Mid-latitude troughs dig to the south while tropical trough amplify to the north. This is due to tropical troughs being generally south of high pressure. They also propagate in the opposite direction from mid-latitude troughs. Tropical troughs generally follow the prevailing easterlies. Tropical environments have a lack of fronts.
Weather is fairly uniform throughout the year as far as temperature goes.
At low elevations, temperature is a primary function of cloud cover. During the rainy season, temperatures will tend to be a little cooler. In places where high pressure dominates year round, temperatures only change slightly. This slight change is due to the earth's tilt. The earth's tilt causes precipitation patterns to change throughout the year.