Minnesota Beach Conditions: Swim Risk and Surf

The National Weather Service Swim Risk for each of the 1 Minnesota forecast zones is reproduced above exactly as the issuing office wrote it, with the issuance time attached, so you can read the official product for the specific zone you are standing in. No forecast can tell you the water is safe: swim near a lifeguard, read the flag flying on that beach, and treat piers and jetties as permanently dangerous regardless of the category.

Low Swim Risk means large waves and dangerous currents are not expected, however dangerous currents may exist at any time near piers, breakwalls, and river outlets. That is the official definition, quoted from NWS Instruction 10-320 (June 5, 2025), section 2.7.1. The second half of that sentence is the part people skip: structural current beside a pier or breakwall does not need a windy day.

One National Weather Service forecast office covers the Minnesota coast: DLH. Between them they issue 1 surf zone forecast zones, including Carlton/Southern St. Louis-Douglas. Each office writes its own product, which is why two adjacent stretches of the same coast can carry different categories on the same afternoon.

NWS Instruction 10-320 says the Surf Zone Forecast should be issued at least once per day on a seasonal basis, and caps its expiration at 24 hours from issuance. Some offices reissue more often than that; NWS Milwaukee, for example, writes its beach forecast twice a day. This page shows the issuance time on every zone and flags any product older than 12 hours, because a forecast written this morning is a different thing from one written yesterday.

A Rip Current Statement carries rip current information only, and NWS issues it to highlight a moderate or high rip current threat. A Beach Hazards Statement covers everything else, including dangerous currents, unusually cold water, lightning along the shoreline, and unusual surf that does not meet advisory criteria. NWS Instruction 10-320 says Gulf and southern Atlantic offices primarily use the Rip Current Statement, while West Coast and Great Lakes offices primarily use the Beach Hazards Statement. A High Surf Advisory is a separate, criteria based product for breaking wave action that threatens life and property.

Current NWS guidance leads with relaxing: a rip current does not pull you under, it carries you out. Do not try to swim directly into shore. Swim along the shoreline until you escape the current's pull, then swim at an angle toward the beach. If you feel you cannot reach shore, relax, face the shore, and call or wave for help. If you are on the beach and someone else is caught, alert the lifeguard or call 911, throw them something that floats, and do not swim out to them: NWS notes that many would-be rescuers have drowned trying to help.

People are generally in the water in Minnesota from around June 15 to September 1, with the busiest stretch July 10 to August 20. The Minnesota swim season is the shortest of the Great Lakes states: the water is not reasonably swimmable until well into June, peaks in July and early August in the mid 60s, and closes out by early September.

Minnesota has essentially one guarded Great Lakes swim area: the designated zone behind the Park Point Beach House in Duluth, where the Duluth Area Family YMCA staffs a lifeguard through the summer, typically 11 am to 4 pm. That program pulls the guard whenever the air is below 55 degrees or the water is below 40 degrees, which happens more often than visitors expect. Everything else along the Minnesota North Shore, including Brighton Beach and the Two Harbors shoreline, is unguarded.