MARINE REPORT / 72 HOURS

Sharks Cove Snorkel Report Today

USA · Updated Wed 03:02 (HST) · Source: Snapshot

The skinny

Marginal Data updated Wed 03:02 (HST)

Sharks Cove looks marginal today. The least-bad daylight window is around Wed 08:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Wed 04:00 (HST)

Later today

Poor · 3.4/10

Wed 08:00 (HST)

Next three days

Fair · 3.9/10

Thu 07:00 (HST)

Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.

Score: 3.4/10

Best time: Wed 08:00

Main risk: Waves

Best morning signal: Wed 08:00 (Poor).

Best afternoon signal: Wed 12:00 (Poor). Peak afternoon wind is about 8.2 m/s.

Email me when it is good Compare nearby spots

Best nearby spots later today

Electric Beach 4.7/10 Fair · Wed 07:00 Kahe Point 4.7/10 Fair · Wed 07:00 Hanauma Bay 3.0/10 Poor · Wed 09:00

Weakest nearby later today

Hanauma Bay Lanikai Beach

Read the Oahu snorkeling guide for coast, access and best-month guidance.

Local beach intelligence

AreaNorth Shore

DifficultyModerate

Best timeSummer mornings

ExposureNorth Shore; unsafe during winter surf

ShoreLava-rock tide pools and cove

Plan your visit

These notes help with planning. Rules and closures can change.

Open map

AccessShore entry is over lava rock and the cove changes quickly with swell. Treat winter North Shore surf as a no-entry signal.

ParkingParking fills quickly on the North Shore. Use legal spaces and keep emergency access clear.

ReservationsNo general snorkel reservation is listed. Check posted rules and current surf notices.

ClosuresDo not enter during large surf, strong surge, or a posted closure. Summer conditions are usually the more practical window.

Marine lifeSharks Cove sits in the Pupukea Marine Life Conservation District. Do not take fish, coral, rocks, or shells.

Hawaiʻi marine rules and notices

Sunrise

06:41

Sunset

17:51

Water

25.7°C

Max air

27.1°C

Sky

Partly cloudy

36% cloud

No good model window in the next 72 hours

Use the best-available section for the least-bad times.

3-day planner Best available Show data

3-day planner

Wednesday

❌ Poor conditions

Main blocker: Waves

Thursday

⚠️ Fair conditions

Main blocker: Waves

Friday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Thu 07:00: Fair (0.39) · still limited by waves, wind
  • Fri 07:00: Fair (0.38) · still limited by waves, wind
  • Fri 08:00: Fair (0.35) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (70 hours)
  • Tide/current (68 hours)
  • Wind (60 hours)

Jellyfish drift risk

Drift estimate from wind, swell, current and warm water.

Low · 34/100

Low drift risk now.

warm water supports seasonal jellyfish activity; surface drift/current is noticeable; local shoreline exposure is not mapped yet.

Sightings override the model: if you see small purple jellyfish with long trailing tentacles, treat them as sting-capable and give them space.

Upcoming high tides

Next early morning high tide: Thu 04:00

Thu 04:00, Fri 05:00

Nearby snorkel spot map

Compare nearby spot forecasts for later today before choosing a beach.

Electric Beach Fair · Wed 07:00 4.7/10 Kahe Point Fair · Wed 07:00 4.7/10 Hanauma Bay Poor · Wed 09:00 3.0/10 Lanikai Beach Poor · Wed 09:00 3.0/10

Nearby alternatives in USA

Oahu

24 km away

❌ Poor

Electric Beach

33 km away

❌ Poor

Kahe Point

33 km away

❌ Poor

Lanikai Beach

46 km away

❌ Poor

Forecast spot map

Use the map to see where the compared spots sit. Open a card for the hourly forecast.

Electric Beach Kahe Point Hanauma Bay Lanikai Beach
  1. Electric Beach
  2. Kahe Point
  3. Hanauma Bay
  4. Lanikai Beach

This is a location diagram, not a marine chart. Check the shore and local signs in person.

Advanced forecast data

Viewing historical data

Sat 04:00 – Tue 04:00 (HST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.43 around Sat 08:00; 4 of 24 hours are good, fair, or excellent.

Score trend, higher is better. Excellent ≥ 0.72, good 0.55–0.72, fair 0.35–0.55.

Conditions (24h trends)

Tap a chart to load just that series.

0/24 sampled hours stay at or below 0.36m (range 1.4m to 1.74m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 2.64 to 4.35m/s).

Tides range from 0.36m to 0.87m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
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Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
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Poor ❌ Limited
Scoring methodology (for technical users)

We score each hour from 0 to 1 using daylight and these weighted components:

