Is Illinois Beach State Park good for swimming today?
Illinois Beach State Park has BeachFinder Score: 80/100. Use this as a planning signal only, then check local flags, lifeguards, closures and current beach conditions.
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Illinois Beach State Park
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Shared BeachFinder spot: compare live conditions, water temperature, wind, UV, waves, currents, amenities and nearby alternatives before you leave.
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Quick answer
Quick answer: Illinois Beach State Park today
Illinois Beach State Park is a BeachFinder spot in US-GL, US. Today, compare wind 10 km/h · NW, uv 6.7, waves 0.3 m, water quality Check official advisories before leaving. BeachFinder Score: 80/100. Always check official flags, closures and lifeguard advice before swimming.
Water temperature
Check live marine coverage
Wind
10 km/h · NW
UV
6.7
Waves
0.3 m
Water quality
Check official advisories
Last updated: Aug 17, 12:30 AM local forecast timeBeachFinder Score: 80/100
Sources: Open-Meteo weather and marine forecasts, OpenStreetMap place context and BeachFinder spot data.
This is planning information, not a safety clearance. Conditions can change quickly.
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Live conditions on the site
Surfers can check wind, wave height, currents and surf cues here before opening the full BeachFinder app.
Updated: Aug 17, 12:30 AM
Water temp
—
No marine model here
Air temp
20°C
Feels like
21°C
UV index
6.7
Wind
10 km/h · NW
Gust 30 km/h
Waves
0.3 m
Current
—
No marine model here
Parking
...
Shower
...
Accessible access
...
Toilets
...
Restaurants
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Weather and marine data: Open-Meteo
Illinois Beach State Park
Illinois Beach State Park is a sandy beach in northeastern Illinois, along Lake Michigan, located at coordinates 42.43052, -87.80447. The site is associated with swimming and is part of the Adeline Jay Geo-Karis Illinois Beach State Park, in Lake County. The park includes two units, over six miles of shoreline along Lake Michigan, and approximately 4,160 acres. With the lands to the north, including Chiwaukee Prairie, it forms a large part of the Chiwaukee Prairie Illinois Beach Lake Plain, recognized by the Ramsar Convention. For an outing, it is therefore a lakeside spot in a state park, to be compared with North Point Marina Beach or Waukegan Beach.
About this spot
This spot is aimed at those looking for a sandy beach on Lake Michigan, in a larger state park setting. The distances to nearby beaches exceed 6 km, so it is better to choose this area clearly before heading out.
Updated 5/15/2026
Frequently asked questions
What is the water temperature at Illinois Beach State Park today?
Check live marine coverage. Marine temperature is shown when forecast coverage is available for this location.
How windy is Illinois Beach State Park today?
10 km/h · NW. Wind can change comfort and surface conditions, especially on exposed beaches.
What should I check before swimming at Illinois Beach State Park?
Check official safety flags, lifeguard advice, closures, water-quality advisories, UV, wind, waves and currents before entering the water.
Before you go
Conditions
Compare water temperature, air temperature, feels-like temperature, UV index, wind, waves and currents. Surf-focused data appears when a marine model covers the spot.
Amenities
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Other nearby spots
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Illinois Beach State Park
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