This is no brainer, especially in Melbourne where you might get four seasons in one day. But no matter where your hospo business is located, we recommend you have sufficient shade for your patrons.
Weather-proof umbrellas on tables are a good option, because they can easily be moved around and put up or down depending on the weather.
Weather-proof awnings or roofs are permitted too, which can be temporary or fixed, provided at least 2 sides are open for ventilation.
Venues in Victoria need to ensure umbrellas and sun shades cover less than half of the outdoor area, so as to not significantly impede upward airflow in the area.