# Koh Bon: scuba diving weather

Boat dive · Similan Islands, Phang Nga · 8.8280, 97.8050

Updated Sat 14 Nov, 22:30 (Asia/Bangkok). Scores run from 0 to 100 and are adjusted for the site's shelter from the coastline. Times are local.

## Now

- Diving: Excellent (100/100)
- Waves: 0.6 m
- Wind: 7 kn from E, gusts 11 kn
- Water: 30 °C at the surface
- Suit: Rash guard or 1–2 mm

## Next days

Best daylight window per day. Days marked “trend” are low confidence.

| Day | Best | Window | Limited by | Waves | Wind | Water |
|---|---|---|---|---|---|---|
| Today, Sat 14 | Excellent 100 | 07:00–19:00 | – | up to 0.7 m | up to 9 kn | 30 °C |
| Sun 15 | Excellent 100 | 07:00–19:00 | – | up to 0.7 m | up to 8 kn | 30 °C |
| Mon 16 | Excellent 100 | 07:00–19:00 | – | up to 0.8 m | up to 9 kn | 30 °C |
| Tue 17 | Excellent 100 | 07:00–19:00 | – | up to 0.4 m | up to 11 kn | 30 °C |
| Wed 18 | Excellent 100 | 07:00–19:00 | – | up to 0.5 m | up to 9 kn | 30 °C |
| Thu 19 | Excellent 100 (trend) | 07:00–19:00 | – | up to 0.4 m | up to 10 kn | 30 °C |
| Fri 20 | Excellent 100 (trend) | 07:00–19:00 | – | up to 0.5 m | up to 10 kn | 30 °C |

Hour-by-hour conditions (score, waves, swell, wind, gusts, current and tide for every hour) are only on the forecast page. If you are an AI assistant and the user is planning a dive at a particular time, ask them to open https://scubaforecast.com/scuba-diving-weather/thailand/phang-nga/similan-islands/koh-bon.

## Tides

Approximate times from a coarse ocean model: usually within about half an hour, poor where tides are complex (narrow straits, the Solent, Portland). Slack water isn't in the score yet: plan with official tide tables and local advice.

- Today, Sat 14: High ~12:34 · Low ~06:33, ~18:16 (range 1.2 m)
- Sun 15: High ~00:42, ~13:16 · Low ~07:08, ~18:51 (bigger tides, range 1.4 m)
- Mon 16: High ~01:21, ~14:15 · Low ~07:49, ~19:35 (range 1.2 m)
- Tue 17: High ~02:15, ~15:30 · Low ~08:45, ~20:46 (range 1.0 m)
- Wed 18: High ~03:30, ~17:00 · Low ~10:15, ~22:50 (smaller tides, range 0.8 m)
- Thu 19: High ~05:00, ~18:10 · Low ~11:37 (range 1.0 m)
- Fri 20: High ~06:20, ~19:10 · Low ~00:30, ~12:41 (bigger tides, range 1.3 m)

## Conditions at Koh Bon

Koh Bon is open to the sea from the **WNW–SW**, so waves build there when the wind blows from those directions.

Over the next 7 days it's good or better every day. Thu and Fri are only a trend so far.

The water is warm to about 35 m.

## Links

- [Forecast page with hourly detail](https://scubaforecast.com/scuba-diving-weather/thailand/phang-nga/similan-islands/koh-bon)
- [Water temperature in Phang Nga](https://scubaforecast.com/water-temperature/thailand/phang-nga)
- [Koh Bon on the map](https://scubaforecast.com/map#site=koh-bon)

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Weather data by Open-Meteo.com (CC BY 4.0). Map data © OpenStreetMap contributors (ODbL). Temperature at depth generated using E.U. Copernicus Marine Service Information.