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The dry season is a yearly period of low rainfall, especially in the tropics. The weather in the tropics is dominated by the tropical rain belt, which moves from the northern to the southern tropics and back over the course of the year. The temperate counterpart to the tropical dry season is summer or winter.
There is a dry season which stretches from December to June, and a rainy season from July to November. [71] Saipan's average annual precipitation is 82.36 inches (2,092 mm), with 67 percent falling during the rainy season. [72] Typhoons frequent the island chain, which can lead to excessive rainfall. [73]
The Köppen climate classification is the most widely used climate classification system. [2] It defines a tropical climate as a region where the mean temperature of the coldest month is greater than or equal to 18 °C (64 °F) and does not fit into the criteria for B-group climates, classifying them as an A-group (tropical climate group). [3]
The dry season greatly increases drought occurrence, [39] and is characterized by its low humidity, with watering holes and rivers drying up. Because of the lack of these watering holes, many grazing animals are forced to migrate due to the lack of water in search of more fertile lands.
A dry punch that occurs near the Earth's surface may result in a dry line bulge, whereas a dry punch aloft may increase the potential for severe thunderstorms. dry season An annual period of relatively low or infrequent precipitation , during which weather patterns are typically dominated by lengthy periods of high atmospheric pressure , high ...
A dry season with a noticeable amount of rainfall followed by a rainy wet season. In essence, this version mimics the precipitation patterns more commonly found in a tropical monsoon climate, but do not receive enough precipitation during either the dry season or the year to be classified as such.
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The length and severity of the dry season diminish inland (southward); at the latitude of the Amazon River—which flows eastward, just south of the equatorial line—the climate is Af. East from the Andes, between the dry, arid Caribbean and the ever-wet Amazon are the Orinoco River's Llanos or savannas, from where this climate takes its name.