Monthly weather averages & travel planning

North America › 🇨🇦 Canada › Toronto
Updated: March 2026
October is a fair time to visit Toronto (5/10). With 7 daily sunshine hours and only 10 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 9th sunniest of the year in Toronto. Culture-focused travellers and those who prefer lighter crowds will find October a practical choice, with prices running lower than peak July without sacrificing all the good weather. November offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Toronto's popular sites are busiest between 10am and 3pm regardless of season. Arriving at opening time or after 4pm makes a significant difference to the experience. Planning tips: accommodation is generally available without long lead times, and flight prices are typically lower than peak season. Flexible travellers will find the best deals by booking 2-4 weeks ahead. Mid-week arrivals consistently unlock lower hotel rates than weekend check-ins.
Planning a trip to Toronto in October? Days warm to 15°C on average while evenings hold at 9°C, giving you a clear sense of what to pack. The month delivers roughly 7 hours of sunshine per day and 75mm of rainfall spread across 10 wet days, so there is plenty of fair weather to work with.
15°C
59°F
Avg High
9°C
48°F
Avg Low
10 days
75 mm total
Rain Days
7h
per day avg
Sunshine
65%
Moderate
Humidity
The 6°C day-night temperature range is typical for continental climates: a light jacket in the morning that you shed by midday and need again after sunset. Humidity averages 65%, which is comfortable for most visitors. On warmer days, lighter fabrics help with the mild stickiness in the afternoon. UV index averages 6 this month, classed as moderate. Sunscreen is a sensible precaution for extended outdoor time, particularly at midday. Wind averages 21 km/h, light enough to be refreshing on warm days but noticeable in open coastal areas or elevated viewpoints. In Fahrenheit: 59°F average high, 48°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Toronto in October means dressing for 15°C days and 9°C evenings. A mid-weight jacket over a sweater handles 15°C daytime temperatures; the combination stays comfortable all day without overheating. Evening temperatures settle at 9°C, a modest 6°C drop that a light cardigan or denim jacket covers. Comfortable walking trainers are the versatile choice for both outdoor sightseeing and indoor venues. A compact foldable umbrella weighs almost nothing and earns its keep across 10 potential rainy days.
Local tip: Layers are more practical than a single heavy garment in Toronto. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
October has no major festivals or public holidays in Toronto, which is one of its practical advantages for independent travellers. Attractions run at lower capacity than during peak event periods, queues are shorter, and accommodation is easier to find without needing to book many months in advance. Local restaurants, markets, and transport operate at a relaxed pace, making this an ideal time for visitors who prefer a more authentic, unhurried experience of everyday city life rather than large crowds drawn in by a single major headline event.
Based on 15°C average highs and 10 rainy days
October brings the first meaningful shift toward cooler conditions in Toronto, as the sun angle drops and day length shortens. Temperatures averaging 15°C by day and 9°C overnight are still comfortable by most standards, but the trend is clearly downward. At 44 degrees north latitude, autumn light has a particular quality: lower in the sky and warmer in tone, it gives the city a photogenic quality quite different from summer. Evening temperatures already demand a jacket, but midday hours stay pleasant for sightseeing. Climate data: Open-Meteo ERA5 (1991–2020).
Sunshine Hours
The average number of hours per day with direct sunlight. Calculated from satellite measurements. Days with more than 7 hours of sunshine are ideal for outdoor activities. Under 3 hours means overcast conditions dominate.
UV Index
A scale from 0-11+ measuring ultraviolet radiation intensity. UV 0-2: Minimal risk. UV 3-5: Moderate, wear sunscreen. UV 6-7: High, hat and SPF 30+ essential. UV 8-10: Very High, limit midday exposure. UV 11+: Extreme, seek shade between 10am-4pm.
Rain Days
A rain day is counted when precipitation exceeds 0.1mm. This threshold captures even light drizzle. Unlike total rainfall in mm, rain days tells you how often you might need an umbrella, which is useful for planning outdoor activities.
Humidity
Relative humidity as a percentage. Below 40%: Dry, skin and throat may feel parched. 40-60%: Comfortable, ideal for most people. 60-80%: Sticky, light breathable fabrics recommended. Above 80%: Muggy, heat feels more intense; quick-dry clothing is essential.
Toronto in October
October ranks 9th sunniest of the year in Toronto, with an average 7 daily sunshine hours. The driest months are February, March, and August. July is the hottest month (26°C avg high); January is the coolest (-1°C). From here, temperatures fall 7°C into November. Compared to last month (September: 22°C high, 9 rain days), October is cooler and wetter. October sits in the middle of the annual sunshine ranking for Toronto, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | -1°C | -7°C | 10 | 5h | View |
| February | 0°C | -8°C | 8 | 7h | View |
| March | 4°C | -4°C | 9 | 8h | View |
| April | 10°C | 2°C | 11 | 9h | View |
| May | 17°C | 9°C | 10 | 11h | View |
| June | 22°C | 15°C | 11 | 12h | View |
| July | 26°C | 18°C | 10 | 13h | View |
| August | 25°C | 18°C | 9 | 11h | View |
| September | 22°C | 15°C | 9 | 10h | View |
| October | 15°C | 9°C | 10 | 7h | View |
| November | 8°C | 3°C | 10 | 6h | View |
| December | 3°C | -3°C | 10 | 5h | View |
January
10 rain days, 5h sun
February
8 rain days, 7h sun
March
9 rain days, 8h sun
April
11 rain days, 9h sun
May
10 rain days, 11h sun
June
11 rain days, 12h sun
July
10 rain days, 13h sun
August
9 rain days, 11h sun
September
9 rain days, 10h sun
October
10 rain days, 7h sun
November
10 rain days, 6h sun
December
10 rain days, 5h sun
Data Sources for Toronto
Climate normals represent 30-year averages (1991-2020). Individual years may vary.