Weather in Chicago, United States in September

Search

Best
Best
Best
Best
Tan
Tan
Tan
Tan
Tan
Sea
 
Sea
 
Sea
 
Sea
 
Sea
 
Sea
10°
 
Sea
17°
 
Sea
20°
Swim
Sea
16°
 
Sea
13°
 
Sea
 
Sea
 

Visiting Chicago, United States in September

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

The weather in September is cooler than the previous month and temperatures continue to drop markedly into October. 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 Chicago for any length of time, unless you have a wetsuit. The sea temperature in September is cooler than the previous month and temperatures continue to drop into October.

Also consider visiting Chicago in one of the other best months of June, July, August, for the best beach weather. Also consider one of our other suggestions for September.

Can you sunbathe in Chicago in September?

Yes, September is a good time for sunbathing in Chicago.

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 Chicago in September?

No, September is too cold for swimming in Chicago 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 Chicago?

Yes, September is a good time for a holiday in Chicago.

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 Chicago for any length of time, unless you have a wetsuit.

More about the September temperatures and sunshine.

Is Chicago warm in September?

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

The average maximum temperature in Chicago 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 Chicago 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 Chicago in September?

The average day light hours per day in Chicago 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.

Temperature in Chicago in September

The weather in September is cooler than the previous month and temperatures continue to drop markedly into October. The average maximum temperature in Chicago 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 Chicago 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 Chicago 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 Chicago in September

The days in September are shorter than the previous month and days continue to get shorter into October. September has far fewer hours of sunshine than the previous month and hours of sunshine continue to drop quickly into October. During September the average day light hours are 12.5 per day in Chicago. 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 Chicago 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 Chicago in September

The average sea water temperature in Chicago in September is 16°C (60.8°F) which is cool for swimming, shorty wetsuit may help you extend your time in the water. The sea temperature in September is cooler than the previous month and temperatures continue to drop into October.

Rainfall in Chicago in September

September weather is slightly drier than the previous month. September has fewer days of rain than the previous month. The average total rainfall in Chicago 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 Chicago in September

The maximum dew point (an indicator of humidity) in Chicago 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 Chicago 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 Chicago 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 Chicago in September

The average maximum wind speed in Chicago 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 Chicago 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 Chicago in September is from the South-Southwest.

Monthly Averages

Suggested Beaches in September

Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.

Booking.com Search FlightsImage

Need Inspiration?

Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.