Adelaide River has a warm subtropical climate with warm summers and mild winters.
Temperatures peak in October and drop to their lowest in June, while rainfall is highest during winter months.
Humidity remains moderate throughout the year, especially during winter months, creating warm and humid conditions.
| Month | 🌤️ | High | Low | Avg | Humid % | Rain (mm) | Wind (m/s) | Solar (kWh/m²) |
|---|---|---|---|---|---|---|---|---|
| January | 🌧️ | 33.8°C | 23.3°C | 28.6°C | 86% | 371 | 2.1 | 5.83 |
| February | 🌧️ | 32.9°C | 22.9°C | 27.9°C | 88% | 321 | 2.0 | 5.77 |
| March | 🌧️ | 32.7°C | 21.2°C | 27.0°C | 86% | 265 | 1.8 | 6.06 |
| April | ☔ | 33.0°C | 17.6°C | 25.3°C | 81% | 87 | 1.9 | 5.95 |
| May | 🌞 | 34.5°C | 14.6°C | 24.5°C | 67% | 15 | 2.3 | 5.52 |
| June | 🌞 | 35.6°C | 12.9°C | 24.2°C | 49% | 1 | 2.6 | 5.22 |
| July | 🌞 | 36.5°C | 13.1°C | 24.8°C | 41% | 2 | 2.7 | 5.47 |
| August | 🌞 | 38.4°C | 14.4°C | 26.4°C | 41% | 2 | 2.5 | 6.18 |
| September | 🔥 | 40.4°C | 18.5°C | 29.5°C | 46% | 17 | 2.3 | 6.65 |
| October | 🔥 | 41.5°C | 22.2°C | 31.8°C | 53% | 61 | 2.2 | 6.84 |
| November | ☔ | 40.1°C | 23.7°C | 31.9°C | 66% | 144 | 1.8 | 6.64 |
| December | 🌧️ | 37.1°C | 23.5°C | 30.3°C | 78% | 265 | 1.8 | 6.25 |
Showing average climate conditions across 45 years (1981–2025)
🧥 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.
☔ Heavy Rainfall expected — carry rain gear and plan outdoor activities around these months.
Monthly averages · 1981–2025 climate normals · °C
Temperatures rise steadily from spring, peak in October, and gradually decline through autumn into winter.
These seasonal patterns offer comfortable conditions year-round, with warm summers and mild winters.
Monthly rainfall · 1981–2025 seasonal trends · mm/month
Monthly averages · 1981–2025
💧 Humidity peaks at 88% in February · annual avg 65%
The warmest year in Adelaide River's recorded history was 2016 (avg: 29.7°C), while the coldest was 1999 (avg: 26.3°C).
Average annual high/low · Last 10 years · °C
Total annual precipitation · Last 10 years · mm/year
| Year | Min Temp | Avg Temp | Max Temp | Rainfall (mm) | Avg Humidity | Avg Wind |
|---|---|---|---|---|---|---|
2025 | 19.2°C | 27.6°C | 35.9°C | 1636 | 69% | 2.1 m/s |
2024 | 20.1°C | 28.6°C | 37.1°C | 1603 | 67% | 2.4 m/s |
2023 | 19.6°C | 28.3°C | 36.9°C | 1049 | 63% | 2.3 m/s |
2022 | 19.8°C | 28.4°C | 37.1°C | 1473 | 66% | 2.0 m/s |
2021 | 19.5°C | 28.0°C | 36.6°C | 1381 | 66% | 2.1 m/s |
2020 | 20.6°C | 29.2°C | 37.8°C | 1200 | 62% | 2.3 m/s |
2019 🔥 | 19.9°C | 29.5°C | 39.2°C | 558 | 56% | 2.4 m/s |
2018 | 19.8°C | 28.6°C | 37.4°C | 881 | 60% | 2.2 m/s |
2017 | 20.2°C | 28.9°C | 37.7°C | 760 | 62% | 2.3 m/s |
2016 | 20.8°C | 29.7°C | 38.7°C | 733 | 61% | 2.0 m/s |
Showing 1 to 10 of 45 years
Based on 45 years of data (1981–2025), October is typically the hottest month in Adelaide River, Northern Territory, with average high temperatures around 41.5°C.
June is the coldest month in Adelaide River, with average low temperatures around 12.9°C.
January receives the most rainfall with approximately 371 mm, while June is the driest with 1 mm.
The highest recorded temperature was 43.7°C in October 2019. This is part of the historical record spanning 1981–2025.
The lowest recorded temperature was 7.2°C in June 2000.
This page covers 45 years of climate data from 1981 to 2025. As new data is added to the database the page automatically reflects the updated coverage.
Adelaide River receives the most sunlight in October with an average solar radiation of 6.84 kWh/m²/day. This solar radiation data, sourced from NASA POWER, is useful for solar energy planning and agriculture in Northern Territory.
All climate data is sourced from NASA POWER (Prediction Of Worldwide Energy Resources), based on MERRA-2 satellite and model data. It provides monthly averages for temperature, precipitation, humidity, wind speed, and solar radiation.
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.
