San Miguel Island - Weather

Weather

San Miguel Island does not receive protection from the open ocean as the other Channel Islands. Most of the time a strong northwest wind blows across the island. These winds typically exceed 25 mph (40 km/h) and can surpass 50 mph (80 km/h). When strong high pressure is over the mainland, the winds often cease.

Heavy fog is common on the island. On warmer days the fog will burn off only to have the strong northwest wind blow in additional fog from the open ocean. On foggy days the temperature will rarely exceed 55 °F (13 °C).