Maharashtra

Maharashtra fronts the eastern Arabian Sea on India's west coast, with Mumbai on its long south-pointing peninsula at the centre, the Konkan coast running south through Ratnagiri toward Goa, and the rocky shore north toward Daman and the Gujarat border. The tide here is one of the larger ranges on the Indian subcontinent and the largest on India's west coast. The pattern at the Mumbai harbour gauge at Apollo Bunder is cleanly semidiurnal — two highs and two lows of comparable size about twelve and a half hours apart — with a mean range of about 2.4 metres, climbing past 4.5 metres on the largest spring tides and dropping near 1.5 on neaps. The dramatic spring-neap asymmetry is part of the local fishing rhythm and the Koli community on Versova Beach and at Sassoon Dock reads it for the boat-launch and beach-haul windows. The defining seasonal force is the south-west monsoon from June through September, which runs hard onshore winds against the coast and lifts apparent water levels well above predicted by stacking surge against the harbour mouth. Beach widths at Juhu, Marine Drive (the Queen's Necklace promenade is sea wall, not sand), Aksa, and Madh change visibly across each cycle. Bandra Bandstand's tide-pool ledges open up on the lowest spring lows. The Survey of India and the Indian National Centre for Ocean Information Services (INCOIS) publish the authoritative tide tables; Open-Meteo Marine drives the gridded predictions on this site. Tropical-cyclone season runs late summer through autumn and surge events can override the harmonic signal entirely.