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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Edition Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Plan your visit to Tadoussac based on the live forecast above, as this village at the confluence of the Saguenay River and the St. Lawrence Estuary sees rapid shifts in wind and fog. Conditions here are shaped by the meeting of cold river water and the broader gulf, making local data essential for whale-watching or hiking plans.
What is the weather typically like in Tadoussac?
Tadoussac experiences a humid continental climate, with cool summers and cold, snowy winters. Summer highs in July and August average around 20°C, though onshore breezes often keep it cooler near the water. Winter sees frequent snowfall, with January highs near -10°C, and the river ice influences local fog patterns in spring and autumn.
What is the best time for good weather in Tadoussac?
Late August through early October offers the most stable conditions, with lower humidity and less fog. September sees average highs of 16°C and is a prime window for whale watching. July is warmest, but fog and afternoon showers are more frequent. Winter months (December–March) are reliably cold and snowy, ideal for cross-country skiing at the nearby Parc du Fjord-du-Saguenay.
Does Tadoussac get a lot of rain?
Annual rainfall is moderate, about 900 mm, with October and November being the wettest months. Summer showers are often brief but can be intense. Snowfall averages 250 cm per year, peaking in January and February.
How accurate are the Tadoussac weather 14-day forecasts?
14-day outlooks provide general trends but are less reliable for this coastal zone because of microclimates from the Saguenay Fjord. For precise plans, check the live forecast above or use Environment Canada for hourly updates.
Is the weather in Tadoussac similar to Saguenay weather?
No—Tadoussac is cooler and foggier than inland Saguenay (Chicoutimi) due to its position where the Saguenay River meets the St. Lawrence. Saguenay sees warmer summers and less fog, making it a different microclimate entirely.
Sources
For a broader look at conditions across the province, see our Canada weather hub or check Montreal weather for comparison. You can also find the Vancouver weather page for a coastal contrast, or visit our weather warning page for alerts in your area.