How Crowded Is North Cascades National Park in May?

May runs about 0.4× North Cascades National Park's average month, which makes it a very quiet month here — roughly 3% of the park's yearly visitors come in May.

In a typical May the park sees about 960 recreation visits, based on National Park Service monthly counts from 1979 to 2025.

That makes May the 6th-busiest of the park's twelve months, sitting between the July peak (3.6×) and the January low (0×).

On our Best Time to Visit score May rates 75/100 ("Excellent") — the single best-rated month at North Cascades, balancing crowds against weather and daylight.

Typical May weather, from 1991–2020 NOAA climate normals at the nearest station, averages a daytime high near 66°F and an overnight low around 44°F, with about 2.7" of precipitation.

That average of about 55°F is a comfortable range for hiking and being outdoors all day.

Because June, July and August together draw about 70% 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 15 hours of daylight in May to explore — between the 8.1-hour midwinter low and the 15.9-hour summer high.

Park-wide, 2025 drew 46,925 recreation visits, up 184.7% from 16,485 in 2024.

Across the past decade overall visitation has risen about 38.2%, so a May visit is likely to feel busier than it did a few years ago.