Susan F. Hayashi

Summerfest 2025 Milwaukee Dates. Find the date, time and stage for each act here. Discover great performances and make amazing memories with multiple festival stages of live music, experiences, and more.

Here’s a confirmed list of dates and locations for outdoor festivals and fairs taking place in the milwaukee area in 2025, from late may through early september. Summerfest announces 40 percent jump in attendance for 2023, dates for 2025.