On May 13, the India Meteorological Department (IMD) confirmed the early arrival of the southwest monsoon over parts of the Bay of Bengal, south Andaman Sea, Nicobar Islands, and parts of north Andaman Sea. The monsoon, usually expected by May 18–19 in this region, has arrived several days ahead due to consistent rainfall, strong westerly winds, and favorable atmospheric conditions.

BulletsIn

• Monsoon hits Andaman & Nicobar early, confirmed by IMD on May 13
• Rain, wind data indicate monsoon’s advancement over Bay of Bengal
• Heavy showers observed across Nicobar Islands past 2 days
• Westerly winds >20 knots at 1.5 km altitude; reaching up to 4.5 km
• OLR levels dropped, indicating active monsoon conditions
• Normal monsoon onset for this region is around May 18–19
• Forecast: Kerala may get monsoon by May 27, ahead of June 1 norm
• Early rains expected to ease heat in southern, eastern India
• IMD says favourable conditions for further advance over Arabian Sea
• Above-normal rainfall likely across India during 2025 monsoon season