Surf Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
295
FZUS53 KLOT 172028
SRFLOT
Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
328 PM CDT Sun Aug 17 2025
ILZ006-180915-
Lake-
Including the beaches of Illinois Beach State Park
328 PM CDT Sun Aug 17 2025
...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...
.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Water Temperature...........70-74.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................Northeast winds around 10 mph with
gusts up to 20 mph.
.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Weather.....................Partly cloudy, then becoming mostly
cloudy.
Low Temperature.............Around 70.
Winds.......................Northeast winds around 10 mph, becoming
east after midnight.
.MONDAY...
Swim Risk*..................High.
Wave Height.................4 to 6 feet subsiding to 1 to 3 feet in
the afternoon.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A slight chance of showers and
thunderstorms late in the morning, then
a chance of showers and thunderstorms
in the afternoon.
High Temperature............In the lower 80s.
Winds.......................Southeast winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...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
$$
ILZ103-104-180915-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
328 PM CDT Sun Aug 17 2025
...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...
.REST OF TODAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Water Temperature...........72-76.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................Northeast winds around 10 mph.
.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 6 feet.
Weather.....................Partly cloudy, then becoming mostly
cloudy.
Low Temperature.............In the lower 70s.
Winds.......................Northeast winds 10 to 15 mph, becoming
east after midnight.
.MONDAY...
Swim Risk*..................High.
Wave Height.................4 to 6 feet subsiding to 1 to 2 feet in
the afternoon.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A chance of showers and
thunderstorms in the afternoon.
High Temperature............In the mid 80s.
Winds.......................Southeast winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...High swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$
INZ001-180915-
Lake-
Including the beaches of Indiana Dunes National Park
328 PM CDT Sun Aug 17 2025
...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...
.REST OF TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Water Temperature...........74-78.
Weather.....................Mostly cloudy.
High Temperature............In the lower 80s.
Winds.......................Northeast winds 5 to 10 mph.
.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Weather.....................Partly cloudy, then becoming mostly
cloudy.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds 10 to 15 mph, becoming
east after midnight.
.MONDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 1 to 2 feet in
the afternoon.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A chance of showers and thunderstorms
in the afternoon.
High Temperature............In the mid 80s.
Winds.......................Southeast winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...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
$$
INZ002-180915-
Porter-
Including the beaches of Indiana Dunes National Park
328 PM CDT Sun Aug 17 2025
...BEACH HAZARDS STATEMENT IN EFFECT THROUGH MONDAY MORNING...
.REST OF TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Water Temperature...........74-78.
Weather.....................Mostly cloudy.
High Temperature............In the upper 70s.
Winds.......................North winds around 10 mph.
.TONIGHT...
Swim Risk*..................High.
Wave Height.................3 to 5 feet.
Weather.....................Partly cloudy, then becoming mostly
cloudy.
Low Temperature.............In the upper 60s.
Winds.......................Northeast winds 10 to 15 mph, becoming
east after midnight.
.MONDAY...
Swim Risk*..................High.
Wave Height.................3 to 5 feet subsiding to 1 to 2 feet in
the afternoon.
Weather.....................Partly cloudy. A slight chance of
showers and thunderstorms in the
afternoon.
High Temperature............In the mid 80s.
Winds.......................Southeast winds around 10 mph.
.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Moderate swim risk*.
.WEDNESDAY...High swim risk*.
.WEDNESDAY NIGHT...High swim risk*.
.THURSDAY...Moderate swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$