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 enjoys a sunny climate with mild winters and warm summers, perfect for making the most of the outdoors. Plan ahead with this information on temperature and rainfall. Summer (December â February) During summer, average temperatures range from 18.6 - 25.8Â°C (65.5 - 78.4Â°F), and average humidity spikes to 65%.