There's nothing like an all-inclusive holiday in Moquegua to rejuvenate you, especially when you know what kind of weather to expect. Here's some information to help you choose when to book: The hottest months are usually September and August, with an average temperature of 17°C, while the coldest months are November and July, with an average of 17°C. August and June are the driest months, while February and January are the rainiest months.