The heavy rainfall is expected to impact Tamil Nadu, Puducherry, Karaikal, Kerala, Mahe, South Interior Karnataka, Lakshadweep, and parts of Coastal Andhra Pradesh. Localised flooding, waterlogging, and disruptions to daily life are possible in areas receiving very heavy rainfall. Agricultural activities may also be affected, particularly in regions experiencing prolonged wet spells. Residents in low-lying areas and those near water bodies should remain vigilant for potential flooding.