Napili Bay Snorkel Report Today

USA · Updated Tue 04:13 (HST) · Source: Snapshot · Showing fallback/stale data

The skinny

Marginal Report Tue 21:17

Napili Bay looks marginal today. The least-bad daylight window is around Thu 06:00, but waves is limiting the forecast.

Score: 3.2/10

Best time: Thu 06:00

Main risk: Waves

No useful morning window is showing yet.

No useful afternoon window is showing yet.

Sunrise

05:56

Sunset

19:09

Water

27.1°C

Max air

25.2°C

Sky

Cloudy

100% cloud

No safe window in the next 72 hours

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

3-day planner

Tuesday

poor conditions

Main blocker: Waves

Wednesday

poor conditions

Main blocker: Waves

Thursday

⚠️ fair conditions

Main blocker: Waves

Best available hours

  • Thu 16:00 — Fair (0.37) · still limited by waves, wind
  • Thu 17:00 — Fair (0.36) · still limited by waves, wind
  • Thu 22:00 — Poor (0.34) · still limited by waves, wind

Why this verdict

Main blockers across the next 72 hours:

  • Waves (44 hours)
  • Wind (44 hours)
  • Tide/current (44 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

Thu 22:00

Tours and water activities near Napili Bay

Local operators found via Tripadvisor. Check conditions before you book.

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Nearby snorkel spot map

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

Nearby alternatives in USA

Advanced forecast data

Viewing historical data

Tue 07:00 – Fri 07:00 (HST)

Snorkel Score (selected 24h)

Best snorkel score is 0.36 around Tue 13:00; 3 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 1.3m to 1.4m).

Wind is at or below 5.4m/s in 0/24 sampled hours (range 7.1 to 8.09m/s).

Tides range from 0.28m to 0.66m; 1 of 24 hours are in or near peak slack windows.

