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20.018, -155.835 · Big Island, Hawaii · legal zone: open (check bag & size limits)
| Window | Viz | Score | Energy | Swell | Wind | Tide | Water | Why |
|---|---|---|---|---|---|---|---|---|
| Dawn 06:00 | 9.2m conf Low | 4.5 | 28 kJ | 0.7m 0.7 / 0.5 / 0.9 9s | 6 km/h ↓ | 1.8m falling | 29° | clear water · onshore wind |
| Morning 09:00 | 9.5m conf Low | 4.6 | 30 kJ | 0.7m 0.7 / 0.5 / 1.0 9s | 13 km/h ↓ | 1.0m falling | 29° | clear water · offshore wind |
| Midday 12:00 | 9.6m conf Low | 4.5 | 34 kJ | 0.8m 0.8 / 0.5 / 1.0 9s | 9 km/h ↓ | 0.4m rising | 29° | clear water · offshore wind |
| Arvo 15:00 | 8.5m conf Low | 4 | 37 kJ | 0.8m 0.8 / 0.5 / 1.1 9s | 10 km/h ↓ | 1.1m rising | 27° | clear water · onshore wind |
| Dusk 18:00 | 9m conf Low | 4.2 | 39 kJ | 0.8m 0.8 / 0.5 / 1.1 10s | 6 km/h ↓ | 1.8m rising | 26° | clear water · onshore wind |
Swell column shows the 3-model mean; the amber row below it is ECMWF / Météo-France / GWAM separately (shown only when they disagree).
Common targets here. Size & bag limits are indicative — always verify current rules with Hawaiʻi Division of Aquatic Resources (DAR)
🔱 Scuba spearfishing is BANNED in the West Hawaiʻi area (Big Island west coast) and at Kīpahulu (Maui). Never spear crustaceans, turtles or marine mammals.