SnorkelForecast.com

Big Island Snorkel Report Today

USA · Updated Wed 19:54 (HST) · Source: Snapshot

The skinny

Marginal Report Wed 12:45

Big Island looks marginal today. The least-bad daylight window is around Sat 08:00, but waves is limiting the forecast.

Score: 0.0/10

Best time: Sat 08:00

Main risk: Waves

No useful morning window is showing yet.

Best afternoon signal: Wed 13:00 (Poor). Peak afternoon wind is about 5.5 m/s.

Email me when it is good Compare nearby spots Tours & water activities

Best nearby spots

Kealakekua Bay 5.3/10 Fair · Fri 20:00 Two Step Honaunau 5.3/10 Fair · Fri 20:00 Anaehoomalu Bay 5.2/10 Fair · Thu 19:00

Local beach intelligence

AreaHawaii Island

DifficultyVaries by beach

Best timeMorning

ExposureKona coast is often calmer; east side is windier

ShoreIsland hub

Sunrise

06:02

Sunset

18:52

Water

-

Max air

16.7°C

Sky

Clear

6% 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

❌ Poor conditions

Main blocker: Waves

Friday

❌ Poor conditions

Main blocker: Waves

Best available hours

  • Sat 18:00: Poor (0.00) · still limited by waves, wind
  • Sat 17:00: Poor (0.00) · still limited by waves, wind
  • Fri 23:00: Poor (0.00) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (68 hours)
  • Sea temperature (68 hours)
  • Darkness (51 hours)

Jellyfish drift risk

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

Low · 6/100

Low drift risk now.

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.

Bookable snorkel tours near Big Island

Prices and availability from Viator. Check conditions before you book.

We may earn a commission at no extra cost to you.

Manta Ray Night Snorkel at Kona, Big Island

Manta Ray Night Snorkel at Kona, Big Island

4.7/5 2007 reviews 1h 30m
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Big Island Manta Ray Night Snorkel

Big Island Manta Ray Night Snorkel

4.8/5 6224 reviews 2h 30m
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Another fun day at captain cook reef

Big Island: Captain Cook Snorkel On A Power Catamaran With Lunch

4.9/5 2473 reviews 4h
From USD 85.00 Check availability

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Big Island: Manta Ray Night Snorkeling Adventure in Kailua-Kona

Big Island: Manta Ray Night Snorkeling Adventure in Kailua-Kona

4.9/5 806 reviews 2h 30m
From USD 75.00 Check availability

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Big Island Manta Ray Night Snorkel Adventure

Big Island Manta Ray Night Snorkel Adventure

4.8/5 470 reviews 1h 25m
From USD 99.00 Check availability

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Manta Ray Night Snorkel Tour in Kailua-Kona, Big Island

Manta Ray Night Snorkel Tour in Kailua-Kona, Big Island

4.8/5 466 reviews 2h
From USD 125.00 Check availability

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Nearby snorkel spot map

Compare nearby spots by score, forecast window and exposure before choosing a beach.

Kealakekua Bay Fair · Fri 20:00 5.3/10 Two Step Honaunau Fair · Fri 20:00 5.3/10 Anaehoomalu Bay Fair · Thu 19:00 5.2/10 Kahaluu Beach Park Fair · Thu 18:00 5.1/10

Forecast spot map

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

Kealakekua Bay Two Step Honaunau Anaehoomalu Bay Kahaluu Beach Park
  1. Kealakekua Bay
  2. Two Step Honaunau
  3. Anaehoomalu Bay
  4. Kahaluu Beach Park

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

Nearby alternatives in USA

Kealakekua Bay

29 km away

⚠️ Fair

Two Step Honaunau

29 km away

⚠️ Fair

Kahaluu Beach Park

32 km away

❌ Poor

Anaehoomalu Bay

47 km away

⚠️ Fair

Advanced forecast data

Viewing current forecast

Wed 22:00 – Sat 22:00 (HST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.0 around Wed 13:00; 0 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.

No wave-height trend data is available for the next 24 hours yet.

Wind is at or below 5.4m/s in 19/24 sampled hours (range 2.1 to 6.23m/s).

No tide trend data is available for the next 24 hours yet.

