Visiting local bars in Captain Cook is better when the weather is good. These temperatures and rainfall averages can help you decide the best time for bar-hopping. The hottest months are usually August and July, with an average temperature of 21°C, while the coldest months are January and February, with an average of 18°C. The rainiest months in Captain Cook are August, July, September and June, with each month seeing an average of 437 mm of rainfall.