	3.8	3.8	3.7	3.7	3.6	3.5	3.5	3.4	3.4
Level	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Bright	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate	Moderate

	Solar energy (kWh/m²)	Level
1	5.0	Bright
2	4.9	Bright
3	4.9	Bright
4	4.8	Bright
5	4.8	Bright
6	4.7	Bright
7	4.7	Bright
8	4.6	Bright
9	4.5	Bright
10	4.5	Bright
11	4.4	Bright
12	4.4	Bright
13	4.3	Bright
14	4.3	Bright
15	4.2	Bright
16	4.2	Bright
17	4.1	Bright
18	4.0	Bright
19	4.0	Moderate
20	3.9	Moderate
21	3.9	Moderate
22	3.8	Moderate
23	3.8	Moderate
24	3.7	Moderate
25	3.7	Moderate
26	3.6	Moderate
27	3.5	Moderate
28	3.5	Moderate
29	3.4	Moderate
30	3.4	Moderate

Planning a trip in September

Is September a good time to visit 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

2.4

Beach & pool

3rd-best month of the year

September is a reasonable time to visit Kelowna for sightseeing.

What to pack for Kelowna in September

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

In September, Kelowna sees daytime highs around 18°C and nights near 9°C. Little to plan around — just the basics. About 8 days see rain.

UV index in 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 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.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
UV index (midday)	1	1	4	5	6	6	8	7	4	3	1	1
Level	Low	Low	Moderate	Moderate	High	High	Very high	High	Moderate	Moderate	Low	Low

	UV index (midday)	Level
Jan	1	Low
Feb	1	Low
Mar	4	Moderate
Apr	5	Moderate
May	6	High
Jun	6	High
Jul	8	Very high
Aug	7	High
Sep	4	Moderate
Oct	3	Moderate
Nov	1	Low
Dec	1	Low

Air quality in 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 Kelowna is worst in August — around 33 µg/m³ PM2.5 (moderate), about 10.1× the cleanest month (January, 3 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Kelowna's WHO annual average of 12 µg/m³.

	Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
PM2.5 (µg/m³)	3	4	4	4	4	5	26	33	6	30	19	5
Level	Good	Good	Good	Good	Good	Good	Moderate	Moderate	Good	Moderate	Moderate	Good

	PM2.5 (µg/m³)	Level
Jan	3	Good
Feb	4	Good
Mar	4	Good
Apr	4	Good
May	4	Good
Jun	5	Good
Jul	26	Moderate
Aug	33	Moderate
Sep	6	Good
Oct	30	Moderate
Nov	19	Moderate
Dec	5	Good

Location & terrain

Where is Kelowna?

Kelowna sits at 49.9°N, 119.5°W, 350 m above sea level, in Canada. The nearest listed city is West Kelowna, 7.0 km away.

Topography around Kelowna

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

Within 3 km, the terrain around Kelowna has significant variations in elevation — a maximum elevation change of 276 m around an average of 361 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,343 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,082 m.

The land around Kelowna is covered by artificial surfaces (39%) and water (30%) within 3 km, trees (56%) and grassland (20%) within 16 km, and trees (76%) within 80 km.

3 km

276 m

artificial surfaces 39%

16 km

1,343 m

trees 56%

80 km

2,082 m

trees 76%

treesgrasslandcroplandartificial surfacesbare terrainwater

← August Kelowna year-round climate October →Best places to visit in September

September weather nearby: West Kelowna 7.0 km · Okanagan Mission 7.0 km · Rutland 7.0 km · Lake Country 15 km · Vernon 45 km · Penticton 45 km · Salmon Arm 92 km · Kamloops 105 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

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 Kelowna (49.8831°, -119.4857°, elevation 350 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).