72-hour forecast overview
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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
Wed 23:00 · high 5.53 · high · out of range Poor
Thu 00:00 · high 6.23 · high · out of range Poor
Thu 01:00 · high 5.46 · high · out of range Poor
Thu 02:00 · high 5.28 · good · out of range Poor
Thu 03:00 · high 4.73 · good · out of range Poor
Thu 04:00 · high 4.67 · good · out of range Poor
Thu 05:00 · high 2.87 · good · out of range Poor
Thu 06:00 · high 2.37 · good · out of range Poor
Thu 07:00 · high 2.10 · good · out of range Poor
Thu 08:00 · high 2.20 · good · out of range Poor
Thu 09:00 · high 2.31 · good · out of range Poor
Thu 10:00 · high 2.14 · good · out of range Poor
Thu 11:00 · high 2.16 · good · out of range Poor
Thu 12:00 · high 2.69 · good · out of range Poor
Thu 13:00 · high 2.65 · good · out of range Poor
Thu 14:00 · high 2.62 · good · out of range Poor
Thu 15:00 · high 3.08 · good · out of range Poor
Thu 16:00 · high 3.29 · good · out of range Poor
Thu 17:00 · high 3.52 · good · out of range Poor
Thu 18:00 · high 3.81 · good · out of range Poor
Thu 19:00 · high 4.79 · good · out of range Poor
Thu 20:00 · high 5.26 · good · out of range Poor
Thu 21:00 · high 5.89 · high · out of range Poor
Thu 22:00 · high 6.11 · high · out of range Poor
Thu 23:00 · high 6.45 · high · out of range Poor
Fri 00:00 · high 5.97 · high · out of range Poor
Fri 01:00 · high 5.81 · high · out of range Poor
Fri 02:00 · high 5.70 · high · out of range Poor
Fri 03:00 · high 5.91 · high · out of range Poor
Fri 04:00 · high 6.16 · high · out of range Poor
Fri 05:00 · high 6.85 · high · out of range Poor
Fri 06:00 · high 8.19 · high · out of range Poor
Fri 07:00 · high 9.14 · high · out of range Poor
Fri 08:00 · high 9.01 · high · out of range Poor
Fri 09:00 · high 8.90 · high · out of range Poor
Fri 10:00 · high 8.10 · high · out of range Poor
Fri 11:00 · high 6.70 · high · out of range Poor
Fri 12:00 · high 5.92 · high · out of range Poor
Fri 13:00 · high 5.67 · high · out of range Poor
Fri 14:00 · high 5.77 · high · out of range Poor
Fri 15:00 · high 6.53 · high · out of range Poor
Fri 16:00 · high 6.62 · high · out of range Poor
Fri 17:00 · high 6.31 · high · out of range Poor
Fri 18:00 · high 6.91 · high · out of range Poor
Fri 19:00 · high 7.99 · high · out of range Poor
Fri 20:00 · high 9.09 · high · out of range Poor
Fri 21:00 · high 8.02 · high · out of range Poor
Fri 22:00 · high 7.80 · high · out of range Poor
Fri 23:00 · high 6.90 · high · out of range Poor
Sat 00:00 · high 7.30 · high · out of range Poor
Sat 01:00 · high 9.52 · high · out of range Poor
Sat 02:00 · high 10.86 · high · out of range Poor
Sat 03:00 · high 11.70 · high · out of range Poor
Sat 04:00 · high 9.80 · high · out of range Poor
Sat 05:00 · high 11.20 · high · out of range Poor
Sat 06:00 · high 12.36 · high · out of range Poor
Sat 07:00 · high 12.13 · high · out of range Poor
Sat 08:00 · high 10.94 · high · out of range Poor
Sat 09:00 · high 9.24 · high · out of range Poor
Sat 10:00 · high 8.54 · high · out of range Poor
Sat 11:00 · high 10.35 · high · out of range Poor
Sat 12:00 · high 9.80 · high · out of range Poor
Sat 13:00 · high 14.17 · high · out of range Poor
Sat 14:00 · high 13.58 · high · out of range Poor
Sat 15:00 · high 14.20 · high · out of range Poor
Sat 16:00 · high 14.04 · high · out of range Poor
Sat 17:00 · high 14.17 · high · out of range Poor
Sat 18:00 · high 14.39 · high · out of range Poor