Monthly weather averages & travel planning

North America › 🇨🇦 Canada › Vancouver
Updated: March 2026
September is a good time to visit Vancouver (6/10). With 10 daily sunshine hours and only 10 rain days, this month delivers genuinely reliable outdoor conditions, ranking it 6th sunniest of the year in Vancouver. Culture-focused travellers and those who prefer lighter crowds will find September a practical choice, with prices running lower than peak July without sacrificing all the good weather. October offers a similar profile at lower hotel rates if dates are flexible. The main practical note: Vancouver'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.
Visiting Vancouver in September means mild conditions with highs around 20°C. Factor in 10 potential rainy days and 65% average humidity when planning your daily activities.
20°C
68°F
Avg High
13°C
55°F
Avg Low
10 days
117 mm total
Rain Days
10h
per day avg
Sunshine
65%
Moderate
Humidity
The 7°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. Winds are calm at an average 10 km/h, so wind-chill is not a factor in planning your clothing. In Fahrenheit: 68°F average high, 55°F overnight low. Data sourced from Open-Meteo ERA5 climate reanalysis (1991–2020 normals).
Packing for Vancouver in September means dressing for 20°C days and 13°C evenings. A light cotton tee with a casual overshirt works well at 20°C, the overshirt doubles as a layer for air-conditioned venues. Evening temperatures settle at 13°C, a modest 7°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 Vancouver. The day-to-evening temperature shift rewards packing a versatile mid-layer you can add or remove as conditions change.
September has no major festivals or public holidays in Vancouver, 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 20°C average highs and 10 rainy days
September brings the first meaningful shift toward cooler conditions in Vancouver, as the sun angle drops and day length shortens. Temperatures averaging 20°C by day and 13°C overnight are still comfortable by most standards, but the trend is clearly downward. At 49 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. Conditions remain excellent for outdoor activity, and crowds thin compared to the summer peak. 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.
Vancouver in September
September ranks 6th sunniest of the year in Vancouver, with an average 10 daily sunshine hours. The driest months are July, August, and September. July is the hottest month (23°C avg high); January is the coolest (6°C). From here, temperatures fall 6°C into October. Compared to last month (August: 23°C high, 7 rain days), September is cooler and wetter. September sits in the middle of the annual sunshine ranking for Vancouver, offering a reasonable balance of good weather and manageable crowds.
| Month | High | Low | Rain Days | Sun | Details |
|---|---|---|---|---|---|
| January | 6°C | 2°C | 19 | 4h | View |
| February | 8°C | 2°C | 16 | 6h | View |
| March | 10°C | 3°C | 19 | 7h | View |
| April | 13°C | 5°C | 17 | 10h | View |
| May | 17°C | 9°C | 12 | 11h | View |
| June | 19°C | 12°C | 11 | 12h | View |
| July | 23°C | 15°C | 7 | 13h | View |
| August | 23°C | 15°C | 7 | 12h | View |
| September | 20°C | 13°C | 10 | 10h | View |
| October | 14°C | 8°C | 16 | 7h | View |
| November | 9°C | 4°C | 20 | 4h | View |
| December | 6°C | 2°C | 19 | 4h | View |
January
19 rain days, 4h sun
February
16 rain days, 6h sun
March
19 rain days, 7h sun
April
17 rain days, 10h sun
May
12 rain days, 11h sun
June
11 rain days, 12h sun
July
7 rain days, 13h sun
August
7 rain days, 12h sun
September
10 rain days, 10h sun
October
16 rain days, 7h sun
November
20 rain days, 4h sun
December
19 rain days, 4h sun
Data Sources for Vancouver
Climate normals represent 30-year averages (1991-2020). Individual years may vary.