# Big Island snorkeling forecast

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

- Location: Big Island, USA
- Timezone: Pacific/Honolulu
- Valid period: next 72 hours from 2026-09-30T02:01:01.185960-10:00
- Verdict: Marginal
- Score: 0.0/10
- Share of next 72h scored OK: 0%
- Source: snapshot
- Generated at: 2026-09-30T01:40:37.584132-10:00
- Conditions can change. HTML page: https://snorkelforecast.com/usa/big-island/
- Forecast JSON: https://snorkelforecast.com/usa/big-island/forecast.json
- Sea temperature: https://snorkelforecast.com/usa/big-island/sea-temperature/
- Sea temperature markdown: https://snorkelforecast.com/usa/big-island/sea-temperature.md
- History JSON: https://snorkelforecast.com/usa/big-island/history.json
- Embed widget: https://snorkelforecast.com/usa/big-island/embed/sea-temperature/
- Baseline normal for month 9: 27.4 °C (81.3 °F) from 3 sample years
- 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 |
| --- | --- | --- | --- | --- | --- | --- |
| 2026-09-30T03:00:00-10:00 | poor | 0.0 | no |  | 2.07 |  |
| 2026-09-30T04:00:00-10:00 | poor | 0.0 | no |  | 2.24 |  |
| 2026-09-30T05:00:00-10:00 | poor | 0.0 | no |  | 2.13 |  |
| 2026-09-30T06:00:00-10:00 | poor | 0.0 | no |  | 2.0 |  |
| 2026-09-30T07:00:00-10:00 | poor | 0.0 | no |  | 1.22 |  |
| 2026-09-30T08:00:00-10:00 | poor | 0.0 | no |  | 1.41 |  |
| 2026-09-30T09:00:00-10:00 | poor | 0.0 | no |  | 2.4 |  |
| 2026-09-30T10:00:00-10:00 | poor | 0.0 | no |  | 3.67 |  |
| 2026-09-30T11:00:00-10:00 | poor | 0.0 | no |  | 4.72 |  |
| 2026-09-30T12:00:00-10:00 | poor | 0.0 | no |  | 5.44 |  |
| 2026-09-30T13:00:00-10:00 | poor | 0.0 | no |  | 4.25 |  |
| 2026-09-30T14:00:00-10:00 | poor | 0.0 | no |  | 3.48 |  |
| 2026-09-30T15:00:00-10:00 | poor | 0.0 | no |  | 3.76 |  |
| 2026-09-30T16:00:00-10:00 | poor | 0.0 | no |  | 3.12 |  |
| 2026-09-30T17:00:00-10:00 | poor | 0.0 | no |  | 2.27 |  |
| 2026-09-30T18:00:00-10:00 | poor | 0.0 | no |  | 1.31 |  |
| 2026-09-30T19:00:00-10:00 | poor | 0.0 | no |  | 1.23 |  |
| 2026-09-30T20:00:00-10:00 | poor | 0.0 | no |  | 0.7 |  |
| 2026-09-30T21:00:00-10:00 | poor | 0.0 | no |  | 0.95 |  |
| 2026-09-30T22:00:00-10:00 | poor | 0.0 | no |  | 0.78 |  |
| 2026-09-30T23:00:00-10:00 | poor | 0.0 | no |  | 0.65 |  |
| 2026-10-01T00:00:00-10:00 | poor | 0.0 | no |  | 1.55 |  |
| 2026-10-01T01:00:00-10:00 | poor | 0.0 | no |  | 1.72 |  |
| 2026-10-01T02:00:00-10:00 | poor | 0.0 | no |  | 2.38 |  |

## 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)