Benchmarked strictly across TripTiming's 5 empirical pillars: Crowds, Weather, Vibes, Prices, and Safety.
Cairo emerges as the optimal May destination with an overall TripTiming Index of 64/100 vs 62/100 for Amman (Petra) (+2 point advantage). Cairo experiences substantially lower visitor footfall and shorter landmark queues (moderate footfall vs heavy visitor congestion in Amman (Petra)). This is reinforced by lower lodging rates (~$130/night vs ~$165/night, saving ~$245 over 7 nights). While Amman (Petra) retains an edge in Weather Comfort (85/100 vs 68/100), Cairo's commanding performance in Space & Crowds secures the overall May recommendation.