Anticosti

Nature Reserve Large Saint Lawrence island with forests and dramatic cliffs

Anticosti Island in Québec sits in the Gulf of St. Lawrence, known for long coastal cliffs, river networks, abundant white‑tailed deer and Atlantic salmon runs; anglers, birdwatchers and road‑trippers explore its sparse settlements and rugged shoreline.

Main image

Anticosti is a large island in the Gulf of St. Lawrence belonging to the province of Quebec, Canada, notable for its remote, largely undeveloped landscape and rich natural history. The island covers roughly 7,900 square kilometres and stretches over 200 kilometres east to west, making it one of Quebec’s largest islands.

The landscape is dominated by boreal forest, river valleys and limestone coastal cliffs, with numerous salmon rivers and extensive wildlife populations including a high-density introduced population of white-tailed deer. The island’s geology contains sedimentary sequences that preserve fossils and a varied coastal morphology.

Human settlement is minimal and concentrated in the village of Port-Menier on the western shore, which functions as the administrative and logistical base for visitors. Access is typically by scheduled ferry or small aircraft, and facilities are limited outside the main settlement.

Anticosti lies in the Gulf of St. Lawrence off Quebec’s Côte-Nord region and is administered by the province of Quebec; the island’s isolation and scale are defining features for visitors.

  • Remoteness and access: The island is large and sparsely populated, with much of its appeal tied to remote wilderness, river fishing and coastal cliffs; transport links are seasonal and limited.
  • Main settlement and transport: Port-Menier is the principal service hub with air and ferry connections that are subject to weather and seasonal schedules.

What to See #

  • Port-Menier: Port-Menier, the main settlement on the island located on the western coast, which serves as the island's service centre and ferry terminus.
Anticosti
49.5386, -63.2453

Tips for Visiting Anticosti #

  • Base yourself in Port-Menier, the island's main settlement and travel hub - most passenger ferries and flights arrive there and it's where supplies, guides and vehicle hire are centred.
  • Plan for summer months (late June-August) when the ferry/flight schedules and visitor services operate most reliably, and road access around the island is at its easiest.
  • Explore beyond the shoreline: the island's interior requires long dirt-road drives and is best visited with a prepared vehicle (extra fuel, spares) and an overnight plan; many day visitors miss the interior landscapes and wildlife because they stay only in Port-Menier.

Best Time to Visit Anticosti #

Visit in summer (June-August) for the clearest access, milder weather and best opportunities for outdoor activities.

Summer (best time)
June-August · 8-18°C
Cool, relatively mild weather and long daylight hours make this the best season for hiking and boating.
Autumn/Shoulder season
September-October · 0-10°C
Fewer visitors and changing light make for good wildlife viewing, but conditions grow cooler and more unsettled.
Winter (limited access)
November-April · -15-0°C
Cold, snowy conditions with possible sea ice and limited services; travel and outdoor activities can be difficult.

Weather & Climate near Anticosti #

Climate

Anticosti'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 -17°C to 20°C. Moderate rainfall (972 mm/year).

Air Quality: AQI 14 Good
Best Time to Visit
JulyJuneAugust
Temperature & Rainfall
Temperature Range
27°
Warmest Month
-29°
Coldest Month
Monthly Conditions

January

January is the coldest month with highs of -8°C and lows of -17°C. Moderate rainfall (79 mm) and mostly overcast skies.

27 Poor

Comfort

-12°
Feels Like Freezing
-12°C
Temperature
-17° -8°
92%
Humidity
Very Humid

Weather

79 mm
Rainfall
4.5 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.5h daylight

February

February is freezing with highs of -8°C and lows of -17°C. Moderate rainfall (61 mm) and mostly overcast skies.

31 Poor

Comfort

-12°
Feels Like Freezing
-12°C
Temperature
-17° -8°
91%
Humidity
Very Humid

Weather

61 mm
Rainfall
4.4 m/s
Wind
Light Breeze
0.2
UV Index
Low
9.9h daylight

March

March is freezing with highs of -3°C and lows of -11°C. Moderate rainfall (64 mm) and partly cloudy skies.

39 Poor

Comfort

-7°
Feels Like Freezing
-7°C
Temperature
-11° -3°
89%
Humidity
Very Humid

Weather

64 mm
Rainfall
4.7 m/s
Wind
Light Breeze
0.4
UV Index
Low
11.7h daylight

April

April is freezing with highs of 3°C and lows of -4°C. Moderate rainfall (64 mm) and partly cloudy skies.

48 Poor

Comfort

-1°
Feels Like Freezing
-1°C
Temperature
-4°
86%
Humidity
Very Humid

Weather

64 mm
Rainfall
4.4 m/s
Wind
Light Breeze
0.8
UV Index
Moderate
13.6h daylight

May

May is cold with highs of 9°C and lows of 1°C. Moderate rainfall (74 mm) and partly cloudy skies.

58 Acceptable

Comfort

Feels Like Cold
C
Temperature
84%
Humidity
Very Humid

Weather

74 mm
Rainfall
3.9 m/s
Wind
Light Breeze
1.2
UV Index
High
15.2h daylight

June

June is cool with highs of 16°C and lows of 7°C. Regular rainfall (85 mm) and partly cloudy skies.

66 Good

Comfort

12°
Feels Like Cool
12°C
Temperature
16°
83%
Humidity
Very Humid

Weather

85 mm
Rainfall
3.6 m/s
Wind
Light Breeze
1.4
UV Index
High
16.0h daylight

July

July is cool with highs of 20°C and lows of 11°C. Regular rainfall (90 mm) and partly cloudy skies.

68 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 20°
83%
Humidity
Very Humid

Weather

90 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.4
UV Index
High
15.6h daylight

August

August is cool with highs of 19°C and lows of 11°C. Regular rainfall (92 mm) and partly cloudy skies.

66 Good

Comfort

15°
Feels Like Cool
15°C
Temperature
11° 19°
81%
Humidity
Very Humid

Weather

92 mm
Rainfall
3.3 m/s
Wind
Light Breeze
1.2
UV Index
High
14.2h daylight

September

September is cool with highs of 14°C and lows of 6°C. Regular rainfall (84 mm) and partly cloudy skies.

58 Acceptable

Comfort

10°
Feels Like Cool
10°C
Temperature
14°
82%
Humidity
Very Humid

Weather

84 mm
Rainfall
3.7 m/s
Wind
Light Breeze
0.8
UV Index
Moderate
12.4h daylight

October

October is cold with highs of 8°C and lows of 0°C. The wettest month with heavy rain (102 mm) and partly cloudy skies.

46 Poor

Comfort

Feels Like Cold
C
Temperature
84%
Humidity
Very Humid

Weather

102 mm
Rainfall
4.0 m/s
Wind
Light Breeze
0.4
UV Index
Low
10.6h daylight

November

November is freezing with highs of 2°C and lows of -5°C. Regular rainfall (92 mm) and mostly overcast skies.

33 Poor

Comfort

-2°
Feels Like Freezing
-2°C
Temperature
-5°
85%
Humidity
Very Humid

Weather

92 mm
Rainfall
4.3 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.9h daylight

December

December is freezing with highs of -5°C and lows of -12°C. Regular rainfall (85 mm) and mostly overcast skies.

29 Poor

Comfort

-9°
Feels Like Freezing
-9°C
Temperature
-12° -5°
90%
Humidity
Very Humid

Weather

85 mm
Rainfall
4.6 m/s
Wind
Light Breeze
0.1
UV Index
Low
8.0h daylight

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