Abstract. Extensive measurement of middle atmospheric temperature with the help of lidar data of more than 10 years (1998)(1999)(2000)(2001)(2002)(2003)(2004)(2005)(2006)(2007)(2008) and TIMED/SABER data of 7 years (2002)(2003)(2004)(2005)(2006)(2007)(2008), has been carried out from a low latitude station, Gadanki, India (13.5 • N, 79.2 • E), which exhibits the presence of semiannual oscillation (SAO) and annual oscillation (AnO). The AnO component is stronger in the mesospheric region (80-90 km) and the SAO is dominant at stratospheric altitudes (30-50 km). Overall, the AnO possesses higher amplitude ∼6-7 K, and the SAO shows less amplitude ∼1-2 K. The AnO present at 90 km finds crest near summer solstice, and the same at 80 km shows peak near winter solstice with a downward progression speed ∼1.7 km/month. The SAO propagates downward with an average phase speed ∼9 km/month and phase maximizes around equinox and solstice at 50 and 30 km, respectively. The observed SAO has also shown seasonal asymmetry in peaks.