George Town (Penang) tide times

George Town sits on the northeastern shore of Pulau Pinang facing the Penang Channel and the mainland strip of Seberang Perai across two kilometres of working water. The Strait of Malacca runs north and south of the island, the long shipping corridor between Sumatra and the Malay Peninsula that funnels Indian Ocean tidal energy and carries roughly a quarter of the world's seaborne trade past the Penang approaches. The tide here is semidiurnal with a moderate range that the strait geometry amplifies as the open-ocean signal propagates north toward the Andaman Sea.

2 on neaps. Two highs and two lows about twelve and a half hours apart, the timing predictable enough that the ferry skippers running between Weld Quay and Butterworth and the channel pilots guiding container traffic to Penang Port read the table closely. The George Town heritage zone — the UNESCO-listed colonial-era core of clan jetties, shophouses, and the Cheong Fatt Tze mansion — faces the channel from the eastern edge of the island and stays sheltered from open Andaman Sea swell.

Tan Jetty, Lim Jetty, and the other clan jetties extend on stilts over the channel mudflats; the timber walkways sit above the mean spring high but the underside reveals shellfish-encrusted pilings at low water. The Penang Bridge to the south of the city and the Penang Second Bridge further south span the same channel and carry the cross-strait traffic between the island and the mainland. North along the island coast, Gurney Drive's reclaimed-land seafront and the hawker centre at the eastern end overlook the channel at high tide and a wide mudflat at low; further north the coast opens to Tanjung Tokong, Batu Ferringhi, and the resort beaches of the northern shore which face more directly into the strait and pick up the southwest monsoon swell from May through September.

The northeast monsoon from November through March turns the wind around and reduces the swell on the open western shore. Fishers working the channel for tropical shrimp, ikan kembung mackerel, and the seasonal barramundi run target the slack water between flood and ebb — about 30 to 45 minutes either side of the predicted high or low. The mid-tide windows are the working bracket for the small-boat operators running between the clan-jetty piers and the mainland fishing villages around Butterworth and Bagan Ajam.

Mudflat clam-diggers on the Seberang Perai mainland side walk the exposed banks at the lowest spring lows for kerang and the tropical mud crabs that local restaurants serve as kepiting masak lemak — the harvest window opens roughly two hours before the predicted low and closes within 30 minutes of the turn. The strait is also the working ground for pole-and-line baitfish operations that supply the larger Penang seafood industry, and the kelong-style fixed fishing platforms that survive in pockets along the Seberang Perai shore read the same daily tide table. Beach-walkers at the Tanjung Tokong waterfront and shore photographers working the long reflection at the Esplanade headland near Fort Cornwallis time their sessions to the predicted highs at dawn and dusk for the cleanest water against the colonial-era seawall.

The predictions on this page come from Open-Meteo Marine, a free gridded global ocean model that estimates tidal height across a geographic grid rather than from a measured harmonic record at a single gauge. 3 metres on height — small relative to Penang's two-metre mean swing but worth knowing when planning around a precise water level. For navigation, port operations, and any activity where exact water level matters, the Department of Survey and Mapping Malaysia (JUPEM) and the National Hydrographic Centre publish the authoritative Malaysian tide tables for the Pulau Pinang gauge, and Penang Port Authority pilotage guidance is the operational reference for the commercial channel traffic.