[header] How to time your trip to san francisco [title] Avoid the fog if you can, but know that it's hard to predict. [step] The city by the bay is often referred to as fog city due to the dense fog that is capable of hiding the golden gate bridge. [substeps] Summer is the worst season for foggy san francisco weather. 
Summers are often cool and overcast, too. [title] Enjoy san francisco travel in spring and early autumn.