Topic summary
Subtropic

Extracted from the Wikipedia article Subtropics.
Humid subtropical climate
In most humid subtropical climates, summer is the wettest season. In summer, the subtropical high pressure cells provide a sultry southernly flow of tropical air with high dew points, and frequent (but brief) convective showers are common. With decreasing latitude most humid subtropical climates typically have drier winters and wetter summers, however some sectors with this climate see a more even rhythm of seasonal rainfall. Tropical lows and weakening tropical storms often contribute to seasonal rainfall in most humid subtropical climates. In the cool season (winter) when the subtropical highs retreat, the humid subtropics are more influenced by the westerlies and the fronts and storms that move with them.