Thursday
⚠️ Fair conditions
Main blocker: Waves
USA · Updated Thu 12:00 (HST) · Source: Snapshot
The skinny
Marginal Report Thu 02:12Ulua 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
Best morning signal: Thu 07:00 (Fair).
Best afternoon signal: Thu 13:00 (Poor). Peak afternoon wind is about 7.5 m/s.
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 peak drift risk around Thu 09:00.
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.
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
Fri 12:00 – Mon 12:00 (HST)
Best snorkel score is 0.55 around Fri 09:00; 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 0.68m to 0.86m).
Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.25 to 3.62m/s).
Tides range from 0.23m to 0.88m; 1 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 |
|---|---|---|---|---|
| Fri 12:00 | 0.68 · high | 1.48 · good | 27.20 · good | Poor |
| Fri 13:00 | 0.68 · high | 1.48 · good | 27.10 · good | Poor |
| Fri 14:00 | 0.68 · high | 1.25 · good | 27.10 · good | Poor |
| Fri 15:00 | 0.68 · high | 1.48 · good | 27.10 · good | Poor |
| Fri 16:00 | 0.68 · high | 1.77 · good | 27.10 · good | Poor |
| Fri 17:00 | 0.70 · high | 1.82 · good | 27.10 · good | Fair |
| Fri 18:00 | 0.70 · high | 1.90 · good | 27.10 · good | Fair |
| Fri 19:00 | 0.70 · high | 2.43 · good | 27.20 · good | Good |
| Fri 20:00 | 0.72 · high | 3.01 · good | 27.30 · good | Fair |
| Fri 21:00 | 0.72 · high | 3.39 · good | 27.40 · good | Fair |
| Fri 22:00 | 0.74 · high | 3.62 · good | 27.60 · good | Fair |
| Fri 23:00 | 0.74 · high | 3.36 · good | 27.70 · good | Fair |
| Sat 00:00 | 0.76 · high | 2.86 · good | 27.70 · good | Poor |
| Sat 01:00 | 0.76 · high | 2.97 · good | 27.70 · good | Poor |
| Sat 02:00 | 0.76 · high | 2.94 · good | 27.70 · good | Poor |
| Sat 03:00 | 0.76 · high | 2.66 · good | 27.70 · good | Poor |
| Sat 04:00 | 0.78 · high | 2.11 · good | 27.60 · good | Poor |
| Sat 05:00 | 0.78 · high | 2.04 · good | 27.60 · good | Poor |
| Sat 06:00 | 0.80 · high | 2.00 · good | 27.50 · good | Poor |
| Sat 07:00 | 0.82 · high | 2.50 · good | 27.50 · good | Poor |
| Sat 08:00 | 0.82 · high | 2.55 · good | 27.40 · good | Poor |
| Sat 09:00 | 0.84 · high | 2.52 · good | 27.40 · good | Poor |
| Sat 10:00 | 0.86 · high | 2.26 · good | 27.30 · good | Poor |
| Sat 11:00 | 0.86 · high | 1.81 · good | 27.30 · good | Poor |
| Sat 12:00 | 0.86 · high | 1.97 · good | 27.30 · good | Poor |
| Sat 13:00 | 0.86 · high | 2.40 · good | 27.20 · good | Poor |
| Sat 14:00 | 0.84 · high | 2.44 · good | 27.20 · good | Poor |
| Sat 15:00 | 0.84 · high | 2.40 · good | 27.20 · good | Poor |
| Sat 16:00 | 0.84 · high | 1.81 · good | 27.20 · good | Poor |
| Sat 17:00 | 0.86 · high | 1.51 · good | 27.20 · good | Fair |
| Sat 18:00 | 0.86 · high | 2.39 · good | 27.20 · good | Fair |
| Sat 19:00 | 0.86 · high | 2.89 · good | 27.20 · good | Fair |
| Sat 20:00 | 0.88 · high | 3.11 · good | 27.30 · good | Fair |
| Sat 21:00 | 0.88 · high | 3.05 · good | 27.50 · good | Fair |
| Sat 22:00 | 0.90 · high | 3.41 · good | 27.60 · good | Fair |
| Sat 23:00 | 0.92 · high | 3.32 · good | 27.70 · good | Fair |
| Sun 00:00 | 0.96 · high | 2.84 · good | 27.70 · good | Poor |
| Sun 01:00 | 0.96 · high | 2.41 · good | 27.70 · good | Poor |
| Sun 02:00 | 0.98 · high | 2.19 · good | 27.70 · good | Poor |
| Sun 03:00 | 0.98 · high | 2.67 · good | 27.70 · good | Poor |
| Sun 04:00 | 0.98 · high | 2.30 · good | 27.70 · good | Poor |
| Sun 05:00 | 0.96 · high | 1.77 · good | 27.60 · good | Poor |
| Sun 06:00 | 0.96 · high | 2.06 · good | 27.60 · good | Poor |
| Sun 07:00 | 0.96 · high | 2.27 · good | 27.50 · good | Poor |
| Sun 08:00 | 0.94 · high | 2.12 · good | 27.50 · good | Poor |
| Sun 09:00 | 0.94 · high | 1.86 · good | 27.50 · good | Poor |
| Sun 10:00 | 0.94 · high | 1.68 · good | 27.40 · good | Poor |
| Sun 11:00 | 0.96 · high | 1.73 · good | 27.10 · good | Poor |
| Sun 12:00 | 0.96 · high | 1.77 · good | 27.10 · good | Poor |
| Sun 13:00 | 0.96 · high | 2.27 · good | 27.10 · good | Poor |
| Sun 14:00 | 0.94 · high | 2.76 · good | 27.10 · good | Poor |
| Sun 15:00 | 0.94 · high | 2.82 · good | 27.10 · good | Poor |
| Sun 16:00 | 0.94 · high | 2.72 · good | 27.10 · good | Poor |
| Sun 17:00 | 0.96 · high | 2.91 · good | 27.10 · good | Fair |
| Sun 18:00 | 0.96 · high | 3.01 · good | 27.10 · good | Fair |
| Sun 19:00 | 0.98 · high | 3.36 · good | 27.20 · good | Fair |
| Sun 20:00 | 1.00 · high | 4.40 · good | 27.30 · good | Fair |
| Sun 21:00 | 1.00 · high | 4.72 · good | 27.40 · good | Fair |
| Sun 22:00 | 1.02 · high | 3.94 · good | 27.60 · good | Fair |
| Sun 23:00 | 1.02 · high | 3.35 · good | 27.70 · good | Fair |
| Mon 00:00 | 1.04 · high | 3.18 · good | 27.70 · good | Poor |
| Mon 01:00 | 1.04 · high | 2.87 · good | 27.70 · good | Poor |
| Mon 02:00 | 1.04 · high | 2.80 · good | 27.70 · good | Poor |
| Mon 03:00 | 1.04 · high | 2.54 · good | 27.70 · good | Poor |
| Mon 04:00 | 1.04 · high | 2.62 · good | 27.60 · good | Poor |
| Mon 05:00 | 1.02 · high | 2.39 · good | 27.60 · good | Poor |
| Mon 06:00 | 1.02 · high | 2.39 · good | 27.50 · good | Poor |
| Mon 07:00 | 1.02 · high | 2.44 · good | 27.50 · good | Poor |
| Mon 08:00 | 1.00 · high | 2.33 · good | 27.50 · good | Poor |
| 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 |