Tamil Nadu fishing ban from Oct 25 as cyclone threat looms over Bay of Bengal
Synopsis
Tamil Nadu has imposed a five-day fishing ban from 25 October as a potential cyclonic storm brews over the Bay of Bengal. With heavy to very heavy rain forecast across dozens of districts — from Chennai to the Nilgiris — and winds of up to 50 kmph, the state faces one of its most widespread weather alerts of the season. Conditions are expected to ease only by 28–29 October.
Key Takeaways
A five-day fishing ban is in effect across Tamil Nadu from 25 October to 29 October 2025 due to a potential cyclone over the Bay of Bengal .
A low-pressure area that shifted to the southeast Arabian Sea and Lakshadweep region by 23 October is driving the threat.
Winds of 40–50 kmph , thunderstorms and heavy rainfall are expected across districts including Madurai, Coimbatore, Nilgiris, Chennai, Nagapattinam and others.
Isolated heavy to very heavy rain is forecast for Monday, 27 October , across Nilgiris, Coimbatore, Sivaganga, Ramanathapuram and several other districts.
Conditions are expected to improve gradually from 27 October , with largely dry weather across most of the state by 28–29 October .
Fishermen across Tamil Nadu have been barred from venturing into the sea for five days starting Sunday, 25 October, as authorities issued a precautionary restriction in response to a potential cyclonic storm developing over the Bay of Bengal. The ban will remain in force until 29 October, with heavy rain, thunderstorms, and gusty winds forecast across wide stretches of the state during this period.
What Triggered the Alert
According to weather bulletins, a low-pressure area that had been lying over the Comorin region and adjoining southern Tamil Nadu and Kerala on 22 October had shifted to the southeast Arabian Sea and the neighbouring Lakshadweep region by 8:30 am on 23 October. Forecasters also noted an atmospheric circulation extending from the southeast Arabian Sea and adjoining Lakshadweep region towards the northern Tamil Nadu coast through Kerala, at approximately 1.5 kilometres above sea level — a configuration that typically precedes organised weather systems.
Districts on High Alert in the Initial Phase
Heavy rainfall accompanied by thunderstorms, lightning, and winds reaching 40–50 kmph is expected at isolated locations in the Nilgiris, Coimbatore, Theni, Dindigul, Madurai, Perambalur, Ariyalur and Tiruchirappalli districts in the opening phase of the forecast period. Coastal and interior districts including Chennai, Tiruvallur, Kancheepuram, Chengalpattu, Cuddalore, Thanjavur, Tiruvarur and Nagapattinam could also receive rain with thunderstorms and gusty winds. Puducherry and Karaikal are similarly in the forecast zone.
Monday Forecast: Isolated Heavy to Very Heavy Rain
On Monday, 27 October, isolated heavy to very heavy rainfall is likely in the Nilgiris, Coimbatore, Theni, Madurai, Sivaganga, Ramanathapuram and Pudukkottai districts, along with thunderstorms, lightning and winds of 40–50 kmph. Heavy rain is additionally forecast across Thanjavur, Tiruvarur, Nagapattinam, Mayiladuthurai, Erode, Salem, Namakkal, Karur, Tiruppur, Dindigul, Virudhunagar, Thoothukudi, Perambalur, Ariyalur, Kallakurichi, Cuddalore and Tiruvannamalai.
When Conditions Are Expected to Ease
Rainfall is forecast to taper off from 27 October, with isolated light to moderate showers likely in Kanniyakumari, Tirunelveli, Thoothukudi and Ramanathapuram. By 28 and 29 October, only the southern coastal districts are expected to see isolated light to moderate rain, while generally dry weather is anticipated across the rest of Tamil Nadu and in Puducherry. The Chennai Meteorological Department has indicated that conditions will broadly improve across much of the state towards the end of the restriction period.
Point of View
Which have become increasingly unpredictable. Notably, the weather system began over the Comorin region — a zone that has historically served as an incubation point for late-October cyclones — before tracking into the Arabian Sea, an unusual trajectory worth monitoring. The breadth of the rainfall forecast, spanning districts from the Nilgiris to Nagapattinam, suggests this is not a localised event but a state-wide disruption. Authorities would do well to ensure that early-warning communication reaches fishing communities in remote coastal hamlets, where the last mile of alert dissemination has historically been the weakest link.
NationPress
25 Oct 2026
Frequently Asked Questions
Why has Tamil Nadu imposed a fishing ban from 25 October 2025?
Tamil Nadu has imposed a five-day fishing ban starting 25 October 2025 due to warnings of a potential cyclonic storm developing over the Bay of Bengal. The restriction, which runs until 29 October, is a precautionary measure to protect fishermen from heavy seas, thunderstorms, and winds forecast at 40–50 kmph.
Which districts in Tamil Nadu are on heavy rain alert?
Multiple districts are under heavy rain alert, including Chennai, Madurai, Coimbatore, Nilgiris, Theni, Nagapattinam, Tiruvarur, Thanjavur, Tiruchirappalli, Cuddalore, Ramanathapuram and others. Puducherry and Karaikal are also expected to receive heavy rain with thunderstorms and gusty winds.
When will the weather in Tamil Nadu improve?
According to the Chennai Meteorological Department, rainfall is expected to ease from 27 October, with mostly dry conditions forecast across much of Tamil Nadu and Puducherry by 28 and 29 October. Only the southern coastal districts may still see isolated light to moderate showers on those days.
What weather system is causing the rain and fishing ban in Tamil Nadu?
A low-pressure area that originated over the Comorin region and southern Tamil Nadu on 22 October shifted to the southeast Arabian Sea and Lakshadweep region by 23 October. An associated atmospheric circulation extending towards the northern Tamil Nadu coast through Kerala, at about 1.5 kilometres above sea level, is contributing to the widespread rainfall forecast.
How long will the fishing ban in Tamil Nadu last?
The fishing ban is in force for five days, from Sunday, 25 October, through Thursday, 29 October 2025. Fishermen are prohibited from venturing into the sea during this entire period across the state.
