Castle Hill Weather in April
What's the weather like in Castle Hill (New South Wales) in April 2025?
The climate in Castle Hill during April can be summarized as warm and reasonably dry.
April is in the fall / autumn in Castle Hill and is typically the 6th warmest month of the year. Daytime maximum temperatures average around a comfortable 24°C (75°F), whilst at night 12°C (54°F) is normal.
| Daytime temperature | 23.8°C 74.8°F |
|---|---|
| Nightly temperature | 12.3°C 54.1°F |
| Average temperature | 18°C 64.4°F |
| Daily sunshine | 6.9 hrs |
| Avg rainfall | 79 mm 3.1 ins |
| Rainy days | 11 days |
| Sea temperature | 23.1°C 73.6°F |
| Humidity | 64% |
| Windspeed | 10.4kph 7 mph |
On average April is the 6th wettest month of the year in Castle Hill with around 79mm 3.1 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 11 days, although this may vary considerably.
On the flip side this corresponds to an average of 6.9 hours of sunshine per day.
April temperatures in Castle Hill
April rainfall
April hourly sunshine
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Castle Hill in April 2025.
Other monthly averages
Castle Hill weather stats
| Hottest month: | January | 27.8°C 82°F |
|---|---|---|
| Driest month: | September | 43mm 1.7ins |
| Sunniest month: | August | 7.8hrs |
| Coldest month: | July | 16.8°C 62.2°F |
| Wettest month: | February | 123mm 4.8ins |
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