 Dewpoints would be higher in late summer, reaching , especially in the mornings and evenings, although they would usually be lower in the heat of the day, dipping as low as in the extremely hot day.In late spring and summer, Sydney can sometimes get northwesterly winds from the Outback, which are dry and hot, making the temperatures soar above , with the relative humidity as low as 15%.This happens after the northwesterlies are carried entirely over the continental landmass, not picking up additional moisture from a body of water and retaining most of their heat.