GEOGRAPHY AND CLIMATE

Thiruvananthapuram is built on hills by the sea shore and is located at 8.5° N 76.9° E on the west coast, near the southern tip of mainland India. The city and the suburbs covers an area of about 250 square kilometers, sandwiched between the Western Ghats and the Arabian Sea. The average elevation is 16 ft from the sea level.
The area can be divided into two geographical regions, the midlands and the lowlands. The midland region comprises low hills and valleys adjoining the Ghats. The lowland is a narrow stretch comprising shorelines, rivers and deltas, dotted with coconut palms. Vellayani lake, biggest fresh water lake in the district is in the suburbs of the city. The major rivers that flow through the city are the Karamana river, and the Killi river.
There are highlands, which form the eastern suburbs of the city. The highest point in the district is the Agasthyarkoodam which rises 1890 m above sea level. Ponmudi and Mukkunimala are hill-resorts near the city.
ClimateThe city has a tropical climate and therefore does not experience distinct seasons. The mean maximum temperature 34 °C and the mean minimum temperature is 21 °C. The humidity is high and rises to about 90% during the monsoon season. Thiruvananthapuram is the first city along the path of the south-west monsoons and gets its first showers in early June. The city gets heavy rainfall of around 1700 mm per year. The city also gets rain from the receding north-east monsoons which hit the city by October. The dry season sets in by December. December, January and February are the coldest months while March, April and May are the hottest. The winter temperature comes down to about 18 °C and summer temperatures can sometimes go as high as 35 °C