Sand Island Beach, HI
Beach Alerts
Crowd Alert
Crowd Alert: Beach at capacity from 1 PM-5 PM — consider alternative times
Surf Caution
Surf Caution: Strong waves expected from 11 AM-4 PM — not ideal for kids (5.0ft waves)
About This Beach
Sand Island Beach is a somewhat secluded beach on Oahu, characterized by its unique layout, history, and relatively uncrowded atmosphere. While offering opportunities for swimming, snorkeling, and surfing, it lacks consistent amenities like clean restrooms and showers. The beach is known for its quiet ambiance, scenic views, and diverse wildlife including stray cats and monk seals, attracting a mix of locals and visitors seeking a peaceful escape from the bustling tourist areas.
*Click a parking icon on the map to draw the shortest path to the nearest entrance.
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Beach Overview
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Weather Forecast
Updated: 7/18/2026, 10:15:00 AM
Hourly
| Time | Air Temp | UV | Wind | Rain |
|---|---|---|---|---|
| 10:00 | 84° | 5 | 13 mph | 0 |
| 11:00 | 86° | 7 | 13 mph | 0 |
| 12:00 | 86° | 8 | 13 mph | 0 |
| 13:00 | 85° | 9 | 13 mph | 0 |
| 14:00 | 86° | 9 | 14 mph | 0 |
| 15:00 | 85° | 8 | 15 mph | 0 |
| 16:00 | 84° | 6 | 15 mph | 0 |
Surf Conditions
Updated: Updated: 7/18/2026, 10:15:00 AM
Hourly Surf
| Time | Temp | Wave | Period | Swell | Tide |
|---|---|---|---|---|---|
| 10:00 | 80°F | 4.7 ft | 9s | ↓ S | +1.5 ft |
| 11:00 | 80°F | 4.8 ft | 9s | ↓ S | +1.4 ft |
| 12:00 | 80°F | 4.9 ft | 9s | ↓ S | +1.4 ft |
| 13:00 | 80°F | 4.9 ft | 9s | ↓ S | +1.5 ft |
| 14:00 | 80°F | 5 ft | 9s | ↓ S | +1.8 ft |
| 15:00 | 80°F | 4.9 ft | 9s | ↓ S | +2.1 ft |
| 16:00 | 80°F | 4.9 ft | 9s | ↓ S | +2.4 ft |