The best time to visit Castle Hill
Month-by-month climate averages for Castle Hill, New South Wales, so you can pick your dates on data rather than guesswork.
The most comfortable time to visit Castle Hill is usually March, April, May and June, when daytime highs sit in the pleasant 16-26°C range and the heaviest February rain is behind you.
Castle Hill is warmest in January (highs near 27°C) and coldest in July (lows around 7°C), with roughly 942 mm of precipitation across the year and February the wettest month. The sweet spot for most visitors is March, April, May and June.
These are long-run averages. For the actual days you are travelling, check the live Castle Hill forecast - and note how much the models agree, because that tells you how much to trust it.
Castle Hill weather by month
what to expect in Castle Hill through the year, 1991-2020 averagesHere is Castle Hill's typical weather in each month: the average daytime high and overnight low in °C, how each month feels, and the wettest month marked. Use it to plan any trip to Castle Hill by season.