Kanata weather in September

In September, Kanata sees average daytime highs of 21°C and overnight lows near 10°C, with 87 mm of rain across 10.1 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 5th-wettest month of the year here.

Highs ease over the month, from about 23°C in the first days to 18°C by the end. The sky is clear or mostly clear about 29% of the time in September, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of September to 11 h 36 min by month's end. Set against the rest of the year, September is Kanata's 2nd-clearest and 9th-windiest month. For the whole year in context, see Kanata's year-round climate.

Daytime high
21°
4th warmest
Overnight low
10°
9th coldest
Rainfall
87 mm
10.1 wet days
Daylight
12 h 18 min
5:49 AM – 6:07 PM
Cloud cover
59%
2nd clearest
Wind
11 km/h
9th windiest
Solar energy
3.88 kWh/m²
Travel score
6.4
out of 10

Kanata is neighbourhood in Ottawa, Ontario, Canada, former municipality.

Founded
1978

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 23°C in the first days to 18°C by the end.

A typical September day in Kanata reaches about 21°C in the afternoon and slips back to 10°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 27°C. Set against its neighbours, September runs about 4°C cooler than August and about 8°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12413
22313
32312
42312
52312
62312
72212
82212
92211
102211
112211
122211
132111
142110
152110
162110
172110
182010
19209
20209
21209
22199
23199
24199
25198
26188
27188
28188
29188
30177

How September really feels in Kanata

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.

Kanata weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-5° / -14°6810.298.90.0
Feb-3° / -13°548.67.910.10.0
Mar / -7°69106.311.60.1
Apr12° / 8911.5313.22.8
May19° / 8311.30.214.65.7
Jun24° / 13°9411.5015.46.5
Jul26° / 15°9411.9015.16.3
Aug25° / 14°8410.7013.96.7
Sep21° / 10°8710.1012.36.4
Oct13° / 9411.50.610.73.4
Nov / -2°78113.69.30.5
Dec-1° / -9°73118.58.60.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 55%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
25050
34951
44951
55050
64951
74951
84951
94852
104852
114753
124852
134852
144753
154654
164654
174654
184654
194555
204555
214555
224456
234456
244258
254060
264060
273862
283862
293862
303664

Chance of precipitation in September

Any precipitation

Kanata gets around 87 mm of rain over 10.1 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 33% and peaks near 37% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
131
231
331
431
532
632
732
833
933
1033
1133
1232
1332
1432
1532
1633
1733
1833
1933
2033
2134
2234
2334
2435
2535
2636
2736
2836
2937
3037

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 65% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1462518111
2482417101
3492416101
450241691
552231591
653231581
755231471
856221471
957221461
1059211361
1159211361
1262201350
1363201250
1464201240
1565191240
1666191140
1767191130
1867191130
1969181030
2070181020
2171171020
227316920
237316920
247515910
257714810
267814710
277913710
288112610
298311600
308410600

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 13 h 06 min at the start of September to 11 h 36 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 90 minutes over September. Sunrise moves from 5:30 AM to 6:06 AM, and sunset from 6:37 PM to 5:40 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:306:37
213.15:316:35
313.05:326:33
413.05:346:31
512.95:356:29
612.95:366:27
712.85:376:25
812.75:396:23
912.75:406:21
1012.65:416:19
1112.65:426:17
1212.55:446:15
1312.55:456:13
1412.45:466:11
1512.45:476:09
1612.35:496:07
1712.35:506:05
1812.25:516:03
1912.15:526:01
2012.15:545:59
2112.05:555:57
2212.05:565:55
2311.95:575:53
2411.95:595:51
2511.86:005:49
2611.86:015:47
2711.76:035:45
2811.76:045:43
2911.66:055:41
3011.66:065:40

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 3.88 kWh/m².

For context, solar energy here swings from a low near 1.21 kWh/m² to a high of 6.01 kWh/m² in June across the year — September's 3.88 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.5Bright
24.5Bright
34.5Bright
44.4Bright
54.4Bright
64.3Bright
74.3Bright
84.2Bright
94.2Bright
104.1Bright
114.1Bright
124.0Bright
134.0Bright
144.0Moderate
153.9Moderate
163.9Moderate
173.8Moderate
183.8Moderate
193.7Moderate
203.7Moderate
213.6Moderate
223.6Moderate
233.5Moderate
243.5Moderate
253.4Moderate
263.4Moderate
273.3Moderate
283.3Moderate
293.2Moderate
303.1Moderate
Planning a trip in September

Is September a good time to visit Kanata?

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

6.4
Sightseeing
3rd-best month of the year
3.7
Beach & pool
4th-best month of the year

September is a reasonable time to visit Kanata for sightseeing.

What to pack for Kanata in September

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

In September, Kanata sees daytime highs around 21°C and nights near 10°C. Worth packing: rain gear. About 10 days see rain.

rain gear

UV index in Kanata in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 5 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Kanata peaks around July 13 at about 8 (very high) — sunscreen and a hat are worth it in the middle of the day. It bottoms out near January 1 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 13UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr4Moderate
May6High
Jun7High
Jul8Very high
Aug5High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low

Air quality in Kanata 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 Kanata is worst in June — around 15 µg/m³ PM2.5 (moderate), about 2.3× the cleanest month (December, 7 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodModerateGoodJun 2015 µg/m³Dec 107 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb11Good
Mar13Moderate
Apr11Good
May13Moderate
Jun15Moderate
Jul14Moderate
Aug13Moderate
Sep10Good
Oct7Good
Nov7Good
Dec7Good
Location & terrain

Where is Kanata?

Kanata sits at 45.3°N, 75.9°W, 93 m above sea level, in Canada. The nearest listed city is Bridlewood, 5.0 km away.

Topography around Kanata

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

Within 3 km, the terrain around Kanata has only modest variations in elevation — a maximum elevation change of 48 m around an average of 104 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 123 m; within 80 km, significant variations in elevation — a maximum elevation change of 519 m.

The land around Kanata is covered by artificial surfaces (39%) and trees (27%) within 3 km, trees (44%) within 16 km, and trees (64%) within 80 km.

3 km
48 m
16 km
123 m
80 km
519 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
September weather nearby: Bridlewood 5.0 km · Stittsville 6.0 km · Aylmer 14 km · Nepean 16 km · Ottawa South 21 km · Ottawa 21 km · Hull 21 km · Centretown 21 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 Kanata (45.3001°, -75.9161°, elevation 93 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).