UK storm names 2015: Why our storms are called Barny, Frank & Nigel. by Richard Chapman - 22 October 2015 9:45am. Richard Chapman is UK editor at the Weather Network.K storm names 2015: Why our storms are called Barny, Frank & Nigel. by Richard Chapman - 22 October 2015 9:45am. Richard Chapman is UK editor at the Weather Network.
Sydney: Annual Weather Averages. January is the hottest month in Sydney with an average temperature of 23Â°C (73Â°F) and the coldest is July at 13Â°C (55Â°F) with the most daily sunshine hours at 9 in December. The wettest month is March with an average of 164mm of rain.
Sydney experienced its hottest summer since records began in the summer of 2016-17, with more than 10 days over 35 Â°C (95 Â°F). Sydney's 2017 mean temperature of 19.5 Â°C (67.1 Â°F) degrees was 1.7 Â°C (35.1 Â°F) degrees above the long term average and the second highest value in 158 years of records.