Wednesday
✅ Good conditions
Main blocker: Waves
USA · Updated Wed 03:27 (HST) · Source: Snapshot
The skinny
Go in the best window Data updated Wed 03:27 (HST)Hawaii has a usable snorkeling window around Wed 07:00. The main thing to watch is waves.
Poor · 0.0/10
Wed 03:00 (HST)
Good · 5.8/10
Wed 07:00 (HST)
Good · 6.2/10
Fri 09:00 (HST)
Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.
Score: 5.8/10
Best time: Wed 07:00
Main risk: Waves
Best morning signal: Wed 07:00 (Good).
Best afternoon signal: Wed 12:00 (Fair). Peak afternoon wind is about 3.6 m/s.
Later today looks usable around Wed 07:00. Check boat availability.
Also: Maui vs Big Island, Maui vs Oahu
Maui has the better snorkel report this week (6.1/10). Big Island is the weakest model call right now.
Good model window in the next 72 hours
Next good model window: Wed 07:00–09:00 (15% of the next 72h meets the model threshold)
Wednesday
✅ Good conditions
Main blocker: Waves
Thursday
✅ Good conditions
Main blocker: Waves
Friday
✅ Good conditions
Main blocker: Waves
The next good model window starts at Wed 07:00 and lasts until 09:00.
Main blockers across the next 72 hours:
Drift estimate from wind, swell, current and warm water.
Low peak drift risk around Thu 01:00.
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: Wed 06:00
Wed 06:00, Wed 17:00, Thu 07:00, Thu 17:00, Fri 08:00
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Compare nearby spot forecasts for later today 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 03:00 – Mon 03:00 (HST)
Best snorkel score is 0.3 around Fri 13:00; 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.
Tap a chart to load just that series.
0/24 sampled hours stay at or below 0.36m (range 0.9m to 1.42m).
Wind is at or below 5.4m/s in 0/24 sampled hours (range 6.91 to 12.92m/s).
Tides range from 0.3m to 0.95m; 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 03:00 | 0.90 · high | 6.91 · high | 27.80 · good | Poor |
| Fri 04:00 | 1.12 · high | 7.40 · high | 27.80 · good | Poor |
| Fri 05:00 | 1.18 · high | 8.34 · high | 27.70 · good | Poor |
| Fri 06:00 | 1.20 · high | 8.15 · high | 27.70 · good | Poor |
| Fri 07:00 | 1.22 · high | 8.29 · high | 27.70 · good | Poor |
| Fri 08:00 | 1.24 · high | 8.47 · high | 27.70 · good | Poor |
| Fri 09:00 | 1.24 · high | 8.32 · high | 27.70 · good | Poor |
| Fri 10:00 | 1.26 · high | 8.24 · high | 27.80 · good | Poor |
| Fri 11:00 | 1.26 · high | 8.25 · high | 27.80 · good | Poor |
| Fri 12:00 | 1.26 · high | 8.39 · high | 27.80 · good | Poor |
| Fri 13:00 | 1.28 · high | 8.09 · high | 27.80 · good | Poor |
| Fri 14:00 | 1.28 · high | 8.86 · high | 27.80 · good | Poor |
| Fri 15:00 | 1.28 · high | 9.66 · high | 27.80 · good | Poor |
| Fri 16:00 | 1.26 · high | 9.33 · high | 27.80 · good | Poor |
| Fri 17:00 | 1.26 · high | 9.83 · high | 27.80 · good | Poor |
| Fri 18:00 | 1.26 · high | 10.00 · high | 27.80 · good | Poor |
| Fri 19:00 | 1.26 · high | 10.66 · high | 27.80 · good | Poor |
| Fri 20:00 | 1.26 · high | 8.83 · high | 27.80 · good | Poor |
| Fri 21:00 | 1.28 · high | 9.88 · high | 27.80 · good | Poor |
| Fri 22:00 | 1.28 · high | 10.56 · high | 27.80 · good | Poor |
| Fri 23:00 | 1.30 · high | 10.58 · high | 27.70 · good | Poor |
