Photo: Harfang · CC BY-SA 3.0Baie-Comeau has some of the coolest summers among Canadian towns
The coldest hours of a January night bottom out at −18.8°C on average. A year here swings 40°C from midwinter lows to midsummer highs. Frosty nights outnumber those of 88% of Canadian towns. Plan for rain or snow on about 124 days a year, the days with 1 mm or more.
1991–2020 normals from ECCC’s Baie-Comeau location, 8.9 km south.
A year in Baie-Comeau at a glance
Each month’s typical high and low, in °C.
What stands out about Baie-Comeau’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Baie-Comeau feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
About 194 frosts and 53 warm days a year
Frost comes from September to May; in January almost every night freezes. Deep cold, under −20°C, comes on about 38 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 966 mm of rain and snow a year
July brings the most rain and snow; February, the least.
Rain and snow by month
Millimetres
Snowfall: about 323 cm in a normal year
Expect snow from October to May, with about 72 cm in January, the snowiest month.
Snowfall by month
Centimetres
Snowfall: Mont-Joli, 68 km away (Baie-Comeau records no complete year of it).
Heating a home in Baie-Comeau
85% of a year’s heating need falls between October and April. Months averaging under 10°C: October to May.
Think of it as a year’s worth of daily shortfalls below 18°C, added up. By this count, homes here need more heating than 96% of Canadian towns.
Living with Baie-Comeau’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
About 114 days a year pass without frost, from an average last frost of 29 May to a first of 21 September.
For long days outdoors, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →On some 69 days a year the wind chill drops past −20; mitts and a scarf earn their place.
Summer brings about 4 days when the humidex passes 30.
For blizzards, floods and wildfire, turn to Baie-Comeau’s hazards page.
Flood & hazards →ECCC’s normals location: Baie-Comeau
Baie-Comeau is a composite: ECCC joins 2 stations’ readings to make its 1991–2020 normals.
| Distance from the town | 8.9 km south |
| Station altitude | 22 m |
| Completeness | meets the WMO “3 and 5” rule |
| WMO standard normals | No |
| Snowfall from | Mont-Joli, 68 km |
| Coldest reading, 1991–2020 | −40.1°C |
| Hottest reading, 1991–2020 | 32.0°C |
| Average wind | 14.7 km/h on average, most often from the west |
| Next-nearest location | Mont-Joli, 68 km |
How Baie-Comeau 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 Quebec.
Nearby towns’ climate
Places around Baie-Comeau whose figures come from another normals location. Distances here run 60–72 km: that is how far the nearest places with figures are from Baie-Comeau.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Baie-Comeau | 21.3°C | −18.8°C | 966 mm |
| Saint-Ulric 60 km · Mont-Joli | 22.9°C 1.6°C warmer | −15.4°C 3.4°C milder | 932 mm |
| Matane 65 km · Causapscal | 23.8°C 2.5°C warmer | −19.2°C about the same | 932 mm |
| Sainte-Félicité 72 km · Cap-Chat | 19.7°C 1.6°C cooler | −13.9°C 4.9°C milder | 966 mm |
Baie-Comeau 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 | −8.0°C | −18.8°C | −13.4°C | 65 mm | 72 cm |
| February | −6.7°C | −18.1°C | −12.4°C | 61 mm | 66 cm |
| March | −1.6°C | −11.7°C | −6.7°C | 64 mm | 60 cm |
| April | 4.6°C | −3.4°C | 0.6°C | 72 mm | 22 cm |
| May | 12.3°C | 2.0°C | 7.2°C | 76 mm | 2 cm |
| June | 18.3°C | 7.3°C | 12.8°C | 83 mm | 0 cm |
| July | 21.3°C | 10.7°C | 16.0°C | 111 mm | 0 cm |
| August | 20.7°C | 9.9°C | 15.3°C | 82 mm | 0 cm |
| September | 15.8°C | 5.4°C | 10.6°C | 93 mm | 0 cm |
| October | 9.0°C | 0.6°C | 4.8°C | 96 mm | 4 cm |
| November | 2.5°C | −4.9°C | −1.2°C | 87 mm | 31 cm |
| December | −4.0°C | −13.0°C | −8.6°C | 78 mm | 67 cm |
| Year | 7.0°C | −2.8°C | 2.1°C | 966 mm | 323 cm |
January has run from −40.1°C to 11.4°C in thirty years
The month to count on least is February: one year in three its average strays more than 2.9°C from −12.4°C. July moves least, typically by 0.9°C.
Where Baie-Comeau’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the closest ECCC location with twelve months of temperature normals, Baie-Comeau, 1991–2020.
- Other locations: where a location publishes no full year of precipitation or snowfall, the nearest one that does supplies it, named beside those figures.
- Comparisons: the towns and neighbourhoods of 2,500+ across Canada, each on its nearest normals location, without the city totals or the reserves.
- Not on this page: a sunshine figure (ECCC published none for 1991–2020) and any lapse-rate correction for height, as the town has no elevation here.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Baie-Comeau’s climate
How warm does Baie-Comeau get in summer?
Midsummer means July, with afternoons near 21.3°C on a typical day.
How cold does Baie-Comeau get in winter?
A typical January night falls to −18.8°C, the year’s low point.
How much rain and snow does Baie-Comeau get?
The year adds up to 966 mm. July is the peak month (111 mm) and February the low one (61 mm).
Are these figures for Baie-Comeau itself?
They are the normals for Baie-Comeau, measured just outside Baie-Comeau itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Baie-Comeau →
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).