When you are planning your trip you should make sure that you have done your research to the best of your ability so that you get the most out of your trip. You can visit the country all through summer with ease.
However, from July until September the country will have their rainy season, which would make going out for sightseeing or other activities difficult.
The top time to visit the country is from November until March, which is the winter and the temperature will be a bit cooler. Make sure that you bring the appropriate clothing because it can get cold at night. Another thing that you should take into consideration when planning when to visit is the festivals. There are a few and they should be experienced.