Weather in Lake Michigan, Chicago, United States in September

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Visiting Lake Michigan, Chicago, United States in September

September is one of the best months to visit Lake Michigan for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.

September has average maximum temperatures of 24°C (76°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.5hrs making the days long and bright. September has total rainfall of 6.6cm (2.6inches) making it mostly dry with only intermittent light showers. There are only 10.2 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a cold 16°C (61°F). September is too cold for swimming in Lake Michigan for any length of time, unless you have a wetsuit.

Also consider visiting Lake Michigan in one of the other best months of June, July, August, for the best beach weather.

In September, the weather at the Lake Michigan beach in Chicago begins to cool down, but it remains a pleasant time for swimming, sunbathing, and beach activities. The water temperature is still comfortable for snorkeling, diving, windsurfing, and kitesurfing, making it a popular month for water sports enthusiasts. Also consider one of our other suggestions for September.

Can you sunbathe in Lake Michigan in September?

Yes, September is a good time for sunbathing in Lake Michigan.

September has average maximum temperatures of 24°C (76°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.5hrs making the days long and bright. September has total rainfall of 6.6cm (2.6inches) making it mostly dry with only intermittent light showers. There are only 10.2 days with some rainfall so you can still enjoy the beach on the majority of days.

More about September temperature and sunshine.

Can you swim in Lake Michigan in September?

No, September is too cold for swimming in Lake Michigan for any length of time, with the sea water at 16°C (61°F), unless you have a wetsuit.

More about September sea temperatures.

Is September a good time to holiday in Lake Michigan?

Yes, September is a good time for a holiday in Lake Michigan.

September has average maximum temperatures of 24°C (76°F) which is nice and warm and makes sunbathing pleasant on clear days. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.5hrs making the days long and bright. September has total rainfall of 6.6cm (2.6inches) making it mostly dry with only intermittent light showers. There are only 10.2 days with some rainfall so you can still enjoy the beach on the majority of days. Sea temperatures are a cold 16°C (61°F). September is too cold for swimming in Lake Michigan for any length of time, unless you have a wetsuit.

More about the September temperatures and sunshine.

Is Lake Michigan warm in September?

Yes, Lake Michigan is nice and warm and makes sunbathing pleasant on clear days in September.

The average maximum temperature in Lake Michigan in September is 24°C (76°F). The average maximum temperature is 28°C (82°) in the previous month and 17°C (63°F) in the next month.

The average temperature in Lake Michigan in September is 20°C (67°F). The average temperature is 23°C (74°F) in the previous month and 13°C (55°F) in the next month.

More info about the September temperatures and sunshine.

How sunny is Lake Michigan in September?

The average day light hours per day in Lake Michigan in September are 12.5. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.5hrs making the days long and bright.

More about September sunshine.

Crowds in Lake Michigan in September

In September, the beach crowds start to decrease as the weather gets cooler and schools are back in session. Labor Day weekend can still be busy, but after that, the beach becomes less crowded.

Temperature in Lake Michigan in September

The average maximum temperature in Lake Michigan in September is 24°C (76°F). The average maximum temperature is 28°C (82°F) in the previous month and 17°C (63°F) in the next month.

The average temperature in Lake Michigan in September is 20°C (67°F). The average temperature is 23°C (74°F) in the previous month and 13°C (55°F) in the next month.

The average minimum temperature in Lake Michigan in September is 15°C (59°F). The minimum temperature is 19°C (67°F) in the previous month and 8°C (47°F) in the next month.

Sunshine in Lake Michigan in September

During September the average day light hours are 12.5 per day in Lake Michigan. The sunshine percentage is 68% making it sunny but overcast at times. The hours of sunshine per day are 8.5hrs making the days long and bright.

The ultraviolet index in Lake Michigan in September is typically 6.5 during September. An ultraviolet index reading of 6 to 7 indicates a high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 20 minutes. Protection against skin and eye damage is needed. Tanning will be safest before 10am and after 4pm. For those with sensitive skin stay in the shade and wear protective clothing, a wide-brimmed hat, and UV-blocking sunglasses. Generously apply broad spectrum SPF 30+ sunscreen every 2 hours, even on cloudy days. Watch out for relections from water that may increase ultraviolet exposure.

Sea Temperature in Lake Michigan in September

The average sea water temperature in Lake Michigan in September is 16°C (60.8°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water.

Rainfall in Lake Michigan in September

The average total rainfall in Lake Michigan in September is 6.6cm (2.6inches) and on average there are 10.2 rainy days in September making it a pretty wet time to visit the beach.

Humidity in Lake Michigan in September

The maximum dew point (an indicator of humidity) in Lake Michigan in September is 15°C (59°F) which is comfortable for everyone. The dew point is 19°C (65°F) in the previous month and 9°C (9°F) in the next month.

The average maximum relative humidity in Lake Michigan in September is typically 84.1%. The maximum relative humidity is 84% in the previous month and 83.4% in the next month.

The average relative humidity in Lake Michigan in September is typically 64.8%. The average relative humidity is 65.2% in the previous month and 65.2% in the next month.

Wind Speed in Lake Michigan in September

The average maximum wind speed in Lake Michigan in September is typically 25KM/H (16MPH). The average maximum wind speed is 26KM/H (16MPH) in the previous month and 28KM/H (17MPH) in the next month.

The average wind speed in Lake Michigan in September is typically 13KM/H (8MPH). The average wind speed is 12KM/H (7MPH) in the previous month and 15KM/H (9MPH) in the next month.

The average wind direction in Lake Michigan in September is from the South-Southwest.

Monthly Averages

Suggested Beaches in September

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Need Inspiration?

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