This link will show the daily Gold Coast weather for July 2005
http://www.bom.gov.au/climate/dwo/20...0.200507.shtml
Daytime
maximum temps varied between 19.3°C and 25.6°C
9am temperatures varied between 14°C and 20°C whilst the
3pm temps were between 16.1°C and 24.4°C
It is the middle of winter still and does feel cold to locals. I think the beaches will be pretty empty, but still nice for some.