The two southernmost states Kerala and Tamil Nadu look so ideally located for similar weather conditions but are widely apart almost throughout the year. Both the states being contiguous share a long border and also have the distinction of having a long coastline. Both states have the credentials of being rainiest but at different times from each other. The only common thing to share is that both are in the equatorial belt.
Unlike northern parts of the country, the Pre-Monsoon season starts in March, immediately after the so-called winter season till February with hardly any overlap. Tamil Nadu, albeit is harsher than Kerala to absorb the early heat of pre-monsoon. There is a large variability noticed between the two states even within their 'Normals' for the ongoing summer season. While Kerala is on track with the pan India averages, Tamil Nadu does not seem to be recovering from the monthly and seasonal rain deficit as well.
As such Kerala rains nearly 04 times of Tamil Nadu in May and grows bigger in June to record more than 10 times. Due to the onset of Monsoon, June average for Kerala stands at 643mm whereas Tamil Nadu has a meager total of 54mm. For the next week, the trend is no different. Tamil Nadu will continue to be rain-starved and Kerala will have decent showers in most parts. The following week commencing 10th May possibly will bring welcome rains, maybe heavier at places for both the states. This is in anticipation of likely movement of a weather system closer to the coast, which presently is brewing far deep in the Bay of Bengal and the Andaman Sea.
