# Hanauma Bay snorkeling forecast

Hanauma Bay looks marginal today. The least-bad daylight window is around Wed 13:00, but waves is limiting the forecast.

- Location: Hanauma Bay, USA
- Timezone: Pacific/Honolulu
- Valid period: next 72 hours from 2026-10-21T03:49:08.494472-10:00
- Verdict: Marginal
- Score: 4.0/10
- Share of next 72h scored OK: 0%
- Source: snapshot
- Generated at: 2026-10-21T02:20:42.732601-10:00
- Conditions can change. HTML page: https://snorkelforecast.com/usa/hanauma-bay/
- Forecast JSON: https://snorkelforecast.com/usa/hanauma-bay/forecast.json
- Sea temperature: https://snorkelforecast.com/usa/hanauma-bay/sea-temperature/
- Sea temperature markdown: https://snorkelforecast.com/usa/hanauma-bay/sea-temperature.md
- History JSON: https://snorkelforecast.com/usa/hanauma-bay/history.json
- Embed widget: https://snorkelforecast.com/usa/hanauma-bay/embed/sea-temperature/
- Current sea temperature: 26.3 °C (79.3 °F)
- Baseline normal for month 10: 26.9 °C (80.4 °F) from 3 sample years
- Sea temperature versus month 10 normal: -0.6 °C (-1.1 °F), cooler than the stored baseline
- Scoring thresholds: waves <= 0.36 m, wind <= 5.4 m/s, current <= 0.36 m/s, water 20.6-30.4 °C. Forecast thresholds, not official safety limits.

## Next 24 hours

| time | rating | score | ok | waves_m | wind_mps | sst_c |
| --- | --- | --- | --- | --- | --- | --- |
| 2026-10-21T04:00:00-10:00 | poor | 0.0 | no | 1.4 | 5.86 | 26.3 |
| 2026-10-21T05:00:00-10:00 | poor | 0.0 | no | 1.38 | 5.75 | 26.3 |
| 2026-10-21T06:00:00-10:00 | poor | 0.0 | no | 1.38 | 5.43 | 26.3 |
| 2026-10-21T07:00:00-10:00 | fair | 0.3956629629629629 | no | 1.36 | 5.92 | 26.3 |
| 2026-10-21T08:00:00-10:00 | fair | 0.3944629629629629 | no | 1.36 | 5.92 | 26.3 |
| 2026-10-21T09:00:00-10:00 | fair | 0.3957907407407407 | no | 1.36 | 6.07 | 26.3 |
| 2026-10-21T10:00:00-10:00 | fair | 0.3960222222222223 | no | 1.36 | 6.06 | 26.3 |
| 2026-10-21T11:00:00-10:00 | fair | 0.3837907407407407 | no | 1.36 | 6.07 | 26.3 |
| 2026-10-21T12:00:00-10:00 | fair | 0.38734814814814816 | no | 1.36 | 6.02 | 26.3 |
| 2026-10-21T13:00:00-10:00 | fair | 0.398124074074074 | no | 1.34 | 5.71 | 26.4 |
| 2026-10-21T14:00:00-10:00 | poor | 0.0 | no | 1.34 | 5.62 | 26.4 |
| 2026-10-21T15:00:00-10:00 | poor | 0.0 | no | 1.32 | 5.12 | 26.4 |
| 2026-10-21T16:00:00-10:00 | poor | 0.0 | no | 1.32 | 4.91 | 26.4 |
| 2026-10-21T17:00:00-10:00 | poor | 0.0 | no | 1.3 | 4.72 | 26.4 |
| 2026-10-21T18:00:00-10:00 | poor | 0.0 | no | 1.32 | 4.61 | 26.3 |
| 2026-10-21T19:00:00-10:00 | poor | 0.0 | no | 1.32 | 5.43 | 26.3 |
| 2026-10-21T20:00:00-10:00 | poor | 0.0 | no | 1.34 | 6.17 | 26.3 |
| 2026-10-21T21:00:00-10:00 | poor | 0.0 | no | 1.34 | 6.08 | 26.3 |
| 2026-10-21T22:00:00-10:00 | poor | 0.0 | no | 1.32 | 5.78 | 26.3 |
| 2026-10-21T23:00:00-10:00 | poor | 0.0 | no | 1.32 | 5.8 | 26.3 |
| 2026-10-22T00:00:00-10:00 | poor | 0.0 | no | 1.3 | 5.9 | 26.3 |
| 2026-10-22T01:00:00-10:00 | poor | 0.0 | no | 1.28 | 5.89 | 26.3 |
| 2026-10-22T02:00:00-10:00 | poor | 0.0 | no | 1.26 | 5.52 | 26.3 |
| 2026-10-22T03:00:00-10:00 | poor | 0.0 | no | 1.24 | 5.24 | 26.3 |

## Nearby spots

- [Ahihi Kinau](https://snorkelforecast.com/usa/ahihi-kinau/index.md)
- [Anaehoomalu Bay](https://snorkelforecast.com/usa/anaehoomalu-bay/index.md)
- [Anini Beach](https://snorkelforecast.com/usa/anini-beach/index.md)
- [Bahia Honda](https://snorkelforecast.com/usa/bahia-honda/index.md)