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21.375, -158.143 · Oahu, Hawaii · legal zone: open (check bag & size limits)
| Window | Viz | Score | Energy | Swell | Wind | Tide | Water | Why |
|---|---|---|---|---|---|---|---|---|
| Dawn 06:00 | 1m conf Med | ✕ | 290 kJ | 2.2m – / 1.7 / 2.7 10s | 15 km/h ↓ | 1.2m falling | 30° | too big / strong — don't go · energy too high — not worth it |
| Morning 09:00 | 1m conf Med | ✕ | 268 kJ | 2.1m – / 1.7 / 2.5 10s | 17 km/h ↓ | 0.4m falling | 30° | too big / strong — don't go · energy too high — not worth it |
| Midday 12:00 | 1m conf Med | ✕ | 279 kJ | 2.2m – / 1.8 / 2.6 10s | 15 km/h ↓ | 0.9m rising | 30° | too big / strong — don't go · energy too high — not worth it |
| Arvo 15:00 | 1m conf Med | ✕ | 309 kJ | 2.3m – / 1.8 / 2.8 10s | 12 km/h ↓ | 1.8m rising | 25° | too big / strong — don't go · energy too high — not worth it |
| Dusk 18:00 | 1m conf Low | ✕ | 342 kJ | 2.4m – / 1.8 / 2.9 10s | 13 km/h ↓ | 1.4m falling | 24° | too big / strong — don't go · energy too high — not worth it |
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.