Taking into account the local weather in Oy is an important factor for planning your visit, especially if you plan to spend your trip poolside. The hottest months are usually July and August with an average temp of 60°F, while the coldest months are January and February with an average of 32°F. The rainiest months in Oy are August, May, June, and July, with each month seeing an average of 7 inches of rainfall.