Thursday
⚠️ fair conditions
Main blocker: Waves
USA · Updated Thu 05:05 (HST) · Source: Snapshot
The skinny
Marginal Report Thu 07:08Kahaluu Beach Park looks marginal today. The least-bad daylight window is around Fri 13:00, but waves is limiting the forecast.
Score: 5.0/10
Best time: Fri 13:00
Main risk: Waves
Best morning signal: Thu 08:00 (Fair).
Best afternoon signal: Thu 12:00 (Poor). Peak afternoon wind is about 3.1 m/s.
Best nearby spots
AreaKailua-Kona
DifficultyEasy
Best timeMorning
ExposureProtected Kona reef
ShoreSandy/rocky entry with shallow reef
No safe 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
⚠️ 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 Thu 11:00.
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: Fri 16:00
Fri 03:00, Fri 16:00, Sat 04:00, Sat 17:00
Local operators found via Tripadvisor. Check conditions before you book.
Sponsored external links
Kona coast snorkel boat tours, including Kealakekua-area trips.
Small-group Kona ocean tours and snorkeling adventures.
Kona snorkel tours for Big Island reef and coast trips.
Compare nearby spots by score, forecast window and exposure before choosing a beach.
Viewing live forecast
Thu 17:00 – Sun 17:00 (HST)
Best snorkel score is 0.5 around Thu 08:00; 6 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 0.94m).
Wind is at or below 5.4m/s in 24/24 sampled hours (range 0.42 to 3.15m/s).
Tides range from 0.3m to 1.1m; 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 |
|---|---|---|---|---|
| Thu 18:00 | 0.90 · high | 0.55 · good | 27.90 · good | fair |
| Thu 19:00 | 0.90 · high | 1.72 · good | 28.00 · good | fair |
| Thu 20:00 | 0.90 · high | 2.72 · good | 28.10 · good | fair |
| Thu 21:00 | 0.90 · high | 2.62 · good | 28.30 · good | fair |
| Thu 22:00 | 0.90 · high | 3.08 · good | 28.50 · good | poor |
| Thu 23:00 | 0.90 · high | 3.15 · good | 28.60 · good | poor |
| Fri 00:00 | 0.90 · high | 2.86 · good | 28.70 · good | poor |
| Fri 01:00 | 0.90 · high | 2.55 · good | 28.70 · good | poor |
| Fri 02:00 | 0.90 · high | 2.09 · good | 28.60 · good | poor |
| Fri 03:00 | 0.90 · high | 2.09 · good | 28.60 · good | poor |
| Fri 04:00 | 0.90 · high | 1.64 · good | 28.50 · good | poor |
| Fri 05:00 | 0.90 · high | 1.03 · good | 28.40 · good | poor |
| Fri 06:00 | 0.90 · high | 0.47 · good | 28.30 · good | poor |
| Fri 07:00 | 0.90 · high | 0.55 · good | 28.30 · good | poor |
| Fri 08:00 | 0.90 · high | 0.54 · good | 28.20 · good | poor |
| Fri 09:00 | 0.90 · high | 0.57 · good | 28.10 · good | poor |
| Fri 10:00 | 0.90 · high | 0.50 · good | 28.10 · good | poor |
| Fri 11:00 | 0.92 · high | 0.57 · good | 28.00 · good | poor |
| Fri 12:00 | 0.92 · high | 0.42 · good | 28.00 · good | poor |
| Fri 13:00 | 0.92 · high | 0.46 · good | 27.90 · good | poor |
| Fri 14:00 | 0.92 · high | 0.51 · good | 27.90 · good | poor |
| Fri 15:00 | 0.92 · high | 0.74 · good | 27.90 · good | poor |
| Fri 16:00 | 0.92 · high | 0.85 · good | 27.80 · good | fair |
| Fri 17:00 | 0.94 · high | 1.27 · good | 27.80 · good | fair |
| Fri 18:00 | 0.94 · high | 1.37 · good | 27.90 · good | fair |
| Fri 19:00 | 0.94 · high | 2.03 · good | 28.00 · good | fair |
| Fri 20:00 | 0.94 · high | 2.20 · good | 28.10 · good | fair |
| Fri 21:00 | 0.94 · high | 2.04 · good | 28.30 · good | fair |
| Fri 22:00 | 0.94 · high | 2.41 · good | 28.50 · good | fair |
| Fri 23:00 | 0.96 · high | 2.66 · good | 28.60 · good | fair |
| Sat 00:00 | 0.96 · high | 2.15 · good | 28.70 · good | poor |
| Sat 01:00 | 0.96 · high | 1.87 · good | 28.70 · good | poor |
| Sat 02:00 | 0.96 · high | 1.71 · good | 28.70 · good | poor |
| Sat 03:00 | 0.96 · high | 1.46 · good | 28.60 · good | poor |
| Sat 04:00 | 0.96 · high | 1.30 · good | 28.50 · good | poor |
| Sat 05:00 | 0.96 · high | 1.06 · good | 28.40 · good | poor |
| Sat 06:00 | 0.96 · high | 0.57 · good | 28.40 · good | poor |
| Sat 07:00 | 0.96 · high | 0.43 · good | 28.30 · good | poor |
| Sat 08:00 | 0.96 · high | 0.53 · good | 28.30 · good | poor |
| Sat 09:00 | 0.96 · high | 0.54 · good | 28.20 · good | poor |
| Sat 10:00 | 0.96 · high | 0.36 · good | 28.10 · good | poor |
| Sat 11:00 | 0.94 · high | 0.07 · good | 28.10 · good | poor |
| Sat 12:00 | 0.94 · high | 0.57 · good | 28.00 · good | poor |
| Sat 13:00 | 0.94 · high | 0.62 · good | 28.00 · good | poor |
| Sat 14:00 | 0.92 · high | 0.68 · good | 27.90 · good | poor |
| Sat 15:00 | 0.92 · high | 0.21 · good | 27.90 · good | poor |
| Sat 16:00 | 0.92 · high | 0.76 · good | 27.80 · good | fair |
| Sat 17:00 | 0.92 · high | 1.36 · good | 27.80 · good | fair |
| Sat 18:00 | 0.92 · high | 1.63 · good | 27.90 · good | fair |
| Sat 19:00 | 0.92 · high | 2.00 · good | 28.00 · good | fair |
| Sat 20:00 | 0.92 · high | 2.43 · good | 28.10 · good | fair |
| Sat 21:00 | 0.92 · high | 2.41 · good | 28.30 · good | fair |
| Sat 22:00 | 0.92 · high | 2.75 · good | 28.40 · good | fair |
| Sat 23:00 | 0.92 · high | 3.16 · good | 28.60 · good | poor |
| Sun 00:00 | 0.92 · high | 3.15 · good | 28.70 · good | poor |
| Sun 01:00 | 0.92 · high | 2.56 · good | 28.70 · good | poor |
| Sun 02:00 | 0.94 · high | 2.29 · good | 28.70 · good | poor |
| Sun 03:00 | 0.94 · high | 1.95 · good | 28.70 · good | poor |
| Sun 04:00 | 0.94 · high | 1.75 · good | 28.60 · good | poor |