How Crowded Is World War II Memorial in May?

May runs about 1.5× World War II Memorial's average month, which makes it a busy month here — roughly 12% of the park's yearly visitors come in May.

In a typical May the park sees about 531,000 recreation visits, based on National Park Service monthly counts from 2004 to 2025.

It is the single busiest month of the year at World War II Memorial; January, the quietest, runs only about 0.4× the average — a 4-to-1 swing between high and low season.

On our Best Time to Visit score May rates 50/100 ("Fair"), versus the top-rated September at 59/100 — pleasant weather with noticeably thinner crowds (shoulder season).

Typical May weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 77°F and an overnight low around 58°F, with about 3.9" of precipitation.

That average of about 67°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 31% of annual visitors, choosing May instead steps outside that summer crush — the single biggest lever on how crowded the park feels.

You'll have about 14.1 hours of daylight in May to explore — between the 9.3-hour midwinter low and the 14.7-hour summer high.

Park-wide, 2025 drew 3,993,717 recreation visits, down 22.6% from 5,160,769 in 2024.

Across the past decade overall visitation has risen about 7.9%, so a May visit is likely to feel busier than it did a few years ago.