An alternative way to discover Sydney
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Royal National Park Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Royal National Park.
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Climate overview of Royal National Park
Royal National Park, Australian Capital Territory, Australia, experiences moderate temperature changes through the seasons. January is the warmest month with daytime highs of 26°C (79°F), while July is the coolest at 18°C (64°F).
The city receives around 862 mm (34 in) of rainfall per year. February is the wettest month and September the driest. The sunniest month is December, with 8.6 hours of sunshine per day on average.
Royal National Park Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Royal National Park - and find the best time to visit.
Monthly Temperature in Royal National Park
In Royal National Park, seasonal changes bring about a moderate variation in temperatures. On average, daytime temperatures range from a comfortable 26°C (79°F) in January to a moderate 18°C (64°F) in July.
Nighttime temperatures range from 20°C (68°F) in January to 10°C (50°F) in July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Royal National Park
Generally, Royal National Park has a moderate amount of precipitation, averaging 862 mm (34 in) of rainfall annually. The seasons in Royal National Park bring significant changes in precipitation. The wettest month, February, receives high rainfall, with an average of 110 mm (4.3 in) of precipitation. This rainfall is distributed across 12 rainy days.
In contrast, the driest month, September, experiences much less rainfall, totaling 50 mm (2 in) over 10 rainy days. These distinct seasonal differences provide diverse experiences throughout the year. For more details, please visit our Royal National Park Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Royal National Park
Royal National Park enjoys sunny spells year-round. December sees up to 8.6 hours of daily sunshine, perfect for a sunny trip. May, the least sunny month, still offers a generous 6.0 hours of sun despite this cloudier time of the year.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Sydney, Australia (17 KM, 10 Miles).
Daily hours of sunshine
Data from: Sydney, Australia (17 KM, 10 Miles).
Daily percentage of sunshine
Data from: Sydney, Australia (17 KM, 10 Miles).
Water Temperature in Royal National Park
The mean water temperature over the year ranges from 16°C (61°F) in August to 21°C (70°F) in January.
Water temperature over the year
Data from: Sydney, Australia (17 KM, 10 Miles).
Humidity in Royal National Park by Month
The relative humidity is moderate throughout the year in Royal National Park.
The city experiences its highest humidity in February, reaching 62%. In August, the humidity drops to its lowest level at 48%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Data from: Sydney, Australia (17 KM, 10 Miles).
Wind Speed in Royal National Park
The average wind speed over the year ranges from 3 m/s (6 knots) to 4 m/s (8 knots). It is lower in March, April, May, June, July, August and September and higher in October. What does this mean?
The mean monthly wind speed over the year (meters per second)
Data from: Sydney, Australia (17 KM, 10 Miles).
Best Time to Visit Royal National Park
For comfortable weather, consider visiting Royal National Park in January, March, April, May, September, October, November and December. Conditions are usually least favourable in February, June, July and August.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
excellent
Feb
very good
Mar
excellent
Apr
excellent
May
excellent
Jun
very good
Jul
very good
Aug
very good
Sep
excellent
Oct
excellent
Nov
excellent
Dec
excellent
- Best overall: January, March, April, May, September, October, November and December
- Warmest weather: January, February, March and December
- Most sunshine: October and December
- Fewest rainy days: July, August and September
- Best for swimming: January, February, March, April and December.
Frequently asked questions about the climate in Royal National Park
What is the best time to visit Royal National Park?
January, March, April, May, September, October, November and December typically offer the most optimal weather in Royal National Park. In contrast, February, June, July and August tend to have less optimal conditions.
What temperatures can I expect in Royal National Park?
Daytime highs range from 18°C (64°F) in July to 26°C (79°F) in January. Nighttime lows range from 10°C (50°F) to 20°C (68°F).
How much rain does Royal National Park get?
Annual rainfall is around 862 mm (34 in). February is the wettest month with 110 mm (4.3 in), while September is the driest with 50 mm (2 in).
How sunny is Royal National Park?
Royal National Park receives around 2,644 hours of sunshine per year. December is the sunniest month with 257 hours, while May is the cloudiest with just 180 hours. Overall, Royal National Park enjoys abundant sunshine.
Royal National Park 3-Day Forecast
Royal National Park on the map
Royal National Park is highlighted - select any city to see its climate.
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