Oshawa weather in October

In October, Oshawa sees average daytime highs of 14°C and overnight lows near 5°C, with 83 mm of precipitation across 11.4 wet days and about 10.8 hours of daylight. It is the 6th-warmest and 4th-wettest month of the year here.

Highs ease over the month, from about 17°C in the first days to 10°C by the end. The sky is clear or mostly clear about 22% 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 Oshawa's 6th-clearest and 7th-windiest month. For the whole year in context, see Oshawa's year-round climate.

Daytime high
14°
6th warmest
Overnight low
7th coldest
Precipitation
83 mm
11.4 wet days
Daylight
10 h 48 min
6:38 AM – 5:23 PM
Cloud cover
66%
6th clearest
Wind
14 km/h
7th windiest
Solar energy
2.69 kWh/m²
Travel score
3.8
out of 10

Oshawa is city in Durham Region, Ontario, Canada.

Air quality
Good
PM2.5 6 µg/m³ · 2019
Density
1,204/km²
people per km²
Founded
1850

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 10°C by the end.

A typical October day in Oshawa reaches about 14°C in the afternoon and slips back to 5°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 8°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)
1178
2178
3178
4178
5168
6167
7167
8167
9157
10157
11156
12156
13146
14146
15146
16145
17135
18135
19135
20135
21125
22124
23124
24124
25114
26114
27113
28113
29103
30103
31103

How October really feels in Oshawa

Once humidity and wind are folded in, October averages 0 days that feel above 32°C and 5 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
5
wind chill below the day's low

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

Oshawa weather by month

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

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan-2° / -10°6510.78.89.10.0
Feb-1° / -10°518.26.710.20.0
Mar / -5°6010.45.511.60.2
Apr11° / 8311.3213.22.8
May18° / 7611014.55.6
Jun23° / 14°8911015.26.6
Jul26° / 16°8410.5014.96.6
Aug25° / 15°8010.1013.86.9
Sep21° / 11°809.1012.36.6
Oct14° / 8311.40.210.83.8
Nov / -0°7310.22.79.50.8
Dec / -6°6710.66.88.80.0

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 22% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 16% of October, with mostly cloudy or overcast conditions the remaining 62%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
14753
24654
34654
44555
54555
64555
74456
84357
94357
104258
114159
124060
133961
143862
153862
163664
173565
183565
193367
203268
213268
223268
233268
243169
253169
263169
273268
283268
293268
303466
313466

Chance of precipitation in October

Any precipitationSnow

Oshawa gets around 83 mm of rain and snow over 11.4 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 37% and peaks near 39% on the wettest days, and about 0 day brings snow.

0%10%20%30%40%50%151015202531
Rain chance (%)Snow chance (%)
1360
2360
3360
4350
5350
6350
7350
8350
9360
10360
11360
12360
13360
14360
15370
16370
17380
18381
19391
20391
21391
22391
23391
24381
25382
26382
27372
28372
29362
30362
31352

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1801361
2811261
3821251
4831151
5841141
6851041
7861031
8871030
988930
1089920
1190820
1290820
1391720
1492710
1593610
1693610
1794510
1894510
1994510
2096400
2196400
2296400
2397300
2497300
2597300
2698200
2798200
2898200
2999100
3099100
3199100

Wind in October

Winds average 14 km/h in October.

Across October, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2214light breeze
2314light breeze
2414light breeze
2514light breeze
2614light breeze
2714light breeze
2814light breeze
2914light breeze
3014light breeze
3114light 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 6:19 AM to 6:57 AM, and sunset from 5:50 PM to 5:01 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.56:195:50
211.56:205:48
311.46:215:46
411.46:225:44
511.36:245:43
611.36:255:41
711.26:265:39
811.26:275:37
911.16:295:35
1011.16:305:34
1111.06:315:32
1211.06:325:30
1310.96:345:28
1410.96:355:27
1510.86:365:25
1610.86:385:23
1710.76:395:22
1810.76:405:20
1910.66:415:18
2010.66:435:17
2110.56:445:15
2210.56:455:14
2310.46:475:12
2410.46:485:11
2510.36:495:09
2610.36:515:08
2710.26:525:06
2810.26:535:05
2910.16:555:03
3010.16:565:02
3110.16:575:01

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 2.69 kWh/m².

For context, solar energy here swings from a low near 1.33 kWh/m² to a high of 6.43 kWh/m² in June across the year — October's 2.69 kWh/m² falls in the middle.

01234151015202531
Solar energy (kWh/m²)Level
13.4Moderate
23.4Moderate
33.3Moderate
43.3Moderate
53.3Moderate
63.2Moderate
73.1Moderate
83.1Moderate
93.0Moderate
103.0Moderate
112.9Moderate
122.9Moderate
132.8Moderate
142.8Moderate
152.7Moderate
162.7Moderate
172.6Moderate
182.6Moderate
192.5Moderate
202.5Moderate
212.4Moderate
222.4Moderate
232.4Moderate
242.3Moderate
252.3Moderate
262.2Moderate
272.2Moderate
282.2Moderate
292.2Moderate
302.1Moderate
312.1Moderate
Planning a trip in October

Is October a good time to visit Oshawa?

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

3.8
Sightseeing
6th-best month of the year
0.3
Beach & pool
6th-best month of the year

October is a weaker month for outdoor sightseeing in Oshawa.

What to pack for Oshawa in October

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

In October, Oshawa sees daytime highs around 14°C and nights near 5°C. Worth packing: a warm layer and rain gear. About 11 days see rain.

a warm layerrain gear

Sea temperature near Oshawa 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 offshore is warmest in August at about 21°C and coldest in March near 3°C.

It's comfortable for a long swim from Jul 27 to Sep 2 — about 1.2 months when the water holds above 20°C.

0°10°20°JanFebMarAprMayJunJulAugSepOctNovDecbracingcoolrefreshingwarm
Sea temperature (°C)Comfort
Jan4Bracing
Feb3Bracing
Mar3Bracing
Apr4Bracing
May7Bracing
Jun14Bracing
Jul19Cool
Aug21Refreshing
Sep19Cool
Oct13Bracing
Nov8Bracing
Dec5Bracing

UV index in Oshawa 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 Oshawa 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 December 21 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 8Dec 21UV 1
UV index (midday)Level
Jan1Low
Feb2Low
Mar4Moderate
Apr5High
May6High
Jun8Very high
Jul7Very high
Aug6High
Sep5High
Oct3Moderate
Nov2Low
Dec1Low
Location & terrain

Where is Oshawa?

Oshawa sits at 43.9°N, 78.8°W, 105 m above sea level, in Canada. The nearest listed city is Whitby, 7.0 km away.

Topography around Oshawa

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

Within 3 km, the terrain around Oshawa has only modest variations in elevation — a maximum elevation change of 85 m around an average of 111 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 346 m; within 80 km, significant variations in elevation — a maximum elevation change of 394 m.

The land around Oshawa is covered by artificial surfaces (52%) and trees (35%) within 3 km, water (31%) and trees (22%) within 16 km, and water (42%) and trees (24%) within 80 km.

3 km
85 m
16 km
346 m
80 km
394 m
treesgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Whitby 7.0 km · Brooklin 11 km · Bowmanville 13 km · Ajax 16 km · Pickering 23 km · Rouge 28 km · West Hill 30 km · Uxbridge 31 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 Oshawa (43.9001°, -78.8496°, elevation 105 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).