About the rainfall timeseries graphs
Australian and regional rainfall timeseries are available from 1900 for annual, seasonal and monthly rainfall, as well as for the southern (April–November) and northern (October–April) wet seasons. Prior to 1900 Australia's rainfall network was too sparse for reliable analyses.
Note that even though the rainfall timeseries are updated each month, values for recent months should be considered preliminary as it can take several months to fully enter and quality-control all available rainfall data into the database.
Mean rainfall values are provided for each of the six Australian States and the Northern Territory, all of Australia, and six climatologically distinct regions; northern Australia (north of 26°S), southern Australia (south of 26°S), southwestern Australia (southwest of the line joining 30°S, 115°E and 35°S,120°E), southeastern Australia (south of 33°S, east of 135°E), eastern Australia (Queensland, New South Wales, Victoria and Tasmania), and the Murray–Darling catchment. Values calculated for New South Wales include the Australian Capital Territory. The graphs are plotted with a consistent range wherever possible. However, there are a small number of extreme values that exceed the graphing range. Users are referred to the data files to determine these values.
Timeseries are determined for each Australian State, the Northern Territory and the six regions shown above
Mean rainfall timeseries are calculated using a high-resolution gridded dataset developed for the Australian Water Availability Project (AWAP). The dataset uses topography-resolving analysis methods applied to all available monthly rainfall data passed by a series of internal quality tests. The resulting analyses have a resolution of approximately 5 km x 5 km.
Please note that any use of these data should be acknowledged to the Bureau of Meteorology. Apart from the purposes of study, research, criticism and review, no part of these data may be reproduced, or redistributed for any commercial purposes, or distributed to a third party for such purpose, without written permission from the Director of Meteorology.
The actual data values used to produce each graph are available via the "Raw dataset" link. The format for these data is:
<start year><start month><end year><end month> <mean rainfall value (mm)>
The "Sorted dataset" link provides the timeseries as a chronologically sorted list in order to place recent values in historical context.
Representative locations of rainfall stations included in spatial averages
Jones, D.A., Wang, W. and Fawcett, R. (2009). High-quality spatial climate data-sets for Australia. Australian Meteorological and Oceanographic Journal, 58, 233–248.
Full electronic copies of papers published in the Australian Meteorological and Oceanographic Journal (formerly the Australian Meteorological Magazine) are available online.