 Helensburgh also has a higher rainfall than its neighbours, although locals would claim that the difference between Helensburgh's rainfall rate and Sydney's or Wollongong's rainfall rates seems greater than what official sources would indicate it to be.Commuters can often be heard to complain about seeing clear blue skies in every other suburb on a rainy day in Helensburgh.The reason for this microcosm of climate lies in Helensburgh's altitude.