How Crowded Is San Juan in May?
Average0.9× average month · best-time score 57/100
May is an average month at San Juan National Historic Site, running about 0.9× the park's average month — roughly 8% of the year's visitors come in May. That puts it between the March peak and the September low. Overall our best-time score rates May as "Fair" for a visit. You'll get about 12.9 hours of daylight to explore.
Frequently Asked Questions
May is average at San Juan National Historic Site (about 0.9× the average month). Our best-time score rates it "Fair". The single best month overall is September.
The busiest month is March and the quietest is September. May sits at about 0.9× the park's average, or 8% of annual visitation.
Source: National Park Service Visitor Use Statistics (1979–2025). Updated 2026-06-20.