Mammoth Cave · May · Kentucky

Mammoth Cave National Park in May

May is a prime month to visit Mammoth Cave National Park. Expect busy. Highs average 75°F and lows 58°F, with about 4.99 inches of rain.

May gets a prime rating at Mammoth Cave. The very best months are Mar–May, Oct–Nov.

Full park guideAll parks in May
RatingPrime
CrowdsBusy
Avg high / low75°F / 58°F
Rain4.99 in

Last prime month

What to expect

May is prime at Mammoth Cave. Wildflowers bloom on the surface trails and the Green River runs high.

Local tip

Book cave tours online as soon as you know your dates. The most popular tours sell out weeks in advance in summer.

Good to know

  • Best months overall: Mar–May, Oct–Nov.
  • Closest airport: Nashville (BNA) or Louisville (SDF), about 1.5 hours.
  • Before you go: Cave tours require tickets. Bring a jacket; the cave is cool even in summer. Check current conditions on nps.gov.

2-day Mammoth Cave itinerary · Packing list

Questions

Is May a good time to visit Mammoth Cave National Park?

May is a prime month to visit Mammoth Cave National Park. Expect busy. Highs average 75°F and lows 58°F, with about 4.99 inches of rain.

What is the weather like in Mammoth Cave National Park in May?

Highs average 75°F and lows 58°F, with about 4.99 inches of rain. May is rated prime for visiting.

How crowded is Mammoth Cave National Park in May?

May brings busy to Mammoth Cave National Park. Go early in the day and book lodging ahead.