Weather in Theni, Tamil Nadu
Theni is a prominent regional city located in Tamil Nadu, India. The city lies at approximately 10.0°N latitude, placing it in the tropical monsoon climate zone.
Climate Overview
This part of South India sees rainfall during both monsoons, plus occasional cyclonic storms from the Bay of Bengal or Arabian Sea between October and December. Like much of Tamil Nadu, Theni follows the South Asian monsoon calendar: a hot pre-monsoon, a wet monsoon and a drier cool season after October. Summer afternoons typically sit between 32 and 36°C.
Weather by season in Theni
Theni's year divides into four broad seasons. The southwest monsoon normally arrives around 3 June. Daytime figures below are typical lowland values for this latitude — hill stations sit markedly cooler.
- Winter (Dec–Feb): days around 31°C, nights around 22°C. Mild, dry and one of the most pleasant times to visit.
- Summer / pre-monsoon (Mar–Jun): days around 37°C, nights around 26°C. Warm and humid, building towards the monsoon.
- Monsoon (Jul–Sep): days around 32°C, nights around 24°C. Frequent rain and high humidity; the wettest part of the year.
- Post-monsoon (Oct–Nov): days around 31°C, nights around 23°C. The northeast monsoon brings the main rains to the far south now.
Today's Weather in Theni
Wondering what the weather is like in Theni right now? See current conditions, today's high and low, and AQI in the live panel above.
Hourly Forecast
Planning your day in Theni? The 24-hour forecast shows temperature changes, precipitation probability and wind conditions for each hour, helping you pick the best time for travel, outdoor work or events in Tamil Nadu.
7-Day Weather Forecast for Theni
The 7-day forecast for Theni shows daily high and low temperatures, expected weather conditions and rain probability — useful for planning trips, events or agricultural activities in the Tamil Nadu region.
Air Quality in Theni
Air quality in Theni is measured using the European Air Quality Index, with PM2.5 and PM10 particulate matter readings displayed alongside the live forecast. In larger cities like Theni, AQI can deteriorate sharply from October to January. A mask and limited outdoor time can help on the worst days.
Quick facts about Theni
Theni has a population of about 10,34,724; sits at 10.01°N; and is in India; its monsoon typically arrives in late May.
Common spellings
Local search audiences in Tamil Nadu often type the weather query in Tamil (தமிழ்). The Tamil word for weather is வானிலை, commonly transliterated as vaanilai, vanilai, vaaniilai, vanilaai. The Hindi मौसम (mausam, mosam, mausham) is also widely used across Theni. All refer to the same thing — current weather, today's temperature and the forecast you'll find on this page.
Nearby Cities in Tamil Nadu
Explore weather forecasts for other cities in Tamil Nadu. See the "More in Tamil Nadu" section above, or browse the full list on our states page.