Surf Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
898
FZUS53 KLOT 151217
SRFLOT
Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
717 AM CDT Tue Sep 15 2026
ILZ006-160830-
Lake-
Including the beaches of Illinois Beach State Park
717 AM CDT Tue Sep 15 2026
.TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet subsiding to 1 to 3 ft.
Water Temperature...........66-70.
Weather.....................Mostly cloudy. Showers and a chance of
thunderstorms in the morning, then a
chance of showers and a slight chance
of thunderstorms in the afternoon.
High Temperature............In the upper 70s.
Winds.......................Southwest winds 15 to 20 mph, becoming
west around 10 mph late.
.TONIGHT...
Swim Risk*..................Moderate.
Wave Height.................1 to 3 feet building to 2 to 4 feet.
Weather.....................Mostly cloudy. A slight chance of
showers and thunderstorms early in the
evening. A slight chance of showers
after midnight.
Low Temperature.............In the mid 60s.
Winds.......................Northwest winds around 10 mph, becoming
north after midnight.
.WEDNESDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly cloudy. A chance of showers,
mainly in the morning.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.WEDNESDAY NIGHT...Moderate swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Moderate swim risk*.
.FRIDAY...High swim risk*.
.FRIDAY NIGHT...High swim risk*.
.SATURDAY...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
$$
ILZ103-160830-
Northern Cook-
717 AM CDT Tue Sep 15 2026
.TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet subsiding to 1 to 3 feet.
Water Temperature...........67-71.
Weather.....................Mostly cloudy. Showers likely and a
chance of thunderstorms in the morning,
then a chance of showers and a slight
chance of thunderstorms in the
afternoon.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 15 to 20 mph, becoming
west around 10 mph late.
.TONIGHT...
Swim Risk*..................Moderate.
Wave Height.................1 to 3 feet building to 2 to 4 feet.
Weather.....................Mostly cloudy. A chance of
thunderstorms in the evening. A chance
of showers. A slight chance of
thunderstorms after midnight.
Low Temperature.............In the upper 60s.
Winds.......................North winds around 10 mph, becoming
northeast 10 to 15 mph late.
.WEDNESDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly cloudy. A chance of showers.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.WEDNESDAY NIGHT...Moderate swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Moderate swim risk*.
.FRIDAY...High swim risk*.
.FRIDAY NIGHT...High swim risk*.
.SATURDAY...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
$$
ILZ104-160830-
Central Cook-
Including the beaches of Chicago Park District
717 AM CDT Tue Sep 15 2026
...BEACH HAZARDS STATEMENT IN EFFECT UNTIL 7 AM CDT THIS MORNING...
.TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet subsiding to 1 to 3 feet.
Water Temperature...........67-71.
Weather.....................Mostly cloudy. Showers likely and a
chance of thunderstorms in the morning,
then a chance of showers and a slight
chance of thunderstorms in the
afternoon.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 15 to 20 mph, becoming
west around 10 mph late.
.TONIGHT...
Swim Risk*..................Moderate.
Wave Height.................1 to 3 feet building to 2 to 4 feet.
Weather.....................Mostly cloudy. A chance of
thunderstorms in the evening. A chance
of showers. A slight chance of
thunderstorms after midnight.
Low Temperature.............In the upper 60s.
Winds.......................North winds around 10 mph, becoming
northeast 10 to 15 mph late.
.WEDNESDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly cloudy. A chance of showers.
High Temperature............In the lower 70s.
Winds.......................Northeast winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.WEDNESDAY NIGHT...Moderate swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Moderate swim risk*.
.FRIDAY...High swim risk*.
.FRIDAY NIGHT...High swim risk*.
.SATURDAY...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
$$
INZ001-160830-
Lake-
Including the beaches of Indiana Dunes National Park
717 AM CDT Tue Sep 15 2026
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Water Temperature...........64-68.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A chance of showers and
thunderstorms.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 10 to 15 mph, becoming
around 10 mph late.
.TONIGHT...
Swim Risk*..................Moderate.
Wave Height.................1 to 3 feet building to 2 to 4 feet.
Weather.....................Mostly cloudy. A chance of
thunderstorms in the evening. Showers
likely. A slight chance of
thunderstorms after midnight.
Low Temperature.............In the upper 60s.
Winds.......................North winds 5 to 10 mph, becoming
northeast late.
.WEDNESDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly cloudy. A slight chance of
thunderstorms early in the morning. A
chance of showers. A slight chance of
thunderstorms in the afternoon.
High Temperature............In the mid 70s.
Winds.......................Northeast winds 5 to 10 mph.
.SWIM RISK OUTLOOK...
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Moderate swim risk*.
.FRIDAY...Moderate swim risk*.
.FRIDAY NIGHT...Low swim risk*.
.SATURDAY...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
$$
INZ002-160830-
Porter-
Including the beaches of Indiana Dunes National Park
717 AM CDT Tue Sep 15 2026
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Water Temperature...........64-68.
Weather.....................Mostly cloudy, then becoming partly
cloudy. A chance of thunderstorms in
the morning. A chance of showers. A
slight chance of thunderstorms in the
afternoon.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 15 to 20 mph,
diminishing to around 10 mph in the
afternoon.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Mostly cloudy. A chance of
thunderstorms in the evening. Showers
likely. A slight chance of
thunderstorms after midnight.
Low Temperature.............In the upper 60s.
Winds.......................North winds around 10 mph, becoming
northeast late.
.WEDNESDAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Weather.....................Mostly cloudy. Showers likely and a
slight chance of thunderstorms early in
the morning, then a chance of showers
in the late morning and afternoon. A
slight chance of thunderstorms in the
afternoon.
High Temperature............In the mid 70s.
Winds.......................Northeast winds 5 to 10 mph.
.SWIM RISK OUTLOOK...
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
.FRIDAY NIGHT...Low swim risk*.
.SATURDAY...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
$$