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Map of Honokohau Harbor / Crescent Beach
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AdvancedShore entry

Honokohau Harbor / Crescent Beach

Hawaii, United StatesDirections
Advanced suggested5–20 m (16–66 ft) depthShore entryRash guard or 2mm shorty typical

Honokohau Harbor / Crescent Beach at a glance

Honokohau Harbor / Crescent Beach is an advanced shore dive site in Hawaii, United States with depths of 5–20 m (16–66 ft). Typically most favorable Jun–Jul · from 3 years of archive data. Divers commonly see Hawaiian green sea turtle, Eagle ray, and Garden eel. Recent reports put the water around 28°C (82°F). Check the latest conditions and entry details before you go.

Moderate window now· until 18:00 · sunset 17:53

Forecast for this hour · 17:00 · run 10 h ago
1.1 m (3.5 ft)waves — about a meter expected (waves — about four feet expected)

Tap a factor for its source and model point · Forecast 28°C · seasonal avg 27°C ( · Forecast 82°F · seasonal avg 81°F)

Site hazards: Active boat channel, shark encounters, lava-rock approach, surge, low-tide shallow reef, current, potential fishing activity, and difficult self-rescue if blown off the exit.

Read the full hazards ↓

Dive windows this week

Sun8:00–18:00 moderate

1.0 m waves · 4 kn wind (3.4 ft waves · 4 kn wind)

Mon7:00–18:00 moderate

1.1 m waves · 3 kn wind (3.6 ft waves · 3 kn wind)

Tue7:00–18:00 moderate

1.2 m waves · 3 kn wind (3.9 ft waves · 3 kn wind)

WedNo window

1.3 m waves · 10 kn wind (4.1 ft waves · 10 kn wind)

Thu7:00–18:00 moderate

1.2 m waves · 5 kn wind (3.9 ft waves · 5 kn wind)

Fri7:00–18:00 moderate

1.2 m waves · 4 kn wind (3.8 ft waves · 4 kn wind)

Sat7:00–18:00 moderate

1.1 m waves · 3 kn wind (3.7 ft waves · 3 kn wind)

Favorable windowModerate window— no window

Every forecast dive window each day, site-local time, from wave and wind forecasts. Numbers under each bar are daylight averages.

First light 5:59 · Sunrise 6:22 · Sunset 17:53 · some windows run past sunset

Source: Open-Meteo marine · model point 4.8 km from site · updated 25 Oct, 07:22 GMT-10

Forecast only — always assess conditions on site.

Compare this weekend’s windows near Honokohau Harbor / Crescent Beach

Forecast · NOAA tide model

Tide & slack timing

Loading tide predictions

Recent diver reports

Dated firsthand observations from divers — not current conditions.

No diver reports for this site yet. — one dated observation helps every diver after you.

Dived here today — did the forecast match?

What Divers Say

Best time: Calm summer/morning conditions are preferred; avoid winter northwest swell and any harbor/boat-traffic situations that reduce surface safety.

Based on community reviews and site data. Conditions vary — always verify before diving.

Best months, historically

What conditions have historically been typical at this site, month by month — not a forecast.

  1. January, 65% of days have historically been favorable, water has typically been 26°C (78°F), waves have typically been 1.6 m (5.2 ft), wind has typically been 6 knots
  2. February, 91% of days have historically been favorable, water has typically been 25°C (78°F), waves have typically been 1.3 m (4.3 ft), wind has typically been 5 knots
  3. March, 95% of days have historically been favorable, water has typically been 25°C (78°F), waves have typically been 1.2 m (3.9 ft), wind has typically been 5 knots
  4. April, 99% of days have historically been favorable, water has typically been 26°C (78°F), waves have typically been 1.0 m (3.4 ft), wind has typically been 5 knots
  5. May, 99% of days have historically been favorable, water has typically been 26°C (79°F), waves have typically been 1.0 m (3.4 ft), wind has typically been 5 knots
  6. June, 100% of days have historically been favorable, water has typically been 27°C (80°F), waves have typically been 1.0 m (3.3 ft), wind has typically been 5 knots, historically most favorable
  7. July, 100% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 0.9 m (3.1 ft), wind has typically been 5 knots, historically most favorable
  8. August, 96% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 1.0 m (3.3 ft), wind has typically been 5 knots
  9. September, 100% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 0.9 m (3.1 ft), wind has typically been 5 knots, historically most favorable
  10. October, 99% of days have historically been favorable, water has typically been 27°C (81°F), waves have typically been 1.0 m (3.3 ft), wind has typically been 5 knots
  11. November, 94% of days have historically been favorable, water has typically been 27°C (80°F), waves have typically been 1.1 m (3.7 ft), wind has typically been 5 knots
  12. December, 84% of days have historically been favorable, water has typically been 26°C (79°F), waves have typically been 1.3 m (4.3 ft), wind has typically been 5 knots

June, July, and September have typically had the largest share of favorable days here. Conditions vary year to year — this is historical context, not a forecast.

Based on 3 years of archive data. Bar height shows the share of days each month whose conditions have historically scored favorably.

Marine life recorded at this site, by month

Recorded observations — evidence of past sightings, not a promise of what you’ll encounter.

Species seen here

Rough labels: “Commonly seen” usually means two or more recorded sightings near this site in public dive logs (GBIF), “Occasionally seen” one; “Seasonal” and “Rarely seen” come from dive-guide research. Not a measured rate.

  • Spinner Dolphin recorded here Jul (2 records)

    Stenella longirostrismost recent 2012

  • Antennatus tuberosus recorded here Aug (1 record)

    most recent 2010

  • Reef Manta Ray recorded here May (1 record)

    Mobula alfredimost recent 2015

  • Sea eagle recorded here Aug (1 record)

    Myliobatis aquilamost recent 2013

  • Seven-arm Octopus recorded here Aug (1 record)

    Haliphron atlanticusmost recent 2013

  • Spotted Eagle Ray recorded here Aug (1 record)

    Aetobatus narinarimost recent 2010

Newest record here: 2015. Counts are occurrence records near this site from public biodiversity datasets (GBIF), grouped by calendar month across all sampled years. Sightings vary — past records are context, not a prediction.

Fills & rentals nearby

Facts from OpenStreetMap, corrected by the community — listed by distance only. Details change; confirm with the shop.

Shop facts come from OpenStreetMap and community corrections, shown nearest first. PickADive lists facts and contacts only — no listing is sponsored or ranked.

Data updated July 2026

Site details

Honokohau Harbor is mostly Kona's dive-boat hub, but the nearby Crescent Beach/Alua/Naiʻa Bay shore entry is also a real local dive. The dive crosses a lava-walk approach to a small cove and follows a reef/sand slope near the active harbor entrance. It is a specialty shore dive rather than a general beginner reef, mainly for experienced divers who understand the boat-traffic and shark-context hazards.

reefshore

Active boat channel, shark encounters, lava-rock approach, surge, low-tide shallow reef, current, potential fishing activity, and difficult self-rescue if blown off the exit.

Reviews

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