SnorkelForecast.com

Napili Bay Snorkel Report Today

USA · Updated Sat 09:00 (HST) · Source: Snapshot

The skinny

Marginal Data updated Sat 09:00 (HST)

Napili Bay looks marginal today. The least-bad daylight window is around Sat 11:00, but waves is limiting the forecast.

Right now (forecast)

Fair · 4.5/10

Sat 09:00 (HST)

Later today

Fair · 4.9/10

Sat 11:00 (HST)

Next three days

Fair · 4.9/10

Tue 07:00 (HST)

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

Score: 4.9/10

Best time: Sat 11:00

Main risk: Waves

Best morning signal: Sat 11:00 (Fair).

Best afternoon signal: Sat 12:00 (Poor). Peak afternoon wind is about 5.2 m/s.

Email me when it is good Compare nearby spots

Best nearby spots later today

Kaanapali Black Rock 5.5/10 Good · Sat 10:00

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

06:13

Sunset

18:31

Water

27.4°C

Max air

29.3°C

Sky

Clear

0% 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

Saturday

⚠️ Fair conditions

Main blocker: Waves

Sunday

⚠️ Fair conditions

Main blocker: Waves

Monday

⚠️ Fair conditions

Main blocker: Waves

Best available hours

  • Tue 07:00: Fair (0.49) · still limited by waves, tide/current
  • Sat 11:00: Fair (0.49) · still limited by waves, tide/current
  • Tue 08:00: Fair (0.48) · still limited by waves, tide/current

Why this verdict

Main blockers across the next 72 hours:

  • Waves (71 hours)
  • Tide/current (71 hours)
  • Darkness (51 hours)

Jellyfish drift risk

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

Low · 34/100

Low peak drift risk around Sat 12:00.

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: Sun 04:00

Sat 15:00, Sun 04:00, Tue 05:00

Nearby snorkel spot map

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

Kaanapali Black Rock Good · Sat 10:00 5.5/10 Kaanapali Beach Fair · Sat 10:00 4.9/10 Molokini Crater Fair · Sat 10:00 4.6/10 Ulua Mokapu Fair · Sat 10:00 4.5/10 Honolua Bay Fair · Sat 10:00 4.4/10 Kapalua Bay Fair · Sat 10:00 4.4/10 Ahihi Kinau Fair · Sat 10:00 4.2/10 Maluaka Turtle Town Fair · Sat 10:00 4.2/10

Forecast spot map

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

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

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

⚠️ Fair

Honolua Bay

3 km away

⚠️ Fair

Kaanapali Beach

9 km away

✅ Good

Kaanapali Black Rock

9 km away

✅ Good

Advanced forecast data

Viewing current forecast

Sat 09:00 – Tue 09:00 (HST)

Previous day Yesterday

Snorkel Score (next 24h)

Best snorkel score is 0.49 around Sat 11:00; 5 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 0.8m to 0.86m).

Wind is at or below 5.4m/s in 24/24 sampled hours (range 3.39 to 5.21m/s).

Tides range from 0.21m to 0.82m; 2 of 24 hours are in or near peak slack windows.

