In general, the best time of year to visit weather-wise is in December and January, when everything is still green from the rains, but the sky is clear. If you want to avoid the crowds, travel during the "shoulder" periods of October and November or March and April, near the end or beginning of the rainy season, when the weather is still pretty good. Note: Some of the country's rugged roads become downright impassable without four-wheel-drive during the rainy season.
Ideas by month (click on a month)
Start planning your luxury tailor-made trip to Guatemala by submitting your travel plans: Plan My Trip