Naha tide times

Mean tidal range at Naha is approximately 1.5 metres above MLLW, in a mixed-semidiurnal pattern with two unequal daily highs and lows. Diurnal inequality can produce a lower-low more than 0.5 metres below the higher-low on the same day. For reef access, this matters significantly: the coral reef flats that ring most of Okinawa Island are at or near the surface at mean water level. A 0.5 to 1.0 metre drop in water level can expose large sections of reef flat, shifting snorkel and dive sites from swimmable to ankle-deep wading zones. Checking tide state before heading to any reef on the Naha coast is the baseline habit for anyone spending time in the water.

Shuri Castle's main hall (Seiden) burned in a fire on 31 October 2019. The outer complex — Shureimon gate, Kankaimon gate, the perimeter walls, and several secondary buildings — was undamaged and remains accessible. Reconstruction of the Seiden is ongoing as of 2025 under a framework funded by national and prefectural government; the target for reopening the main hall to visitors is 2026. The reconstruction uses traditional Ryukyuan architecture methods where possible. The wider UNESCO World Heritage designation of the Gusuku Sites of the Ryukyu Kingdom remains in effect and was not affected by the fire.

High-speed ferries from Naha Ferry Terminal connect to Zamami Island (approximately 35 minutes, Zamami-son Ferry) and Tokashiki Island (approximately 35 minutes, Tokashikimura Ferry). Slower car ferries also operate on both routes. Day trips are feasible — the last return ferries depart in late afternoon. The Keramas are the closest high-quality snorkel and dive destination to Naha; humpback whale watching operates in the channel between the islands from January through March. Booking ferry tickets in advance is advisable during Japanese holiday periods (Golden Week, Obon, New Year).

Okinawan cuisine has distinct roots from mainland Japanese cooking, shaped by the Ryukyu Kingdom's trade connections and subtropical food culture. Goya champuru (bitter melon stir-fried with tofu and pork or spam) is the signature dish. Rafute is braised pork belly in awamori and soy; taco rice (a local adaptation of tacos over rice, originating near US military bases) is ubiquitous. Awamori, distilled from Thai long-grain rice rather than Japanese short-grain, is the local spirit. The Makishi Public Market in central Naha (renovated and reopened 2023) is the most direct access to the prefecture's food culture — fresh reef fish, prepared foods, and awamori under one roof.

No. Predictions here come from Open-Meteo Marine, a gridded global ocean model that estimates tidal heights and timing from astronomical inputs. Accuracy is typically within plus or minus 45 minutes on timing and 0.2 to 0.3 metres on height relative to observed levels. For safety-critical decisions — navigation, commercial diving, or any situation where precise water levels matter — use the Japan Meteorological Agency's official tide tables at jma.go.jp. JMA publishes authoritative predictions for reference stations across Okinawa Prefecture. This page is a planning and reference tool, not a substitute for official data.