New South Wales has a warm subtropical climate with warm summers and mild winters.
New South Wales has an average annual temperature of 18.1°C across all 68 cities, with approximately 886 mm of annual precipitation and average humidity of 69%. Temperatures peak in January and drop to their lowest in July, while rainfall is highest during winter months.
The warmest city is Bourke with average July highs of 24.4°C, while Cooma is the coldest with average January lows of 6.7°C. Humidity remains moderate throughout the year creating warm and humid conditions. These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | ⛅ | 36.6°C | 13.8°C | 25.2°C | 61% | 91 | 2.4 | 6.90 |
| February | ⛅ | 35.0°C | 13.6°C | 24.3°C | 65% | 101 | 2.3 | 6.10 |
| March | ⛅ | 32.2°C | 11.5°C | 21.9°C | 67% | 100 | 2.2 | 5.20 |
| April | ☀️ | 27.6°C | 8.4°C | 18.0°C | 70% | 75 | 2.0 | 4.10 |
| May | 🌤️ | 23.4°C | 5.3°C | 14.3°C | 74% | 66 | 1.9 | 3.10 |
| June | 🌤️ | 19.6°C | 3.1°C | 11.4°C | 79% | 68 | 2.0 | 2.60 |
| July | 🌤️ | 19.1°C | 2.5°C | 10.8°C | 77% | 54 | 2.1 | 2.90 |
| August | 🌤️ | 21.5°C | 2.9°C | 12.2°C | 73% | 52 | 2.1 | 3.80 |
| September | ☀️ | 26.1°C | 4.7°C | 15.4°C | 68% | 47 | 2.2 | 5.00 |
| October | ☀️ | 30.1°C | 6.9°C | 18.5°C | 64% | 67 | 2.2 | 6.00 |
| November | ⛅ | 33.0°C | 9.2°C | 21.1°C | 63% | 85 | 2.3 | 6.60 |
| December | ⛅ | 35.3°C | 11.4°C | 23.3°C | 61% | 82 | 2.3 | 7.10 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 68 cities in New South Wales
🧥 Light layers are sufficient — this Mild Winter stays cool without prolonged hard freezes.
🌤️ Limit midday outdoor exposure and stay hydrated — this is an intense Hot Summer.
☔ Moderate Rainfall expected — carry rain gear and plan outdoor activities around these months.
Region-wide monthly averages across 68 cities · 1981–2025 · °C
Temperatures rise steadily from spring, peak in January, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Region-wide monthly rainfall · 1981–2025 · mm/month
Monthly averages · 1981–2025
💧 Humidity peaks at 79% in June · annual avg 69%
The warmest year on record was 2019 (avg: 19.2°C), while the coldest year was 1984 (avg: 16.6°C).
Averaged across all 68 cities in New South Wales · Last 10 years · °C
Averaged across all 68 cities in New South Wales · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 68 cities in New South Wales for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 8.5°C | 18.9°C | 29.3°C | 878 | 68% | 2.2 m/s |
2024 | 9.0°C | 19.1°C | 29.2°C | 842 | 69% | 2.1 m/s |
2023 | 8.5°C | 19.1°C | 29.6°C | 681 | 66% | 2.1 m/s |
2022 🌧️ | 8.1°C | 16.9°C | 25.6°C | 1244 | 76% | 2.2 m/s |
2021 | 7.6°C | 17.4°C | 27.1°C | 1049 | 72% | 2.2 m/s |
2020 | 8.4°C | 18.7°C | 29.0°C | 1098 | 72% | 2.2 m/s |
2019 🔥 | 8.0°C | 19.2°C | 30.4°C | 429 | 61% | 2.2 m/s |
2018 | 8.3°C | 19.2°C | 30.0°C | 605 | 63% | 2.2 m/s |
2017 | 8.1°C | 18.8°C | 29.4°C | 750 | 66% | 2.2 m/s |
2016 | 8.3°C | 18.6°C | 28.8°C | 757 | 67% | 2.2 m/s |
Showing 1 to 10 of 45 years
All weather data is sourced from NASA POWER (Prediction of Worldwide Energy Resources), a NASA project providing solar and meteorological data for renewable energy, building efficiency, and agricultural research.
