# Sunabe – Chatan: scuba diving weather

Shore dive · Okinawa Island, Okinawa Prefecture · 26.3214, 127.7481

Updated Sun 15 Nov, 00:30 (Asia/Tokyo). Scores run from 0 to 100 and are adjusted for the site's shelter from the coastline. Times are local.

## Now

- Diving: Excellent (91/100)
- Waves: 0.4 m
- Wind: 11 kn from SW, gusts 22 kn
- Water: 26 °C at the surface
- Suit: 3 mm wetsuit

## Next days

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

| Day | Best | Window | Limited by | Waves | Wind | Water |
|---|---|---|---|---|---|---|
| Today, Sun 15 | Excellent 84 | 07:00–14:00 | – | up to 1.0 m | up to 9 kn | 26 °C |
| Mon 16 | Excellent 97 | 10:00–18:00 | – | up to 0.9 m | up to 5 kn | 26 °C |
| Tue 17 | Excellent 100 | 07:00–15:00 | – | up to 0.6 m | up to 9 kn | 26 °C |
| Wed 18 | Excellent 100 | 07:00–18:00 | – | up to 0.6 m | up to 9 kn | 26 °C |
| Thu 19 | Fair 47 (trend) | 07:00–12:00 | waves | up to 1.2 m | up to 12 kn | 26 °C |
| Fri 20 | Fair 49 (trend) | 07:00–18:00 | waves | up to 1.2 m | up to 12 kn | 25 °C |
| Sat 21 | Good 72 (trend) | 07:00–09:00 | – | up to 1.0 m | up to 9 kn | 25 °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/japan/okinawa-prefecture/okinawa-island/sunabe-chatan.

## 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, Sun 15: High ~10:54, ~21:48 · Low ~04:10, ~16:20 (range 1.2 m)
- Mon 16: High ~12:10, ~22:42 · Low ~05:00, ~17:34 (smaller tides, range 1.0 m)
- Tue 17: High ~13:20 · Low ~06:00, ~19:00 (smaller tides, range 0.9 m)
- Wed 18: High ~00:08, ~14:22 · Low ~07:13, ~20:25 (smaller tides, range 0.9 m)
- Thu 19: High ~01:51, ~15:16 · Low ~08:20, ~21:26 (smaller tides, range 1.0 m)
- Fri 20: High ~03:24, ~15:46 · Low ~09:23, ~22:13 (range 1.2 m)
- Sat 21: High ~04:25, ~16:22 · Low ~10:10, ~22:53 (bigger tides, range 1.5 m)

## Conditions at Sunabe – Chatan

Sunabe – Chatan is open to the sea from the **WSW–NNW**, so waves build there when the wind blows from those directions. Land shelters it from the N–SSE.

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

When it's rough here, try [Blue Cave](https://scubaforecast.com/scuba-diving-weather/japan/okinawa-prefecture/okinawa-island/blue-cave-okinawa-island) (14 km, sheltered from the WSW–WNW).

The water stays warm past 11 m.

## Links

- [Forecast page with hourly detail](https://scubaforecast.com/scuba-diving-weather/japan/okinawa-prefecture/okinawa-island/sunabe-chatan)
- [Water temperature in Okinawa Prefecture](https://scubaforecast.com/water-temperature/japan/okinawa-prefecture)
- [Sunabe – Chatan on the map](https://scubaforecast.com/map#site=sunabe-chatan)

---

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.