The dry season in Zanzibar is from June to October and the most popular time to visit. During this period, conditions are cooler. Another popular time to visit is from December to February when it is hot and dry. The main rainy season, known as the ‘long rains’ is from March to May when afternoon tropical downpours are the norm.
During November and December there is another rainy season known as the ‘short rains’ when rainfall is much lighter.