I ran some numbers, looking at actual rainfall IMBY for met summer up to now (Jun 1-Aug 12) and it confirms this is the driest summer to date here:
2005: 5.79
2006: 10.39
2007: 13.06
2008: 8.49
2009: 18.26
2010: 9.91
2011: 14.65
2012: 10.08
2013: 21.34
2014: 7.61
2015: 9.42
2016: 11.62
2017: 10.26
2018: 14.21
2019: 8.41
2020: 8.28
2021: 9.99
2022: 4.39