Weather

Vietnam has a very diverse climate because its territory extends over many latitudes and spreads in various altitudes. Although the country as a whole is located in the intertropical zone, local conditions vary from the frigid winter in the northernmost mountains to the permanent subequatorial heat in the Mekong Delta. As about a third of Vietnam is more than 500 m above sea level, much of the country has a subtropical climate, and even temperate above 2000 m.

Located in the monsoon zone of East Asia, Vietnam knows two per year. They give rhythm to rural life. The winter monsoon mainly affects the area north of Danang and arrives north-east between October and March. It causes cool, damp winters in all regions north of Nha Trang and a mild, dry weather in the south. From April - May to October, the south-west monsoon drives its winds laden with accumulated moisture in the Indian Ocean and the Siam Globe. It brings warm, humid weather throughout the country except in areas protected by mountains (as in the lower coastal regions of the center or the Red River Delta).
Between July and November, typhoons as violent as unpredictable often come from the ocean to the east. They strike the center or the north of the country, causing terrible devastation.
Most of Vietnam receives about 2000 mm of rain per year, although some areas of the Highlands are more watered (up to 33000 mm).


TEMPERATURE
 
Hanoi ( North)
Danang (center)
Saigon(South)
MoisAv. Temp
(Celsius)
Av.Rainfall
(mm)
Av. Temp
(Celsius)
Av.Rainfall
(mm)
Av. Temp
(Celsius)
Av.Rainfall
(mm)
Jan1718221012715
Feb18282231284
Mar203824122913
Apr248127183042
May28197294729221
Jun30238304229331
Jul30322309928314
Aug293432811728268
Sep282522644727334
Oct26982453027268
Nov22422222127114
Dec1921212082756

The North
The areas north of the 18th parallel have two seasons: winter and summer. The winter, quite cool and humid, comes with the irregular monsoon of the northeast and normally lasts from November to April. February and March are characterized by an eternal drizzle that the Vietnamese call '' dust of rain ''. Hot summers begin in May, last until October and sometimes bring devastating typhoons.

The center
The southwest monsoon does not water the coastal lowlands (April-May to October) because the Annamite cordillera is very wet during this period. Most of the precipitation on the coastal strip arrives between December and February with the northeast monsoon. Thus the dry season lasts from January to August in Nha Trang, but from December to March in Dalat.
Like the rest of the High Plateaux, Dalat enjoys a much cooler temperature than the Mekong Delta or the coastal strip. It is between 20º and 25ºC of November and March. The cold, humid winter of the coastal lowlands of the northern center is accompanied by fog and drizzle.

South
This region enjoys a subequatorial climate, with a dry season and a wet season. It lasts from May to November (June, July and August are the wettest months). This period is marked by brief but almost daily torrential downpours, generally in the afternoon. The dry season extends from December to April. From late February to May, the weather is very wet, but the situation improves with the arrival of the summer rains.
The average annual temperature in Ho Chi Minh City is 27ºC. It slightly exceeds 30ºC in April and drops to 21ºC in January. On average, the humidity is 80% and rainfall of 1979 mm per year. The coldest temperature ever recorded in Ho Chi Minh City was 14ºC.


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