Sheboygan County Weather Watch for Thursday, May 21: Lake Michigan Waves Build Friday Night and Saturday

ByBrian Bateman
Share

Sheboygan County, Wisconsin — Thursday, May 21, 2026.

Boaters planning a Lake Michigan trip from Sheboygan County should watch the waves closely Friday night into Saturday. The National Weather Service Milwaukee/Sullivan nearshore marine forecast for LMZ643, Sheboygan to Port Washington WI was issued at 1:10 a.m. CDT Thursday, May 21, and keeps waves in the 2 to 4 foot range through Friday.

Friday night on the waters east of Sheboygan

The offshore point forecast for the 17NM ESE Sheboygan WI location was last updated at 6:41 a.m. CDT Thursday, May 21. It calls for 3 to 4 foot waves Friday night, with 2 to 3 foot waves on Saturday.

What that means for weekend plans

That is enough chop to matter for small boats, fishing trips, and shoreline activities. Friday daytime looks calmer than Friday night, but anyone launching late Friday or Saturday should check the latest NWS marine forecast before heading out.

Sources

Related Posts

Sheboygan Life Publisher

Brian Bateman is a lifelong Sheboygan County resident, web developer, and founder of SheboyganLife.com. Inspired by his love for the area and a desire to give back, he created this free, community-driven platform to share local events, stories, and happenings.

A graduate of Plymouth and Sheboygan South High Schools and the UW Center in Sheboygan, Brian has spent his career building digital solutions across Wisconsin for clients around the world.

From local event coverage to boosting small businesses, Brian’s mission is simple: spotlight what makes Sheboygan special, support the locals behind it, and keep the community connected, informed, and on the grow.

Leave a Reply