What's the weather like in July & August?
It will probably be raining, which means that there is rainfall 3-7 times a week, lasting for 1/2-2 hours a day. It can be really intense though, heavy showers are one of the raining season's qualities. The temperature will range from about 24-32 Celcius (75-90F). I personally like the raining season because everything is very green and it's pretty cool to see how hard it can rain. Because it's never rainy the whole day, it's not like your whole vacation will rain away. Some unpaved roads will be rather muddy, but all main roads are paved so you can easily get around. Overall, July - August is a good period to come I'd say.