Mont Saint-Hilaire Mountain
Granite mountain and ecological reserve near Montreal
A green massif east of Montreal, Mont Saint-Hilaire hosts hiking trails, rare flora and a nature reserve with geology exhibits; visitors come for outdoor recreation and seasonal foliage.
Mont Saint-Hilaire at a Glance#
Address: Mont Saint-Hilaire, Montérégie, Quebec, Canada (several access points and reserve trailheads)
Website: https://msh.umontreal.ca/
About Mont Saint-Hilaire#
Mont Saint-Hilaire is a 414 m (1,358 ft) mountain in Montérégie, Quebec, located in the municipality of Mont-Saint-Hilaire and part of the Monteregian Hills. It is a prominent natural landmark on the south shore of the Saint Lawrence River and a local destination for outdoor recreation.
Trails across mixed hardwood forest lead to viewpoints that look over the Richelieu River valley and the Saint Lawrence plain; many routes gain the summit in less than 5 km. The slopes include protected woodland and habitat used for birdwatching, short-day hikes, and seasonal nature study. The mountain is also known locally for its varied rock outcrops and interest to amateur geologists.
Geologically the mountain is an intrusive igneous stock related to the chain of Monteregian Hills formed in the Early Cretaceous. Its present wooded character reflects post-glacial recolonization and long-term protection of large tracts of forested land.
The peak sits in the town of Mont-Saint-Hilaire, about 30 km southeast of downtown Montreal in the Montérégie region. It rises sharply above nearby agricultural lowlands and is accessed by local roads from Route 116 and the town centre.
- Elevation: Summit reaches 414 m (1,358 ft), making it a conspicuous local peak on the south shore of the Saint Lawrence lowlands.
- Geology and nature: Part of the Monteregian Hills igneous intrusions; notable for extensive forest cover and protected habitat on its slopes.
How to Get to Mont Saint-Hilaire#
Mont Saint‑Hilaire is about a 45‑minute drive east of Montreal along Autoroute 20; commuter rail (Exo) serves the nearby town with short onward taxi or bus connections to reserve trailheads.
Tips for Visiting Mont Saint-Hilaire#
- Hike to the summit viewpoints early to catch the sunrise over the Richelieu River valley - the light is excellent for landscape photography
- Visit the Gault Nature Reserve trails and the interpretive centre to learn about the mountain's geology and rare plants
- Bring insect repellent in summer-the trails can be buggy near wetlands
Best Time to Visit Mont Saint-Hilaire#
Late spring through autumn is best for trails and viewpoints; autumn colours are a highlight.
Weather & Climate near Mont Saint-Hilaire#
Mont Saint-Hilaire's climate is classified as Warm-Summer Continental - Warm-Summer Continental climate with mild summers (peaking in July) and freezing winters (coldest in January). Temperatures range from -16°C to 25°C. Abundant rainfall (1175 mm/year), wettest in August, distributed fairly evenly throughout the year.
| Month | Comfort | Temp | Feels | Rain | Sky | Humidity | Wind | UV | Daylight |
|---|---|---|---|---|---|---|---|---|---|
| January | - | -16° - -7° | -18° | 85 mm | - | - | 3.4 m/s | - | - |
| February | - | -15° - -5° | -16° | 70 mm | - | - | 3.4 m/s | - | - |
| March | - | -8° - 1° | -8° | 81 mm | - | - | 3.5 m/s | - | - |
| April | - | -1° - 9° | 1° | 91 mm | - | - | 3.5 m/s | - | - |
| May | - | 6° - 17° | 12° | 96 mm | - | - | 3.3 m/s | - | - |
| June | - | 12° - 22° | 17° | 108 mm | - | - | 2.8 m/s | - | - |
| July | - | 14° - 25° | 20° | 111 mm | - | - | 2.6 m/s | - | - |
| August | - | 14° - 24° | 19° | 116 mm | - | - | 2.4 m/s | - | - |
| September | - | 9° - 19° | 14° | 103 mm | - | - | 2.7 m/s | - | - |
| October | - | 3° - 12° | 6° | 104 mm | - | - | 3.0 m/s | - | - |
| November | - | -3° - 5° | -3° | 109 mm | - | - | 3.2 m/s | - | - |
| December | - | -11° - -3° | -12° | 101 mm | - | - | 3.3 m/s | - | - |