What U.S. cities offer the perfect weather for August? Well, it turns out there are several, and they are varied enough to offer something for everyone. The United States offers a wide array of weather patterns (some even within the same place), so if you want to beat the heat and cool off in a breezy summer vacation spot this August, the perfect destination may be closer than you think!
Before we jump in, let's consider what "perfect weather" entails. The human body is designed to operate optimally at around 70 degrees Fahrenheit. We feel most comfortable at this temperature and will not be reaching for a blanket or desperately trying to cool off. In addition, most people prefer low humidity and some sunshine on a daily basis.
With those qualities in mind, let's take a look at which cities offer a much-needed summer reprieve from the heat while also providing pleasant surroundings throughout the month of August.
San Francisco, California

While many California beach towns are going to be sweltering during the late summer, that's not the case in San Francisco. The average historical highs for the city hover between the mid-60s and low-70s throughout the month of August, and the lows are a nice, gentle 55 degrees. Visitors can also expect plenty of days of sunshine, making the city an excellent place to spend your August vacation.
San Francisco offers tourists the chance to see some iconic landmarks like the Golden Gate Bridge or Alcatraz Island, and — even though it won't be sweltering outside — it is still summer, so stopping by the original Ghirardelli Ice Cream and Chocolate Shop is a good choice, too.
Denver, Colorado

If you'd rather head for the mountains than the beach, Denver has lots to offer August vacationers. While the average highs are a little above the preferred range (sitting at around 90 degrees), the average lows are a lovely 55–59 degrees. In addition, it's important to note that Denver has very little humidity. You may need to stock up on the ChapStick, but you'll be able to comfortably spend hours in the sunny outdoors.
Elitch Garden offers a seasonal water park that is at its peak in August. The Museum of Nature and Science and the Downtown Aquarium also offer some fun (and educational) opportunities for families. Overall, Denver has plenty of summery activities to keep the spirit of the season alive — without baking visitors in the heat.
Milwaukee, Wisconsin

With average highs in the high 70s and lows in the mid-60s, Milwaukee offers a lovely reprieve from the sweltering summer heat. It also has a lot to offer as a destination with family-friendly attractions like the Horticultural Exhibit, County Zoo, and Art Museum. The area is also well-known for its breweries and proximity to Lake Michigan. Visitors may also learn a little more about the fascinating history of the Great Lakes while they're there.
Whether visitors are looking to spend some time outdoors, soak in some culture, or simply sit back and relax with a nice, cold beer, Milwaukee has a lot to offer. It's an excellent destination for families, couples, or friends wanting to get together and have a true summer break on the lake.
Seattle, Washington

The Pacific Northwest may be known for its gloomy drizzle most of the year, but summers in the area offer an amazing break from the temperature spikes gripping much of the rest of the country. Seattle, with average highs in the mid-70s and lows in the 50s and 60s, offers a perfect August getaway. Visitors will be thrilled with a trip to the historic Pike Place Market or with a visit to the breathtaking display of the Chihuly Garden and Glass.
Seattle also might be one of the coolest vacation spots around, offering both the Space Needle and the Museum of Pop Culture. However, it should be noted that it is not, as many people mistakenly believe, the state capital (that title goes to much-smaller Olympia).
Portland, Oregon

Portland is another Pacific Northwest destination that promises a great summer experience with ideal weather. With a historical average high around 80 and lows in the mid-50s, Portland offers comfortable August days and cool nights. That gorgeous weather is a perfect excuse to get outdoors and see some of the great attractions Portland has to offer including the International Rose Test Garden and Portland Japanese Garden.
More adventurous and outdoorsy types will find the hiking trails at the Hoyt Arboretum or through Forest Park excellent ways to get up close and personal with the beautiful towering trees of the Pacific Northwest.