Tamil Nadu rain forecast: Chennai to touch 38°C, heavy rain alert for June 25–26
Synopsis
Tamil Nadu is heading into a split-weather stretch — heavy rain warnings for Chennai and coastal districts on June 25, and hill districts on June 26, even as the State capital bakes at 38°C. The RMC's dual alert on heat and heavy rain captures the uncomfortable paradox of India's pre-monsoon coastal weather.
Key Takeaways
The Regional Meteorological Centre (RMC) , Chennai, has forecast moderate rainfall across Tamil Nadu on 23–24 June .
Heavy rain warning issued for Tiruvallur, Chennai, Kancheepuram, Chengalpattu and Ranipet on 25 June .
On 26 June , heavy rainfall expected in Nilgiris, Coimbatore, Dindigul, Theni, Tenkasi, Tirunelveli and Kanniyakumari .
Chennai maximum temperatures are likely to hover around 38 degrees Celsius for the next two days.
Residents advised to stay hydrated, avoid prolonged sun exposure, and follow local weather alerts.
The Regional Meteorological Centre (RMC) in Chennai has forecast moderate rainfall across several districts of Tamil Nadu over the next two days, even as the State capital braces for maximum temperatures hovering around 38 degrees Celsius. The forecast, issued on 23 June, covers both Tuesday and Wednesday, with conditions expected to remain hot, humid, and intermittently wet.
Rain Distribution Across the State
According to the latest weather bulletin, moderate rainfall is expected in Western Ghats districts, parts of northern Tamil Nadu, and the Union Territory regions of Puducherry and Karaikal on Tuesday. Light to moderate rain accompanied by thunderstorms is also anticipated at isolated locations across the State on both days.
Meteorologists noted that atmospheric conditions remain favourable for scattered rainfall activity. Districts along the Western Ghats are likely to receive the most significant rainfall, while isolated pockets elsewhere may see brief spells of showers with thunder and lightning.
Heavy Rain Alerts: June 25 and June 26
The weather office has issued a specific warning for heavy rainfall on 25 June in Tiruvallur, Chennai, Kancheepuram, Chengalpattu, and Ranipet districts. A day later, on 26 June, heavy rain is likely to lash Nilgiris, Coimbatore, Dindigul, Theni, Tenkasi, Tirunelveli, and Kanniyakumari districts.
Officials said evolving weather systems are being closely monitored as they continue to influence conditions across the State. Residents in high-rainfall districts have been advised to stay updated with local weather alerts and exercise caution during thunderstorm activity.
Chennai: Heat Persists Despite Showers
For Chennai, the forecast indicates partly cloudy skies with the possibility of moderate rainfall in some parts of the city. While intermittent showers may offer brief respite from the heat, hot and humid conditions are expected to persist through the period.
Maximum temperatures in Chennai are likely to remain around 38 degrees Celsius for the next two days. Combined with elevated humidity, the heat index during afternoon hours could feel significantly higher than the recorded temperature.
Public Health Advisory
Authorities have advised residents to stay well hydrated, limit exposure to direct sunlight during peak afternoon hours, and follow official weather advisories as both rainfall and temperature conditions continue to fluctuate. This comes amid a broader pattern of pre-monsoon heat stress across peninsular India, where coastal cities like Chennai routinely experience high humidity amplifying the discomfort of already elevated temperatures.
Point of View
But the specificity of district-level warnings for June 25 and 26 signals that the pre-monsoon system is better organised than typical scattered activity. What mainstream coverage often glosses over is the compounding effect of humidity on a 38°C reading in Chennai — the real-feel temperature can push well past 45°C, creating genuine public health risk that generic 'stay hydrated' advisories understate. Authorities would do well to activate ward-level heat action protocols in Chennai alongside the rain alerts, rather than treating the two as separate concerns.
NationPress
23 Jun 2026
Frequently Asked Questions
What is the weather forecast for Tamil Nadu on 23–24 June?
The RMC Chennai has forecast moderate rainfall across Western Ghats districts, parts of northern Tamil Nadu, and the Union Territories of Puducherry and Karaikal on Tuesday, with light to moderate rain and thunderstorms at isolated locations on both Tuesday and Wednesday.
When is heavy rain expected in Chennai?
Heavy rainfall is forecast for Chennai on 25 June, along with the districts of Tiruvallur, Kancheepuram, Chengalpattu, and Ranipet. Residents have been advised to monitor local weather alerts and exercise caution during thunderstorm activity.
Which districts face heavy rain on 26 June?
On 26 June, heavy rainfall is likely in Nilgiris, Coimbatore, Dindigul, Theni, Tenkasi, Tirunelveli, and Kanniyakumari districts, according to the RMC Chennai bulletin.
What will Chennai's temperature be over the next two days?
Maximum temperatures in Chennai are expected to remain around 38 degrees Celsius for the next two days. High humidity levels will make conditions feel significantly more uncomfortable, particularly during afternoon hours.
What precautions have authorities advised for Tamil Nadu residents?
Officials have advised residents to stay well hydrated, avoid prolonged direct sunlight during peak daytime hours, and keep track of official weather advisories as rainfall and temperature conditions continue to change across the State.
