Surf Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
702
FZUS53 KLOT 171951
SRFLOT
Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
251 PM CDT Mon Aug 17 2026
ILZ006-182000-
Lake-
Including the beaches of Illinois Beach State Park
251 PM CDT Mon Aug 17 2026
.REST OF TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Water Temperature...........71-75.
Weather.....................Partly cloudy. Isolated showers.
High Temperature............In the mid 70s.
Winds.......................Northeast winds 5 to 10 mph.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Mostly clear.
Low Temperature.............In the mid 60s.
Winds.......................South winds around 10 mph, becoming
southwest after midnight.
.TUESDAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Partly cloudy, then becoming mostly
cloudy. A slight chance of showers and
thunderstorms early in the afternoon. A
chance of showers and thunderstorms
late.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 10 to 15 mph.
.SWIM RISK OUTLOOK...
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low swim risk*.
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...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
$$
ILZ103-104-182000-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
251 PM CDT Mon Aug 17 2026
.REST OF TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Water Temperature...........70-74.
Weather.....................Partly cloudy. Isolated showers.
High Temperature............In the upper 70s.
Winds.......................Northeast winds 5 to 10 mph.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Mostly clear.
Low Temperature.............In the upper 60s.
Winds.......................Southeast winds around 10 mph, becoming
southwest in the late evening and
overnight.
.TUESDAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Partly cloudy, then becoming mostly
cloudy. A slight chance of showers and
thunderstorms late.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 5 to 10 mph.
.SWIM RISK OUTLOOK...
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low swim risk*.
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$
INZ001-182000-
Lake-
Including the beaches of Indiana Dunes National Park
251 PM CDT Mon Aug 17 2026
.REST OF TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Water Temperature...........72-76.
Weather.....................Partly cloudy. Isolated showers.
High Temperature............In the mid 70s.
Winds.......................North winds 5 to 10 mph.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Mostly clear.
Low Temperature.............In the mid 60s.
Winds.......................North winds around 5 mph, becoming
southwest in the late evening and
overnight.
.TUESDAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Partly cloudy, then becoming mostly
cloudy. A slight chance of showers and
thunderstorms late.
High Temperature............In the lower 80s.
Winds.......................Southwest winds 5 to 10 mph.
.SWIM RISK OUTLOOK...
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low swim risk*.
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...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
$$
INZ002-182000-
Porter-
Including the beaches of Indiana Dunes National Park
251 PM CDT Mon Aug 17 2026
.REST OF TODAY...
Swim Risk*..................Moderate.
Wave Height.................2 to 4 feet.
Water Temperature...........72-76.
Weather.....................Partly cloudy.
High Temperature............In the mid 70s.
Winds.......................North winds 5 to 10 mph.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Mostly clear.
Low Temperature.............In the mid 60s.
Winds.......................North winds around 5 mph, becoming
southwest around 5 mph in the late
evening and overnight.
.TUESDAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Weather.....................Partly cloudy, then becoming mostly
cloudy. A slight chance of showers and
thunderstorms late.
High Temperature............Around 80.
Winds.......................Southwest winds 5 to 10 mph.
.SWIM RISK OUTLOOK...
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low swim risk*.
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...Low swim risk*.
.THURSDAY NIGHT...Low swim risk*.
.FRIDAY...Low swim risk*.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$