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Tamil Nadu weather update today: check district-wise rain forecast for Chennai, Thiruvallur, Ranipet, Dharmapuri, Vellore, and more

Tamil Nadu Weather Update Today: Check District-Wise Rain Forecast for Chennai, Tiruvallur, Kancheepuram, Ranipet, Tiruvannamalai, Kallakurichi, Ariyalur, Perambalur, Thanjavur, Tiruvarur, Nagapattinam, Karaikal, Salem, Tiruchirappalli, Vellore, Tirupattur, Dharmapuri, Pudukkottai & more.

Tamil Nadu Cyclone alert: Commuters make their way through a waterlogged road following heavy rainfall in Avadi, Tamil Nadu, on Wednesday (Photo: PTI).Tamil Nadu Cyclone alert: Commuters make their way through a waterlogged road following heavy rainfall in Avadi, Tamil Nadu, on Wednesday (Photo: PTI).

Tamil Nadu Weather Update Today: Tamil Nadu is being lashed by rain as a cyclonic circulation moves up from the South Bay of Bengal. As per the latest update by the India Meteorological Department (IMD), the Regional Meteorological Centre, Chennai, the IMD has issued a red alert for two districts and orange alert for eight.

District Name Max Temp (°C) Min Temp (°C)
Chennai (Meenambakkam) 27.6 (21/10) 24.7
Chennai (Nungambakkam) 28.2 (21/10) 25.1
Nagapattinam 27.1 (21/10) 24.3
Karaikal 26.4 (21/10) 24.4
Salem 26.6 (21/10) NA
Tiruchirappalli 25.7 (21/10) 24.0
Vellore 26.5 (21/10) NA
Dharmapuri 29.7 (21/10) NA

Check the latest Tamil Nadu cyclone and weather forecast updates here

Which districts are in the red zone?

The red alert has been issued for Thiruvallur and Ranipet, while the orange alert remains in place for Salem, Krishnagiri, Dharmapuri, Tirupathur, Krishnagiri, Vellore, Tiruvannamalai, Kancheepuram, Chengalpattu, and Chennai.

Tamil Nadu Weather Crisis Map
IMD Alert Status - October 22, 2025
Red AlertExtreme Danger - 2 Districts
Thiruvallur
Ranipet
Orange AlertHigh Danger - 8 Districts
Chennai
Kancheepuram
Chengalpattu
Salem
Vellore
Tiruvannamalai
Dharmapuri
Tirupattur
Expected Conditions
Light to Moderate rain with Thunderstorm and Lightning
Generally cloudy sky conditions
Cyclonic circulation from South Bay of Bengal
Source: India Meteorological Department, Regional Meteorological Centre, Chennai
Indian Express InfoGenIE

“The sky condition is likely to be generally cloudy. Light/Moderate rain with Thunderstorm and Lightning is likely,” states the latest forecast from IMD. For Wednesday, the forecast reads: “Squally weather with wind speed reaching 45 kmph to 55 kmph gusting to 65 kmph is likely to prevail along and off North Tamil Nadu coast-Puducherry-South Andhra Pradesh coasts and adjoining sea areas. Squally weather with wind speed reaching 35 kmph to 45 kmph gusting to 55 kmph is likely to prevail along and off South Tamil Nadu coast, over Gulf of Mannar and Comorin area.”

Similar conditions are expected on Thursday along the coasts of Tamil Nadu and Andhra Pradesh coasts over Gulf of Mannar and Comorin areas. The IMD has advised fishermen not to venture into the sea in these two days.

Chennai Weather Alert
Metropolitan Area Forecast - Oct 22-23, 2025
🟠 Orange Alert: High Danger Level
Sky Condition
Cloudy
Generally cloudy throughout
Rain Intensity
Moderate
With thunderstorm & lightning
Wind Speed Forecast
Normal Range
45-55
kmph
Gusting Up To
65
kmph
48-Hour Forecast Timeline
Wednesday
Squally weather along North TN coast, thunderstorm & lightning expected
Thursday
Similar conditions continue, cyclonic circulation persists over region
Cause: Cyclonic circulation from South Bay of Bengal | Source: IMD Chennai
Indian Express InfoGenIE

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