There is no neither ideal nor bad time to visit Vietnam as there are distinct regional weather variations between the Northern, Central and Southern regions.
January & February
The weather in north and along the coast of Vietnam in Jan and Feb is very comfortable, and among best months to travel of the year.
March, April and May
March/ April are pretty good too and less busy. It will start to rain more in May, but not all day. Phu Quoc Island is pretty pleasant up till September, when it rains all day. March is one of the best month to travel as it is one of the driest times of the year, although there can be occasional rain showers around Hue and Hoi An.
June-Aug are summer months and extremely hot in northern & central cities. It’s also the wet season in HCMC and the central highlands (and Phu Quoc in the south) and it’s the hottest time of year in Hanoi.
November & December
Nov and Dec are good months to visit Vietnam. not so cold in northern Vietnam at that time, Hanoi about 15-25oC, while Sapa about 10-20oC. The coldest months are Jan and Feb. Central and southern Vietnam are great at that time (except typhoon). The November visit was by far the most comfortable in terms of temperature and humidity (or lack of).
South Vietnam (HCMC and Mekong Delta, Can Tho, Chau Doc), the weather is fine, a little warmish and sticky, but not at all oppressive. No rain, only a few evening dry thunderstorms, very beautiful over the Mekong.
Barcelona is one of the larger Cities located in the center of Spain, that is well known for the architecture, the culture, the ambiance, and the tourism itself.
There are many sighting that can be visited From Gaudy architecture to flamenco concerts in the “plaza” (town center). The primary language is Catalan but the majority of the people speak Castilian as well. Most of the tourist attractions have a higher density of English speaking people. The City of Barcelona consists of 6 districts: Cuitat Vella, Eixample, Gràcia, Sants-Montjuïc, Sant Martí, and the Inland Suburbs.
The Inland Suburbs are north of Gràcia, located by and on the mountains of Barcelona with a beautiful view to most of the surroundings.
Sant Martí is meant to be a gastronomical area, many restaurants and fine bars to go out and enjoy, relax, and feel the ambiance.
Sants-Montjuïc is more of a scenic tourist area, where there are many sights to see, interesting architecture and culture to spare. There are cable cars, a pavilion, the miramar viewpoint is where the cable car takes the passengers to see a spring surrounded with fountains and flowers.
Gràcia is know as a spot for the younger crowd to hang out, but do not let that fool you, for there is where Gaudi built his first building in Barcelona. Also another sight to see is Güell Park located on a hilltop looking over Barcelona.
Eixample was constructed after the vas majority of barcelona during the 19th century meant more for the modernists. La Sagrada Familia is one of the most beautiful sights to see in this entire area, due to the alternative architecture used in construction.
And last but not least is Ciutat Vella, also called Barceloneta (little Barcelona). It’s the “old town”, part of the reconstruction had to do with taking down the wall surrounding part of the city, which resided people, to construct a newer area to make up for the living space. The streets in Ciutat Vella are slim and square, alot like the french. Since it is the “center” it is surrounded by public transportation for easy commute. One of the more important things to remember is certain areas of Spain use different dialects, in the case of Barcelona, they speak Catalan, but since the high demand in tourism, many speak English, and Castilian Spanish.
The Common public transportation methods are: bus, taxi, metro, tramvia, and bicycle rentals.
It is a rather simple city to navigate through by car, but the parking space is small, scarce, and most of the time the have parking meters if its near anything important.
There are significant changes between day and night life in Barcelona. During the day it is more focused on the sights, and at night time it turns into a lit up City, full of people, music, parties, etc…
If the opportunity arises, try to visit. The entire country is beautiful, and full of life. The culture difference can be overwhelming but the trip is worth it.