San Francisco's Wind Belt: Coastal Influences and Microclimates

San Francisco's wind belt features mild temperatures, moderate winds, and occasional strong gusts. Its Mediterranean climate is shaped by cool Pacific currents.

Key Characteristics

• Coastal Influence: Cool ocean currents and prevailing westerlies create a mild, temperate year-round climate.
• Westerly Winds: Dominant direction from west/northwest, bringing cool, moist air. Summer speeds often reach 20–30 mph (32–48 km/h).
• Microclimates: Hills and mountains create localized wind patterns; e.g., Richmond District is exposed, Marina District sheltered.
• Forested Areas: Parks (Presidio, Golden Gate Park) slow airflow, creating calmer pockets.
• Seasonal Variation: Stronger westerlies in summer; winter winds more variable due to storms and pressure changes.

The city's unique geography and coastal location produce its distinctive, mild climate and famous summer fog.