There's nothing like an all-inclusive holiday in Gran Sabana to refresh you, especially when you know what kind of weather to expect. Here's some information to help you decide when to book: The hottest months are usually September and October, with an average temperature of 23°C, while the coldest months are January and February, with an average of 22°C. January and February are the driest months, while June and July are the rainiest months.