What are the high and low temperatures on Neptune?


Quick Answer

Neptune is the coldest planet in the Solar System, maintaining a fairly consistent average of -200 degrees Celsius. Towards the planet's equator, temperatures can get as cold as -218 degrees Celsius, while temperature at the South Pole is about 10 degrees Celsius warmer.

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Full Answer

The discrepancy in temperature has to do with the fact that Neptune's South Pole is exposed to the sun. Since a year on Neptune is equal to 165 Earth years, the South Pole is the warmest point on the planet for about 75 years at a time. After this, Neptune advances far enough in its orbit that the South Pole no longer receives the most sun exposure.

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