Weather Forecast for Avalon, Santa Catalina Island, California, USA

Avalon, CA Historic Weather Averages

January: High 63°F (17°C), Low 48°F (9°C)
February: High 63°F (17°C), Low 48°F (9°C)
March: High 64°F (18°C), Low 49°F (9°C)
April: High 66°F (19°C), Low 51°F (11°C)
May: High 68°F (20°C), Low 54°F (12°C)
June: High 70°F (21°C), Low 58°F (14°C)
July: High 74°F (23°C), Low 62°F (17°C)
August: High 75°F (24°C), Low 63°F (17°C)
September: High 74°F (23°C), Low 62°F (17°C)
October: High 72°F (22°C), Low 58°F (14°C)
November: High 68°F (20°C), Low 52°F (11°C)
December: High 64°F (18°C), Low 49°F (9°C)

Catalina Island tends to have most of its rainfall in the winter months, with very dry summers.

Humidity on Catalina Island is relatively consistent throughout the year due to its proximity to the Pacific Ocean.

Winter (December to February): Sea temperatures range from 58°F to 61°F (14-16°C)
Spring (March to May): Sea temperatures range from 61°F to 63°F (16-17°C)
Summer (June to August): Sea temperatures range from 67°F to 70°F (19-21°C)
Fall (September to November): Sea temperatures range from 67°F to 63°F (19-17°C)

Catalina Island generally enjoys sunny weather, especially in the late spring, summer, and fall.

Sunniest Months: July, August, and September, with about 9-10 hours of sunlight per day.
Cloudiest Months: December, January, and February, with about 5-6 hours of sunlight per day.

Catalina Eddy: Occasionally during the summer, a coastal weather phenomenon known as the "Catalina Eddy" can occur, bringing low clouds and fog in the early mornings, which usually clear by midday.
Marine Layer: Early morning fog is common, especially in the spring and early summer. The fog tends to burn off by noon, revealing bright and sunny afternoons.