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4°
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August is one of the best months to visit Illinois for the best beach weather. It has the most sunshine and best sunbathing and swimming conditions of the year.
The weather in August is marginally cooler than the previous month and temperatures continue to drop into September. August has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.0hrs making the days long and bright.
August has total rainfall of 11.5cm (4.5inches) making it often dry with only moderate showers. There are only 11 days with some rainfall so you can still enjoy the beach on the many clear days.
Sea temperatures are a cool 20°C (68°F). August is a slightly chilly month for swimming in Illinois. The sea temperature in August is warmer than the previous month.
Also consider visiting Illinois in one of the other best months of June, July, September, for the best beach weather. Also consider one of our other suggestions for August.
Yes, August is a good time for sunbathing in Illinois.
August has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.0hrs making the days long and bright. August has total rainfall of 11.5cm (4.5inches) making it often dry with only moderate showers. There are only 11 days with some rainfall so you can still enjoy the beach on the many clear days.
More about August temperature and sunshine.
Yes, August is a a slightly chilly month for swimming in Illinois with cool sea temperatures 20°C (68°F).
More about August sea temperatures.
Yes, August is a good time for a holiday in Illinois.
August has average maximum temperatures of 28°C (82°F) which is very warm and perfect for sunbathing on clear days. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.0hrs making the days long and bright. August has total rainfall of 11.5cm (4.5inches) making it often dry with only moderate showers. There are only 11 days with some rainfall so you can still enjoy the beach on the many clear days. Sea temperatures are a cool 20°C (68°F). August is a slightly chilly month for swimming in Illinois.
More about the August temperatures and sunshine.
Yes, Illinois is very warm and perfect for sunbathing on clear days in August.
The average maximum temperature in Illinois in August is 28°C (82°F). The average maximum temperature is 29°C (85°) in the previous month and 24°C (76°F) in the next month.
The average temperature in Illinois in August is 23°C (74°F). The average temperature is 24°C (76°F) in the previous month and 20°C (67°F) in the next month.
More info about the August temperatures and sunshine.
The average day light hours per day in Illinois in August are 13.9. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.0hrs making the days long and bright.
More about August sunshine.
The weather in August is marginally cooler than the previous month and temperatures continue to drop into September. The average maximum temperature in Illinois in August is 28°C (82°F). The average maximum temperature is 29°C (85°F) in the previous month and 24°C (76°F) in the next month.
The average temperature in Illinois in August is 23°C (74°F). The average temperature is 24°C (76°F) in the previous month and 20°C (67°F) in the next month.
The average minimum temperature in Illinois in August is 19°C (67°F). The minimum temperature is 20°C (68°F) in the previous month and 15°C (59°F) in the next month.
The days in August are slightly shorter than the previous month and days continue to get shorter into September. August has fewer hours of sunshine than the previous month and hours of sunshine continue to drop quickly into September. During August the average day light hours are 13.9 per day in Illinois. The sunshine percentage is 72% making it sunny and pleasant most of the time. The hours of sunshine per day are 10.0hrs making the days long and bright.
The ultraviolet index in Illinois in August is typically 8.7 during August. An ultraviolet index reading of 8 to 10 indicates a very high risk of harm from unprotected sun exposure. Unprotected skin risks burning in less than 15 minutes. Take extra precautions because unprotected skin and eyes will be damaged and can burn quickly. Tanning will be safest before 10am and after 4pm but only with a good application of sun screen. 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.
The average sea water temperature in Illinois in August is 20°C (68°F) which is comfortable for swimming though some may prefer warmer water. The sea temperature in August is warmer than the previous month.
August weather is slightly wetter than the previous month. August has a couple of less days of rain than the previous month and rainy days continue to drop slightly into September. The average total rainfall in Illinois in August is 11.5cm (4.5inches) and on average there are 11 rainy days in August making it a pretty wet time to visit the beach.
The maximum dew point (an indicator of humidity) in Illinois in August is 19°C (65°F) which is somewhat uncomfortable for most people in cities but fine on a beach. The dew point is 19°C (66°F) in the previous month and 15°C (15°F) in the next month.
The average maximum relative humidity in Illinois in August is typically 84%. The maximum relative humidity is 82.3% in the previous month and 84.1% in the next month.
The average relative humidity in Illinois in August is typically 65.2%. The average relative humidity is 62.2% in the previous month and 64.8% in the next month.
The average maximum wind speed in Illinois in August is typically 26KM/H (16MPH). The average maximum wind speed is 28KM/H (17MPH) in the previous month and 25KM/H (16MPH) in the next month.
The average wind speed in Illinois in August is typically 12KM/H (7MPH). The average wind speed is 13KM/H (8MPH) in the previous month and 13KM/H (8MPH) in the next month.
The average wind direction in Illinois in August is from the South-Southwest.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
Beaches recommended for you today, this weekend, in the next 2 weeks or in any month of the year.
