Thursday
⚠️ Fair conditions
Main blocker: Waves
USA · Updated Thu 09:42 (HST) · Source: Snapshot
The skinny
Marginal Report Wed 23:54Ulua Mokapu looks marginal today. The least-bad daylight window is around Fri 07:00, but waves is limiting the forecast.
Score: 4.8/10
Best time: Fri 07:00
Main risk: Waves
No useful morning window is showing yet.
No useful afternoon window is showing yet.
Best nearby spots
Read the Maui snorkeling guide for coast, access and best-month guidance.
These notes help with planning. Rules and closures can change.
AccessUlua and Mokapu are adjacent sandy shore entries. Start near shore and move out only when the wind and swell stay low.
ParkingUse the public beach parking and follow resort access signs. Do not block the road or emergency lanes.
ReservationsNo general shore-snorkel reservation is listed. Rentals and guided trips may require separate booking.
ClosuresMove to a sheltered beach when wind, surge, or poor visibility makes the reef hard to read.
Marine lifeReef fish and turtles can be seen on calm days. Keep a hands-off distance from animals and coral.
No good model window in the next 72 hours
Use the best-available section for the least-bad times.
Thursday
⚠️ Fair conditions
Main blocker: Waves
Friday
⚠️ Fair conditions
Main blocker: Waves
Saturday
❌ Poor conditions
Main blocker: Waves
Main blockers across the next 72 hours:
Drift estimate from wind, swell, current and warm water.
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.
Next early morning high tide: Thu 14:00
Thu 14:00, Fri 02:00, Fri 14:00, Sat 03:00, Sat 15:00, Sun 03:00
Compare nearby spots by score, forecast window and exposure before choosing a beach.
Use the map to see where the compared spots sit. Open a card for the hourly forecast.
This is a location diagram, not a marine chart. Check the shore and local signs in person.
Viewing historical data
Mon 09:00 – Thu 09:00 (HST)
Best snorkel score is 0.5 around Mon 08:00; 7 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.
Tap a chart to load just that series.
0/24 sampled hours stay at or below 0.36m (range 0.92m to 1.04m).
Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.49 to 3.58m/s).
Tides range from 0.16m to 1.05m; 2 of 24 hours are in or near peak slack windows.
We score each hour from 0 to 1 using daylight and these weighted components:
| Time | Wave (m) | Wind (m/s) | Sea temp (°C) | Status |
|---|---|---|---|---|
| Mon 09:00 | 1.00 · high | 2.15 · good | 27.40 · good | Poor |
| Mon 10:00 | 1.02 · high | 2.35 · good | 27.40 · good | Poor |
| Mon 11:00 | 0.92 · high | 2.27 · good | 27.40 · good | Poor |
| Mon 12:00 | 0.94 · high | 1.92 · good | 27.40 · good | Poor |
| Mon 13:00 | 0.96 · high | 1.92 · good | 27.30 · good | Poor |
| Mon 14:00 | 0.96 · high | 1.99 · good | 27.30 · good | Poor |
| Mon 15:00 | 0.98 · high | 1.98 · good | 27.30 · good | Poor |
| Mon 16:00 | 1.00 · high | 1.49 · good | 27.30 · good | Poor |
| Mon 17:00 | 1.00 · high | 1.79 · good | 27.30 · good | Fair |
| Mon 18:00 | 1.02 · high | 1.99 · good | 27.30 · good | Fair |
| Mon 19:00 | 1.02 · high | 2.16 · good | 27.30 · good | Fair |
| Mon 20:00 | 1.04 · high | 2.94 · good | 27.40 · good | Fair |
| Mon 21:00 | 1.04 · high | 3.26 · good | 27.50 · good | Fair |
| Mon 22:00 | 1.04 · high | 3.58 · good | 27.60 · good | Fair |
| Mon 23:00 | 1.04 · high | 3.36 · good | 27.70 · good | Fair |
| Tue 00:00 | 1.04 · high | 3.11 · good | 27.70 · good | Poor |
| Tue 01:00 | 1.04 · high | 3.02 · good | 27.70 · good | Poor |
