Mammoth Cave · May
Mammoth Cave in May
May is a busy time to visit Mammoth Cave — about as busy as April, quieter than June.
Crowd score
How busy it gets
Approaching peak season — expect full lots by mid-morning and busy overlooks.
About 67% of this park's busiest month.
Source: NPS Visitor Use Statistics, 2023–2025
Data: NPS visitation 2023–2025 · crowd scores computed Jul 2026 · alerts checked Jul 10, 2026. How this is calculated →
Computed from federal data · Methodology by Sharon Ben-Moshe
Visitation
Typical May visits vs. the year
Typical monthly recreation visits, averaged over the most recent three full years.
Source: NPS Visitor Use Statistics, 2023–2025
Weather
May weather
- Avg high
- —
- Avg low
- —
- Precipitation
- 5.3"
- Sunrise
- 4:35 AM
- Sunset
- 6:46 PM
- Daylight
- 14.2h
Source: NOAA 1991–2020 climate normals, SMITHS GROVE 0.3 SE, KY US
What's open
Mammoth Cave in May: access
Mammoth Cave National Park is open 24-hours a day, although services such as cave tours and the visitor center are limited after-hours. There is no gate at the park entrance. Please note that camping is only possible either in designated campgrounds or backcountry campsites with a valid reservation or permit.
Seasonal closures may apply:
- Information
Temporary Closure of Select Trails for Rehabilitation Project
The Old Guides Trail, Heritage Trail, Sunset Point Trail and areas of the Sinkhole Trail are currently closed due to a trail rehabilitation project.
- Park Closure
Elevator for Accessible Tour Out of Service
Due to mechanical issues with the cave elevator, the Accessible Tour is currently unavailable. Please check back for updates or call the visitor center at (270) 758-2180.
Source: NPS Data API
Conditions
Current alerts
- Information
Tickets are required to enter Mammoth Cave
Reservations are strongly recommended. Reservations are the only way to ensure a spot is available for your party. Please plan accordingly by visiting Recreation.gov to secure your tickets in advance. Availability of walk-up tickets is not guaranteed.
Details on nps.gov → - Information
Temporary Closure of Select Trails for Rehabilitation Project
The Old Guides Trail, Heritage Trail, Sunset Point Trail and areas of the Sinkhole Trail are currently closed due to a trail rehabilitation project.
- Park Closure
Elevator for Accessible Tour Out of Service
Due to mechanical issues with the cave elevator, the Accessible Tour is currently unavailable. Please check back for updates or call the visitor center at (270) 758-2180.
Source: NPS Data API
Context
Mammoth Cave crowds across the year
Alternatives
Quieter nearby in May
FAQ
Mammoth Cave in May
How busy is Mammoth Cave in May?
May rates 7/10 for crowds (Busy) at Mammoth Cave National Park — about 67% of its busiest month. Typical recreation visits: 66,863.
What is the weather like at Mammoth Cave in May?
In May, Mammoth Cave averages a high of 0°F and a low of 0°F, with about 5.3 inches of precipitation.