Indonesian Consulate in Hamburg Meteorology Links 1. Realtime data at weather station on top of Geomatikum building Uni Hamburg . The homepage display the realtime condition of several weather parameters in Hamburg. 2. GPCP data collection . This homepage contains Precipitation Estimates from the MAPB that you can download.
Many data here are monthly means and very useful for climatologist and weather forecaster.
Another Precipitation Database including GPCP data, GHCN collection , daily data from 1994 - present. Meteorological data link by Max Planck Institut .