This work reports the development and preliminary results of the Vibrational Raman lidar at a coastal station, Trivandrum (8°33'N, 77°E). A Raman lidar technique for measuring atmospheric temperature and water vapor using vibrational Raman spectra of N2 and H2O are discussed in detail. Interference filters at 607 and 660nm of 1nm bandwidth are used in the Raman lidar channel. Nighttime temperature and water vapor profiles are obtained from 1-5km in the lower atmosphere. Lidar water vapor profiles are in good agreement with the Regional Model data. The variation in the temperature profiles may be due to the indirect aerosol effect in the lower atmosphere.