New Delhi, May 24: The southwest monsoon reached Kerala on Saturday, marking its earliest onset over the Indian mainland since 2009 when it began on May 23, the India Meteorological Department (IMD) said. Normally, the southwest monsoon makes its onset over Kerala by June 1 and covers the entire country by July 8. It starts retreating from northwest India around September 17 and withdraws completely by October 15.

The monsoon set in over the southern state on May 30 last year; June 8 in 2023; May 29 in 2022; June 3 in 2021; June 1 in 2020; June 8 in 2019; and May 29 in 2018, IMD data showed. According to meteorologists, there is no direct relationship between the onset date and the total rainfall over the country during the season. India Weather Forecast: Southwest Monsoon 2025’s Onset Could Be the Earliest Since 2010, Predicts IMD.

Southwest Monsoon Reaches Kerala

Southwest Monsoon has set in over Kerala, today, 24th May against the normal date of 1st June. pic.twitter.com/wb0G0Bra2t

— ANI (@ANI) May 24, 2025

The monsoon arriving early or late in Kerala does not mean it will cover other parts of the country accordingly. It is characterised by large-scale variabilities and global, regional and local features, an official said. India Weather Forecast: IMD Issues Heavy Rainfall Alert for Multiple Regions Across Country Till May 24.

The IMD in April forecast above-normal cumulative rainfall in the 2025 monsoon season, ruling out the possibility of El Nino conditions, which are associated with below-normal rainfall in the Indian subcontinent.

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