* Tropical Climate: If you're focusing on temperature, then the opposite of a polar climate would be a tropical climate. This is characterized by consistently high temperatures and abundant rainfall.
* Temperate Climate: If you're considering the overall range of temperatures and precipitation, then temperate climates might be considered the opposite. These climates have moderate temperatures and rainfall throughout the year.
* Equatorial Climate: If you're looking at the position on Earth, then an equatorial climate would be the opposite of a polar climate. This climate is found near the equator and is characterized by consistently warm temperatures and heavy rainfall.
Ultimately, the "opposite" of a polar climate depends on what aspect of the climate you are considering.