South Australia has a warm subtropical climate with warm summers and mild winters.
South Australia has an average annual temperature of 19.0°C across all 26 cities, with approximately 365 mm of annual precipitation and average humidity of 62%. Temperatures peak in January and drop to their lowest in July, while rainfall is highest during summer months.
The warmest city is Kingoonya with average July highs of 23.7°C, while Penola is the coldest with average January lows of 8.7°C. Humidity remains moderate throughout the year creating warm and dry 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 | 😎 | 40.5°C | 12.1°C | 26.3°C | 49% | 18 | 4.1 | 7.80 |
| February | 😎 | 39.2°C | 12.1°C | 25.6°C | 50% | 16 | 4.0 | 7.00 |
| March | 😎 | 36.1°C | 10.5°C | 23.3°C | 55% | 20 | 3.6 | 5.70 |
| April | ☀️ | 30.8°C | 8.3°C | 19.5°C | 60% | 25 | 3.2 | 4.20 |
| May | ☀️ | 25.0°C | 5.7°C | 15.3°C | 69% | 36 | 3.1 | 3.00 |
| June | 🌤️ | 20.4°C | 3.6°C | 12.0°C | 75% | 48 | 3.3 | 2.40 |
| July | 🌤️ | 19.7°C | 2.9°C | 11.3°C | 75% | 48 | 3.4 | 2.70 |
| August | 🌤️ | 22.6°C | 3.5°C | 13.0°C | 72% | 44 | 3.6 | 3.60 |
| September | ☀️ | 27.3°C | 4.7°C | 16.0°C | 66% | 37 | 3.6 | 4.90 |
| October | ☀️ | 31.9°C | 6.2°C | 19.1°C | 60% | 28 | 3.8 | 6.20 |
| November | 😎 | 35.9°C | 8.0°C | 22.0°C | 55% | 23 | 3.9 | 7.10 |
| December | 😎 | 38.3°C | 10.1°C | 24.2°C | 51% | 23 | 4.1 | 7.70 |
Showing average climate conditions across 45 years (1981–2025) · averaged across all 26 cities in South Australia
🧥 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.
☔ Rainfall is spread across the year with no sharply defined wet season.
Region-wide monthly averages across 26 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 75% in July · annual avg 62%
The warmest year on record was 2019 (avg: 20.4°C), while the coldest year was 1992 (avg: 17.8°C).
Averaged across all 26 cities in South Australia · Last 10 years · °C
Averaged across all 26 cities in South Australia · Last 10 years · mm/year
🔥 hottest · ❄️ coldest · 🌧️ wettest
ℹ️ Values are averages across all 26 cities in South Australia for each year.
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 8.2°C | 20.0°C | 31.7°C | 239 | 58% | 3.7 m/s |
2024 | 8.0°C | 19.7°C | 31.3°C | 254 | 60% | 3.5 m/s |
2023 | 8.0°C | 19.8°C | 31.6°C | 257 | 61% | 3.6 m/s |
2022 | 7.8°C | 18.4°C | 29.0°C | 432 | 65% | 3.6 m/s |
2021 | 7.4°C | 19.1°C | 30.7°C | 291 | 61% | 3.7 m/s |
2020 | 7.2°C | 18.6°C | 30.0°C | 391 | 62% | 3.7 m/s |
2019 🔥 | 7.6°C | 20.4°C | 33.2°C | 129 | 56% | 3.7 m/s |
2018 | 7.9°C | 19.9°C | 31.8°C | 135 | 56% | 3.7 m/s |
2017 | 7.7°C | 19.8°C | 31.9°C | 149 | 58% | 3.6 m/s |
2016 | 7.6°C | 19.1°C | 30.6°C | 318 | 62% | 3.7 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.
