Photo: Harfang · CC BY 3.0Wet weather: 1,130 mm of rain and snow a year falls on Nantes, more than on 83% of Canadian towns
Sunny July days climb to about 24.5°C. Temperatures cover 40°C across the year, low to high. Frosty nights outnumber those of 74% of Canadian towns. Windshields need scraping on about 187 mornings a year, the days the air reaches 0°C or below.
Borrowed figures: Nantes has no normals station, so these come from St Ludger, 26 km north-east.
A year in Nantes at a glance
Each month’s typical high and low, in °C.
What stands out about Nantes’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in Quebec beside it.
What a year in Nantes feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 187 days, 20°C on 96
From September to May frost is routine, and in January it comes on almost every night. Deep cold, under −20°C, comes on about 26 nights a year.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
Rain and melted snow: about 1,130 mm a year
July brings the most rain and snow; March, the least. On about 148 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
Snowfall: about 287 cm in a normal year
Expect snow from October to May, with about 65 cm in February, the snowiest month.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Nantes
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Heating degree days total each day’s gap between its mean temperature and 18°C. By this count, homes here need more heating than 72% of Canadian towns.
Living with Nantes’s climate
The averages read for the garden, the outdoors and the coldest and hottest days.
For long days outdoors, Jun, Jul and Aug bring highs of 17–27°C and lows of 8°C or more.
Parks & trails →A normal year has no blizzard, flood or heat wave in it; Nantes’s hazards page looks at those.
Flood & hazards →ECCC’s normals location: St Ludger
The page’s figures are ECCC’s 1991–2020 normals for St Ludger, one of its 450 normals locations.
| Distance from the town | 26 km north-east |
| Station altitude | 335 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −39.5°C |
| Hottest reading, 1991–2020 | 33.3°C |
| Next-nearest location | Sherbrooke, 61 km |
How Nantes 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
Nearby places read from a different ECCC location (places on Nantes’s own would show the same figures). The nearest places to Nantes with figures are 31–42 km away.
| Town | July high | January low | Rain & snow |
|---|---|---|---|
| Nantes St Ludger | 24.5°C | −15.9°C | 1,130 mm |
| Lambton 31 km · Thetford Mines | 23.5°C 1.0°C cooler | −16.1°C about the same | 1,324 mm |
| Bury 42 km · Sherbrooke | 25.3°C 0.8°C warmer | −16.5°C 0.6°C colder | 1,015 mm |
| La Guadeloupe 42 km · St Georges | 25.3°C 0.8°C warmer | −16.7°C 0.8°C colder | 1,054 mm |
Nantes weather by month
Average daily high and low, mean temperature, rain and snow (as water) and snowfall by month, 1991–2020.
| Month | High | Low | Mean | Rain & snow | Snow |
|---|---|---|---|---|---|
| January | −5.5°C | −15.9°C | −10.9°C | 93 mm | 60 cm |
| February | −4.0°C | −15.3°C | −9.7°C | 80 mm | 65 cm |
| March | 1.4°C | −9.6°C | −4.1°C | 77 mm | 50 cm |
| April | 9.1°C | −2.0°C | 3.8°C | 87 mm | 16 cm |
| May | 17.4°C | 4.4°C | 10.8°C | 98 mm | 1 cm |
| June | 22.1°C | 9.8°C | 16.0°C | 113 mm | 0 cm |
| July | 24.5°C | 12.8°C | 18.5°C | 115 mm | 0 cm |
| August | 23.5°C | 11.5°C | 17.5°C | 107 mm | 0 cm |
| September | 19.4°C | 7.2°C | 13.3°C | 90 mm | 0 cm |
| October | 11.8°C | 1.5°C | 6.5°C | 103 mm | 7 cm |
| November | 4.5°C | −4.2°C | 0.2°C | 80 mm | 24 cm |
| December | −2.1°C | −11.0°C | −7.0°C | 88 mm | 64 cm |
| Year | 10.2°C | −0.9°C | 4.6°C | 1,130 mm | 287 cm |
A January here can run warm or cold, its average moving by about 3.1°C; the steadiest month is August
Bars run from each month’s record low to its record high since 1991. January spans the most, from −38.0°C (1995) to 18.0°C (1995).
Where Nantes’s numbers come from
Averages over 30 years, not a forecast.
- Normals: ECCC’s 1991–2020 Canadian Climate Normals for St Ludger, the nearest location with a full year of temperatures.
- Comparisons: all Canadian places of 2,500 or more except city totals and reserves, each read the same way.
- Not on this page: sunshine (no 1991–2020 normals exist for it) and any altitude adjustment, since there is no elevation for the town itself.
Canadian Climate Normals 1991–2020 · ECCC Data Services End-use Licence. Data Source: Environment and Climate Change Canada
Questions about Nantes’s climate
How warm does Nantes get in summer?
July is the warmest month, with average highs of 24.5°C.
How cold does Nantes get in winter?
The coldest nights come in January, averaging −15.9°C.
How much rain and snow does Nantes get?
Rain and snow, with snow counted as water, total 1,130 mm a year; July leads with 115 mm and March trails with 77 mm.
How long does snow stay on the ground?
Around 127 days a year see 1 cm of snow or more lying.
Are these figures for Nantes itself?
No, the station behind them is St Ludger, beyond Nantes’s boundary.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Nantes →
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).