Skip to content

Mermaid Cave / Tunnels

Mermaid Cave / Tunnels from directly overhead

Mermaid Cave / Tunnels is an attraction in Hawaiʻi, at a modelled elevation of 3 m. Kaʻala stands 1,229 m to the north, 9.3 miles off. The nearest named place is Nanakuli Beach Park, a beach 0.2 miles away.

What to expect

Step-free access
No

How to reach it

Coordinates21.37370, -158.14133

Named places within 25 miles

Attractions
  • Nanakuli Beach Park / Kalanianaole Beach Park: 0.2 mi
  • Island Racer: 4.3 mi
  • Island Adventure Golf: 4.4 mi
  • Big Kahuna: 4.4 mi
  • Da Flowrider: 4.4 mi
Parks
Historic sites
Beaches: 54
  • Nanakuli Beach Park: 0.2 mi
  • Hawaiian Electric Beach Park: 1.3 mi
  • Kahe Point: 1.5 mi
  • Ko Olina: 3.4 mi
  • Aki's Beach: 8.2 mi
Gardens: 35
Artworks: 19
Springs: 14
Waterfalls: 11
  • Puehuehu: 18.7 mi
  • Waikahalulu Falls: 18.7 mi
  • Waimea Falls: 18.8 mi
  • Kapena Falls: 19.3 mi
  • Waipuhia Falls: 21.6 mi
Cliffs: 2
Lighthouses: 1

Summits around it

The highest named summits within 20.1 miles of Mermaid Cave / Tunnels. Elevation from each summit’s own record; bearing measured between the two coordinates.

SummitBearingElevationDistance
KaʻalaN 360°1,229 m9.3 mi
PuʻukalenaN 4°1,068 m8.0 mi
KamaohanuiN 3°1,024 m9.6 mi
PuʻukauaNNE 30°940 m5.4 mi
PalikeaNE 43°938 m3.9 mi
PuʻukawiwiNNW 348°899 m8.3 mi
PuʻuhapapaNNE 20°879 m6.9 mi
PuʻukūmakaliʻiN 10°878 m7.5 mi

When to go

Light through the year

DateSunriseGolden hourSunset
March equinox06:3718:1518:44
June solstice05:5218:4619:18
September equinox06:2218:0118:30
December solstice07:0717:2417:56

Local time (Pacific/Honolulu).

Climate normals

Months averaging 50–80 °F: year-round.

JanFebMarAprMayJunJulAugSepOctNovDec
Avg °F676767697072737474747168

1991–2020 U.S. Climate Normals, NOAA NCEI — PUU Manawahua 725.6, 2 mi away.

Where this comes from

Location and category confirmed against OpenStreetMap.

OpenStreetMap

OpenStreetMap element node/5104847326

More attractions in Hawaiʻi

Drive to it

Byway plans a real route around stops like this one.

Private beta · Free to join

Take the scenic way to Mermaid Cave / Tunnels.

Byway plans around your taste, verified places, real weather and opening hours — then opens every leg in Google Maps with one tap.

Private beta · Free to join · No card · Invite when a spot opens