Surf Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
081
FZUS53 KLOT 220821
SRFLOT
Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
321 AM CDT Fri Aug 22 2025
ILZ006-222130-
Lake-
Including the beaches of Illinois Beach State Park
321 AM CDT Fri Aug 22 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Water Temperature...........70-74.
Weather.....................Partly cloudy.
High Temperature............In the lower 80s.
Winds.......................West winds around 5 mph, becoming
southeast in the afternoon.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Mostly cloudy. A slight chance of
showers late.
Low Temperature.............In the upper 60s.
Winds.......................Southeast winds 5 to 10 mph, becoming
southwest in the late evening and
overnight.
.SATURDAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Partly cloudy, then becoming mostly
sunny. A slight chance of showers. A
slight chance of thunderstorms in the
afternoon.
High Temperature............Around 80.
Winds.......................West winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.SATURDAY NIGHT...Low swim risk*.
.SUNDAY...Low swim risk*.
.SUNDAY NIGHT...Low swim risk*.
.MONDAY...Low swim risk*.
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$
ILZ103-104-222130-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
321 AM CDT Fri Aug 22 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Water Temperature...........69-73.
Weather.....................Partly cloudy.
High Temperature............Around 80.
Winds.......................Northwest winds around 5 mph, becoming
east in the afternoon.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Partly cloudy.
Low Temperature.............In the upper 60s.
Winds.......................Southeast winds 5 to 10 mph, becoming
southwest late.
.SATURDAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A slight chance of showers. A
slight chance of thunderstorms in the
afternoon.
High Temperature............In the lower 80s.
Winds.......................West winds around 10 mph.
.SWIM RISK OUTLOOK...
.SATURDAY NIGHT...Low swim risk*.
.SUNDAY...Low swim risk*.
.SUNDAY NIGHT...Low swim risk*.
.MONDAY...Low swim risk*.
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$
INZ001-222130-
Lake-
Including the beaches of Indiana Dunes National Park
321 AM CDT Fri Aug 22 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Water Temperature...........72-76.
Weather.....................Partly cloudy.
High Temperature............Around 80.
Winds.......................Light and variable winds, becoming west
around 5 mph late in the morning, then
becoming northeast in the afternoon.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Partly cloudy.
Low Temperature.............In the upper 60s.
Winds.......................East winds around 5 mph, becoming south
around 5 mph in the late evening and
early morning, then becoming southwest
late.
.SATURDAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A slight chance of showers. A
slight chance of thunderstorms in the
afternoon.
High Temperature............In the lower 80s.
Winds.......................West winds 5 to 10 mph.
.SWIM RISK OUTLOOK...
.SATURDAY NIGHT...Moderate swim risk*.
.SUNDAY...Low swim risk*.
.SUNDAY NIGHT...Moderate swim risk*.
.MONDAY...Moderate swim risk*.
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Moderate swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$
INZ002-222130-
Porter-
Including the beaches of Indiana Dunes National Park
321 AM CDT Fri Aug 22 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Water Temperature...........72-76.
Weather.....................Partly cloudy.
High Temperature............In the upper 70s.
Winds.......................Southwest winds around 5 mph, becoming
north around 5 mph in the afternoon.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Partly cloudy.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds around 5 mph, becoming
south around 5 mph in the late evening
and early morning, then becoming
southwest late.
.SATURDAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A slight chance of showers in
the morning. A chance of showers and a
slight chance of thunderstorms in the
afternoon.
High Temperature............In the lower 80s.
Winds.......................West winds 5 to 10 mph, becoming around
10 mph late.
.SWIM RISK OUTLOOK...
.SATURDAY NIGHT...Moderate swim risk*.
.SUNDAY...Moderate swim risk*.
.SUNDAY NIGHT...High swim risk*.
.MONDAY...High swim risk*.
.MONDAY NIGHT...Moderate swim risk*.
.TUESDAY...Moderate swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$