Big Island Snorkel Conditions Report

Help with finding the best conditions for snorkeling on the Big Island today.

 

Big Island Snorkel Conditions Report:

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Saturday, March 14, 2026

Ocean conditions today are extremely hazardous due to a powerful and prolonged Kona Storm moving across the island chain. Strong, gusty southerly winds (20–30 mph) and a building West-Northwest (WNW) swell are creating rough, choppy seas and dangerous surge on nearly all leeward and south-facing shores. Heavy rainfall and thunderstorms have triggered widespread Brown Water Advisories due to soil runoff and increased bacteria.

North & South Kohala (North)

Conditions are poor. While the south winds are technically offshore for some of these bays, the wrap-around energy from the WNW swell and locally generated wind waves is creating significant surge and murky, sediment-heavy water.

Location Rating Clarity Wind Waves/Surf UV Index
Hapuna Beach 2 🔴 Murky S 25 mph 4–6 ft (Surge) 4 (Mod)
Wai‘alea Bay (69) 3 🔴 Low S 20 mph 2–4 ft 4 (Mod)
Makaiwa Bay 3 🔴 Silt S 20 mph Moderate Surge 4 (Mod)
Anaeho‘omalu Bay 2 🔴 Poor S 25 mph Rough/Choppy 4 (Mod)

Kona Coast (Central)

Kona is highly exposed to the current southerly wind flow. Popular sites are experiencing uncharacteristic chop, reduced visibility, and a dangerous shorebreak.

Location Rating Clarity Wind Waves/Surf UV Index
Kekaha Kai (Kua) 3 🔴 Milky S 25 mph 5–7 ft (Rough) 4 (Mod)
Honokohau Rock 3 🔴 Moderate S 20 mph 2–3 ft (Choppy) 4 (Mod)
White Sands Beach 1 🔴 Low S 30 mph 3–5 ft (Hazardous) 4 (Mod)
Kahalu’u Beach Park 3 🔴 Murky S 20 mph 2–3 ft (Surge) 4 (Mod)

South Kona

Typically a sanctuary, South Kona is currently vulnerable to the south-southwest wind fetch. High rainfall in the upland areas is likely causing runoff into these bays.

Location Rating Clarity Wind Waves/Surf UV Index
Kealakekua Bay 4 🔴 Fair/Murky S 20 mph Bumpy/Choppy 4 (Mod)
Pu‘uhonua O Honaunau 4 🔴 Silt S 20 mph Moderate Surge 4 (Mod)
Ho’okena Beach Park 2 🔴 Poor S 30 mph 6–8 ft (Rough) 4 (Mod)

Snorkel Conditions Key & Legend

Rating Color Symbol Meaning
8–10 Green 🟢 Excellent: Calm surface, high visibility, and safe.
5–7 Yellow 🟡 Fair: Generally safe, but visibility limited by surge.
1–4 Red 🔴 Hazardous/Poor: High surf, dangerous surge, or brown water.

⚠️ Marine Advisories & Hazards

  • Box Jellyfish Warning: We are 11 days past the full moon (March 3). Today is a High Probability window for box jellyfish on leeward shores. Sightings are common during these conditions; exercise extreme caution at Kahalu’u and Two-Step.
  • Flood Watch: A Flood Watch is in effect for all Big Island districts through Monday morning. Heavy rain and thunderstorms can cause “Brown Water” conditions instantly.
  • Wind Advisory: Southerly winds are gusting up to 45–50 mph. Kayaking and paddleboarding are extremely hazardous and not recommended.
  • Small Craft Advisory: Remains in effect for all coastal waters due to gale-force gusts and seas up to 14 feet in the channels.
  • Water Quality Advisory: The Department of Health advises staying out of the water when it appears brown or murky. Runoff contains bacteria, debris, and can attract predators.

Best Time to Go: Stay Out. Between the Kona storm runoff, extreme wind gusts, and box jellyfish window, today is not a safe day for ocean activities.

Ocean conditions can change rapidly.  Watch the surf, waves, currents and surge on the shoreline, rocks and reefs. Always spend a few minutes (5-10) in snorkel meditation watching the conditions.  Savor the moment.  If the water doesn’t look clear, calm and inviting, don’t go in!

Maui

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