Napili Bay Snorkel Report Today

USA · Updated Thu 02:18 (HST) · Source: Snapshot

The skinny

Marginal Data updated Thu 02:18 (HST)

Napili Bay looks marginal today. The least-bad daylight window is around Thu 12:00, but waves is limiting the forecast.

Right now (forecast)

Poor · 0.0/10

Thu 02:00 (HST)

Later today

Poor · 2.1/10

Thu 12:00 (HST)

Next three days

Poor · 2.8/10

Sat 13:00 (HST)

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

Score: 2.1/10

Best time: Thu 12:00

Main risk: Waves

Best morning signal: Thu 11:00 (Poor).

Best afternoon signal: Thu 12:00 (Poor). Peak afternoon wind is about 9.3 m/s.

Email me when it is good Compare nearby spots

Best nearby spots later today

Ahihi Kinau 4.9/10 Fair · Thu 13:00 Maluaka Turtle Town 4.9/10 Fair · Thu 13:00 Ulua Mokapu 4.7/10 Fair · Thu 13:00

Weakest nearby later today

Honolua Bay Kapalua Bay Kaanapali Beach

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

Plan your visit

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

Open map

AccessNapili is a sandy crescent with reef at the edges. It is easiest when the bay is calm and visibility is good.

ParkingParking is limited near the residential bay. Use marked spaces, arrive early, and keep driveways clear.

ReservationsNo general shore-snorkel reservation is listed. Check signs for access, equipment, and beach rules.

ClosuresChoose another beach when waves break across the bay or a local warning is posted.

Marine lifeFish and turtles use the reef edges. Float above the reef and do not touch animals or coral.

Hawaii beach safety guidance

Sunrise

06:15

Sunset

18:20

Water

27.7°C

Max air

27.9°C

Sky

Cloudy

77% 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

Thursday

❌ Poor conditions

Main blocker: Waves

Friday

❌ Poor conditions

Main blocker: Waves

Saturday

❌ Poor conditions

Main blocker: Waves

Best available hours

  • Sat 13:00: Poor (0.28) · still limited by waves, wind
  • Sat 12:00: Poor (0.24) · still limited by waves, wind
  • Thu 12:00: Poor (0.21) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Wind (71 hours)
  • Tide/current (64 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Thu 05:00.

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: Fri 02:00

Fri 02:00, Fri 14:00, Sat 02:00, Sat 14:00

Nearby snorkel spot map

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

Ahihi Kinau Fair · Thu 13:00 4.9/10 Maluaka Turtle Town Fair · Thu 13:00 4.9/10 Ulua Mokapu Fair · Thu 13:00 4.7/10 Molokini Crater Fair · Thu 13:00 4.6/10 Honolua Bay Poor · Thu 12:00 3.2/10 Kapalua Bay Poor · Thu 12:00 3.2/10 Kaanapali Beach Poor · Thu 07:00 3.0/10 Kaanapali Black Rock Poor · Thu 07:00 2.9/10

Forecast spot map

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

Ahihi Kinau Maluaka Turtle Town Ulua Mokapu Molokini Crater Honolua Bay Kapalua Bay Kaanapali Beach Kaanapali Black Rock
  1. Ahihi Kinau
  2. Maluaka Turtle Town
  3. Ulua Mokapu
  4. Molokini Crater
  5. Honolua Bay
  6. Kapalua Bay
  7. Kaanapali Beach
  8. Kaanapali Black Rock

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

Nearby alternatives in USA

Kapalua Bay

0 km away

❌ Poor

Honolua Bay

3 km away

❌ Poor

Kaanapali Beach

9 km away

❌ Poor

Kaanapali Black Rock

9 km away

❌ Poor

Advanced forecast data

Viewing historical data

Mon 02:00 – Thu 02:00 (HST)

Previous day Yesterday Next day Live

Snorkel Score (selected 24h)

Best snorkel score is 0.34 around Mon 07:00; 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.

0/24 sampled hours stay at or below 0.36m (range 1.06m to 1.24m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.76 to 7.4m/s).

Tides range from 0.21m to 0.77m; 2 of 24 hours are in or near peak slack windows.

