Thermal springs flow from the Ouachita Mountains into historic bathhouses in the oldest federally protected reserve.
March–May and October: mild temperatures for hiking and soaking.
Spring break and summer weekends fill Bathhouse Row.
Summers are hot and humid; winters are mild but can bring ice storms.
General patterns — conditions vary by year. Check current NPS alerts and road status before you go.
Distances are rough estimates to the closest entrance. Check road and ferry conditions before you go.
Campgrounds inside the park are booked through Recreation.gov, and many fill months ahead.
FIND CAMPSITES ON RECREATION.GOV ↗