British Columbia weather in September
September is one of the best months to visit British Columbia: highs of 18°C (65°F) and about 71 mm (2.8 in) of rain on average. Nights average 13°C (55°F) and cloud cover 58% (NASA POWER, 2001–2025 averages). The sea averages 18°C (64°F). It is the 5th driest month of the year and the 4th warmest. Compared with August, it is cooler and wetter; October brings highs of 13°C (55°F) and 140 mm (5.5 in) of rain.
Figures are long-term averages for Vancouver, the largest city in British Columbia. See below for other places.
Is September a good time to visit British Columbia?
best month Weather score 71/100.
Yes. September is one of the best months for weather in British Columbia.
Does it rain a lot in British Columbia in September?
Some rain is normal: about 71 mm (2.8 in) falls in an average September. It is the 5th driest month of the year.
How warm is British Columbia in September?
Days average 18°C (65°F) and nights 13°C (55°F).
British Columbia weather by month
| Month | High | Low | Rain | Cloud | Sea | Weather |
|---|---|---|---|---|---|---|
| January | 6°C (43°F) | 3°C (37°F) | 194 mm | 81% | 7°C (44°F) | least pleasant |
| February | 7°C (44°F) | 3°C (37°F) | 103 mm | 75% | 7°C (44°F) | least pleasant |
| March | 9°C (48°F) | 4°C (40°F) | 142 mm | 81% | 8°C (46°F) | least pleasant |
| April | 12°C (53°F) | 7°C (44°F) | 87 mm | 78% | 10°C (51°F) | fair |
| May | 16°C (60°F) | 10°C (50°F) | 60 mm | 71% | 13°C (56°F) | fair |
| June | 18°C (65°F) | 12°C (54°F) | 46 mm | 71% | 16°C (61°F) | best |
| July | 22°C (71°F) | 15°C (58°F) | 26 mm | 50% | 19°C (67°F) | best |
| August | 22°C (71°F) | 15°C (59°F) | 33 mm | 50% | 20°C (67°F) | best |
| September | 18°C (65°F) | 13°C (55°F) | 71 mm | 58% | 18°C (64°F) | best |
| October | 13°C (55°F) | 9°C (48°F) | 140 mm | 73% | 13°C (55°F) | fair |
| November | 9°C (47°F) | 5°C (41°F) | 206 mm | 81% | 9°C (49°F) | least pleasant |
| December | 6°C (42°F) | 3°C (37°F) | 177 mm | 81% | 8°C (46°F) | least pleasant |
Sources: 2001–2025 monthly averages from NASA POWER (MERRA-2 reanalysis), sea temperature from Open-Meteo Marine. Page updated . How we rate months
Weather across British Columbia in September
Weather can differ a lot within British Columbia: coasts, hills and mountains each have their own climate.
| Place | High | Low | Rain | Weather |
|---|---|---|---|---|
| Vancouver | 18°C (65°F) | 13°C (55°F) | 71 mm | best |
| Surrey | 18°C (65°F) | 13°C (55°F) | 71 mm | best |
| Victoria | 18°C (64°F) | 12°C (53°F) | 50 mm | best |
| Burnaby | 17°C (62°F) | 9°C (49°F) | 122 mm | best |
| Richmond | 18°C (65°F) | 13°C (55°F) | 71 mm | best |
| Newton | 18°C (65°F) | 13°C (55°F) | 71 mm | best |
| Coquitlam | 16°C (61°F) | 8°C (46°F) | 132 mm | fair |
| Kelowna | 19°C (65°F) | 5°C (41°F) | 33 mm | best |
| Abbotsford | 19°C (67°F) | 11°C (51°F) | 77 mm | best |
| Langley | 19°C (67°F) | 11°C (51°F) | 77 mm | best |
| Saanich | 18°C (64°F) | 12°C (53°F) | 50 mm | best |
| Kamloops | 17°C (63°F) | 4°C (40°F) | 35 mm | best |