How do the climates of Newfoundland island and Labrador differ during winter?

The climate of Newfoundland and Labrador is characterized by cold but generally not severe winters, though significant regional differences exist between the island of Newfoundland and the mainland region of Labrador.1

Temperature Variations

• Newfoundland Island: The southern portion of the island experiences milder winter conditions, with January mean temperatures typically remaining above 20 °F (−7 °C). Extreme low temperatures in southern Newfoundland rarely drop to 0 °F (−18 °C).1
• Labrador: Winters are notably colder and more continental. January mean temperatures on the coast of Labrador range from approximately 10 °F (−12 °C) in the south to 0 °F (−18 °C) in the north. The interior of western Labrador is significantly colder, with January means around −15 °F (−26 °C). In this western region, temperatures falling below −40 °F (−40 °C) are not uncommon.1

Influencing Factors

The climate is heavily influenced by the Labrador Current, which brings cold water along the coast. While midlatitude storms moving across Canada affect the entire province, the island’s maritime location moderates its temperatures compared to the more severe, continental conditions found in the interior of Labrador.12