Hawthorne's winters are mild, with temperatures rarely dipping below 0°C and averaging around 14°C in January and December. Spring arrives in March, bringing slightly warmer temperatures that gradually increase throughout the season, peaking at an average of 17°C in April and May. Summer is warm to hot, with July and August being the hottest months, but temperatures still rarely exceed 35°C. Autumn brings a slight cooling trend, with temperatures averaging around 19°C in October before dropping back down into winter-like conditions by November and December.