Brampton weather in September

In September, Brampton sees average daytime highs of 21°C and overnight lows near 11°C, with 72 mm of rain across 9 wet days and about 12.3 hours of daylight. It is the 4th-warmest and 6th-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 33% 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 Brampton's 3rd-clearest and 9th-windiest month. For the whole year in context, see Brampton's year-round climate.

Daytime high
21°
4th warmest
Overnight low
11°
9th coldest
Rainfall
72 mm
9 wet days
Daylight
12 h 18 min
6:05 AM – 6:22 PM
Cloud cover
57%
3rd clearest
Wind
11 km/h
9th windiest
Solar energy
4.13 kWh/m²
Travel score
6.6
out of 10

Brampton is city in Ontario, Canada.

Air quality
Good
PM2.5 7 µg/m³ · 2019
Density
2,461/km²
people per km²
Founded
1853

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 Brampton reaches about 21°C in the afternoon and slips back to 11°C overnight — a 10°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 7°C warmer than October.

10°20°30°151015202530
Avg high (°C)Avg low (°C)
12414
22413
32413
42313
52313
62313
72313
82312
92212
102212
112212
122212
132211
142211
152111
162111
172111
182110
192110
202010
212010
222010
23209
24199
25199
26199
27199
28188
29188
30188

How September really feels in Brampton

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.

Brampton weather by month

How September compares with the rest of the year at a glance. September is the 4th-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -10°6010.18.19.10.0
Feb-1° / -9°4986.610.20.0
Mar / -4°579.25.111.60.3
Apr12° / 80112.213.22.9
May18° / 7911014.55.7
Jun24° / 13°8511.2015.26.6
Jul26° / 16°7910.4014.96.6
Aug25° / 15°719.5013.87.0
Sep21° / 11°729012.36.6
Oct14° / 7410.60.310.83.9
Nov / -1°679.92.99.50.8
Dec / -5°599.96.78.80.0

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% 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 49%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15545
25545
35545
45545
55545
65545
75446
85446
95347
105347
115347
125248
135149
145149
155149
165149
175050
185050
195050
205050
214951
224951
234852
244753
254753
264753
274555
284555
294555
304555

Chance of precipitation in September

Any precipitation

Brampton gets around 72 mm of rain over 9 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 30% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202530
Rain chance (%)
128
229
329
429
530
630
730
830
930
1030
1130
1229
1329
1429
1528
1628
1728
1828
1928
2028
2128
2229
2330
2431
2532
2633
2734
2835
2935
3036

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 61% of days. Sticky, muggy-or-worse air turns up on roughly 5% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1412720111
2422620111
3442619110
4462518100
5472517100
6492417100
751241690
851241690
954231580
1054231580
1156221570
1257221470
1358221460
1459211460
1561211350
1661211350
1763201340
1863201340
1966191230
2066191230
2168181220
2269181120
2370171120
2473161010
257416910
267515910
277615810
287714810
297913710
307913710

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

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm

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 5:47 AM to 6:21 AM, and sunset from 6:50 PM to 5:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
113.15:476:50
213.05:486:49
313.05:496:47
412.95:516:45
512.95:526:43
612.85:536:41
712.85:546:39
812.75:556:37
912.75:566:36
1012.65:586:34
1112.65:596:32
1212.56:006:30
1312.46:016:28
1412.46:026:26
1512.36:036:24
1612.36:056:22
1712.26:066:20
1812.26:076:18
1912.16:086:17
2012.16:096:15
2112.06:106:13
2212.06:126:11
2311.96:136:09
2411.96:146:07
2511.86:156:05
2611.86:166:03
2711.76:176:01
2811.76:195:59
2911.66:205:58
3011.66:215:56

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 1.31 kWh/m² to a high of 6.29 kWh/m² in June across the year — September's 4.13 kWh/m² falls in the middle.

024151015202530
Solar energy (kWh/m²)Level
14.7Bright
24.7Bright
34.7Bright
44.6Bright
54.6Bright
64.5Bright
74.5Bright
84.4Bright
94.4Bright
104.3Bright
114.3Bright
124.3Bright
134.2Bright
144.2Bright
154.2Bright
164.1Bright
174.1Bright
184.0Bright
194.0Moderate
203.9Moderate
213.9Moderate
223.8Moderate
233.8Moderate
243.7Moderate
253.7Moderate
263.6Moderate
273.6Moderate
283.5Moderate
293.5Moderate
303.4Moderate
Planning a trip in September

Is September a good time to visit Brampton?

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

6.6
Sightseeing
2nd-best month of the year
4.1
Beach & pool
4th-best month of the year

September is a reasonable time to visit Brampton for sightseeing.

What to pack for Brampton in September

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

In September, Brampton sees daytime highs around 21°C and nights near 11°C. Worth packing: rain gear. About 9 days see rain.

rain gear

Sea temperature near Brampton in September

The nearest coast averages about 19°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 32 km away) is warmest in August at about 21°C and coldest in February near 3°C.

It's comfortable for a long swim from Jul 20 to Sep 2 — about 1.5 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May7Bracing
Jun15Bracing
Jul20Cool
Aug21Refreshing
Sep19Cool
Oct13Bracing
Nov8Bracing
Dec5Bracing

UV index in Brampton 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 Brampton peaks around June 21 at about 8 (very high) — sunscreen, a hat and midday shade are essential. It bottoms out near December 22 at about 1 (low).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 8 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecLowModerateHighVery highHighModerateLowJun 21UV 8Dec 22UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul8Very high
Aug6High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Brampton?

Brampton sits at 43.7°N, 79.8°W, 221 m above sea level, in Canada. The nearest listed city is Georgetown, 13 km away.

Topography around Brampton

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

Within 3 km, the terrain around Brampton has only modest variations in elevation — a maximum elevation change of 43 m around an average of 222 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 272 m; within 80 km, significant variations in elevation — a maximum elevation change of 468 m.

The land around Brampton is covered by artificial surfaces (64%) and trees (23%) within 3 km, artificial surfaces (40%) and cropland (23%) within 16 km, and cropland (31%), trees (28%) and water (20%) within 80 km.

3 km
43 m
16 km
272 m
80 km
468 m
treesgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Georgetown 13 km · Halton Hills 14 km · West Humber-Clairville 14 km · Mississauga 15 km · Eringate-Centennial-West Deane 15 km · Mount Olive-Silverstone-Jamestown 16 km · Etobicoke 16 km · Willowridge-Martingrove-Richview 17 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 Brampton (43.6834°, -79.7663°, elevation 221 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).