72-hour historical overview
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
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
poor ❌ Limited
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
fair ⚠️ Fair
fair ⚠️ Fair
fair ⚠️ Fair
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
poor ❌ Limited
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 and safety gate (outside daylight scores lower).
Detailed hourly data table
Time Wave (m) Wind (m/s) Sea temp (°C) Status
Tue 07:00 1.38 · high 7.81 · high 26.70 · good poor
Tue 08:00 1.38 · high 8.09 · high 26.60 · good poor
Tue 09:00 1.36 · high 8.04 · high 26.60 · good poor
Tue 10:00 1.36 · high 7.77 · high 26.60 · good poor
Tue 11:00 1.34 · high 7.70 · high 26.60 · good poor
Tue 12:00 1.34 · high 7.51 · high 26.60 · good poor
Tue 13:00 1.34 · high 7.77 · high 26.60 · good poor
Tue 14:00 1.32 · high 7.40 · high 26.50 · good poor
Tue 15:00 1.32 · high 7.52 · high 26.50 · good poor
Tue 16:00 1.34 · high 7.45 · high 26.50 · good poor
Tue 17:00 1.34 · high 7.77 · high 26.50 · good poor
Tue 18:00 1.36 · high 8.02 · high 26.50 · good poor
Tue 19:00 1.38 · high 7.97 · high 26.50 · good poor
Tue 20:00 1.38 · high 7.88 · high 26.60 · good poor
Tue 21:00 1.40 · high 7.76 · high 26.60 · good fair
Tue 22:00 1.40 · high 7.70 · high 26.60 · good fair
Tue 23:00 1.40 · high 7.50 · high 26.70 · good fair
Wed 00:00 1.40 · high 7.54 · high 26.70 · good poor
Wed 01:00 1.38 · high 7.52 · high 26.70 · good poor
Wed 02:00 1.38 · high 7.45 · high 26.70 · good poor
Wed 03:00 1.36 · high 7.11 · high 26.70 · good poor
Wed 04:00 1.34 · high 7.11 · high 26.70 · good poor
Wed 05:00 1.32 · high 7.10 · high 26.60 · good poor
Wed 06:00 1.30 · high 7.34 · high 26.60 · good poor
Wed 07:00 1.28 · high 7.81 · high 26.60 · good poor
Wed 08:00 1.26 · high 7.36 · high 26.60 · good poor
Wed 09:00 1.24 · high 7.21 · high 26.60 · good poor
Wed 10:00 1.22 · high 7.25 · high 26.60 · good poor
Wed 11:00 1.18 · high 7.27 · high 26.50 · good poor
Wed 12:00 1.16 · high 7.29 · high 26.50 · good poor
Wed 13:00 1.16 · high 7.17 · high 26.50 · good poor
Wed 14:00 1.14 · high 6.86 · high 26.50 · good poor
Wed 15:00 1.14 · high 6.53 · high 26.50 · good poor
Wed 16:00 1.14 · high 6.65 · high 26.50 · good fair
Wed 17:00 1.16 · high 7.07 · high 26.50 · good fair
Wed 18:00 1.16 · high 7.53 · high 26.50 · good fair
Wed 19:00 1.18 · high 7.24 · high 26.50 · good fair
Wed 20:00 1.18 · high 7.32 · high 26.60 · good fair
Wed 21:00 1.20 · high 7.27 · high 26.60 · good fair
Wed 22:00 1.20 · high 7.52 · high 26.70 · good fair
Wed 23:00 1.22 · high 7.45 · high 26.70 · good poor
Thu 00:00 1.22 · high 7.31 · high 26.70 · good poor
Thu 01:00 1.22 · high 7.05 · high 26.70 · good poor
Thu 02:00 1.20 · high 6.31 · high 26.70 · good poor
Thu 03:00 1.20 · high 6.11 · high 26.70 · good poor
Thu 04:00 1.18 · high 6.47 · high 26.70 · good poor
Thu 05:00 1.18 · high 6.50 · high 26.70 · good poor
Thu 06:00 1.16 · high 6.47 · high 26.70 · good poor
Thu 07:00 1.16 · high 6.83 · high 26.70 · good poor
Thu 08:00 1.16 · high 7.02 · high 26.60 · good poor
Thu 09:00 1.30 · high 6.05 · high 26.60 · good poor
Thu 10:00 1.30 · high 6.01 · high 26.60 · good poor
Thu 11:00 1.32 · high 5.68 · high 26.60 · good poor
Thu 12:00 1.32 · high 5.69 · high 26.60 · good poor
Thu 13:00 1.32 · high 5.43 · high 26.60 · good poor
Thu 14:00 1.30 · high 5.43 · high 26.60 · good poor
Thu 15:00 1.30 · high 5.74 · high 26.50 · good poor
Thu 16:00 1.30 · high 6.12 · high 26.50 · good fair
Thu 17:00 1.30 · high 6.50 · high 26.50 · good poor
Thu 18:00 1.30 · high 6.74 · high 26.50 · good fair
Thu 19:00 1.30 · high 6.88 · high 26.50 · good poor
Thu 20:00 1.32 · high 7.50 · high 26.60 · good poor
Thu 21:00 1.32 · high 7.63 · high 26.60 · good fair
Thu 22:00 1.32 · high 7.74 · high 26.60 · good fair
Thu 23:00 1.32 · high 7.74 · high 26.70 · good fair
Fri 00:00 1.32 · high 7.75 · high 26.70 · good poor
Fri 01:00 1.30 · high 7.73 · high 26.70 · good poor
Fri 02:00 1.30 · high 7.59 · high 26.70 · good poor
Fri 03:00 1.28 · high 7.58 · high 26.70 · good poor
Fri 04:00 1.28 · high 7.35 · high 26.70 · good poor
Fri 05:00 1.26 · high 7.32 · high 26.70 · good poor
Fri 06:00 1.26 · high 7.64 · high 26.70 · good poor