Vietnam is geographically located in the tropical zone, with the top North region on temperate zone. Therefore, its climate is not consistent throughout the country. In fact, the weather varies significantly by latitude and longitude.
Month Hanoi Temp HCMC Temp Read more
January 17 C degree 26.5 C degree Vietnam in January
February 18 C degree 27.5 C degree Vietnam in February
March 20 C degree 29 C degree Vietnam in March
April 24 C degree 30 C degree Vietnam in April
May 28 C degree 29 C degree Vietnam in May
June 30 C degree 28 C degree Vietnam in June
July 29 C degree 28 C degree Vietnam in July
August 29 C degree 28 C degree Vietnam in August
September 28 C degree 28 C degree Vietnam in September
October 25 C degree 28 C degree Vietnam in October
November 27 C degree 27 C degree Vietnam in November
December 19 C degree 26.5 C degree Vietnam in December
The North (Hanoi, Halong Bay) is monsoonal with hot and rainy season from April to September and cool dry season from October to March. October and November are the best months to visit since you avoid the domestic tourist flow and also experience a more comfortable temperature and humidity compared with other months.
The Central part of Vietnam (Hue, Da Nang and Hoi An) receives dry and hot Southwest wind which makes it strenuous for any brisk walk during the day. Closer to the beach, the level of severity reduced and the dry wind is replaced by cool ocean breeze. Because of the limited land area, central Vietnam is also most susceptible to natural disasters such as hurricane or flooding. The paradox is, it is also where most beautiful beaches lie.
The South (Ho Chi Minh City, Nha Trang, Mui Ne) is typically hot all year round with two main seasons: rainy and dry. It is also the most predictable region in terms of weather. Summer months from May to August might not be the best time to hit the road since most tourists destinations are packed with tourists and downpours happen quite frequently.
The mountain area in Northwest and South central Vietnam see little fluctuation in weather condition. It is fairly cool all year round and a great place to escape the heat from cities. The rainy season is also from May to September. At the extreme you can see snow or flurry in December or January in Sapa (see Sapa Weather details).