Longdong Bay Diving Tides

Before diving at Longdong Bay, check tide turns and wave conditions. Slack-water timing is only a reference; follow instructors, local rules and site conditions.

Longdong Bay: seven-day slack water and daylight

Each slack-water range is estimated as 60 minutes either side of high or low tide. The stronger-daylight range is four hours centred on the midpoint between sunrise and sunset. Both are planning windows, not declarations that conditions are safe.

Date	Estimated slack water	Today's Tide Range	Moon phase / light	Sunrise / sunset	Stronger daylight estimate
2026-10-19	Low Tide 08:39 (07:39–09:39) · High Tide 16:49 (15:49–17:49)	Neap tide · 0.56 m	First Quarter 55%	05:51 / 17:22	09:37–13:37
2026-10-20	Low Tide 09:46 (08:46–10:46) · High Tide 16:50 (15:50–17:50) · Low Tide 23:17 (22:17–00:17)	Neap tide · 0.57 m	Waxing Gibbous 64%	05:51 / 17:21	09:36–13:36
2026-10-21	High Tide 02:33 (01:33–03:33) · Low Tide 10:33 (09:33–11:33) · High Tide 16:58 (15:58–17:58) · Low Tide 23:18 (22:18–00:18)	Neap tide · 0.58 m	Waxing Gibbous 73%	05:52 / 17:20	09:36–13:36
2026-10-22	High Tide 03:52 (02:52–04:52) · Low Tide 11:10 (10:10–12:10) · High Tide 17:05 (16:05–18:05) · Low Tide 23:37 (22:37–00:37)	Neap tide · 0.6 m	Waxing Gibbous 82%	05:53 / 17:20	09:36–13:36
2026-10-23	High Tide 04:39 (03:39–05:39) · Low Tide 11:43 (10:43–12:43) · High Tide 17:12 (16:12–18:12)	Neap tide · 0.6 m	Waxing Gibbous 89%	05:53 / 17:19	09:36–13:36
2026-10-24	Low Tide 00:04 (23:04–01:04) · High Tide 05:21 (04:21–06:21) · Low Tide 12:15 (11:15–13:15) · High Tide 17:24 (16:24–18:24)	Mid tide · 0.62 m	Waxing Gibbous 95%	05:54 / 17:18	09:36–13:36
2026-10-25	Low Tide 00:35 (23:35–01:35) · High Tide 06:04 (05:04–07:04) · Low Tide 12:47 (11:47–13:47) · High Tide 17:43 (16:43–18:43)	Mid tide · 0.8 m	Waxing Gibbous 99%	05:54 / 17:17	09:36–13:36

Tidal range, spring and neap tides, and the Moon

Spring tides often occur near new and full moon, with a larger difference between high and low water and potentially stronger flow during the middle of the turn. Neap tides are more common near first and last quarter. Local current is not set by astronomical tide alone: wind, swell, seabed shape, and narrow harbor entrances all alter what divers encounter.

Spring tides usually occur near new and full moon and have the largest tidal range; mid and neap tides have progressively smaller ranges.

Sunrise, sunset, and underwater light

Once the Sun is higher, its light travels a shorter path through the water. In clear water with a settled surface, the hours around solar noon usually reveal terrain and color better. Low-angle light at dawn and dusk fades faster underwater. The table's daylight window is not a visibility forecast; suspended sediment, runoff, and waves remain decisive.

Verified access, entry and facilities

Only official or owner-confirmed information is shown. Unverified drafts stay off the page. Check same-day notices and on-site controls before departure.

Getting there with equipment

Longdong Bay Ocean Park dive service area is at No. 63-8 Longdong Street. Opening and admission are posted dynamically, so check the operator on the day before arriving with equipment rather than relying on a map status. Official source
For public transport with gear, alight at Longdong Bay Ocean Park. Official information lists routes 856, 791, 886, F837, F839 and the holiday coastal line; confirm timetables and equipment rules with the operator. Official source

Water entry and exit

The managed water access described officially is inside the ocean park: its marine activity area, natural seawater pool and dive service zone. Do not treat adjacent rocky shores or the controlled geopark coast as the same free entry. Official source
Long-period waves are common during the northeast monsoon from October through March, and the authority explicitly advises against seaside recreation. An open land area does not mean the water is open. Official source

Rinsing, parking and facilities

Official park facilities include parking, toilets, an accessible toilet and accessible parking. These are park services and remain subject to the day’s opening and admission notice. Official source
The Northeast Coast administration’s green-travel guide specifically points divers to equipment-rinsing services at nearby businesses. This is not a guaranteed free public facility, so confirm with the shop first. Official source

Rules and ecological care

The park is an ecological restoration zone and prohibits nets and harvesting tools. Keep the dive observational: do not collect, chase or remove marine life from its habitat. Official source
The Bitou–Longdong Geopark coastal line is currently controlled and requires prior approval from the administration. Admission to the dive service area is not permission to enter that coast. Official source

FAQ

Should I dive on a rising or falling tide?

What matters is slack water, not rising vs falling — the current is weakest around high and low tide, which is best for shore diving and snorkelling. Mid-tide has the strongest, most dangerous current. Match your entry to that day’s tide times and aim for the slack window.

How do I know the best time to get in today?

Check today’s high and low tide times on this page; the roughly 1-hour window around each turning point is slack water with the weakest current. Still confirm the day’s wind, swell, visibility and weather, and defer to your dive shop and on-site notices.

Can I enter the water as soon as the table shows slack water?

No. Slack water is only an estimated period around an astronomical tide turn. Waves, local current, visibility, entry and exit conditions, and closures still require an on-site check. Use a qualified instructor or guide when your training or knowledge of the site is not sufficient.

Is the water at Longdong Bay Ocean Park open today?

Check the operator’s same-day notice. Official information says opening and admission vary, and seaside water activities are explicitly discouraged during the October–March long-wave season.

Tide times and heights come from the site's daily CWA forecast. Sunrise, sunset, and lunar phase are calculated at build time with the same astronomy engine used by the live pages.

Open full tide page

Related tools: Tide Forecast · Diving Tides · Fishing Index · Sunrise & Sunset