Climate Insights for Tirunelveli

The climate in Tirunelveli is hot. The average annual temperature is 29°C and approximately 1107mm of precipitation falls per year. November is the wettest month, receiving around 272mm of rainfall. Tirunelveli sits near the equator, so seasonal temperature differences are minimal throughout the year.

Tirunelveli sees moderate temperature variation throughout the year, ranging from 23°C to 38°C. April is the hottest month, with daytime highs reaching 38°C and an average of 32°C. January is the coolest month, with minimum temperatures around 23°C and an average of 27°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between February and March, with a 2°C shift in average temperatures.

Tirunelveli is a moderately rainy area, receiving approximately 1107mm of precipitation annually, which averages out to around 92mm per month. The wettest month is November, averaging 272mm of rainfall. October and December also tend to see above-average precipitation. The driest month is February, with just 24mm. That's 249mm less than November, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic.

Tirunelveli is relatively calm, with an average annual wind speed of 9km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is July, averaging 12km/h, though still comfortable for most outdoor activities. The calmest conditions occur in October, with average winds dropping to 7km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 5km/h gap between the calmest and windiest months. Wind tends to pick up during the summer months. The seasonal averages are 9km/h in winter, 8km/h in spring, 12km/h in summer, 8km/h in autumn.

It is currently summer in Tirunelveli, which began on June 21, 2026. Tirunelveli sits near the equator, so the traditional four-season cycle is less pronounced. Temperatures remain relatively stable year-round. The warmest period peaks in April at around 38°C, while the coldest stretch bottoms out in January near 23°C. Autumn is next, beginning on September 23, 2026 (8 days from now).

The table below shows monthly climate averages for Tirunelveli based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.