| Tue 02:00 | 1.04 · high | 3.02 · good | 27.70 · good | Poor |
| Tue 03:00 | 1.04 · high | 3.20 · good | 27.70 · good | Poor |
| Tue 04:00 | 1.02 · high | 2.86 · good | 27.70 · good | Poor |
| Tue 05:00 | 1.00 · high | 2.56 · good | 27.70 · good | Poor |
| Tue 06:00 | 0.98 · high | 1.97 · good | 27.60 · good | Poor |
| Tue 07:00 | 0.98 · high | 2.20 · good | 27.60 · good | Poor |
| Tue 08:00 | 0.98 · high | 2.37 · good | 27.60 · good | Poor |
| Tue 09:00 | 0.98 · high | 2.24 · good | 27.60 · good | Poor |
| Tue 10:00 | 0.98 · high | 2.24 · good | 27.50 · good | Poor |
| Tue 11:00 | 1.00 · high | 2.26 · good | 27.40 · good | Poor |
| Tue 12:00 | 1.02 · high | 2.22 · good | 27.40 · good | Poor |
| Tue 13:00 | 1.02 · high | 2.14 · good | 27.40 · good | Poor |
| Tue 14:00 | 1.00 · high | 2.11 · good | 27.40 · good | Poor |
| Tue 15:00 | 1.00 · high | 2.03 · good | 27.40 · good | Poor |
| Tue 16:00 | 1.00 · high | 2.21 · good | 27.40 · good | Poor |
| Tue 17:00 | 0.98 · high | 2.51 · good | 27.40 · good | Fair |
| Tue 18:00 | 0.98 · high | 2.22 · good | 27.40 · good | Fair |
| Tue 19:00 | 0.98 · high | 2.91 · good | 27.40 · good | Fair |
| Tue 20:00 | 1.00 · high | 3.72 · good | 27.50 · good | Fair |
| Tue 21:00 | 1.00 · high | 3.29 · good | 27.60 · good | Fair |
| Tue 22:00 | 1.02 · high | 3.06 · good | 27.70 · good | Poor |
| Tue 23:00 | 1.02 · high | 2.65 · good | 27.80 · good | Fair |
| Wed 00:00 | 1.04 · high | 2.65 · good | 27.80 · good | Poor |
| Wed 01:00 | 1.04 · high | 2.73 · good | 27.80 · good | Poor |
| Wed 02:00 | 1.04 · high | 2.46 · good | 27.80 · good | Poor |
| Wed 03:00 | 1.04 · high | 2.19 · good | 27.80 · good | Poor |
| Wed 04:00 | 1.04 · high | 2.22 · good | 27.70 · good | Poor |
| Wed 05:00 | 1.04 · high | 2.06 · good | 27.70 · good | Poor |
| Wed 06:00 | 1.04 · high | 1.85 · good | 27.60 · good | Poor |
| Wed 07:00 | 1.04 · high | 1.20 · good | 27.60 · good | Poor |
| Wed 08:00 | 1.06 · high | 0.96 · good | 27.60 · good | Poor |
| Wed 09:00 | 1.06 · high | 1.09 · good | 27.50 · good | Poor |
| Wed 10:00 | 1.06 · high | 0.61 · good | 27.50 · good | Poor |
| Wed 11:00 | 1.06 · high | 0.32 · good | 27.50 · good | Poor |
| Wed 12:00 | 1.06 · high | 1.03 · good | 27.40 · good | Poor |
| Wed 13:00 | 1.06 · high | 1.83 · good | 27.40 · good | Poor |
| Wed 14:00 | 1.06 · high | 1.90 · good | 27.40 · good | Poor |
| Wed 15:00 | 1.06 · high | 1.88 · good | 27.30 · good | Poor |
| Wed 16:00 | 1.06 · high | 1.73 · good | 27.30 · good | Poor |
| Wed 17:00 | 1.08 · high | 2.01 · good | 27.30 · good | Fair |
| Wed 18:00 | 1.08 · high | 2.11 · good | 27.30 · good | Fair |
| Wed 19:00 | 1.08 · high | 2.52 · good | 27.40 · good | Fair |
| Wed 20:00 | 1.14 · high | 3.59 · good | 27.50 · good | Fair |
| Wed 21:00 | 1.14 · high | 3.86 · good | 27.60 · good | Fair |
| Wed 22:00 | 1.14 · high | 4.10 · good | 27.80 · good | Fair |
| Wed 23:00 | 1.16 · high | 4.32 · good | 27.90 · good | Fair |
| Thu 00:00 | 1.16 · high | 3.30 · good | 27.90 · good | Poor |
| Thu 01:00 | 1.16 · high | 3.81 · good | 27.90 · good | Poor |
| Thu 02:00 | 1.16 · high | 4.58 · good | 27.90 · good | Poor |
| Thu 03:00 | 1.16 · high | 4.05 · good | 27.90 · good | Poor |
| Thu 04:00 | 1.16 · high | 3.12 · good | 27.80 · good | Poor |
| Thu 05:00 | 1.16 · high | 2.11 · good | 27.80 · good | Poor |
| Thu 06:00 | 1.16 · high | 1.45 · good | 27.70 · good | Poor |
| Thu 07:00 | 1.16 · high | 1.25 · good | 27.70 · good | Poor |
| Thu 08:00 | 1.16 · high | 1.36 · good | 27.60 · good | Poor |