Finding the pulse of the reef...
This week
snorkel & freedive readBest day this week: tomorrow, all day, and only a mixed read.
Next 12 hours
Rain now, partly cloudy moving in around 2 PM.
Conditions
Visibility, water, current, and wind. The in-water read.
Visibility
Poor
Strong onshore — blown out · Recent / incoming rain
Water
80°
1–2 mm
Current
1.2 kt
moderate drift
Surge
6.95s
some surge
Wind
15 mph
onshore E
Visibility is an estimate — wind, rain, tide & water alerts.
The spot
The things that stay true when the weather changes.
Yes. Tunnels (Mākua) Beach, HI is snorkelable directly from shore.
Tunnels (Mākua) Beach, HI runs roughly 3 to 25 feet deep in the area people use.
Summer, roughly May to September, when North Shore surf is small and the inner reef stays calm. Snorkel only on flat days and stay shoreward of the waves breaking on the outer reef.
Very limited. The small lot at the beach access about 0.6 miles past mile marker 8 fills early, so most people park at Haena Beach Park half a mile west and walk.
Checked 2026-07-19. Sources: Hawaii DLNR Division of Aquatic Resources, Safe to Swim Hawaii, Kauai Explorer.
Tides & Sky
When the water moves, and how bright the night.
Tide predictions aren't available for this spot right now.
Full Moon
100%
Daylight: 12h 40m · UV 9 Very high
Life
The reef keeps its own calendar.
Black-crowned Night Heron · White-tailed Tropicbird · Red-footed Booby · Western Cattle-Egret · Red-footed Booby +4 more
Regulations
Take only what the season allows.
We've only loaded detailed seasons & limits for South Florida so far. For Hawaii, check the official source before you fish:
Hawaii saltwater regulationsOfficial source: DLNR DAR· opens the agency site
The reef will wait for a clearer day.
Snorkel: poor viz, warm 80 F water, 4-4 ft waves, 15 mph onshore wind.
Some data estimated