USA · Updated Sun 02:48 (HST) · Source: Snapshot
The skinny
Marginal Data updated Sun 02:48 (HST)Oahu looks marginal today. The least-bad daylight window is around Sun 12:00, but waves is limiting the forecast.
Poor · 0.0/10
Sun 02:00 (HST)
Poor · 3.5/10
Sun 12:00 (HST)
Fair · 4.7/10
Tue 07:00 (HST)
Model estimates using Open-Meteo; not observations or safety guarantees. Check official advisories and conditions at the beach.
Score: 3.5/10
Best time: Sun 12:00
Main risk: Waves
Best morning signal: Sun 07:00 (Poor).
Best afternoon signal: Sun 12:00 (Poor). Peak afternoon wind is about 8.7 m/s.
Best nearby spots later today
Weakest nearby later today
Read the Oahu snorkeling guide for coast, access and best-month guidance. Also: Maui vs Big Island, Maui vs Oahu
Sunday, September 27, 2026 · HST · Data updated Sun 02:48
Compare the coasts by forecast period. These are model estimates, not beach observations. Open each beach report and check official advisories before leaving.
Hanauma Bay has the best forecast in Southeast Oahu later today.
Forecast for the hour starting Sun 02:00: 3.0 m waves and 9.8 m/s wind.
Its best forecast hour is Sun 10:00, with 3.0 m waves and 9.7 m/s wind.
Its best forecast hour is Tue 08:00, with 1.8 m waves and 1.4 m/s wind.
Lanikai Beach has the best forecast in Windward Oahu later today.
Forecast for the hour starting Sun 02:00: 3.5 m waves and 9.8 m/s wind.
Its best forecast hour is Sun 10:00, with 3.5 m waves and 9.7 m/s wind.
Its best forecast hour is Tue 08:00, with 1.9 m waves and 1.4 m/s wind.
Electric Beach has the best forecast in Leeward Oahu later today.
Forecast for the hour starting Sun 02:00: 2.7 m waves and 9.5 m/s wind.
Its best forecast hour is Sun 11:00, with 2.9 m waves and 10.1 m/s wind.
Its best forecast hour is Tue 08:00, with 2.1 m waves and 4.2 m/s wind.
Sharks Cove has the best forecast in North Shore Oahu later today.
Forecast for the hour starting Sun 02:00: 3.6 m waves and 10.1 m/s wind.
Its best forecast hour is Sun 09:00, with 3.5 m waves and 11.1 m/s wind.
Its best forecast hour is Tue 08:00, with 1.9 m waves and 2.3 m/s wind.
No beach in this Oahu report reaches our good model threshold later today. Check the hourly beach forecasts and official alerts before entering the water.
Sharks Cove · 2.6/10
Its best forecast hour is Sun 09:00, with 3.5 m waves and 11.1 m/s wind.
A camera shows one stretch of coast. Check its time stamp and the official alerts too.
Oahu sea temperature · Compare Hawaii islands · Read the Oahu snorkeling guide
The score uses the hourly wave, wind, water temperature, tide and current forecast. A beach can differ from the wider forecast grid. Check beach signs, lifeguards and official alerts before you enter.
AreaOahu
DifficultyVaries by beach
Best timeMorning
ExposureSouth, west, east and north shores vary by season
ShoreIsland hub
No good model window in the next 72 hours
Use the best-available section for the least-bad times.
Sunday
❌ Poor conditions
Main blocker: Waves
Monday
⚠️ Fair conditions
Main blocker: Waves
Tuesday
⚠️ Fair 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 Sun 07:00.
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: Sun 04:00
Sun 04:00, Mon 04:00, Mon 16:00, Tue 05:00, Tue 16:00
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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 02:00 – Mon 02:00 (HST)
Best snorkel score is 0.52 around Fri 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 1.02m to 1.16m).
Wind is at or below 5.4m/s in 24/24 sampled hours (range 1.92 to 3.59m/s).
