Photo: U.S. Coast Guard · Public domainComox sits near the top of Canadian towns for mild winters
High summer brings afternoon highs near 23.1°C. Its July afternoons stay fresher than in 88% of Canadian towns. The wettest month is December; the driest is July. Expect about 46 frosty starts a year, days when the air falls to freezing.
Measured at Comox, 4.4 km north-east: ECCC’s normals for 1991–2020.
A year in Comox at a glance
Each month’s typical high and low, in °C.
What stands out about Comox’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in British Columbia beside it.
What a year in Comox feels like
Typical highs and lows by season and by month, from ECCC’s 1991–2020 normals.
About 46 frosts and 80 warm days a year
The frost season runs November to March, peaking in December at about 11 nights.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,152 mm a year
Some 131 days a year see 1 mm of rain or snow or more.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 51 cm of snow a year
Expect snow from November to March, with about 17 cm in December, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Comox
87% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. By this count, homes here need less heating than 94% of Canadian towns.
Living with Comox’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
The frost-free stretch runs from about 1 April to about 6 November, some 218 days in a normal year.
The comfortable months for a day outside, highs of 17–27°C and nights of 8°C or more: May, Jun, Jul, Aug and Sep.
Parks & trails →Humid summer days, the humidex above 30, number about 8 a year.
For blizzards, floods and wildfire, turn to Comox’s hazards page.
Flood & hazards →ECCC’s normals location: Comox
Comox is one of the 450 places where ECCC publishes 1991–2020 normals.
| Distance from the town | 4.4 km north-east |
| Station altitude | 26 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | Yes |
| Coldest reading, 1991–2020 | −10.8°C |
| Hottest reading, 1991–2020 | 35.2°C |
| Average wind | 12.5 km/h on average, most often from the south-east |
| Next-nearest location | Campbell River, 39 km |
How Comox compares
Against the 2,611 Canadian towns and neighbourhoods of 2,500 or more, each read from its own normals location; the dots are the other locations those towns use in British Columbia.
Nearby towns’ climate
The nearest places on a normals location of their own: those that share Comox’s would only repeat its figures. The nearest place to Comox with figures is 32 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Comox | 23.1°C | 1.5°C | 1,152 mm |
| Electoral Area D (Oyster Bay - Buttle Lake), Strathcona 32 km · Campbell River | 23.5°C about the same | −0.5°C 2.0°C colder | 1,482 mm |
Comox weather by month
Month by month, 1991–2020: the usual high, low and mean, the rain and snow, and the snowfall.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | 6.3°C | 1.5°C | 3.9°C | 177 mm | 12 cm |
| February | 7.2°C | 1.2°C | 4.2°C | 112 mm | 9 cm |
| March | 9.5°C | 2.6°C | 6.1°C | 108 mm | 7 cm |
| April | 12.9°C | 5.0°C | 9.0°C | 64 mm | 0 cm |
| May | 17.2°C | 8.6°C | 12.9°C | 40 mm | 0 cm |
| June | 19.9°C | 11.5°C | 15.7°C | 42 mm | 0 cm |
| July | 23.1°C | 13.7°C | 18.5°C | 24 mm | 0 cm |
| August | 23.0°C | 13.5°C | 18.3°C | 31 mm | 0 cm |
| September | 19.1°C | 10.5°C | 14.8°C | 47 mm | 0 cm |
| October | 12.9°C | 6.3°C | 9.6°C | 125 mm | under 1 cm |
| November | 8.7°C | 3.1°C | 5.9°C | 189 mm | 6 cm |
| December | 6.2°C | 1.3°C | 3.7°C | 194 mm | 17 cm |
| Year | 13.8°C | 6.6°C | 10.2°C | 1,152 mm | 51 cm |
The month with the widest range: June, 3.5°C to 33.8°C
Bars run from each month’s record low to its record high over 1991–2020; February is the month whose average wanders most from year to year (±1.5°C around 4.2°C), October the one that wanders least (±0.8°C).
Where Comox’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the 1991–2020 Canadian Climate Normals at Comox, the closest ECCC location with twelve months of temperature normals.
- Comparisons: a pool of Canadian towns and neighbourhoods of 2,500 or more, read alike; whole cities and reserves stay out of it.
- Not on this page: hours of sunshine, missing from the 1991–2020 normals, and a height correction: the town has no elevation on file.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Comox’s climate
How warm does Comox get in summer?
In July, the warmest month, the typical high is 23.1°C.
How cold does Comox get in winter?
Overnight lows average 1.2°C in February, the coldest month.
How much rain and snow does Comox get?
Precipitation totals 1,152 mm a year, with December the wettest month (194 mm) and July the driest (24 mm).
How long does snow stay on the ground?
About 10 days a year count as snow-covered, with 1 cm or more.
Are these figures for Comox itself?
They are: the normals station that gives them stands in Comox.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Comox →
Adapted from Statistics Canada (Census of Population 2021, population estimates 2025, 2021 census boundaries) under the Statistics Canada Open Licence; this does not constitute an endorsement by Statistics Canada. Neighbourhood names in some cities © OpenStreetMap contributors (ODbL).