Pemba Island has a tropical monsoon climate with high precipitation figures all year round. Pemba Island has two rainy and two dry periods. The first rainy period is from March till May, the second one is from October till December. Temperatures are very pleasant all year round, about 30 degrees Celsius (86.0 degrees Fahrenheit).
Pemba is also famous for its rich fishing grounds. Between the island and the mainland there is the deep 50 kilometre wide Pemba channel, which is one of the most profitable fishing grounds for game fishing on the Swahili Coast.
A large proportion of the Zanzibar export earnings comes from cloves. The greatest concentration of clove trees is found on Pemba (3.5 million trees) as growing conditions here are superior to those on Unguja island. Clove trees grow to the height of around 10 to 15 metres and can produce crops for over 50 years.