Nameless Sylvan Reserve
- Annual mean
- 15.4 °C
- Warmest month
- January
- Wettest month
- February
Analyzing long-term atmospheric trends and daylight hours at a representative coordinate.
Access detailed climatological data for Barren Grounds Nature Reserve, derived from representative-point measurements recorded between 1991 and 2020. Monthly patterns provide long-term averages for daily temperature ranges, precipitation intensity, relative humidity, wind speed, and daylight hours. Consistent datasets offer clear insight into seasonal atmospheric rhythms rather than live weather or short-term forecast variations.

Long term monthly averages tracking thermal ranges and precipitation rates across twelve months
Compare average temperature bounds, daily precipitation rates, humidity, wind, and daylight across the calendar year.
| Mean temperature | Precipitation | Humidity | Wind speed | Daylight | |
|---|---|---|---|---|---|
| January | 21.4 °C12.2° to 37.2° | 2.8 mm/day | 68.5% | 1.7 m/s | 14 hours |
| February | 20.6 °C12.1° to 34.3° | 4.5 mm/day | 74% | 1.7 m/s | 13.3 hours |
| March | 18.7 °C10.3° to 30.5° | 3.2 mm/day | 75.5% | 1.6 m/s | 12.2 hours |
| April | 15.8 °C7.6° to 26.6° | 2.2 mm/day | 75.4% | 1.6 m/s | 11.1 hours |
| May | 12.7 °C4.8° to 22.3° | 2.1 mm/day | 77.1% | 1.7 m/s | 10.2 hours |
| June | 10.2 °C3° to 18.3° | 3.4 mm/day | 81.6% | 1.8 m/s | 9.7 hours |
| July | 9.2 °C2.1° to 18.1° | 1.8 mm/day | 79.2% | 1.9 m/s | 9.9 hours |
| August | 10.1 °C2.3° to 20.4° | 2.1 mm/day | 73.8% | 2 m/s | 10.7 hours |
| September | 12.8 °C3.9° to 25° | 1.8 mm/day | 70.4% | 1.9 m/s | 11.8 hours |
| October | 15.5 °C5.9° to 29.5° | 2.2 mm/day | 67.8% | 1.7 m/s | 12.9 hours |
| November | 17.7 °C7.8° to 32.9° | 2.8 mm/day | 68.3% | 1.7 m/s | 13.9 hours |
| December | 19.7 °C10° to 34.9° | 2.4 mm/day | 67.3% | 1.7 m/s | 14.3 hours |
See two months side by side and how much they differ. Both use the same 1991–2020 climate normals and NASA POWER data point as the table above, so they show typical conditions, not a forecast.
Comparative monthly averages for temperature, precipitation, humidity, wind, and daylight duration
Interactive climate map
Open the climate map to compare monthly temperature, precipitation, and other averages.
Explore long term monthly temperature and precipitation data across diverse geographic settings.





Deepen your understanding of the Illawarra escarpment by mapping the protected heathlands and rugged sandstone features of Barren Grounds Nature Reserve. MoriAtlas provides detailed geographic insights into this essential New South Wales landscape and its surrounding conservation terrain.