There's nothing like an all-inclusive holiday in Canaima 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 26°C, while the coldest months are January and February, with an average of 25°C. February and March are the driest months, while August and June are the rainiest months.