The best time to go to Mankato is during the late spring, summer, or early autumn months, roughly from May to October, when the weather is most agreeable for outdoor activities and local events.For those who enjoy outdoor recreation, summer (June to August) is ideal. The Minnesota River offers opportunities for kayaking and fishing, and the numerous parks, like Sibley Park, are great for picnics and strolls. The city also hosts various outdoor concerts and festivals during these months, making it a lively time to visit for families and couples.If you prefer cooler temperatures and fewer crowds, late spring (May) and early autumn (September to October) are excellent choices. The foliage in autumn, particularly along the Minnesota River Valley Scenic Byway, is picturesque for couples looking for a scenic drive.