Greater Sudbury weather in October

In October, Greater Sudbury sees average daytime highs of 11°C and overnight lows near 2°C, with 94 mm of precipitation across 12.7 wet days and about 10.7 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 14°C in the first days to 7°C by the end. The sky is clear or mostly clear about 17% 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 9 h 54 min by month's end. Set against the rest of the year, October is Greater Sudbury's 9th-clearest and 2nd-windiest month. For the whole year in context, see Greater Sudbury's year-round climate.

Daytime high
11°
6th warmest
Overnight low
7th coldest
Precipitation
94 mm
12.7 wet days
Daylight
10 h 36 min
6:50 AM – 5:28 PM
Cloud cover
72%
9th clearest
Wind
12 km/h
2nd windiest
Solar energy
2.34 kWh/m²
Travel score
2.3
out of 10

Greater Sudbury is city and unitary authority in Ontario, Canada.

Density
52/km²
people per km²
Founded
1893

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 14°C in the first days to 7°C by the end.

A typical October day in Greater Sudbury reaches about 11°C in the afternoon and slips back to 2°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 4°C and 17°C. Set against its neighbours, October runs about 8°C cooler than September and about 8°C warmer than November.

-10°10°20°151015202531
Avg high (°C)Avg low (°C)
1155
2155
3145
4145
5144
6144
7134
8134
9134
10123
11123
12123
13123
14113
15113
16112
17102
18102
19102
2092
2191
2291
2391
2481
2581
2680
2780
2870
2970
307-1
317-1

How October really feels in Greater Sudbury

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 21 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
21
wind chill below the day's low

The story in October is cold — wind chill drags the overnight "feels like" below the raw low.

Greater Sudbury weather by month

How October compares with the rest of the year at a glance. October is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-7° / -17°5310.110.98.80.0
Feb-5° / -16°417.67.9100.0
Mar / -10°507.86.111.60.0
Apr10° / -1°709.83.913.32.1
May17° / 7210.60.414.85.4
Jun23° / 11°8110.8015.56.5
Jul25° / 14°8710.7015.26.8
Aug23° / 13°9011.20146.7
Sep19° / 9211012.45.7
Oct11° / 9412.70.910.72.3
Nov / -5°73116.39.20.1
Dec-4° / -12°59119.98.50.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 12% of October, with mostly cloudy or overcast conditions the remaining 71%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
13862
23862
33862
43862
53862
63763
73763
83763
93664
103565
113466
123268
133268
143070
152971
162773
172674
182575
192377
202377
212377
222278
232278
242278
252278
262278
272278
282278
292278
302476
312476

Chance of precipitation in October

Any precipitationSnow

Greater Sudbury gets around 94 mm of rain and snow over 12.7 wet days in October, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable precipitation averages around 41% and peaks near 43% on the wettest days, and about 1 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1400
2400
3400
4400
5401
6411
7411
8411
9421
10421
11422
12432
13432
14432
15433
16433
17433
18433
19434
20424
21424
22425
23415
24416
25416
26407
27408
28408
29409
303910
313910

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 96% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19082
29082
39172
49271
59361
69361
79361
89451
99451
109451
119541
129640
139640
149730
159730
169730
179820
189820
199820
209820
219820
229820
239910
249910
259910
269910
279910
289910
299910
309910
3110000

Wind in October

Winds average 12 km/h in October.

Across October, daily wind ranges from about 12 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
312light breeze
412light breeze
512light breeze
612light breeze
712light breeze
812light breeze
912light breeze
1012light breeze
1112light breeze
1212light breeze
1312light breeze
1412light breeze
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2112light breeze
2212light breeze
2312light breeze
2412light breeze
2512light breeze
2612light breeze
2712light breeze
2812light breeze
2912light breeze
3012light breeze
3112light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 30 min at the start of October to 9 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 96 minutes over October. Sunrise moves from 6:29 AM to 7:11 AM, and sunset from 5:57 PM to 5:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:295:57
211.46:305:55
311.46:315:53
411.36:335:51
511.36:345:49
611.26:365:47
711.16:375:45
811.16:385:43
911.06:405:41
1011.06:415:40
1110.96:435:38
1210.96:445:36
1310.86:455:34
1410.86:475:32
1510.76:485:30
1610.66:505:28
1710.66:515:27
1810.56:525:25
1910.56:545:23
2010.46:555:21
2110.46:575:20
2210.36:585:18
2310.37:005:16
2410.27:015:14
2510.27:035:13
2610.17:045:11
2710.17:065:10
2810.07:075:08
2910.07:095:07
309.97:105:05
319.97:115:04

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.34 kWh/m².

For context, solar energy here swings from a low near 1.18 kWh/m² to a high of 6.11 kWh/m² in June across the year — October's 2.34 kWh/m² falls in the middle.

0123151015202531
Solar energy (kWh/m²)Level
13.0Moderate
23.0Moderate
32.9Moderate
42.9Moderate
52.8Moderate
62.8Moderate
72.7Moderate
82.7Moderate
92.6Moderate
102.6Moderate
112.5Moderate
122.5Moderate
132.5Moderate
142.4Moderate
152.4Moderate
162.3Moderate
172.3Moderate
182.2Moderate
192.2Moderate
202.1Moderate
212.1Moderate
222.0Moderate
232.0Moderate
242.0Dim
251.9Dim
261.9Dim
271.9Dim
281.9Dim
291.8Dim
301.8Dim
311.8Dim
Planning a trip in October

Is October a good time to visit Greater Sudbury?

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

2.3
Sightseeing
6th-best month of the year
0.0
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Greater Sudbury.

What to pack for Greater Sudbury in October

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

In October, Greater Sudbury sees daytime highs around 11°C and nights near 2°C. Pack a warm layer. Worth having: rain gear. About 13 days see rain.

a warm layerrain gear

Sea temperature near Greater Sudbury in October

The nearest coast averages about 12°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 69 km away) is warmest in August at about 19°C and coldest in March near 1°C.

The water stays below 20°C all year — cool enough that most swimmers want a wetsuit.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshing
Sea temperature (°C)Comfort
Jan2Bracing
Feb1Bracing
Mar1Bracing
Apr2Bracing
May5Bracing
Jun11Bracing
Jul18Cool
Aug19Cool
Sep17Cool
Oct12Bracing
Nov8Bracing
Dec4Bracing

UV index in Greater Sudbury in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 3. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Greater Sudbury peaks around June 20 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 highHighModerateLowJun 20UV 8Jan 1UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar3Moderate
Apr5Moderate
May6High
Jun8Very high
Jul7Very high
Aug6High
Sep5Moderate
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Greater Sudbury?

Greater Sudbury sits at 46.5°N, 81.0°W, 266 m above sea level, in Canada. The nearest listed city is Valley East, 17 km away.

Topography around Greater Sudbury

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

Within 3 km, the terrain around Greater Sudbury has only modest variations in elevation — a maximum elevation change of 91 m around an average of 274 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 219 m; within 80 km, significant variations in elevation — a maximum elevation change of 411 m.

The land around Greater Sudbury is covered by trees (43%) and artificial surfaces (33%) within 3 km, trees (65%) within 16 km, and trees (82%) within 80 km.

3 km
91 m
16 km
219 m
80 km
411 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetland
October weather nearby: Valley East 17 km · North Bay 118 km · Huntsville 188 km · Bracebridge 208 km · Midland 212 km · Owen Sound 214 km · Timmins 221 km · Collingwood 231 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 Greater Sudbury (46.49°, -80.99°, elevation 266 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).