# Perhentian Islands snorkeling forecast

Perhentian Islands has a usable snorkeling window around Mon 18:00. The main thing to watch is sea temperature.

- Location: Perhentian Islands, Malaysia
- Timezone: Asia/Kuala_Lumpur
- Valid period: next 72 hours from 2026-10-19T17:38:14.398072+08:00
- Verdict: Go in the best window
- Score: 5.9/10
- Share of next 72h scored OK: 45%
- Source: snapshot
- Generated at: 2026-10-19T17:29:41.553370+08:00
- Conditions can change. HTML page: https://snorkelforecast.com/malaysia/perhentian-islands/
- Forecast JSON: https://snorkelforecast.com/malaysia/perhentian-islands/forecast.json
- Sea temperature: https://snorkelforecast.com/malaysia/perhentian-islands/sea-temperature/
- Sea temperature markdown: https://snorkelforecast.com/malaysia/perhentian-islands/sea-temperature.md
- History JSON: https://snorkelforecast.com/malaysia/perhentian-islands/history.json
- Embed widget: https://snorkelforecast.com/malaysia/perhentian-islands/embed/sea-temperature/
- Current sea temperature: 31.4 °C (88.5 °F)
- Baseline normal for month 10: 30.5 °C (86.9 °F) from 3 sample years
- Sea temperature versus month 10 normal: +0.9 °C (+1.6 °F), warmer 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 |
| --- | --- | --- | --- | --- | --- | --- |
| 2026-10-19T18:00:00+08:00 | good | 0.5941333333333333 | yes | 0.18 | 2.88 | 31.4 |
| 2026-10-19T19:00:00+08:00 | poor | 0.0 | no | 0.18 | 3.59 | 31.3 |
| 2026-10-19T20:00:00+08:00 | poor | 0.0 | no | 0.18 | 5.94 | 31.3 |
| 2026-10-19T21:00:00+08:00 | poor | 0.0 | no | 0.18 | 3.12 | 31.2 |
| 2026-10-19T22:00:00+08:00 | poor | 0.0 | no | 0.16 | 1.18 | 31.2 |
| 2026-10-19T23:00:00+08:00 | poor | 0.0 | no | 0.16 | 0.61 | 31.1 |
| 2026-10-20T00:00:00+08:00 | poor | 0.0 | no | 0.16 | 0.47 | 31.1 |
| 2026-10-20T01:00:00+08:00 | poor | 0.0 | no | 0.14 | 3.4 | 31.0 |
| 2026-10-20T02:00:00+08:00 | poor | 0.0 | no | 0.14 | 4.16 | 31.0 |
| 2026-10-20T03:00:00+08:00 | poor | 0.0 | no | 0.14 | 3.02 | 30.9 |
| 2026-10-20T04:00:00+08:00 | poor | 0.0 | no | 0.14 | 2.69 | 30.9 |
| 2026-10-20T05:00:00+08:00 | poor | 0.0 | no | 0.14 | 3.67 | 30.9 |
| 2026-10-20T06:00:00+08:00 | poor | 0.0 | no | 0.14 | 4.21 | 30.8 |
| 2026-10-20T07:00:00+08:00 | poor | 0.0 | no | 0.14 | 3.69 | 30.8 |
| 2026-10-20T08:00:00+08:00 | good | 0.6712981481481481 | yes | 0.14 | 3.62 | 30.9 |
| 2026-10-20T09:00:00+08:00 | good | 0.7024314814814815 | yes | 0.14 | 3.26 | 30.9 |
| 2026-10-20T10:00:00+08:00 | good | 0.6967055555555555 | yes | 0.14 | 3.3 | 31.1 |
| 2026-10-20T11:00:00+08:00 | excellent | 0.7610944444444444 | yes | 0.14 | 3.24 | 31.2 |
| 2026-10-20T12:00:00+08:00 | excellent | 0.745924074074074 | yes | 0.14 | 3.04 | 31.3 |
| 2026-10-20T13:00:00+08:00 | excellent | 0.7484796296296296 | yes | 0.14 | 2.8 | 31.4 |
| 2026-10-20T14:00:00+08:00 | good | 0.6911444444444445 | yes | 0.14 | 2.97 | 31.5 |
| 2026-10-20T15:00:00+08:00 | good | 0.6706277777777777 | yes | 0.14 | 3.96 | 31.5 |
| 2026-10-20T16:00:00+08:00 | good | 0.7099203703703703 | yes | 0.14 | 3.74 | 31.4 |
| 2026-10-20T17:00:00+08:00 | good | 0.7057 | yes | 0.14 | 2.73 | 31.4 |

## Nearby spots

- [Langkawi](https://snorkelforecast.com/malaysia/langkawi/index.md)
- [Mabul](https://snorkelforecast.com/malaysia/mabul/index.md)
- [Redang Island](https://snorkelforecast.com/malaysia/redang-island/index.md)
- [Sipadan](https://snorkelforecast.com/malaysia/sipadan/index.md)