Mean wind profiles upto 30 km over Thumba (8°N) and Gan Island (Equator) during 4 days in July 1968 are constructed based on 12 synoptic high level balloon ascents taken on four consecutive days during the peak of Indian southwest monsoon. It is seen that there are two easterly wind maxima around 15 and 25 km altitude in the equatorial region. These wind maxima at Gan Island over the equator is less strong by 10 m/sec and two kilometers lower than over Thumba. There is change in the circulation from easterly to westerly at 28 km over the equator.