Shediac is wetter than 89% of Canadian towns: 1,203 mm of rain and snow a year
Deep winter brings January lows near −13.3°C. Some 38°C separates winter nights from summer afternoons. Warm coats and heating bills mark the months from October to April, when means dip under 10°C.
Borrowed figures: Shediac has no normals station, so these come from Moncton, 16 km south-west.
A year in Shediac at a glance
Each month’s typical high and low, in °C.
What stands out about Shediac’s climate
Compared with Canadian towns, with its place among towns of 2,500+ in New Brunswick beside it.
What a year in Shediac feels like
Seasons and months as ECCC’s 1991–2020 normals give them: a typical day’s high and low.
Frost on 170 days, 20°C on 98
Frost comes from October to May; in January almost every night freezes. Some 12 nights a year drop under −20°C.
Frost days by month
Average days at 0°C or below
Days above 20°C by month
Average days
About 1,203 mm of rain and snow a year
The most falls in October, the least in August. 9th wettest of 60 towns of 2,500+ in New Brunswick. On about 129 days a year, 1 mm or more falls.
Rain and snow by month
Millimetres
Rain alone by month
Millimetres
About 310 cm of snow a year
The snow season runs October to May; January brings the most, about 74 cm.
Snowfall by month
Centimetres
Snow on the ground by month
Centimetres at month’s end
Heating a home in Shediac
89% of a year’s heating need falls between October and April. Months averaging under 10°C: October to April.
Measured against 18°C: each day’s shortfall in mean temperature, added over twelve months.
Living with Shediac’s climate
What the normals mean for a garden, a day outside and the depth of winter.
The growing season between frosts lasts about 135 days, roughly 19 May to 2 October.
Highs of 17–27°C with nights of 8°C or more come in Jun, Jul, Aug and Sep.
Parks & trails →Frostbite weather, a wind chill under −20, turns up on about 43 days a year.
Muggy heat with a humidex over 30 arrives on about 34 days a year.
Thirty years of averages say little about one bad storm; Shediac’s hazards page does.
Flood & hazards →ECCC’s normals location: Moncton
Behind the 1991–2020 normals for Moncton are 2 stations, which ECCC combines into one record.
| Distance from the town | 16 km south-west |
| Station altitude | 71 m |
| Completeness | at least 20 years |
| WMO standard normals | No |
| Coldest reading, 1991–2020 | −31.4°C |
| Hottest reading, 1991–2020 | 35.6°C |
| Average wind | 16.7 km/h on average, most often from the south-west |
| Next-nearest location | Bouctouche, 30 km |
How Shediac 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 New Brunswick.
Nearby towns’ climate
Places around Shediac whose figures come from another normals location.
Shediac 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 | −3.5°C | −13.3°C | −8.4°C | 102 mm | 74 cm |
| February | −2.5°C | −12.7°C | −7.6°C | 88 mm | 65 cm |
| March | 2.2°C | −7.4°C | −2.6°C | 111 mm | 60 cm |
| April | 8.6°C | −1.5°C | 3.6°C | 94 mm | 29 cm |
| May | 16.1°C | 3.9°C | 10.0°C | 98 mm | 2 cm |
| June | 21.3°C | 9.2°C | 15.3°C | 95 mm | 0 cm |
| July | 25.1°C | 13.4°C | 19.3°C | 87 mm | 0 cm |
| August | 24.7°C | 12.7°C | 18.7°C | 77 mm | 0 cm |
| September | 20.2°C | 8.1°C | 14.2°C | 103 mm | 0 cm |
| October | 13.2°C | 2.9°C | 8.1°C | 124 mm | 2 cm |
| November | 6.3°C | −2.2°C | 2.1°C | 109 mm | 19 cm |
| December | 0.0°C | −8.7°C | −4.4°C | 115 mm | 59 cm |
| Year | 11.0°C | 0.4°C | 5.7°C | 1,203 mm | 310 cm |
In March, anything from −24.5°C to 26.1°C
January is the least predictable month: about two years in three its average lands within 2.5°C of the normal, −8.4°C. August is the steadiest, within 1.0°C.
Where Shediac’s numbers come from
Averages over 30 years, not a forecast.
- Normals: the Canadian Climate Normals, 1991–2020, at Moncton (the closest location with all twelve months of temperatures).
- Comparisons: Canadian towns and neighbourhoods of at least 2,500, each placed by its nearest location (city totals and reserves excluded).
- 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 Shediac’s climate
How warm does Shediac get in summer?
Peak warmth comes in July, at about 25.1°C by mid-afternoon.
How cold does Shediac get in winter?
A typical January night falls to −13.3°C, the year’s low point.
How much rain and snow does Shediac get?
A normal year brings 1,203 mm, snow included as water: October is wettest at 124 mm, August driest at 77 mm.
How long does snow stay on the ground?
The ground is white, with 1 cm or more, on some 120 days a year.
Are these figures for Shediac itself?
They describe Moncton, the nearest normals location, rather than Shediac itself.
Data Source: Environment and Climate Change Canada · ECCC Data Services End-use Licence Today’s forecast for Shediac →
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).