St. Lawrence River Travel Guide
St. Lawrence River travel guide: interactive map, live weather, best time to visit, things to do and nearby places.
Summary
St. Lawrence River is a river in Quebec. St. Lawrence River is a river known as the Great Lakes outlet to the Atlantic.
Right now it is 51°F (10°C) in St. Lawrence River with clear. It feels like 49°F. Today runs from 50°F to 73°F. Chance of precipitation is 2%. Sightseeing conditions score 9/10 - excellent - go now.
The best time to visit St. Lawrence River is July and September. The climate is subarctic. January, March and December tend to be the least comfortable months. July is the warmest month with average highs near 78°F, while February is the coldest with lows near 4°F.
The closest major airport is Montreal-Trudeau International Airport (YUL), about 153 mi away. Nearby highlights include Baxter State Park, Mont-Tremblant National Park, Mount Washington and Franconia Notch State Park.
In plain terms. Today is about average for August. The forecast high of 73°F is in line with the 75°F typical for this month. The best window to be outside is roughly 12 PM to 3 PM, when temperature, rain chance and wind line up best. stargazing is the strongest bet in St. Lawrence River today at 9.9/10. No weather-related travel disruption is expected today. Roads and airports should run normally.
Compiled from this page's own data: atlas facts plus live Open-Meteo readings.
Map of St. Lawrence River
Interactive map with nearby places. Switch between street, terrain and satellite views.
Coordinates: 46°48′50″N 71°12′28.8″W (46.8139, -71.208)
Weather in St. Lawrence River right now
Source: Open-Meteo. Updated 10:28 AM, Aug 23 local time.
Weekend outlook
☁️ 73° / 50°
Overcast · 2% rain · wind 12 mph
🌦️ 64° / 61°
Light rain · 79% rain · wind 16 mph
Quick facts about St. Lawrence River
| Type | River |
|---|---|
| State | Quebec |
| Country | Canada |
| Continent | North America |
| Coordinates | 46°48′50″N 71°12′28.8″W (46.8139, -71.208) |
| Length | 744 mi |
| Known for | the Great Lakes outlet to the Atlantic |
| Local time | 10:28 AM (UTC-04:00) |
| Best months | July and September |
| Climate | Subarctic |
Things to do in St. Lawrence River
Attractions, parks and landmarks in and around St. Lawrence River.
Best time to visit St. Lawrence River
Go in July and September. These months score highest on comfortable temperatures, low rainfall and useful daylight.
Hardest months: January, March and December - expect the least comfortable mix of heat, cold or rain.
What to pack, what to skip
- Layers - the daily swing is 55°F, so mornings feel nothing like afternoons
- A packable rain shell - 4 of the next 7 days carry a real chance of rain
- If your dates are flexible, avoid January, March and December - historically the least comfortable months here.
Airports near St. Lawrence River
Closest airports with IATA codes and distances.
| Airport | Code | Distance | Serves |
|---|---|---|---|
| Montreal-Trudeau International Airport | YUL | 153 mi | Montreal |
| Boston Logan International Airport | BOS | 308 mi | Boston |
Explore St. Lawrence River
Every topic we hold for this place, and the same topic for the places around it.
Travel Guide for related places
Frequently asked questions
Where is St. Lawrence River?
St. Lawrence River is a river in Quebec. Its coordinates are 46.8139, -71.208. It lies in North America.
What is the weather like in St. Lawrence River right now?
It is currently 51°F (10°C) with clear. Humidity is 82% and wind is 2 mph.
When is the best time to visit St. Lawrence River?
July and September offer the most comfortable conditions in St. Lawrence River, which has a subarctic climate. January, March and December are usually the hardest months for outdoor plans.
What time zone is St. Lawrence River in?
St. Lawrence River observes America/Toronto (UTC-04:00). The local time is 10:28 AM.
What is the nearest airport to St. Lawrence River?
The closest airports are Montreal-Trudeau International Airport (YUL), 153 mi away and Boston Logan International Airport (BOS), 308 mi away.
What are the top things to do in St. Lawrence River?
Popular options include Baxter State Park, Mont-Tremblant National Park, Mount Washington, Franconia Notch State Park and Acadia National Park.
Related articles
Data sources and methodology
| Place data | USPOTUS Atlas dataset (rivers) - coordinates, hierarchy and facts. |
|---|---|
| Map tiles | OpenStreetMap contributors, CARTO and Esri. |
| Elevation | Open-Meteo digital elevation model where the dataset has no value. |
| Method | Scores, comparisons and advice on this page are computed from the inputs above. Distances are straight-line. Nothing is estimated where data is missing - the block is simply not shown. |
Last updated August 23, 2026 at 10:28 AM local time. Live blocks refresh every 15 minutes; climate averages monthly.
