Land and Resources, Climate
monsoon winds, Red River Delta, average daily temperatures, Mekong Delta, southern Vietnam
Vietnam’s climate is generally hot and humid. In central and southern Vietnam, seasonal variations are slight and marked only by a dry and a wet period. The average daily temperatures in the Mekong Delta range from 17° to 34° C (63° to 93° F) in January and from 22° to 33° C (72° to 91° F) in July. Along the central coast, temperatures range from 18° to 28° C (64° to 83° F) in January and from 24° to 37° C (76° to 99° F) in July. The northern plains experience greater seasonal variations and generally have cooler nighttime temperatures. The average daily temperatures at Hanoi, for example, range from 13° to 20° C (56° to 68° F) in January and from 25° to 33° C (78° to 91° F) in July.
In general, rainfall is plentiful throughout the country, although most precipitation in southern and central Vietnam occurs during the summer months when monsoon winds sweep in from the sea. The Mekong Delta has the longest rainy season, typically lasting from May to October. Central Vietnam receives heavy precipitation from September to December. The average annual rainfall is about 1,680 mm (66 in) in the Red River Delta, 1,650 mm (65 in) along the central coast, and 1,980 mm (78 in) in the Mekong Delta. Typhoons periodically strike the central coast, and in recent years some have caused considerable loss of life and destruction of cropland.
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