Mississauga weather in October

In October, Mississauga sees average daytime highs of 14°C and overnight lows near 7°C, with 83 mm of precipitation across 11.1 wet days and about 10.8 hours of daylight. It is the 6th-warmest and 2nd-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 11°C by the end. The sky is clear or mostly clear about 23% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 30 min at the start of October to 10 h 06 min by month's end. Set against the rest of the year, October is Mississauga's 6th-clearest and 5th-windiest month. For the whole year in context, see Mississauga's year-round climate.

Daytime high
14°
6th warmest
Overnight low
7th coldest
Precipitation
83 mm
11.1 wet days
Daylight
10 h 48 min
6:40 AM – 5:27 PM
Cloud cover
65%
6th clearest
Wind
15 km/h
5th windiest
Solar energy
2.66 kWh/m²
Travel score
4.0
out of 10

Mississauga is city in Ontario, Canada.

Air quality
Good
PM2.5 7 µg/m³ · 2019
Founded
1968

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 17°C in the first days to 11°C by the end.

A typical October day in Mississauga reaches about 14°C in the afternoon and slips back to 7°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 9°C and 20°C. Set against its neighbours, October runs about 7°C cooler than September and about 7°C warmer than November.

10°20°151015202531
Avg high (°C)Avg low (°C)
11810
21810
31710
41710
51710
6179
7169
8169
9169
10169
11158
12158
13158
14158
15148
16147
17147
18147
19137
20137
21136
22136
23126
24126
25126
26125
27115
28115
29115
30115
31114

How October really feels in Mississauga

Once humidity and wind are folded in, October 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

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

Mississauga weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-1° / -7°70118.59.10.0
Feb-0° / -7°558.66.610.20.0
Mar / -3°659.64.911.60.2
Apr10° / 8911.3213.22.3
May16° / 8111014.55.0
Jun22° / 14°8211.3015.26.5
Jul25° / 18°7410.1014.96.8
Aug25° / 17°669.4013.87.1
Sep21° / 13°759.2012.36.6
Oct14° / 8311.10.110.84.0
Nov / 7710.22.69.51.0
Dec / -3°7010.56.38.80.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 59%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24753
34654
44654
54654
64654
74654
84654
94654
104456
114456
124456
134357
144258
154258
164159
174060
184060
193961
203862
213862
223664
233664
243664
253664
263664
273664
283565
293565
303565
313565

Chance of precipitation in October

Any precipitationSnow

Mississauga gets around 83 mm of rain and snow over 11.1 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 36% and peaks near 38% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1380
2380
3380
4370
5370
6370
7360
8360
9350
10350
11350
12340
13340
14350
15350
16350
17360
18360
19360
20371
21371
22371
23371
24361
25361
26361
27351
28351
29342
30342
31332

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 89% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1751582
2771571
3791461
4791461
5801451
6811351
7821341
8831241
9841231
10851131
11861031
12871021
1388921
1490820
1591810
1692710
1792710
1893610
1993610
2095500
2195500
2296400
2396400
2497300
2597300
2697300
2798200
2898200
2998200
3098200
3198200

Wind in October

Winds average 15 km/h in October.

Across October, daily wind ranges from about 14 km/h on the calmest days to 16 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
715light breeze
815light breeze
915light breeze
1015light breeze
1115light breeze
1215light breeze
1315light breeze
1415light breeze
1515light breeze
1615light breeze
1715light breeze
1815light breeze
1915light breeze
2016light breeze
2116light breeze
2216light breeze
2316light breeze
2416light breeze
2516light breeze
2616light breeze
2716light breeze
2816light breeze
2916light breeze
3016light breeze
3116light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 84 minutes over October. Sunrise moves from 6:22 AM to 7:00 AM, and sunset from 5:53 PM to 5:05 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:225:53
211.56:235:52
311.46:245:50
411.46:255:48
511.36:275:46
611.36:285:44
711.26:295:43
811.26:305:41
911.16:325:39
1011.16:335:37
1111.06:345:35
1211.06:355:34
1310.96:375:32
1410.96:385:30
1510.86:395:29
1610.86:405:27
1710.76:425:25
1810.76:435:24
1910.66:445:22
2010.66:455:21
2110.56:475:19
2210.56:485:17
2310.46:495:16
2410.46:515:14
2510.36:525:13
2610.36:535:11
2710.36:555:10
2810.26:565:09
2910.26:575:07
3010.16:595:06
3110.17:005:05

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.66 kWh/m².

For context, solar energy here swings from a low near 1.3 kWh/m² to a high of 6.25 kWh/m² in June across the year — October's 2.66 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.3Moderate
33.3Moderate
43.3Moderate
53.2Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.0Moderate
103.0Moderate
112.9Moderate
122.9Moderate
132.8Moderate
142.8Moderate
152.7Moderate
162.7Moderate
172.6Moderate
182.5Moderate
192.5Moderate
202.5Moderate
212.4Moderate
222.4Moderate
232.3Moderate
242.3Moderate
252.3Moderate
262.2Moderate
272.2Moderate
282.2Moderate
292.1Moderate
302.1Moderate
312.1Moderate
Planning a trip in October

Is October a good time to visit Mississauga?

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

4.0
Sightseeing
6th-best month of the year
0.4
Beach & pool
6th-best month of the year

October is a reasonable time to visit Mississauga for sightseeing.

What to pack for Mississauga in October

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

In October, Mississauga sees daytime highs around 14°C and nights near 7°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Mississauga in October

The nearest coast averages about 13°C in October — 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 21°C and coldest in February near 3°C.

It's comfortable for a long swim from Jul 22 to Sep 1 — about 1.4 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May8Bracing
Jun15Cool
Jul20Cool
Aug21Refreshing
Sep19Cool
Oct13Bracing
Nov8Bracing
Dec5Bracing

UV index in Mississauga in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mississauga 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 Mississauga?

Mississauga sits at 43.6°N, 79.7°W, 159 m above sea level, in Canada. The nearest listed city is Etobicoke, 10 km away.

Topography around Mississauga

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

Within 3 km, the terrain around Mississauga has only modest variations in elevation — a maximum elevation change of 102 m around an average of 151 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 191 m; within 80 km, significant variations in elevation — a maximum elevation change of 459 m.

The land around Mississauga is covered by artificial surfaces (62%) and trees (28%) within 3 km, artificial surfaces (40%) within 16 km, and cropland (29%), trees (26%) and water (22%) within 80 km.

3 km
102 m
16 km
191 m
80 km
459 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Etobicoke 10 km · Eringate-Centennial-West Deane 11 km · Islington-City Centre West 11 km · Mimico 12 km · Stonegate-Queensway 14 km · Willowridge-Martingrove-Richview 14 km · Oakville 14 km · Brampton 15 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 Mississauga (43.5789°, -79.6583°, elevation 159 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).