There's nothing like an all-inclusive holiday in Cochrane to rejuvenate you, especially when you know what to expect from the elements. Here's some information to help you decide when to book: The hottest months are usually February and January, with an average temperature of 10°C, while the coldest months are July and June, with an average of 1°C. February and September are the driest months, while May and June are the rainiest months.