Monday
❌ Poor conditions
Main blocker: Waves
USA · Updated Mon 19:10 (HST) · Source: Snapshot
The skinny
Marginal Report Mon 09:32Sharks Cove looks marginal today. The least-bad daylight window is around Tue 07:00, but waves is limiting the forecast.
Score: 4.2/10
Best time: Tue 07:00
Main risk: Waves
Best morning signal: Mon 10:00 (Poor).
Best afternoon signal: Mon 12:00 (Poor). Peak afternoon wind is about 5.4 m/s.
Best nearby spots
AreaNorth Shore
DifficultyModerate
Best timeSummer mornings
ExposureNorth Shore; unsafe during winter surf
ShoreLava-rock tide pools and cove
These notes help with planning. Rules and closures can change.
AccessShore entry is over lava rock and the cove changes quickly with swell. Treat winter North Shore surf as a no-entry signal.
ParkingParking fills quickly on the North Shore. Use legal spaces and keep emergency access clear.
ReservationsNo general snorkel reservation is listed. Check posted rules and current surf notices.
ClosuresDo not enter during large surf, strong surge, or a posted closure. Summer conditions are usually the more practical window.
Marine lifeSharks Cove sits in the Pupukea Marine Life Conservation District. Do not take fish, coral, rocks, or shells.
No good model window in the next 72 hours
Use the best-available section for the least-bad times.
Monday
❌ Poor conditions
Main blocker: Waves
Tuesday
⚠️ Fair conditions
Main blocker: Waves
Wednesday
⚠️ Fair 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: Tue 10:00
Tue 00:00, Tue 10:00, Wed 00:00, Wed 11:00, Thu 01:00, Thu 12:00
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 current forecast
Mon 19:00 – Thu 19:00 (HST)
Best snorkel score is 0.42 around Tue 07:00; 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.
Tap a chart to load just that series.
0/24 sampled hours stay at or below 0.36m (range 1.26m to 1.38m).
Wind is at or below 5.4m/s in 22/24 sampled hours (range 3.5 to 5.57m/s).
Tides range from 0.15m to 1.0m; 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 20:00 | 1.38 · high | 5.14 · good | 26.60 · good | Poor |
| Mon 21:00 | 1.38 · high | 5.21 · good | 26.60 · good | Poor |
| Mon 22:00 | 1.38 · high | 5.26 · good | 26.70 · good | Poor |
| Mon 23:00 | 1.38 · high | 5.42 · high | 26.70 · good | Poor |
| Tue 00:00 | 1.38 · high | 5.57 · high | 26.70 · good | Poor |
| Tue 01:00 | 1.38 · high | 5.31 · good | 26.70 · good | Poor |
| Tue 02:00 | 1.36 · high | 5.22 · good | 26.70 · good | Poor |
| Tue 03:00 | 1.36 · high | 5.00 · good | 26.70 · good | Poor |
| Tue 04:00 | 1.34 · high | 4.62 · good | 26.70 · good | Poor |
| Tue 05:00 | 1.34 · high | 4.18 · good | 26.70 · good | Poor |
| Tue 06:00 | 1.32 · high | 3.72 · good | 26.70 · good | Poor |
| Tue 07:00 | 1.32 · high | 3.81 · good | 26.70 · good | Poor |
| Tue 08:00 | 1.30 · high | 3.50 · good | 26.70 · good | Poor |
| Tue 09:00 | 1.30 · high | 3.75 · good | 26.70 · good | Poor |
| Tue 10:00 | 1.30 · high | 3.91 · good | 26.60 · good | Poor |
| Tue 11:00 | 1.30 · high | 3.85 · good | 26.60 · good | Poor |
| Tue 12:00 | 1.30 · high | 3.62 · good | 26.60 · good | Poor |
| Tue 13:00 | 1.30 · high | 3.81 · good | 26.60 · good | Poor |
| Tue 14:00 | 1.28 · high | 3.63 · good | 26.60 · good | Poor |
| Tue 15:00 | 1.28 · high | 3.56 · good | 26.60 · good | Poor |
