Benchmarked strictly across TripTiming's 5 empirical pillars: Crowds, Weather, Vibes, Prices, and Safety.
San Francisco emerges as the optimal May destination with an overall TripTiming Index of 64/100 vs 56/100 for Los Angeles (+8 point advantage). San Francisco experiences more manageable visitor density and shorter landmark queues (carrying capacity score 34/100 vs 17/100 in Los Angeles). This is reinforced by attractive lodging rates (~$330/night).