June - August; School Holidays
Because so many of Orlando’s visitors are families, there are peaks throughout the year roughly timed with school holidays. The summer months, when school is out, bring a flood of visitors with children and lasts from roughly Memorial Day through Labor Day. So, if you're looking to take a family vacation, and don't want the kids to miss school, summer would be the best time to visit Orlando. The second peak lasts from just after Thanksgiving through the first of the new year and culminates the week between Christmas and New Year, traditionally the busiest of the year. Peaks also occur around major holidays, and especially during school spring break season around Easter time.
September—traditionally a slow month for travel—is Orlando’s slowest time of year. It’s also the heart of the hurricane season (June through November) and there are typically good rates available on hotels from Labor Day through early November.
January - March
The month of January up until President’s Day in February is normally quieter than either December or March. Orlando weather in February, March and April is pleasant, with temperatures generally averaging in the 70s and 80s in the day and cooling off in the upper 50s and 60s for comfortable evenings. If you’re looking to avoid crowds at the theme parks, the best time to visit Orlando is February with its pleasant weather and fewer tourists in general. Visitation builds during March and through spring break, then drops off again until Memorial Day, which kicks off the peak summer months.