644
FZUS53 KLOT 311443
SRFLOT

Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
943 AM CDT Sun Aug 31 2025

ILZ006-312115-
Lake-
Including the beaches of Illinois Beach State Park
943 AM CDT Sun Aug 31 2025

.REST OF TODAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Water Temperature...........69-73.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Variable winds around 5 mph, becoming east
                            around 10 mph in the afternoon.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly clear.
Low Temperature.............In the lower 60s.
Winds.......................East winds 5 to 10 mph until early
                            morning, becoming light and variable.

.LABOR DAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................North winds around 5 mph, becoming east
                            in the late morning and afternoon.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low swim risk*.
.WEDNESDAY NIGHT...Low swim risk*.
.THURSDAY...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

$$

ILZ103-104-312115-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
943 AM CDT Sun Aug 31 2025

.REST OF TODAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Water Temperature...........66-70.
Weather.....................Partly cloudy, then becoming mostly
                            sunny.
High Temperature............In the lower 70s.
Winds.......................Variable winds around 5 mph, becoming east
                            around 10 mph in the afternoon.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly clear.
Low Temperature.............In the mid 60s.
Winds.......................East winds 5 to 10 mph, becoming
                            southeast late.

.LABOR DAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Southeast winds around 5 mph, becoming
                            northeast in the afternoon.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low swim risk*.
.WEDNESDAY NIGHT...Moderate 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

$$

INZ001-312115-
Lake-
Including the beaches of Indiana Dunes National Park
943 AM CDT Sun Aug 31 2025

.REST OF TODAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Water Temperature...........70-74.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Variable winds around 5 mph, becoming
                            northeast around 10 mph in the afternoon.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly clear.
Low Temperature.............Around 60.
Winds.......................East winds 5 to 10 mph, becoming
                            southeast late.

.LABOR DAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Southeast winds around 5 mph, becoming
                            northeast in the afternoon.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low 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

$$

INZ002-312115-
Porter-
Including the beaches of Indiana Dunes National Park
943 AM CDT Sun Aug 31 2025

.REST OF TODAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Water Temperature...........70-74.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Variable winds around 5 mph, becoming
                            northeast around 10 mph in the afternoon.

.TONIGHT...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly clear.
Low Temperature.............In the upper 50s.
Winds.......................Northeast winds 5 to 10 mph, becoming
                            southeast after midnight.

.LABOR DAY...
Swim Risk*..................Low.
Wave Height.................Around 1 foot.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Southeast winds around 5 mph, becoming
                            northeast in the afternoon.

.SWIM RISK OUTLOOK...
.MONDAY NIGHT...Low swim risk*.
.TUESDAY...Low swim risk*.
.TUESDAY NIGHT...Low swim risk*.
.WEDNESDAY...Low 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


$$