Sydney, Australia in October has warm conditions, with highs averaging 21.8°C (71°F). Sea temperature stays cool at 19.3°C (67°F).
This month falls at the middle of Spring.
Temperatures remain fairly steady throughout October, with daily highs around 22°C (72°F).
Rainfall is heaviest during the last third of the month, while the middle tends to be drier.
Expect around 10.2h of sunshine at the start of October, increasing to 10.9h by the end.
The warmest days tend to fall around the 31th, averaging 23°C (73°F).