A preliminary study was conducted on the relative abundance of insect diversity with temperature and humidity in Arikambedu village, Thirumullaivoyal, Tamil Nadu. The study was aimed to estimate the insect population and their variation with temperature and humidity. The study was carried out from May 2021 to July 2021. A total of 7,338 insects from 6 orders were identified. Quadrat method, light trap method, sticky trap method and hand picking were adopted for the collection of insects in the present study. Various materials were used for the collection of insects such as sweep net, aquatic net, collection box, Global Positioning System (GPS), camera and data sheets. Hymenopterans were the most dominant and Odonates were the least dominant. The insect population of each insect order contributed as follows, Hymenopterans (41%), Dipterans (33%), Coleopterans (12%), Phasmids (8%), Orthopterans and Lepidopteran (2%) and Odonates (1%). The highest population of insects were recorded in July (41%) followed by May (34%) while June had the lowest population (25%). The start of monsoon could have led to increase in number during the month of July 2021. The insect population was influenced by variation in temperature and humidity. Simpson’s reciprocal index diversity was low for all the orders. The diversity of insects was calculated by Shannon- Wiener Index. The values of both the indexes were 0 and 2 respectively which denotes poor diversity of insects in the study area Arikambedu.