| Sat 00:00 | 1.36 · high | 10.54 · high | 27.70 · good | Poor |
| Sat 01:00 | 1.40 · high | 10.41 · high | 27.70 · good | Poor |
| Sat 02:00 | 1.42 · high | 12.92 · high | 27.70 · good | Poor |
| Sat 03:00 | 1.60 · high | 11.53 · high | 27.70 · good | Poor |
| Sat 04:00 | 1.64 · high | 12.12 · high | 27.70 · good | Poor |
| Sat 05:00 | 1.70 · high | 11.93 · high | 27.70 · good | Poor |
| Sat 06:00 | 1.70 · high | 11.93 · high | 27.70 · good | Poor |
| Sat 07:00 | 1.70 · high | 11.82 · high | 27.70 · good | Poor |
| Sat 08:00 | 1.70 · high | 11.48 · high | 27.70 · good | Poor |
| Sat 09:00 | 1.70 · high | 11.07 · high | 27.70 · good | Poor |
| Sat 10:00 | 1.70 · high | 10.46 · high | 27.70 · good | Poor |
| Sat 11:00 | 1.70 · high | 11.05 · high | 27.70 · good | Poor |
| Sat 12:00 | 1.70 · high | 9.85 · high | 27.70 · good | Poor |
| Sat 13:00 | 1.68 · high | 9.21 · high | 27.70 · good | Poor |
| Sat 14:00 | 1.68 · high | 10.77 · high | 27.70 · good | Poor |
| Sat 15:00 | 1.68 · high | 9.95 · high | 27.70 · good | Poor |
| Sat 16:00 | 1.68 · high | 9.91 · high | 27.70 · good | Poor |
| Sat 17:00 | 1.68 · high | 9.12 · high | 27.70 · good | Poor |
| Sat 18:00 | 1.66 · high | 9.01 · high | 27.70 · good | Poor |
| Sat 19:00 | 1.64 · high | 8.68 · high | 27.70 · good | Poor |
| Sat 20:00 | 1.62 · high | 8.68 · high | 27.70 · good | Poor |
| Sat 21:00 | 1.60 · high | 7.75 · high | 27.70 · good | Poor |
| Sat 22:00 | 1.60 · high | 7.84 · high | 27.70 · good | Poor |
| Sat 23:00 | 1.58 · high | 7.72 · high | 27.70 · good | Poor |
| Sun 00:00 | 1.54 · high | 7.71 · high | 27.60 · good | Poor |
| Sun 01:00 | 1.70 · high | 6.35 · high | 27.60 · good | Poor |
| Sun 02:00 | 1.46 · high | 6.57 · high | 27.60 · good | Poor |
| Sun 03:00 | 1.46 · high | 6.22 · high | 27.60 · good | Poor |
| Sun 04:00 | 1.48 · high | 6.06 · high | 27.60 · good | Poor |
| Sun 05:00 | 1.48 · high | 5.82 · high | 27.60 · good | Poor |
| Sun 06:00 | 1.50 · high | 5.46 · high | 27.60 · good | Poor |
| Sun 07:00 | 1.50 · high | 5.34 · good | 27.60 · good | Fair |
| Sun 08:00 | 1.52 · high | 5.79 · high | 27.60 · good | Fair |
| Sun 09:00 | 1.50 · high | 6.22 · high | 27.60 · good | Fair |
| Sun 10:00 | 1.48 · high | 6.37 · high | 27.70 · good | Fair |
| Sun 11:00 | 1.46 · high | 6.29 · high | 27.80 · good | Fair |
| Sun 12:00 | 1.46 · high | 5.68 · high | 27.90 · good | Fair |
| Sun 13:00 | 1.46 · high | 4.58 · good | 28.00 · good | Fair |
| Sun 14:00 | 1.46 · high | 3.42 · good | 28.00 · good | Poor |
| Sun 15:00 | 1.46 · high | 3.18 · good | 28.00 · good | Poor |
| Sun 16:00 | 1.46 · high | 3.67 · good | 28.00 · good | Poor |
| Sun 17:00 | 1.46 · high | 2.98 · good | 27.90 · good | Poor |
| Sun 18:00 | 1.46 · high | 2.30 · good | 27.90 · good | Poor |
| Sun 19:00 | 1.46 · high | 3.11 · good | 27.80 · good | Poor |
| Sun 20:00 | 1.46 · high | 2.57 · good | 27.80 · good | Poor |
| Sun 21:00 | 1.46 · high | 1.75 · good | 27.70 · good | Poor |
| Sun 22:00 | 1.46 · high | 1.35 · good | 27.70 · good | Poor |
| Sun 23:00 | 1.46 · high | 1.45 · good | 27.70 · good | Poor |
| Mon 00:00 | 1.44 · high | 1.88 · good | 27.70 · good | Poor |
| Mon 01:00 | 1.32 · high | 1.50 · good | 27.70 · good | Poor |
| Mon 02:00 | 1.32 · high | 1.40 · good | 27.70 · good | Poor |