‘Come cool down’: can San Francisco’s cold summers be a draw for tourists?

As heatwaves ravage the US west, San Francisco plans to use its famously chilly weather to lure visitors to the city

San Francisco's famously chilly summers have long shocked visitors, made sweatshirts a year-round gift shop staple, and turned its fog into a social media star.

Now, as California and the US west face increasingly searing summer weather, the city's tourism leaders want to turn San Francisco's frigid reputation into an advantage.