Diving and snorkeling in Tokashiki
Today, Thursday, October 29, 2026 · local time (GMT+9) · Okinawa, Japan Today, Thu, Oct 29 · GMT+9- Slack water
- 2:29–3:00 am, 8:50–9:40 am, 2:20–3:20 pm and 8:10–9:00 pm
- Swell
- 2.6 ft, 5 s
- Water and suit
- 80.6 °F · Shorty or a rash guard
- Likely visibility
- Fair
Today, Thursday, October 29, the best time to dive in Tokashiki is 1:30 pm to 3:40 pm, with slack water at low tide, light wind and the sun high, though with current. It's a good day (7/10). Visibility is likely fair. Water at 80.6 °F: a shorty or a rash guard. The best day this week is Friday, October 30, at 8/10.
Your diving day in Tokashiki at a glance
The strip runs from midnight to midnight, local time. Daylight on top; then the tide with its slack water (purple bands), the conditions hour by hour and the best times.
Today in detail
Likely visibility: fair- Slack water today: low tide 2:44 am (2:29–3:00 am), high tide 9:16 am (8:50–9:40 am), low tide 2:48 pm (2:20–3:20 pm) and high tide 8:37 pm (8:10–9:00 pm)
- Likely visibility: fair. Swell (up to 3.8 ft at 6 s) and wind over the last few days have stirred up the water. Based on the last 24 hours of data.
- Water at 80.6 °F: a shorty or a rash guard.
- Snorkeling: better not, with these waves, wind or current.
- Night dive: dark from 6:15 pm. Waning gibbous (88%), rising at 8:20 pm: a bright night.
How deep it gets off the shore
Shallow near shore: you only reach 33 ft at 0.8 mi. For dives deeper than 33 ft, go by boat.
Source: NOAA ETOPO 2022 (CC0), cells of about 0.3 mi. For reference only: not for navigation or anchoring.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
Never dive alone and check with the local dive shop: this rating is a guide, not a substitute for a professional.
Diving forecast for the next 7 days
| Day | Rating | Best times | Swell | Visibility | Water |
|---|---|---|---|---|---|
| Today | 7 good day | 1:30–3:40 pm9:10–10:20 am | 2.6 ft · 5 s | Fair | 80.6 °F · Shorty or a rash guard |
| Fri 30 | 8 good day | 9:10–11:30 am | 1.8 ft · 5 s | Fair | 80.6 °F · Shorty or a rash guard |
| Sat 31 | 6 average day | 10:00 am–1:00 pm3:30–5:50 pm | 1.5 ft · 6 s | Fair | 80.6 °F · Shorty or a rash guard |
| Sun 1 | 6 average day | 11:00 am–2:00 pm4:20–5:30 pm | 3.1 ft · 13 s | Fair | 80.4 °F · Shorty or a rash guard |
| Mon 2 | 8 good day | 11:40 am–2:40 pm4:10–5:50 pm | 2.3 ft · 9 s | Fair | 80.4 °F · Shorty or a rash guard |
| Tue 3 | 2 poor day | 2:20–4:50 pm7:00–10:00 am | 4.7 ft · 12 s | Fair | 80.2 °F · Shorty or a rash guard |
| Wed 4 | 2 poor day | 2:20–5:20 pm10:30–11:10 am | 6.0 ft · 11 s | Poor | 80.1 °F · Shorty or a rash guard |
Each day's rating comes from the swell, waves, wind, current, slack water, daylight and likely visibility. The forecast reaches about 7 days.
Dive sites, wrecks and dive shops nearby
Map: OpenFreeMap · © OpenMapTiles · © OpenStreetMap contributors
- ウフタマ 2.9 mi
- シル東 3.6 mi
- アダン前 4.5 mi
- 安慶名敷枝サンゴ・あげなしくえださんご 4.5 mi
- 西浜・にしはま 4.6 mi
- 慶良間諸島国立公園 2.8 mi
- 野崎 1.6 mi
- マリンクラブシーカム 2.1 mi
- Vibgyor 2.1 mi
- シーフレンド 2.1 mi
- Prism Dive 2.2 mi
- あなたの清 4.2 mi
Within 12 mi. Some may be missing or closed; marine reserves usually need a permit. Open the map on OpenStreetMap · Missing one? Add it to OpenStreetMap
Sites: © OpenStreetMap contributors (ODbL).
Coral in the area
NOAA's Coral Reef Watch satellites track water heat on coral reefs every day. In the “Northern Ryukyu Islands, Japan” area, which this place is in, on October 27: No heat stress: the water isn't warmer than coral can comfortably handle.
- Alert level
- No heat stress
- Heat build-up (12 weeks)
- 0.2 °C-weeks · falling
- Water vs. normal
- 2.2 °F warmer than normal
Heat build-up adds up, week by week over the last three months, how far the water goes above its normal summer maximum. According to Coral Reef Watch, significant bleaching is likely from 4 °C-weeks and severe bleaching with mortality from 8.