72-hour historical 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
Mon 02:00 1.06 · high 6.88 · high 27.30 · good Poor
Mon 03:00 1.08 · high 6.81 · high 27.30 · good Poor
Mon 04:00 1.08 · high 6.76 · high 27.20 · good Poor
Mon 05:00 1.10 · high 6.86 · high 27.20 · good Poor
Mon 06:00 1.10 · high 6.96 · high 27.20 · good Poor
Mon 07:00 1.10 · high 7.03 · high 27.20 · good Poor
Mon 08:00 1.10 · high 7.33 · high 27.20 · good Poor
Mon 09:00 1.12 · high 7.32 · high 27.20 · good Poor
Mon 10:00 1.12 · high 7.23 · high 27.30 · good Poor
Mon 11:00 1.14 · high 7.00 · high 27.30 · good Poor
Mon 12:00 1.16 · high 7.09 · high 27.30 · good Poor
Mon 13:00 1.16 · high 7.26 · high 27.40 · good Poor
Mon 14:00 1.22 · high 7.40 · high 27.40 · good Poor
Mon 15:00 1.22 · high 7.32 · high 27.40 · good Poor
Mon 16:00 1.24 · high 7.21 · high 27.40 · good Poor
Mon 17:00 1.24 · high 7.29 · high 27.40 · good Poor
Mon 18:00 1.24 · high 6.94 · high 27.30 · good Poor
Mon 19:00 1.24 · high 6.99 · high 27.30 · good Poor
Mon 20:00 1.24 · high 7.09 · high 27.30 · good Poor
Mon 21:00 1.22 · high 7.29 · high 27.30 · good Poor
Mon 22:00 1.22 · high 7.24 · high 27.30 · good Poor
Mon 23:00 1.20 · high 7.15 · high 27.30 · good Poor
Tue 00:00 1.18 · high 7.03 · high 27.30 · good Poor
Tue 01:00 1.18 · high 6.88 · high 27.20 · good Poor
Tue 02:00 1.16 · high 5.99 · high 27.20 · good Poor
Tue 03:00 1.14 · high 6.22 · high 27.20 · good Poor
Tue 04:00 1.14 · high 6.75 · high 27.20 · good Poor
Tue 05:00 1.12 · high 6.34 · high 27.20 · good Poor
Tue 06:00 1.12 · high 6.24 · high 27.20 · good Poor
Tue 07:00 1.10 · high 6.42 · high 27.20 · good Poor
Tue 08:00 1.10 · high 6.56 · high 27.20 · good Poor
Tue 09:00 1.12 · high 7.27 · high 27.20 · good Poor
Tue 10:00 1.18 · high 7.10 · high 27.20 · good Poor
Tue 11:00 1.20 · high 7.41 · high 27.30 · good Poor
Tue 12:00 1.22 · high 7.31 · high 27.30 · good Poor
Tue 13:00 1.24 · high 7.32 · high 27.40 · good Poor
Tue 14:00 1.26 · high 6.53 · high 27.40 · good Poor
Tue 15:00 1.26 · high 6.66 · high 27.40 · good Poor
Tue 16:00 1.26 · high 6.49 · high 27.40 · good Poor
Tue 17:00 1.26 · high 6.44 · high 27.30 · good Poor
Tue 18:00 1.26 · high 6.01 · high 27.30 · good Poor
Tue 19:00 1.24 · high 6.15 · high 27.30 · good Poor
Tue 20:00 1.24 · high 6.57 · high 27.30 · good Poor
Tue 21:00 1.22 · high 6.54 · high 27.30 · good Poor
Tue 22:00 1.22 · high 6.54 · high 27.20 · good Poor
Tue 23:00 1.20 · high 6.21 · high 27.20 · good Poor
Wed 00:00 1.18 · high 6.13 · high 27.20 · good Poor
Wed 01:00 1.10 · high 6.14 · high 27.20 · good Poor
Wed 02:00 1.10 · high 6.17 · high 27.20 · good Poor
Wed 03:00 1.08 · high 6.03 · high 27.20 · good Poor
Wed 04:00 1.08 · high 6.19 · high 27.20 · good Poor
Wed 05:00 1.06 · high 6.22 · high 27.20 · good Poor
Wed 06:00 1.08 · high 6.25 · high 27.20 · good Poor
Wed 07:00 1.08 · high 6.44 · high 27.20 · good Fair
Wed 08:00 1.10 · high 7.05 · high 27.20 · good Poor
Wed 09:00 1.12 · high 7.42 · high 27.20 · good Poor
Wed 10:00 1.22 · high 7.18 · high 27.30 · good Poor
Wed 11:00 1.24 · high 6.89 · high 27.30 · good Poor
Wed 12:00 1.26 · high 7.68 · high 27.40 · good Poor
Wed 13:00 1.28 · high 7.51 · high 27.40 · good Fair
Wed 14:00 1.30 · high 7.56 · high 27.40 · good Poor
Wed 15:00 1.32 · high 7.30 · high 27.40 · good Poor
Wed 16:00 1.32 · high 7.42 · high 27.40 · good Poor
Wed 17:00 1.34 · high 7.51 · high 27.40 · good Poor
Wed 18:00 1.34 · high 7.53 · high 27.40 · good Poor
Wed 19:00 1.34 · high 8.00 · high 27.40 · good Poor
Wed 20:00 1.34 · high 8.99 · high 27.40 · good Poor
Wed 21:00 1.36 · high 9.03 · high 27.40 · good Poor
Wed 22:00 1.36 · high 9.24 · high 27.30 · good Poor
Wed 23:00 1.38 · high 9.32 · high 27.30 · good Poor
Thu 00:00 1.38 · high 9.20 · high 27.30 · good Poor
Thu 01:00 1.44 · high 8.53 · high 27.30 · good Poor