Weather dept forecasts heavy rains in many districts of TN till May 20

IANS May 17, 2025 462 views

The Regional Meteorological Centre has forecast heavy rain in various Tamil Nadu districts until May 20, citing an upper air circulation. This weather system is expected to provide much-needed relief from the typical summer heat. Meteorologists also report an early southwest monsoon influencing weather patterns, contributing to below-normal temperatures. Notably, Chennai, which often experiences scorching May temperatures, may not cross the 40-degree Celsius mark this year.

"There has been no heatwave so far, and Chennai is unlikely to cross 40 degree Celsius." - Pradeep John
Weather dept forecasts heavy rains in many districts of TN till May 20
Chennai, May 17: The Regional Meteorological Centre (RMC) has predicted heavy rains in many districts of Tamil Nadu till May 20.

Key Points

1

RMC forecasts heavy rainfall across Tamil Nadu till May 20

2

Rain brings respite from summer heat and humidity

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Upper air circulation and early monsoon influence weather

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Districts across TN to experience varying rainfall patterns over the week

The RMC has attributed the shift in weather to an upper air circulation, which is expected to bring heavy showers to several parts of the state over the next few days.

The summer heat has eased across Tamil Nadu, with widespread rainfall bringing much-needed relief from the sweltering and humid conditions.

According to the RMC forecast, heavy rainfall is likely on Saturday in the northern districts of Krishnagiri, Dharmapuri, Salem, Namakkal, Tirupattur, Vellore, Ranipet, Tiruvallur, and Tiruvannamalai.

By Sunday, the rain is expected to shift southward, affecting districts such as Thanjavur, Tiruvarur, Mayiladuthurai, Nagapattinam, Pudukkottai, Ariyalur, Perambalur, Tiruchy, Salem, and Kallakurichi.

The wet spell is likely to persist until May 20.

Meteorologists also noted that the early advancement of the southwest monsoon is influencing the current weather pattern.

Systems are forming over both the Arabian Sea and the Bay of Bengal, helping cut short the intense summer spell typically experienced in May.

Chennai, which often records temperatures above 40 degree Celsius during this month, has yet to breach that mark this year.

If the prevailing conditions hold, the city may completely avoid hitting the 40 degree Celsius threshold this summer.

Weather expert Pradeep John described the ongoing season as "one of the most unique" in recent memory.

"There has been no heatwave so far, and Chennai is unlikely to cross 40 degree Celsius -- similar to what we saw in 2022, 2018, and 2004," he noted.

By the weekend, the upper air circulation is expected to move closer to the coast, with easterly winds influencing regions such as Kancheepuram, Tiruvallur, Chennai, and Chengalpattu, bringing moderate to heavy rain.

Despite no 40 degree Celsius days so far, the RMC clarified that temperatures hovered slightly above normal earlier in May.

Combined with high humidity, this made for uncomfortable weather during the first half of the month.

However, below-normal maximum temperatures are expected in the coming week, thanks to consistent cloud cover and continued rainfall.

Reader Comments

S
Saranya K.
Finally some relief from the unbearable heat! 😊 The last few weeks were torture with the humidity. Hope the rains don't cause flooding though - our storm drains in Chennai still need improvement.
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Ramesh P.
Good news for farmers in delta districts! The early monsoon and these rains will help with summer crops. But government should issue proper advisories - last year's unseasonal rains damaged many standing crops.
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Priya M.
As someone who works outdoors, this weather change is a blessing. But I worry about laborers and daily wage workers - heavy rains mean no work for many. Government should arrange temporary shelters.
K
Karthik V.
While the rains are welcome, our weather department needs better forecasting models. Last month they predicted a heatwave that never came. Now heavy rains? Hope they're right this time!
M
Meena S.
My children's summer vacation plans are ruined 😅 But health comes first - no more heat strokes! Corporation should ensure water doesn't stagnate and become breeding ground for mosquitoes though.
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Arjun T.
This is climate change in action. We're seeing patterns never observed before. While immediate relief is good, long-term we need better urban planning and water management systems in TN.

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Chennai Weather Tamil Nadu Rain Forecast Regional Meteorological Centre Pradeep John Upper Air Circulation