Alappuzha: Kerala is witnessing a noticeable drop in night temperatures with the arrival of northeast winds, bringing a spell of chilly weather to the state after several years. The lowest temperature on Saturday was recorded at Kundala Dam in Idukki, where the mercury dropped to 7.9 degrees Celsius.

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High-range regions are experiencing the most pronounced temperature drop. Munnar recorded 9.7 degrees Celsius, while Vattavada registered 10.9 degrees Celsius.

Kundala, Munnar, Vattavada and Kanthalloor have been experiencing cold conditions and dense mist during the early morning hours. The chill is also being felt across tea plantations in the region.

Why are temperatures dropping?

The arrival of northeast winds carrying colder air from northern India is one of the key factors behind the drop in night temperatures.

Clear skies following the withdrawal of the northeast monsoon have also contributed to the cooling. With fewer clouds, heat absorbed by the Earth's surface during the day escapes more rapidly into the atmosphere at night, resulting in lower temperatures.

However, the daytime weather remains relatively warm, with temperatures ranging between 32 and 35 degrees Celsius in several parts of Kerala.

Rainfall deficit in Kerala

Kerala has recorded a 21 per cent rainfall deficit between October 1 and November 14. Against the normal rainfall of 404.3 mm during this period, the state received only 321 mm.

Weather observers expect the chilly conditions to continue over the coming days, with temperatures likely to drop further by mid-December.