CHENNAI:Tamil Nadu is set to witness increased rainfall in the coming days, and according to weather blogger Pradeep John, popularly known as the Tamil Nadu Weatherman on social media, the summer season is effectively ending.

In a social media post, he said that chances of rain will rise across north TN, including Kancheepuram, Tiruvallur, Chennai and Chengalpattu (KTCC) regions.

Calling it one of the most unique years, John pointed out: “TN has experienced no heatwave in 2025. Notably, Chennai has not touched 40°C even once this May, similar to the years 2022, 2018, and 2004, a rare trend over the past 25 years,” said a Maalaimalar report. “The unusual early formation of an east-west shear zone, a weather pattern, is typically seen at the end of May or in early June. But this year, it appeared in mid-May for the first time.”

This development is expected to trigger low-pressure systems in both the Arabian Sea and Bay of Bengal by the end of May, with the Arabian Sea system likely to intensify into a cyclonic storm in the next 10 days.

Rain is likely in several districts including Krishnagiri, Salem, Tiruvannamalai, Vellore, Tiruvallur, Cuddalore, Puducherry, Villupuram, Perambalur, Kallakurichi, Karaikal, Nagapattinam, Thanjavur, Tiruchy, Dharmapuri, Tirupattur, and Erode. Heavy rains are also expected in Bengaluru.

“Although the intense heat is over, the temperatures will not drop to winter levels,” he stated. “Instead, May temperatures are expected to remain below the seasonal average, offering a cooler end to the summer season.”