Northeast Monsoon rains consist of rains that occur between the months of October and December, also known as post Monsoon rains. Overall, Northeast Monsoon ended on a normal note and except for the month of November, good rains were seen over the southern parts.
there are early precursors, showing signs of dwindling by recede of Northern Hemispheric winters. La Nina is expected to continue into the winters, albeit with equitable chance of La Nina and ENSO neutral during Jan-Mar 2023
The first triple-dip La Nina of the 21st century will continue to affect temperature and precipitation patterns. It will also exacerbate drought and flooding in different parts of the world. The continuation of La Nina for the 4th consecutive year does not find recorded in history, since 1950.
The movement of weather systems is fast, therefore chances of further intensification are less. Cyclone forms over Bay of Bengal and Arabian Sea until December. This system may not intensify into a cyclone, but it will be capable of giving moderate to heavy rain over many parts of Tamil Nadu on December 7 and 8.
La Nina conditions are not favourably related to the winter rainfall over South Peninsula. Northeast Monsoon rainfall has been inadequate in the month of November over South Interior Karnataka, Rayalaseema and Coastal Andhra Pradesh. For the 2nd successive year, the Indian Seas remained storm-free in November.