Satellite: NOAA Coral Reef Watch (reef areas, 3.1 mi pixels). It covers the whole area, not this exact spot. Sources and licenses
How we work out the diving rating
We score every moment of the day, every 10 minutes, from 0 to 10, with simple fixed rules:
- Swell: takes points away based on its height and period (a 10 s swell weighs 50% more than a 6 s one, because it reaches deeper and moves the bottom): nothing under 1.6 ft, up to 6.5 points from 9.8 ft. Surface waves count for getting in and out; we take the worse of the two.
- Wind: takes points away from force 4, about 12 mph (1 point), up to 6 points in a gale; half a point more when it blows offshore, because it pushes surface swimmers away from shore.
- Current: Météo-France's model current takes points away from half a knot (1 point) up to 6 points from 2 knots.
- Slack water: where we show the tide, up to 3 points come off when the water rises or falls fast (mid-tide, especially on spring tides) and none at slack, around each high and low tide.
- Light: half a point more with the sun high (3 hours either side of solar noon), 1.5 less at twilight and 3 less at night. Thunderstorms take away 5 and heavy rain 1.
- Likely visibility: good, fair or poor from the swell of the previous 48 hours, the rain of the previous 72 and the wind of the previous 24. Fair takes 1 point off the day's rating and poor, 2.
- Day's rating: the average of the best window (the stretch of 40 minutes to 3 hours with the best conditions), adjusted for likely visibility.
- Wetsuit, by water temperature: below 50 °F, drysuit; from 50 °F, 7 mm semi-dry; from 57 °F, 7 mm wetsuit; from 64 °F, 5 mm; from 72 °F, 3 mm; from 79 °F, shorty or rash guard.
Today: the best window scores 8.2 out of 10 and visibility is likely fair, so it takes 1 off.
It's an estimate from the swell, rain and wind of the previous days, not a measurement: real visibility also depends on the bottom, plankton and nearby rivers.
Slack water comes from the tide: in inlets, channels and between islands the water can keep running for an hour or two after. Ask the local dive shop.
It is a guide built from models, not a guarantee: every site has its own currents and bottom. Look at the water when you get there and ask the dive shop.
Before you get in the water
- Never dive alone: always with a buddy and, if you don't know the site, with a dive shop.
- Check with the local dive shop or club: they know the currents, the no-dive zones and how the water is today.
- Dive within your certification and experience, and stay within depth and no-decompression limits.
- Fly a dive flag (diver-down or alpha flag) on a float and watch for boat traffic.
- Marine reserves need a permit and often have quotas: ask before you go.
- This rating doesn't replace a professional's judgment or what you see when you arrive: if the sea doesn't look right, don't go in.
Questions about diving in Tokashiki
Can you dive in Tokashiki today?
Today is a good day (7/10). The best time is 1:30 pm to 3:40 pm, with slack water at low tide, light wind and the sun high, though with current.
What about tomorrow? When's the best time to dive in Tokashiki?
Tomorrow, Friday, October 30: 9:10 am to 11:30 am, with a rating of 8/10.
Which day this week is best for diving in Tokashiki?
Friday, October 30, at 8/10. Its best time is 9:10 am to 11:30 am.
When is slack water in Tokashiki today?
Today the water barely runs at these times: low tide 2:44 am (2:29–3:00 am), high tide 9:16 am (8:50–9:40 am), low tide 2:48 pm (2:20–3:20 pm) and high tide 8:37 pm (8:10–9:00 pm). It's an estimate from the tide: in inlets and channels slack water can come later. Ask the local dive shop.
What will the visibility be like in Tokashiki?
Likely fair. Swell (up to 3.8 ft at 6 s) and wind over the last few days have stirred up the water. Based on the last 24 hours of data. It's an estimate, not a measurement.
What wetsuit do I need to dive in Tokashiki?
Water at 80.6 °F: a shorty or a rash guard. If you get cold easily or plan several dives, go thicker.
Can you dive at night?
Yes, with experience, a primary and a backup light, and ideally with a dive shop. Night dive: dark from 6:15 pm. Waning gibbous (88%), rising at 8:20 pm: a bright night.
How is the rating worked out?
From the swell and its period, the waves, the wind, the current, slack water, daylight and likely visibility. Each factor adds or takes away a fixed number of points and the rating sums up the best window of the day out of 10.
More about Tokashiki today
Learn more
Our own calculation: tide from Naha (TICON-4), sun and moon with astronomy-engine, and sea and weather from Open-Meteo (Météo-France, ECMWF, NOAA GFS and Copernicus Marine, CC BY 4.0). Dive sites: © OpenStreetMap contributors (ODbL). Slackwater database (https://github.com/openwatersio/slackwater-database). Source: Hart-Davis, M., Dettmering, D., Seitz, F. (2025), TICON-4: TIdal CONstants based on GESLA-4 sea-level records, SEANOE, https://doi.org/10.17882/109129. Licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/). Modified: see https://github.com/openwatersio/slackwater-database#modifications-to-source-data