Longueuil

City · Montreal, 🇨🇦 Canada

Population 254,483

Area 115 km²

Time zone America/Toronto

Official website longueuil.quebec/fr

Longueuil – Planning a Trip?

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Longueuil Essentials

Longueuil anchors Montreal's South Shore with a mix of 19th-century heritage and modern public spaces. The city’s riverfront is defined by the Gothic Revival architecture of the Co-Cathedral of Saint-Antoine-de-Padoue and seasonal ferry links to the Old Port. Cultural landmarks include the Théâtre de la Ville and Plein Sud art center, while the Marché public provides access to regional Quebec producers. For recreation, the city offers the Parcours Du Cerf golf courses and the sustainable architecture of the Raymond-Lévesque library.

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Longueuil — Map

Climate & when to visit

Best time to visit: September

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Typical weather in January

Poor

-6° (feels like -13°) · extremes -31°–3°
-17° at night
14 rainy days
6 sunny days
3 hours of sunshine per day
Dry air
Light breeze
UV index 1 · low

Typical weather in February

Poor

-4° (feels like -11°) · extremes -27°–3°
-15° at night
11 rainy days
10 sunny days
5 hours of sunshine per day
Dry air
Light breeze
UV index 2 · low

Typical weather in March

Poor

2° (feels like -4°) · extremes -21°–13°
-8° at night
12 rainy days
12 sunny days
6 hours of sunshine per day
Dry air
Light breeze
UV index 3 · moderate

Typical weather in April

Poor

11° (feels like 6°) · extremes -5°–20°
1° at night
13 rainy days
11 sunny days
6 hours of sunshine per day
Dry air
Light breeze
UV index 4 · moderate

Typical weather in May

Good

19° (feels like 16°) · extremes 1°–27°
8° at night
14 rainy days
11 sunny days
7 hours of sunshine per day
Dry air
Light breeze
UV index 5 · moderate

Typical weather in June

Good

23° · extremes 8°–29°
14° at night
15 rainy days
11 sunny days
8 hours of sunshine per day
Comfortable humidity
Light breeze
UV index 6 · high

Typical weather in July

Good

27° (feels like 26°) · extremes 12°–32°
17° at night
17 rainy days
10 sunny days
8 hours of sunshine per day
Humid air
Light breeze
UV index 6 · high

Typical weather in August

Good

26° · extremes 11°–32°
16° at night
14 rainy days
10 sunny days
8 hours of sunshine per day
Humid air
Light breeze
UV index 6 · high

Typical weather in September

Great

23° (feels like 21°) · extremes 5°–30°
12° at night
11 rainy days
12 sunny days
7 hours of sunshine per day
Dry air
Light breeze
UV index 4 · moderate

Typical weather in October

Fair

14° (feels like 10°) · extremes -2°–23°
5° at night
13 rainy days
8 sunny days
4 hours of sunshine per day
Dry air
Light breeze
UV index 2 · low

Typical weather in November

Poor

6° (feels like 1°) · extremes -11°–15°
-2° at night
13 rainy days
4 sunny days
3 hours of sunshine per day
Dry air
Light breeze
UV index 1 · low

Typical weather in December

Poor

-2° (feels like -8°) · extremes -24°–6°
-11° at night
15 rainy days
3 sunny days
2 hours of sunshine per day
Dry air
Light breeze
UV index 1 · low

Climate data: NASA POWER (MERRA-2) · 1996–2025

Practical information

Currency: Canadian Dollar CAD $ · Card payments · Widely accepted
Emergency numbers: 911
Electricity: Type A / Type B
120 V · 60 Hz

Languages: English, French
Tap water: Safe to drink
Driving side: Right
Calling code: +1

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Tours & Activities

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Longueuil

Featured Lists

Longueuil Essentials

Longueuil — Map

Climate & when to visit

Typical weather in January

Typical weather in February

Typical weather in March

Typical weather in April

Typical weather in May

Typical weather in June

Typical weather in July

Typical weather in August

Typical weather in September

Typical weather in October

Typical weather in November

Typical weather in December

Practical information

Tours & Activities

Longueuil – Plan Your Days

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