401
FZUS53 KLOT 212016
SRFLOT
SURF ZONE FORECAST FOR LAKE MICHIGAN BEACHES
NATIONAL WEATHER SERVICE CHICAGO IL
316 PM CDT FRI AUG 21 2026
ILZ006-222030-
LAKE-
INCLUDING THE BEACHES OF ILLINOIS BEACH STATE PARK
316 PM CDT FRI AUG 21 2026
REST OF TODAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 2 FEET.
WATER TEMPERATURE...........71-75.
WEATHER.....................MOSTLY CLOUDY. SHOWERS AND
THUNDERSTORMS LIKELY.
HIGH TEMPERATURE............AROUND 80.
WINDS.......................SOUTH WINDS 10 TO 15 MPH.
TONIGHT
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WEATHER.....................MOSTLY CLOUDY, THEN BECOMING PARTLY
CLOUDY. SHOWERS AND THUNDERSTORMS
LIKELY EARLY IN THE EVENING, THEN A
CHANCE OF SHOWERS AND THUNDERSTORMS
LATE IN THE EVENING. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT.
LOW TEMPERATURE.............IN THE MID 60S.
WINDS.......................SOUTHWEST WINDS 5 TO 10 MPH, BECOMING
WEST AFTER MIDNIGHT.
SATURDAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WEATHER.....................PARTLY CLOUDY. SCATTERED SHOWERS AND A
SLIGHT CHANCE OF THUNDERSTORMS IN THE
AFTERNOON.
HIGH TEMPERATURE............IN THE UPPER 70S.
WINDS.......................NORTHWEST WINDS 10 TO 15 MPH.
SWIM RISK OUTLOOK
SATURDAY NIGHT
LOW SWIM RISK*.
SUNDAY
LOW SWIM RISK*.
SUNDAY NIGHT
LOW SWIM RISK*.
MONDAY
LOW SWIM RISK*.
MONDAY NIGHT
LOW SWIM RISK*.
TUESDAY
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
ILZ103-104-222030-
NORTHERN COOK-CENTRAL COOK-
INCLUDING THE BEACHES OF CHICAGO PARK DISTRICT
316 PM CDT FRI AUG 21 2026
REST OF TODAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 2 FEET.
WATER TEMPERATURE...........71-75.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS.
HIGH TEMPERATURE............AROUND 80.
WINDS.......................SOUTH WINDS 10 TO 15 MPH.
TONIGHT
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WEATHER.....................MOSTLY CLOUDY. SHOWERS AND
THUNDERSTORMS LIKELY, MAINLY IN THE
EVENING.
LOW TEMPERATURE.............IN THE MID 60S.
WINDS.......................SOUTHWEST WINDS 5 TO 10 MPH, BECOMING
WEST LATE.
SATURDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................PARTLY CLOUDY. A SLIGHT CHANCE OF
THUNDERSTORMS WITH ISOLATED SHOWERS IN
THE AFTERNOON.
HIGH TEMPERATURE............IN THE UPPER 70S.
WINDS.......................NORTHWEST WINDS 10 TO 15 MPH.
SWIM RISK OUTLOOK
SATURDAY NIGHT
MODERATE SWIM RISK*.
SUNDAY
MODERATE SWIM RISK*.
SUNDAY NIGHT
LOW SWIM RISK*.
MONDAY
LOW SWIM RISK*.
MONDAY NIGHT
LOW SWIM RISK*.
TUESDAY
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
INZ001-222030-
LAKE-
INCLUDING THE BEACHES OF INDIANA DUNES NATIONAL PARK
316 PM CDT FRI AUG 21 2026
REST OF TODAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................AROUND 1 FOOT.
WATER TEMPERATURE...........72-76.
WEATHER.....................PARTLY CLOUDY. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
HIGH TEMPERATURE............AROUND 80.
WINDS.......................SOUTH WINDS AROUND 10 MPH.
TONIGHT
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING,
THEN SHOWERS AND THUNDERSTORMS LIKELY
LATE IN THE EVENING. A CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT.
LOW TEMPERATURE.............IN THE UPPER 60S.
WINDS.......................SOUTHWEST WINDS 5 TO 10 MPH, BECOMING
WEST LATE.
SATURDAY
SWIM RISK*..................MODERATE.
WAVE HEIGHT.................2 TO 4 FEET.
WEATHER.....................PARTLY CLOUDY, THEN BECOMING MOSTLY
SUNNY. A SLIGHT CHANCE OF THUNDERSTORMS
WITH ISOLATED SHOWERS IN THE AFTERNOON.
HIGH TEMPERATURE............IN THE UPPER 70S.
WINDS.......................NORTHWEST WINDS 10 TO 15 MPH, BECOMING
NORTH LATE.
SWIM RISK OUTLOOK
SATURDAY NIGHT
MODERATE SWIM RISK*.
SUNDAY
HIGH SWIM RISK*.
SUNDAY NIGHT
HIGH SWIM RISK*.
MONDAY
LOW SWIM RISK*.
MONDAY NIGHT
LOW SWIM RISK*.
TUESDAY
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
INZ002-222030-
PORTER-
INCLUDING THE BEACHES OF INDIANA DUNES NATIONAL PARK
316 PM CDT FRI AUG 21 2026
...BEACH HAZARDS STATEMENT IN EFFECT FROM SATURDAY MORNING THROUGH
SUNDAY EVENING...
REST OF TODAY
SWIM RISK*..................LOW.
WAVE HEIGHT.................AROUND 1 FOOT.
WATER TEMPERATURE...........72-76.
WEATHER.....................PARTLY CLOUDY. A SLIGHT CHANCE OF
SHOWERS AND THUNDERSTORMS.
HIGH TEMPERATURE............IN THE UPPER 70S.
WINDS.......................SOUTH WINDS AROUND 10 MPH.
TONIGHT
SWIM RISK*..................LOW.
WAVE HEIGHT.................1 TO 3 FEET.
WEATHER.....................MOSTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS EARLY IN THE EVENING,
THEN SHOWERS AND THUNDERSTORMS LIKELY
LATE IN THE EVENING. A CHANCE OF
SHOWERS AND THUNDERSTORMS AFTER
MIDNIGHT.
LOW TEMPERATURE.............IN THE UPPER 60S.
WINDS.......................SOUTHWEST WINDS 5 TO 10 MPH, BECOMING
WEST LATE.
SATURDAY
SWIM RISK*..................HIGH.
WAVE HEIGHT.................3 TO 5 FEET.
WEATHER.....................MOSTLY CLOUDY, THEN BECOMING MOSTLY
SUNNY. A SLIGHT CHANCE OF THUNDERSTORMS
WITH ISOLATED SHOWERS IN THE AFTERNOON.
HIGH TEMPERATURE............IN THE MID 70S.
WINDS.......................NORTHWEST WINDS 10 TO 15 MPH WITH GUSTS
UP TO 25 MPH.
SWIM RISK OUTLOOK
SATURDAY NIGHT
HIGH SWIM RISK*.
SUNDAY
HIGH SWIM RISK*.
SUNDAY NIGHT
HIGH SWIM RISK*.
MONDAY
LOW SWIM RISK*.
MONDAY NIGHT
LOW SWIM RISK*.
TUESDAY
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
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