You might spend a lot of your vacation inside, but if you're planning to venture beyond the casino, taking a look at local weather data can help you. The hottest months are usually July and August with an average temp of 66°F, while the coldest months are January and February with an average of 30°F. The snowiest months in Ogunquit are January, February, March, and April, with each month seeing an average of 5 inches of snowfall.