Naha tide times

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived.

Model-derived from a global ocean grid. Useful indication; expect about ±45 minutes on average vs. a local harmonic gauge, individual stations vary widely. See /methodology for per-region detail. Not for navigation.

Conditions as of 13:00 local time. Refreshes daily.

Predictions: Open-Meteo Marine (MeteoFrance SMOC, 0.08° grid) — heights relative to MSL (not chart datum / LAT). Model-derived. · Not for navigation.

The angler tradition for major/minor fishing windows: major ≈3-hour windows around moon transit and opposition; minor ≈2-hour windows around moonrise and moonset. Times are Asia/Tokyo local. Folk tradition, not a scientific forecast.

Last spring tide on Thu 07 May (range 1.3m). Next spring tide on Wed 13 May (range 1.3m). Next neap on Sat 09 May.

Spring tides cluster around new and full moons (biggest swings). Neap tides land on quarter moons (smallest swings). See the spring tide and neap tide glossary entries for the why.

Naha is the capital and main port of Okinawa Prefecture, situated on the southwest coast of Okinawa Island at the northern end of the Ryukyu chain. The tidal regime is mixed semidiurnal: two unequal highs and two unequal lows per day, with diurnal inequality meaning one of the two low tides each day is often substantially lower than the other. Mean tidal range at Naha is approximately 1.5 metres above MLLW. The mixed-semidiurnal pattern means that on some days the lower of the two daily lows drops more than 0.5 metres below the higher low — a difference that matters considerably for reef flat access around the island. Shuri Castle, 4 kilometres northeast of the harbour, was the palace of the Ryukyu Kingdom from its founding in 1429 through annexation by Japan in 1879. It was designated UNESCO World Heritage in 2000, a recognition of the Ryukyu Kingdom's distinct culture, language, and regional trading connections across East Asia. The main hall (Seiden) burned in a fire in October 2019 and is currently under reconstruction (restoration work ongoing as of 2025, with full reopening targeted for 2026). The outer complex, including the Kankaimon gate, Shureimon gate, and the surrounding ramparts, remains accessible. Naha's port handles inter-island ferries to the outer Ryukyu islands (Miyakojima, Ishigaki, Kerama Islands), cruise ship arrivals, and the cargo traffic that supplies a prefecture that produces very little of its own food. The Naha Ferry Terminal is a busy transit point; departure schedules from Naha to Miyakojima take approximately 10 to 12 hours overnight, to Ishigaki approximately 12 to 14 hours. The Kerama Islands — three main islands 30 kilometres west of Naha — are the closest high-quality dive and snorkel destination from the city. Kerama Blue is the local term for the distinctively clear, deep-blue water around the islands, fed by clean Pacific inflow from the Kuroshio Current. Day trips by high-speed ferry from Naha take approximately 35 minutes to Zamami Island (Kerama). The coral reef systems around the Keramas are among the best-preserved in Japan; humpback whales use the area as a winter breeding ground (January through March). Kokusai-dori (International Street) is the tourist artery of central Naha, running 1.6 kilometres from the monorail station through the commercial centre. Makishi Public Market (Daiichi Makishi Koshin Ichiba), rebuilt and reopened in 2023 after renovation, is the central food market — awamori (Okinawan rice spirit), goya champuru (bitter melon stir-fry), rafute (braised pork belly), and fresh fish from the morning's landings are the food pillars of the prefecture. Tide predictions on this page come from Open-Meteo Marine, a gridded global ocean model. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height — model-derived, not from a local pressure gauge. For authoritative Okinawan tide data, consult the Japan Meteorological Agency at jma.go.jp.