October 20, 2026
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IMD Forecasts Heavy Rain for Coastal Andhra, South Interior Karnataka

October 20, 2026 By IPB News Desk Reviewed by Shivanee Thote, Editorial Head 2 min read
Rain clouds over the Agasthiyamalai range of the Western Ghats between Kerala and Tamil Nadu

Image: PlaneMad / Wikimedia Commons

The India Meteorological Department (IMD) has forecast isolated heavy rain over coastal Andhra Pradesh on October 20 and 21, and over south interior Karnataka from October 21 to 24, as the northeast monsoon stays active over south India. Thunderstorms with lightning and gusty winds are also likely over Telangana, Rayalaseema and coastal Karnataka, according to IMD’s mid-day bulletin on Monday, October 19.

Gusty Winds of 40–50 km/h Over Coastal Andhra

IMD said thunderstorms with gusts of 40–50 km/h are likely over coastal Andhra Pradesh on Tuesday, October 20, and again on October 21. Rayalaseema and Telangana may see gusts of 30–40 km/h. Strong surface winds are also likely over Andhra Pradesh from October 19 to 21.

On October 21, IMD’s heavy rain warning widens to cover all of Andhra Pradesh, including Rayalaseema. Telangana is expected to get isolated to scattered showers with lightning till October 21, The Week reported.

Lightning Over Coastal Karnataka

Lightning is likely at isolated places over coastal Karnataka from October 20 to 23, IMD said. Subramanya in Dakshina Kannada district recorded 9 cm of rain in the 24 hours to 8:30 am on Monday. Mangaluru, Udupi and Karwar may get isolated rain till October 22, India.com reported.

South interior Karnataka is expected to see heavy rain at isolated places from October 21 to 24, with gusts of 30–40 km/h on some of those days.

Fishermen Told to Avoid Karnataka Coast From Oct 22

IMD has advised fishermen not to venture into the sea along and off the Kerala, Karnataka and Lakshadweep coasts from October 22 to 24, and into the southwest Arabian Sea till October 22, where a well-marked low pressure area may strengthen into a depression. No warning has been issued for the Bay of Bengal.

Squally weather with wind speeds of 40–50 km/h, gusting to 60 km/h, is expected over the southwest Arabian Sea, IMD said.

Rain is also continuing in Tamil Nadu and Kerala, as covered in our report on the Arabian Sea low and south India rain and Chennai’s heavy rain. IMD expects Tamil Nadu to get very heavy rain till October 21, with heavy spells continuing across the south through October 25. More on our Weather Updates page.

Based on IMD and reporting by The Week and India.com.

Image: PlaneMad / Wikimedia Commons (rain clouds over the Western Ghats).

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