72-hour forecast overview
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
Fair ⚠️ Fair
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Poor ❌ Limited
Fair ⚠️ Fair
Fair ⚠️ Fair
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 10:00 0.82 · high 4.30 · good 27.40 · good Fair
Sat 11:00 0.82 · high 4.51 · good 27.50 · good Fair
Sat 12:00 0.84 · high 4.77 · good 27.50 · good Poor
Sat 13:00 0.84 · high 5.21 · good 27.50 · good Poor
Sat 14:00 0.86 · high 5.02 · good 27.50 · good Poor
Sat 15:00 0.86 · high 4.74 · good 27.50 · good Poor
Sat 16:00 0.86 · high 4.84 · good 27.50 · good Poor
Sat 17:00 0.86 · high 4.74 · good 27.40 · good Poor
Sat 18:00 0.86 · high 4.43 · good 27.40 · good Poor
Sat 19:00 0.84 · high 3.94 · good 27.40 · good Poor
Sat 20:00 0.84 · high 3.89 · good 27.30 · good Poor
Sat 21:00 0.84 · high 4.12 · good 27.30 · good Poor
Sat 22:00 0.82 · high 4.50 · good 27.30 · good Poor
Sat 23:00 0.82 · high 4.54 · good 27.30 · good Poor
Sun 00:00 0.82 · high 4.05 · good 27.20 · good Poor
Sun 01:00 0.82 · high 3.54 · good 27.20 · good Poor
Sun 02:00 0.82 · high 3.39 · good 27.20 · good Poor
Sun 03:00 0.82 · high 3.42 · good 27.20 · good Poor
Sun 04:00 0.82 · high 3.78 · good 27.20 · good Poor
Sun 05:00 0.82 · high 3.86 · good 27.20 · good Poor
Sun 06:00 0.82 · high 4.11 · good 27.20 · good Poor
Sun 07:00 0.80 · high 4.47 · good 27.30 · good Fair
Sun 08:00 0.80 · high 4.96 · good 27.30 · good Fair
Sun 09:00 0.80 · high 5.09 · good 27.30 · good Fair
Sun 10:00 0.82 · high 5.12 · good 27.30 · good Fair
Sun 11:00 0.82 · high 4.99 · good 27.40 · good Fair
Sun 12:00 0.82 · high 5.07 · good 27.40 · good Fair
Sun 13:00 0.84 · high 5.34 · good 27.40 · good Fair
Sun 14:00 0.84 · high 5.55 · high 27.40 · good Poor
Sun 15:00 0.82 · high 5.66 · high 27.40 · good Poor
Sun 16:00 0.82 · high 5.56 · high 27.40 · good Poor
Sun 17:00 0.80 · high 5.23 · good 27.40 · good Poor
Sun 18:00 0.78 · high 4.94 · good 27.40 · good Poor
Sun 19:00 0.78 · high 4.79 · good 27.30 · good Poor
Sun 20:00 0.76 · high 4.61 · good 27.30 · good Poor
Sun 21:00 0.74 · high 4.79 · good 27.30 · good Poor
Sun 22:00 0.74 · high 5.11 · good 27.30 · good Poor
Sun 23:00 0.72 · high 4.83 · good 27.30 · good Poor
Mon 00:00 0.72 · high 4.85 · good 27.30 · good Poor
Mon 01:00 0.72 · high 4.70 · good 27.20 · good Poor
Mon 02:00 0.72 · high 4.60 · good 27.20 · good Poor
Mon 03:00 0.70 · high 4.88 · good 27.20 · good Poor
Mon 04:00 0.68 · high 4.94 · good 27.20 · good Poor
Mon 05:00 0.66 · high 4.72 · good 27.20 · good Poor
Mon 06:00 0.66 · high 4.72 · good 27.20 · good Poor
Mon 07:00 0.68 · high 4.85 · good 27.20 · good Fair
Mon 08:00 0.68 · high 5.06 · good 27.20 · good Fair
Mon 09:00 0.68 · high 5.09 · good 27.30 · good Fair
Mon 10:00 0.70 · high 4.91 · good 27.30 · good Poor
Mon 11:00 0.70 · high 4.79 · good 27.40 · good Poor
Mon 12:00 0.72 · high 5.06 · good 27.40 · good Poor
Mon 13:00 0.74 · high 5.50 · high 27.40 · good Poor
Mon 14:00 0.76 · high 5.77 · high 27.50 · good Poor
Mon 15:00 0.74 · high 5.97 · high 27.50 · good Poor
Mon 16:00 0.74 · high 5.63 · high 27.50 · good Poor
Mon 17:00 0.72 · high 5.11 · good 27.50 · good Poor
Mon 18:00 0.70 · high 4.77 · good 27.40 · good Poor
Mon 19:00 0.68 · high 4.44 · good 27.40 · good Poor
Mon 20:00 0.66 · high 4.48 · good 27.40 · good Poor
Mon 21:00 0.66 · high 4.43 · good 27.40 · good Poor
Mon 22:00 0.66 · high 4.49 · good 27.40 · good Poor
Mon 23:00 0.66 · high 4.75 · good 27.40 · good Poor
Tue 00:00 0.66 · high 4.72 · good 27.40 · good Poor
Tue 01:00 0.66 · high 4.56 · good 27.40 · good Poor
Tue 02:00 0.66 · high 4.14 · good 27.40 · good Poor
Tue 03:00 0.64 · high 3.79 · good 27.40 · good Poor
Tue 04:00 0.64 · high 3.74 · good 27.40 · good Poor
Tue 05:00 0.62 · high 3.81 · good 27.40 · good Poor
Tue 06:00 0.62 · high 3.98 · good 27.40 · good Poor
Tue 07:00 0.60 · high 4.25 · good 27.40 · good Fair
Tue 08:00 0.60 · high 4.70 · good 27.40 · good Fair