| Tue 16:00 | 1.28 · high | 3.61 · good | 26.60 · good | Poor |
| Tue 17:00 | 1.26 · high | 3.60 · good | 26.60 · good | Fair |
| Tue 18:00 | 1.26 · high | 4.15 · good | 26.60 · good | Fair |
| Tue 19:00 | 1.26 · high | 4.70 · good | 26.60 · good | Fair |
| Tue 20:00 | 1.24 · high | 4.91 · good | 26.60 · good | Poor |
| Tue 21:00 | 1.24 · high | 5.09 · good | 26.70 · good | Poor |
| Tue 22:00 | 1.24 · high | 5.06 · good | 26.70 · good | Fair |
| Tue 23:00 | 1.24 · high | 4.96 · good | 26.80 · good | Fair |
| Wed 00:00 | 1.24 · high | 5.34 · good | 26.80 · good | Poor |
| Wed 01:00 | 1.24 · high | 5.39 · good | 26.80 · good | Poor |
| Wed 02:00 | 1.26 · high | 5.11 · good | 26.80 · good | Poor |
| Wed 03:00 | 1.26 · high | 4.96 · good | 26.80 · good | Poor |
| Wed 04:00 | 1.26 · high | 4.98 · good | 26.80 · good | Poor |
| Wed 05:00 | 1.28 · high | 5.00 · good | 26.80 · good | Poor |
| Wed 06:00 | 1.28 · high | 4.50 · good | 26.80 · good | Poor |
| Wed 07:00 | 1.28 · high | 4.77 · good | 26.80 · good | Poor |
| Wed 08:00 | 1.26 · high | 4.69 · good | 26.70 · good | Poor |
| Wed 09:00 | 1.26 · high | 4.13 · good | 26.70 · good | Poor |
| Wed 10:00 | 1.26 · high | 3.75 · good | 26.70 · good | Poor |
| Wed 11:00 | 1.26 · high | 3.43 · good | 26.70 · good | Poor |
| Wed 12:00 | 1.26 · high | 3.91 · good | 26.70 · good | Poor |
| Wed 13:00 | 1.26 · high | 4.06 · good | 26.70 · good | Poor |
| Wed 14:00 | 1.28 · high | 4.20 · good | 26.60 · good | Poor |
| Wed 15:00 | 1.28 · high | 4.31 · good | 26.60 · good | Poor |
| Wed 16:00 | 1.28 · high | 4.31 · good | 26.60 · good | Poor |
| Wed 17:00 | 1.30 · high | 4.68 · good | 26.60 · good | Fair |
| Wed 18:00 | 1.30 · high | 5.15 · good | 26.60 · good | Fair |
| Wed 19:00 | 1.30 · high | 5.74 · high | 26.60 · good | Fair |
| Wed 20:00 | 1.32 · high | 5.77 · high | 26.70 · good | Poor |
| Wed 21:00 | 1.32 · high | 6.09 · high | 26.70 · good | Poor |
| Wed 22:00 | 1.30 · high | 6.03 · high | 26.80 · good | Poor |
| Wed 23:00 | 1.30 · high | 5.93 · high | 26.80 · good | Poor |
| Thu 00:00 | 1.28 · high | 5.84 · high | 26.80 · good | Poor |
| Thu 01:00 | 1.30 · high | 5.77 · high | 26.80 · good | Poor |
| Thu 02:00 | 1.30 · high | 5.73 · high | 26.80 · good | Poor |
| Thu 03:00 | 1.32 · high | 5.82 · high | 26.80 · good | Poor |
| Thu 04:00 | 1.34 · high | 5.54 · high | 26.80 · good | Poor |
| Thu 05:00 | 1.36 · high | 5.38 · good | 26.80 · good | Poor |
| Thu 06:00 | 1.38 · high | 5.16 · good | 26.80 · good | Poor |
| Thu 07:00 | 1.38 · high | 4.85 · good | 26.80 · good | Poor |
| Thu 08:00 | 1.38 · high | 4.44 · good | 26.70 · good | Poor |
| Thu 09:00 | 1.38 · high | 4.03 · good | 26.70 · good | Poor |
| Thu 10:00 | 1.38 · high | 3.76 · good | 26.70 · good | Poor |
| Thu 11:00 | 1.40 · high | 3.58 · good | 26.70 · good | Poor |
| Thu 12:00 | 1.40 · high | 3.82 · good | 26.70 · good | Poor |
| Thu 13:00 | 1.40 · high | 4.18 · good | 26.70 · good | Poor |
| Thu 14:00 | 1.38 · high | 4.16 · good | 26.60 · good | Poor |
| Thu 15:00 | 1.38 · high | 4.14 · good | 26.60 · good | Poor |
| Thu 16:00 | 1.40 · high | 3.84 · good | 26.60 · good | Poor |
| Thu 17:00 | 1.40 · high | 4.56 · good | 26.60 · good | Fair |
| Thu 18:00 | 1.42 · high | 5.84 · high | 26.60 · good | Poor |