In planning all trips, you need to be aware of all conditions likely to be encountered and set the location and itinerary of your trip accordingly.
You will need to plan for alternative water sources in the event that creeks are dry, tanks are empty or springs have ceased flowing. For some trips, there is no real alternative to organising a water drop, whether put in by yourself or by others. Some rangers are prepared to organise water drops, particularly for remote parks with low visitation levels. In many parts of Australia, water from bores can be unreliable due to inconsistent availability, or it may be unsuitable for drinking because of fouling by stock or a high mineral content.
Try to plan trips to allow for a siesta during the hottest part of the day. Walking when temperatures exceed 30°C is generally unpleasant and your planning should determine how much of the day is likely to be above these temperatures, and should be reserved for an extended rest period. Getting up as soon as it is light, and walking in the early part of the morning, and again in the early evening can be very pleasant. Walking at night if the country is open enough and there is sufficient moonlight opens up a whole new dimension of the bush which we often miss. Try to avoid steep climbs in the hottest conditions, and allow for shorter stages and slower times than would apply in cooler conditions.