  • Wave height (35%): best below 0.36m, then decreases as it rises.
  • Wind speed (25%): best below 5.4m/s, lower is better.
  • Sea surface temperature (15%): best within 20.6°C to 30.4°C.
  • Tide and currents (15%): best around slack/high-tide windows.
  • Daylight (10%): visibility is better in daylight, so night hours score lower.
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Sat 04:00 1.58 · high 3.35 · good 26.20 · good Poor
Sat 05:00 1.56 · high 3.56 · good 26.10 · good Poor
Sat 06:00 1.56 · high 2.93 · good 26.10 · good Poor
Sat 07:00 1.54 · high 3.03 · good 26.10 · good Fair
Sat 08:00 1.54 · high 2.95 · good 26.10 · good Fair
Sat 09:00 1.52 · high 3.38 · good 26.10 · good Fair
Sat 10:00 1.52 · high 3.34 · good 26.20 · good Fair
Sat 11:00 1.50 · high 3.40 · good 26.20 · good Poor
Sat 12:00 1.50 · high 3.67 · good 26.20 · good Poor
Sat 13:00 1.40 · high 4.01 · good 26.30 · good Poor
Sat 14:00 1.40 · high 4.35 · good 26.30 · good Poor
Sat 15:00 1.40 · high 3.98 · good 26.30 · good Poor
Sat 16:00 1.40 · high 3.72 · good 26.30 · good Poor
Sat 17:00 1.40 · high 3.47 · good 26.30 · good Poor
Sat 18:00 1.42 · high 2.70 · good 26.20 · good Poor
Sat 19:00 1.42 · high 2.77 · good 26.20 · good Poor
Sat 20:00 1.44 · high 2.90 · good 26.20 · good Poor
Sat 21:00 1.46 · high 3.05 · good 26.20 · good Poor
Sat 22:00 1.50 · high 3.02 · good 26.20 · good Poor
Sat 23:00 1.52 · high 2.95 · good 26.20 · good Poor
Sun 00:00 1.56 · high 2.68 · good 26.20 · good Poor
Sun 01:00 1.66 · high 2.90 · good 26.10 · good Poor
Sun 02:00 1.70 · high 2.79 · good 26.10 · good Poor
Sun 03:00 1.74 · high 2.64 · good 26.10 · good Poor
Sun 04:00 1.80 · high 2.85 · good 26.10 · good Poor
Sun 05:00 1.84 · high 2.91 · good 26.00 · good Poor
Sun 06:00 1.90 · high 3.32 · good 26.00 · good Poor
Sun 07:00 1.96 · high 3.80 · good 26.00 · good Fair
Sun 08:00 2.02 · high 4.74 · good 26.00 · good Fair
Sun 09:00 2.08 · high 5.22 · good 26.00 · good Fair
Sun 10:00 2.14 · high 5.85 · high 26.10 · good Fair
Sun 11:00 2.28 · high 5.69 · high 26.10 · good Fair
Sun 12:00 2.32 · high 5.45 · high 26.10 · good Fair
Sun 13:00 2.38 · high 6.02 · high 26.10 · good Poor
Sun 14:00 2.42 · high 6.09 · high 26.10 · good Poor
Sun 15:00 2.46 · high 6.34 · high 26.10 · good Poor
Sun 16:00 2.50 · high 6.14 · high 26.10 · good Poor
Sun 17:00 2.54 · high 5.90 · high 26.10 · good Poor
Sun 18:00 2.58 · high 5.71 · high 26.10 · good Poor
Sun 19:00 2.64 · high 5.92 · high 26.10 · good Poor
Sun 20:00 2.68 · high 5.94 · high 26.10 · good Poor
Sun 21:00 2.74 · high 5.96 · high 26.10 · good Poor
Sun 22:00 2.82 · high 5.68 · high 26.10 · good Poor
Sun 23:00 2.74 · high 5.84 · high 26.10 · good Poor
Mon 00:00 2.82 · high 5.28 · good 26.10 · good Poor
Mon 01:00 2.88 · high 5.33 · good 26.00 · good Poor
Mon 02:00 2.96 · high 5.73 · high 26.00 · good Poor
Mon 03:00 3.06 · high 5.77 · high 26.00 · good Poor
Mon 04:00 3.18 · high 5.93 · high 26.00 · good Poor
Mon 05:00 3.28 · high 6.19 · high 26.00 · good Poor
Mon 06:00 3.36 · high 6.27 · high 26.00 · good Poor
Mon 07:00 3.44 · high 6.31 · high 26.00 · good Fair
Mon 08:00 3.52 · high 7.47 · high 26.00 · good Poor
Mon 09:00 3.52 · high 7.63 · high 26.00 · good Poor
Mon 10:00 3.54 · high 7.52 · high 26.00 · good Fair
Mon 11:00 3.54 · high 7.43 · high 26.00 · good Fair
Mon 12:00 3.30 · high 6.51 · high 26.00 · good Fair
Mon 13:00 3.28 · high 6.30 · high 26.00 · good Fair
Mon 14:00 3.24 · high 6.45 · high 26.00 · good Poor
Mon 15:00 3.22 · high 6.39 · high 26.00 · good Poor
Mon 16:00 3.20 · high 6.66 · high 26.00 · good Poor
Mon 17:00 3.18 · high 6.51 · high 26.00 · good Poor
Mon 18:00 3.16 · high 6.31 · high 25.90 · good Poor
Mon 19:00 3.16 · high 6.32 · high 25.90 · good Poor
Mon 20:00 3.14 · high 6.31 · high 25.90 · good Poor
Mon 21:00 3.12 · high 6.40 · high 25.90 · good Poor
Mon 22:00 3.08 · high 6.44 · high 25.90 · good Poor
Mon 23:00 3.06 · high 5.99 · high 25.90 · good Poor
Tue 00:00 3.08 · high 6.20 · high 26.00 · good Poor
Tue 01:00 3.04 · high 5.74 · high 25.90 · good Poor
Tue 02:00 3.00 · high 5.41 · high 25.90 · good Poor
Tue 03:00 2.96 · high 5.23 · good 25.90 · good Poor