Theni Temperature and Weather History

Tamil Nadu, India • Historical Climate Data for the Past 45 Years

Location: 9.9996°N, 77.4644°E

°C/°F
Wind

Theni Climate Overview

Theni, Tamil Nadu has an average annual temperature of 23.6°C, approximately 1185mm of rainfall per year, and average humidity of 74%. This page covers 45 years of historical climate data (1981–2025) sourced from NASA POWER — including monthly temperatures, rainfall, humidity, and wind speed with interactive charts and year-by-year records.

☀️

Quick Climate Facts

(1981 - 2025)

Hottest Month

🔥

April

Avg:27.4°C
Min:19.8°C
Max: 37.6°C

Coldest Month

❄️

December

Avg:20.8°C
Min:13.8°C
Max: 28.0°C

Wettest Month

💧

October

203 mm

Driest Month

🏜️

February

15 mm

Most Humid

💨

November

86%

Least Humid

🌬️

March

55%

Highest Ever

🌡️

40.2°C

April 1998

Lowest Ever

🧊

11.0°C

December 1994

🌡️Temperature Patterns

Monthly averages · 1981–2025 climate normals · °C

🌧️Rainfall Distribution

Monthly rainfall · 1981–2025 seasonal trends · mm/month

📖Theni Monthly Temperature Guide

The temperature chart above displays the average monthly temperatures for Theni based on 45 years of climate data. April is typically the hottest month with average temperatures reaching 27.4°C, while December is the coolest month with an average of 20.8°C. These temperature patterns are crucial for agricultural planning, tourism activities, and understanding seasonal variations in Tamil Nadu. The temperature range between maximum and minimum values helps identify the best months for outdoor activities and provides insights into the region's climate classification.

🌬️Wind Speed Patterns

Monthly wind speed · 1981–2025 · m/s

💧Humidity Patterns

Avg relative humidity · 1981–2025 · %

💧Monsoon & Rainfall Patterns in Theni

In Theni, October is the wettest month with an average of 196mm of rainfall, while February is the driest with just 16mm. This seasonal pattern is driven by the Indian monsoon and directly affects agriculture and water availability in Tamil Nadu. Humidity peaks in November at 86%, typically coinciding with the monsoon season.

Monthly Climate Data

View:
Month🌤️HighLowAvgHumid %Rain (mm)Wind (m/s)
Jan☀️29.8°C13.3°C21.0°C76%191.2
Feb☀️33.6°C14.1°C23.2°C63%161.2
Mar🌞36.8°C16.4°C26.0°C55%251.3
Apr☔37.6°C19.8°C27.4°C61%661.1
May☔36.4°C20.1°C26.3°C70%1101.5
Jun🌧️32.4°C18.8°C24.0°C77%1542.6
Jul☔30.7°C18.5°C23.3°C78%1222.8
Aug☔31.1°C18.3°C23.3°C79%1172.5
Sep☔31.2°C17.8°C23.4°C80%1331.7
Oct🌧️30.4°C17.4°C23.0°C84%1961.1
Nov🌧️28.2°C15.6°C21.8°C86%1511.1
Dec☔28.0°C13.8°C20.8°C84%551.3

Showing average climate conditions across 45 years (1981-2025)

📊 About Monthly Averages

This view shows climate patterns averaged across all 45 years of data (1981-2025). Each data point represents the typical weather for that month, helping you understand seasonal patterns and plan visits to Theni.

🌍 Climate Zone

Avg Annual Temperature:23.6°C
Avg Annual Rainfall:1185 mm
Data Period:1981 - 2025

🎈Explore Weather in Other Tamil Nadu Districts

View historical climate data for other districts in Tamil Nadu. Compare temperature patterns, rainfall trends, and weather statistics across the region.

Chennai
Tamil Nadu
Weather History →
Coimbatore
Tamil Nadu
Weather History →
Cuddalore
Tamil Nadu
Weather History →
Dharmapuri
Tamil Nadu
Weather History →
Dindigul
Tamil Nadu
Weather History →
Erode
Tamil Nadu
Weather History →
Kancheepuram
Tamil Nadu
Weather History →
Kanniyakumari
Tamil Nadu
Weather History →
Karur
Tamil Nadu
Weather History →
Krishnagiri
Tamil Nadu
Weather History →

❓Frequently Asked Questions

The average annual temperature in Theni, Tamil Nadu is 23.6°C based on 45 years of historical climate data from 1981 to 2025. The hottest month is typically April with an average of 27.4°C, while the coolest month is December with an average of 20.8°C.
October is typically the wettest month in Theni with an average rainfall of 196mm. This is part of the monsoon season pattern in Tamil Nadu. The driest month is February with only 16mm of rainfall on average.
February is the driest month in Theni, receiving only 16mm of rainfall on average. This is significantly lower than the wettest month (October), which receives 196mm. These dry periods are important for planning irrigation and water resource management in Tamil Nadu.
The highest recorded temperature in Theni was 40.2°C in April 1998. This extreme temperature event is part of the historical climate record spanning from 1981 to 2025 and helps us understand the range of weather conditions that can occur in Tamil Nadu.
The lowest recorded temperature in Theni was 11.0°C in December 1994. This cold temperature extreme, combined with the highest recorded temperature, shows the full temperature range experienced in the district over the past 45 years.
November has the highest humidity in Theni, with an average relative humidity of 86%. This often coincides with the monsoon season when moisture levels are at their peak. High humidity affects how temperature is perceived and can impact agriculture, health, and daily comfort in Tamil Nadu.
March has the lowest humidity in Theni, with an average relative humidity of 55%. These drier months typically occur outside the monsoon season and can be more comfortable for certain outdoor activities and agricultural operations.
All weather and climate data for Theni is sourced from NASA POWER (Prediction of Worldwide Energy Resources), which provides reliable meteorological data from NASA research. The data is based on the MERRA-2 Reanalysis with a spatial resolution of 0.5° x 0.625° and covers the period from 1981 to 2025. This ensures high-quality, scientifically validated climate information for research, planning, and decision-making purposes.
This comprehensive weather history can help farmers in Theni make informed decisions about crop selection, planting schedules, and irrigation planning. The monthly rainfall patterns show when water availability is highest (during October), while temperature trends help determine suitable growing seasons for different crops. The 45-year dataset also helps identify long-term climate shifts that may require adaptation in farming practices. Consider factors like average humidity, wind speed, and temperature ranges when planning agricultural activities.
Based on the climate data, the most pleasant months to visit Theni are typically those with moderate temperatures and lower rainfall. December through April offer varying experiences. For comfortable weather, consider visiting during months with temperatures around 23.6°C and lower humidity levels (March). Avoid the peak monsoon months if you prefer dry weather, particularly October which receives the most rainfall. However, the monsoon season can be beautiful for those who enjoy lush green landscapes and don't mind occasional rain.

📚 Data Source

All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a project providing solar and meteorological data sets from NASA research for support of renewable energy, building energy efficiency, and agricultural needs.

Parameters included:
  • Temperature (Min, Max, Average)
  • Precipitation (Rainfall)
  • Relative Humidity
  • Wind Speed
Data specifications:
  • Temporal Resolution: Monthly
  • Spatial Resolution: 0.5° x 0.625°
  • Source: MERRA-2 Reanalysis
  • Coverage: 1981-2025

Historical weather data for Theni, Tamil Nadu • Data: NASA POWER • 1981-2025