Tides range from 0.2m to 0.77m; 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 |
|---|---|---|---|---|
| Fri 02:00 | 1.16 · high | 1.99 · good | 28.20 · good | Poor |
| Fri 03:00 | 1.16 · high | 1.95 · good | 28.10 · good | Poor |
| Fri 04:00 | 1.14 · high | 2.13 · good | 28.10 · good | Poor |
| Fri 05:00 | 1.14 · high | 2.21 · good | 28.10 · good | Poor |
| Fri 06:00 | 1.14 · high | 1.92 · good | 28.00 · good | Poor |
| Fri 07:00 | 1.12 · high | 1.94 · good | 28.00 · good | Fair |
| Fri 08:00 | 1.12 · high | 2.73 · good | 28.00 · good | Fair |
| Fri 09:00 | 1.12 · high | 3.03 · good | 28.10 · good | Fair |
| Fri 10:00 | 1.12 · high | 2.89 · good | 28.10 · good | Fair |
| Fri 11:00 | 1.12 · high | 3.32 · good | 28.20 · good | Fair |
| Fri 12:00 | 1.12 · high | 3.59 · good | 28.30 · good | Fair |
| Fri 13:00 | 1.10 · high | 3.10 · good | 28.30 · good | Fair |
| Fri 14:00 | 1.10 · high | 2.98 · good | 28.40 · good | Poor |
| Fri 15:00 | 1.08 · high | 2.44 · good | 28.40 · good | Poor |
| Fri 16:00 | 1.08 · high | 2.48 · good | 28.40 · good | Poor |
| Fri 17:00 | 1.06 · high | 2.62 · good | 28.40 · good | Poor |
| Fri 18:00 | 1.06 · high | 2.62 · good | 28.40 · good | Poor |
| Fri 19:00 | 1.06 · high | 2.25 · good | 28.40 · good | Poor |
| Fri 20:00 | 1.06 · high | 2.69 · good | 28.40 · good | Poor |
| Fri 21:00 | 1.06 · high | 2.69 · good | 28.40 · good | Poor |
| Fri 22:00 | 1.04 · high | 2.54 · good | 28.30 · good | Poor |
| Fri 23:00 | 1.04 · high | 2.34 · good | 28.30 · good | Poor |
| Sat 00:00 | 1.02 · high | 2.39 · good | 28.20 · good | Poor |
| Sat 01:00 | 1.02 · high | 2.23 · good | 28.20 · good | Poor |
| Sat 02:00 | 1.02 · high | 2.05 · good | 28.00 · good | Poor |
| Sat 03:00 | 1.00 · high | 2.10 · good | 28.00 · good | Poor |
| Sat 04:00 | 1.00 · high | 1.95 · good | 27.90 · good | Poor |
| Sat 05:00 | 0.98 · high | 2.10 · good | 27.90 · good | Poor |
| Sat 06:00 | 0.98 · high | 2.40 · good | 27.90 · good | Poor |
| Sat 07:00 | 0.96 · high | 2.20 · good | 27.90 · good | Fair |
| Sat 08:00 | 0.96 · high | 2.20 · good | 27.90 · good | Fair |
| Sat 09:00 | 0.96 · high | 2.35 · good | 27.90 · good | Fair |
| Sat 10:00 | 0.94 · high | 2.71 · good | 28.00 · good | Fair |
| Sat 11:00 | 0.94 · high | 2.91 · good | 28.10 · good | Fair |
| Sat 12:00 | 0.92 · high | 3.00 · good | 28.10 · good | Fair |
| Sat 13:00 | 0.92 · high | 3.06 · good | 28.20 · good | Fair |
| Sat 14:00 | 0.90 · high | 3.33 · good | 28.30 · good | Poor |
| Sat 15:00 | 0.90 · high | 3.05 · good | 28.30 · good | Poor |
| Sat 16:00 | 0.88 · high | 2.80 · good | 28.30 · good | Poor |
| Sat 17:00 | 0.88 · high | 3.09 · good | 28.30 · good | Poor |
| Sat 18:00 | 0.88 · high | 3.07 · good | 28.30 · good | Poor |
| Sat 19:00 | 0.88 · high | 2.55 · good | 28.30 · good | Poor |
| Sat 20:00 | 0.88 · high | 2.31 · good | 28.30 · good | Poor |
| Sat 21:00 | 0.88 · high | 2.31 · good | 28.30 · good | Poor |
| Sat 22:00 | 0.88 · high | 2.17 · good | 28.30 · good | Poor |
| Sat 23:00 | 0.88 · high | 2.28 · good | 28.30 · good | Poor |
| Sun 00:00 | 0.88 · high | 2.26 · good | 28.20 · good | Poor |
| Sun 01:00 | 0.82 · high | 1.94 · good | 28.20 · good | Poor |
| Sun 02:00 | 0.82 · high | 1.99 · good | 28.10 · good | Poor |
| Sun 03:00 | 0.80 · high | 1.90 · good | 28.00 · good | Poor |
| Sun 04:00 | 0.80 · high | 2.11 · good | 28.00 · good | Poor |
| Sun 05:00 | 0.78 · high | 2.26 · good | 27.90 · good | Poor |
| Sun 06:00 | 0.78 · high | 2.23 · good | 27.90 · good | Poor |
| Sun 07:00 | 0.78 · high | 2.11 · good | 27.90 · good | Fair |
| Sun 08:00 | 0.78 · high | 2.55 · good | 27.90 · good | Fair |
| Sun 09:00 | 0.78 · high | 3.61 · good | 27.90 · good | Fair |
| Sun 10:00 | 0.82 · high | 3.43 · good | 28.00 · good | Fair |
| Sun 11:00 | 0.82 · high | 3.64 · good | 28.00 · good | Fair |
| Sun 12:00 | 0.82 · high | 3.87 · good | 28.10 · good | Fair |
| Sun 13:00 | 0.82 · high | 3.94 · good | 28.20 · good | Fair |
| Sun 14:00 | 0.82 · high | 3.61 · good | 28.20 · good | Poor |
| Sun 15:00 | 0.82 · high | 3.58 · good | 28.20 · good | Poor |
| Sun 16:00 | 0.84 · high | 3.78 · good | 28.30 · good | Poor |
| Sun 17:00 | 0.84 · high | 3.96 · good | 28.30 · good | Poor |
| Sun 18:00 | 0.84 · high | 3.68 · good | 28.30 · good | Poor |
| Sun 19:00 | 0.82 · high | 2.44 · good | 28.20 · good | Poor |
| Sun 20:00 | 0.82 · high | 2.38 · good | 28.20 · good | Poor |
| Sun 21:00 | 0.82 · high | 2.60 · good | 28.20 · good | Poor |
| Sun 22:00 | 0.80 · high | 2.73 · good | 28.20 · good | Poor |
| Sun 23:00 | 0.80 · high | 2.15 · good | 28.10 · good | Poor |
| Mon 00:00 | 0.80 · high | 1.95 · good | 28.10 · good | Poor |
| Mon 01:00 | 0.80 · high | 2.15 · good | 27.80 · good | Poor |
