This chart compares the average temperature of each planet in the Solar System in degrees Celsius. Venus is the hottest at 464°C despite not being closest to the Sun, while distant Neptune averages -200°C. Earth's 15°C average makes it the...
About: Planets by Average Temperature
Overview of the data behind this chartAI Insight
The most important anomaly in this data sits at the top: Venus (464°C) is far hotter than Mercury (167°C) despite being nearly twice as far from the Sun - the result of a runaway greenhouse effect under its thick carbon dioxide atmosphere, a cautionary tale for climate science. Mercury's modest average also hides brutal extremes, swinging from 430°C by day to -180°C at night because it has no atmosphere to hold heat. From Earth outward, temperature falls off steadily with distance, dropping roughly 30-60 degrees per planet out to Neptune's -200°C. Earth's 15°C average is no accident of position alone: our modest greenhouse effect lifts it about 33 degrees above what our distance from the Sun would otherwise deliver, landing us precisely in the liquid-water zone.
Key Findings
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Planets by Average Temperature
Data Insights
Numbers, trends & sources behind this chartCategory Rankings
Average Temperature (°C) · All Time| # | Category | All Time |
|---|---|---|
| 🥇 | Venus | 464 |
| 🥈 | Mercury | 167 |
| 🥉 | Earth | 15 |
| 4 | Mars | -65 |
| 5 | Jupiter | -110 |
| 6 | Saturn | -140 |
| 7 | Uranus | -195 |
| 8 | Neptune | -200 |
What This Data Shows
Auto-generated trend summaries per categoryFull Data Table
8 records across 1 yearData Sources & References
All external sources cited in this datasetRelated Charts
Planets by Orbital Period Around the Sun Related Chart
Planets by Surface Gravity Related Chart
Planets by Length of Day Related Chart
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