# Hirase: scuba diving weather

Boat dive · Zamami, Okinawa Prefecture · 26.1994, 127.3262

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: Fair (53/100), limited by waves
- Waves: 1.2 m
- Wind: 18 kn from SW, gusts 25 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 | Good 72 | 07:00–18:00 | – | up to 1.3 m | up to 15 kn | 26 °C |
| Mon 16 | Excellent 93 | 10:00–18:00 | – | up to 1.1 m | up to 10 kn | 26 °C |
| Tue 17 | Excellent 97 | 07:00–13:00 | – | up to 0.8 m | up to 12 kn | 26 °C |
| Wed 18 | Excellent 100 | 07:00–18:00 | – | up to 0.6 m | up to 12 kn | 26 °C |
| Thu 19 | Good 64 (trend) | 07:00–10:00 | – | up to 1.0 m | up to 18 kn | 26 °C |
| Fri 20 | Good 65 (trend) | 14:00–18:00 | – | up to 1.1 m | up to 16 kn | 26 °C |
| Sat 21 | Excellent 81 (trend) | 07:00–14:00 | – | up to 1.0 m | up to 18 kn | 26 °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/zamami/hirase-kerama.

## 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 ~10:48, ~21:40 · Low ~04:00, ~16:07 (range 1.2 m)
- Mon 16: High ~11:53, ~22:34 · Low ~04:54, ~17:20 (smaller tides, range 1.0 m)
- Tue 17: High ~13:17 · Low ~05:53, ~18:48 (smaller tides, range 0.9 m)
- Wed 18: High ~00:00, ~14:17 · Low ~07:06, ~20:17 (smaller tides, range 0.9 m)
- Thu 19: High ~01:48, ~15:06 · Low ~08:12, ~21:20 (smaller tides, range 1.0 m)
- Fri 20: High ~03:16, ~15:41 · Low ~09:15, ~22:04 (range 1.1 m)
- Sat 21: High ~04:15, ~16:15 · Low ~10:04, ~22:45 (bigger tides, range 1.5 m)

## Conditions at Hirase

Hirase is open to the sea from the **NNE, S–SSW**, so waves build there when the wind blows from those directions. Land shelters it from the ENE–SE, W–NW.

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 [Nishihama](https://scubaforecast.com/scuba-diving-weather/japan/okinawa-prefecture/zamami/nishihama) (3.4 km, sheltered from the NNE, S–SSW).

The water stays warm past 56 m.

## Links

- [Forecast page with hourly detail](https://scubaforecast.com/scuba-diving-weather/japan/okinawa-prefecture/zamami/hirase-kerama)
- [Water temperature in Okinawa Prefecture](https://scubaforecast.com/water-temperature/japan/okinawa-prefecture)
- [Hirase on the map](https://scubaforecast.com/map#site=hirase-kerama)

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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.