Surf Forecast
Issued by NWS Chicago, IL
Issued by NWS Chicago, IL
440
FZUS53 KLOT 300751
SRFLOT
Surf Zone Forecast for Lake Michigan Beaches
National Weather Service Chicago IL
251 AM CDT Tue Sep 30 2025
ILZ006-302145-
Lake-
Including the beaches of Illinois Beach State Park
251 AM CDT Tue Sep 30 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Water Temperature...........63-70.
Weather.....................Partly cloudy. Patchy fog early in the
morning.
High Temperature............In the upper 70s.
Winds.......................Northeast winds around 5 mph,
increasing to around 10 mph in the
afternoon.
.TONIGHT...
Swim Risk*..................High.
Wave Height.................1 to 3 feet building 3 to 5 feet after
midnight.
Weather.....................Partly cloudy, then becoming mostly
cloudy.
Low Temperature.............In the lower 60s.
Winds.......................Northeast winds 10 to 15 mph, becoming
east after midnight.
This is expected to be the final beach forecast of the 2025 season.
The 2026 season will begin just prior to Memorial Day Weekend.
&&
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
$$
ILZ103-104-302145-
Northern Cook-Central Cook-
Including the beaches of Chicago Park District
251 AM CDT Tue Sep 30 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Water Temperature...........59-68.
Weather.....................Mostly sunny.
High Temperature............In the mid 70s.
Winds.......................Northeast winds around 5 mph,
increasing to around 10 mph in the
afternoon.
.TONIGHT...
Swim Risk*..................Moderate.
Wave Height.................1 to 3 feet building 2 to 5 feet after
midnight.
Weather.....................Partly cloudy, then becoming mostly
cloudy.
Low Temperature.............In the lower 60s.
Winds.......................Northeast winds 10 to 15 mph, becoming
east after midnight.
This is expected to be the final beach forecast of the 2025 season.
The 2026 season will begin just prior to Memorial Day Weekend.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$
INZ001-302145-
Lake-
Including the beaches of Indiana Dunes National Park
251 AM CDT Tue Sep 30 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Water Temperature...........64-68.
Weather.....................Mostly sunny. Patchy fog early in the
morning.
High Temperature............In the upper 70s.
Winds.......................Northeast winds 5 to 10 mph.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Partly cloudy.
Low Temperature.............Around 60.
Winds.......................Northeast winds around 10 mph, becoming
east after midnight.
This is expected to be the final beach forecast of the 2025 season.
The 2026 season will begin just prior to Memorial Day Weekend.
&&
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
$$
INZ002-302145-
Porter-
Including the beaches of Indiana Dunes National Park
251 AM CDT Tue Sep 30 2025
.TODAY...
Swim Risk*..................Low.
Wave Height.................1 to 2 feet.
Water Temperature...........64-68.
Weather.....................Mostly sunny. Patchy fog early in the
morning.
High Temperature............In the mid 70s.
Winds.......................Northeast winds 5 to 10 mph, becoming
north late.
.TONIGHT...
Swim Risk*..................Low.
Wave Height.................1 to 3 feet.
Weather.....................Partly cloudy.
Low Temperature.............In the upper 50s.
Winds.......................Northeast winds 5 to 10 mph, becoming
east after midnight.
This is expected to be the final beach forecast of the 2025 season.
The 2026 season will begin just prior to Memorial Day Weekend.
&&
Swim Risk Category
* Low Risk - Large waves and dangerous currents are not expected,
however dangerous currents may exist at any time near piers,
breakwalls, and river outlets.
* Moderate Risk - Breaking waves and currents are expected. Stay away
from dangerous areas like piers, breakwalls, and river outlets.
Always have a flotation device with you in the water.
* High Risk - Life-threatening waves and currents are expected. Stay
out of the water and stay away from dangerous areas like piers and
breakwalls.
** For thunderstorm, waterspout, and UV definitions see:
https://www.weather.gov/beach/lot
$$