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	20	11
5	20	11
6	20	11
7	20	11
8	20	10
9	20	10
10	19	10
11	19	10
12	19	10
13	19	10
14	19	10
15	19	10
16	18	9
17	18	9
18	18	9
19	18	9
20	18	9
21	17	9
22	17	9
23	17	8
24	17	8
25	17	8
26	16	8
27	16	8
28	16	8
29	16	7
30	15	7

	Clearer (%)	Cloudier (%)
1	58	42
2	58	42
3	58	42
4	58	42
5	58	42
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	56	44
12	55	45
13	55	45
14	54	46
15	55	45
16	55	45
17	54	46
18	54	46
19	54	46
20	54	46
21	54	46
22	54	46
23	54	46
24	54	46
25	53	47
26	54	46
27	54	46
28	53	47
29	53	47
30	52	48

	Rain chance (%)
1	23
2	23
3	24
4	24
5	24
6	25
7	25
8	25
9	26
10	26
11	26
12	27
13	27
14	27
15	27
16	27
17	27
18	27
19	27
20	27
21	27
22	27
23	27
24	27
25	27
26	27
27	26
28	26
29	26
30	27

	Dry (%)	Comfortable (%)
1	97	3
2	97	3
3	97	3
4	97	3
5	97	3
6	97	3
7	97	3
8	97	3
9	97	3
10	97	3
11	97	3
12	98	2
13	98	2
14	98	2
15	98	2
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	20	11
5	20	11
6	20	11
7	20	11
8	20	10
9	20	10
10	19	10
11	19	10
12	19	10
13	19	10
14	19	10
15	19	10
16	18	9
17	18	9
18	18	9
19	18	9
20	18	9
21	17	9
22	17	9
23	17	8
24	17	8
25	17	8
26	16	8
27	16	8
28	16	8
29	16	7
30	15	7

	Clearer (%)	Cloudier (%)
1	58	42
2	58	42
3	58	42
4	58	42
5	58	42
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	56	44
12	55	45
13	55	45
14	54	46
15	55	45
16	55	45
17	54	46
18	54	46
19	54	46
20	54	46
21	54	46
22	54	46
23	54	46
24	54	46
25	53	47
26	54	46
27	54	46
28	53	47
29	53	47
30	52	48

	Rain chance (%)
1	23
2	23
3	24
4	24
5	24
6	25
7	25
8	25
9	26
10	26
11	26
12	27
13	27
14	27
15	27
16	27
17	27
18	27
19	27
20	27
21	27
22	27
23	27
24	27
25	27
26	27
27	26
28	26
29	26
30	27

	Dry (%)	Comfortable (%)
1	97	3
2	97	3
3	97	3
4	97	3
5	97	3
6	97	3
7	97	3
8	97	3
9	97	3
10	97	3
11	97	3
12	98	2
13	98	2
14	98	2
15	98	2
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0

	Avg high (°C)	Avg low (°C)
1	21	11
2	21	11
3	21	11
4	20	11
5	20	11
6	20	11
7	20	11
8	20	10
9	20	10
10	19	10
11	19	10
12	19	10
13	19	10
14	19	10
15	19	10
16	18	9
17	18	9
18	18	9
19	18	9
20	18	9
21	17	9
22	17	9
23	17	8
24	17	8
25	17	8
26	16	8
27	16	8
28	16	8
29	16	7
30	15	7

	Clearer (%)	Cloudier (%)
1	58	42
2	58	42
3	58	42
4	58	42
5	58	42
6	58	42
7	58	42
8	57	43
9	57	43
10	57	43
11	56	44
12	55	45
13	55	45
14	54	46
15	55	45
16	55	45
17	54	46
18	54	46
19	54	46
20	54	46
21	54	46
22	54	46
23	54	46
24	54	46
25	53	47
26	54	46
27	54	46
28	53	47
29	53	47
30	52	48

	Rain chance (%)
1	23
2	23
3	24
4	24
5	24
6	25
7	25
8	25
9	26
10	26
11	26
12	27
13	27
14	27
15	27
16	27
17	27
18	27
19	27
20	27
21	27
22	27
23	27
24	27
25	27
26	27
27	26
28	26
29	26
30	27

	Dry (%)	Comfortable (%)
1	97	3
2	97	3
3	97	3
4	97	3
5	97	3
6	97	3
7	97	3
8	97	3
9	97	3
10	97	3
11	97	3
12	98	2
13	98	2
14	98	2
15	98	2
16	99	1
17	99	1
18	99	1
19	99	1
20	99	1
21	100	0
22	100	0
23	100	0
24	100	0
25	100	0
26	100	0
27	100	0
28	100	0
29	100	0
30	100	0