San Francisco's weather is famously unique and often surprising. Characterized by its Mediterranean climate, the city experiences cool, wet winters and mild, dry summers. However, the microclimates scattered throughout the city mean you can experience sunshine in one neighborhood and fog in another just a few blocks away. The infamous fog, affectionately nicknamed "Karl the Fog," is a common sight, especially during the summer months. Overall, San Francisco enjoys relatively moderate temperatures year-round, rarely experiencing extreme heat or cold, making it a comfortable place to explore, as long as you're prepared for layers!