Natural fibers obtained from plants or animals. Okra fiber is one of the source of natural fibres, which comes from okra plant (Abelmoschus esculentus). Okra fiber is eco-friendly, biodegradable, available, and cost effective materials. The properties of okra fiber are changed with different harvesting time. This work studied to determine the physico-mechanical and thermal properties using Stelometer, Fibre fineness analysis system, Photovolt meter, Fourier Transform Infrared Spectroscopy (FTIR), and Thermogravimetric analysis (TGA) at different age of okra fibres. The results showed that strength (gm/tex) 30.78, fineness (μm) 40.50, whiteness or color (%) 48.40 of four-month okra fiber and the six-month okra fiber strength (gm/tex) 31.98, fineness (μm) 56.12, whiteness or color (%) 43.56. FTIR assessment of the okra fiber reveals the presence of functional group. Thermally stability of six-month sample is good compare to the four-month okra fiber. The okra bast fibre is an important unconventional source of fibres, which could be, characterized for their use in blending yarn, reinforcing materials and diversified products.