What Is Key West’s Weather In August?

Sizzling in the Sun: Key West Weather in August


August in Key West, Florida, marks the peak of summer, bringing with it sweltering heat, endless sunshine, and a plethora of outdoor activities. As the temperature rises and the sun blazes, Key West becomes a vibrant tropical playground for those seeking the quintessential summer experience. In this article, we delve into the weather in Key West during August, guiding you through the joys of a sunny and lively summer vacation in this island paradise.

Temperature in August

August in Key West is synonymous with scorching heat. The average high temperature during the day typically ranges from 90°F to 92°F (32°C to 34°C), while the nighttime lows rarely dip below 80°F (27°C). These hot and sultry temperatures are perfect for beach days, water sports, and enjoying the outdoor offerings Key West has to offer.

Precipitation and Rainfall

August is one of the wettest months in Key West. The island receives an average of around 5 inches (127 mm) of precipitation throughout the month. While it is a rainier period, showers are typically brief, and the island enjoys a fair share of sunny intervals.

Sunshine and Daylight

August in Key West is synonymous with abundant sunshine, boasting approximately 8 hours of daily sunlight. The extended daylight period ensures ample time for visitors to indulge in the island’s natural beauty, historical sites, and a plethora of outdoor activities.

Humidity and Wind

Relative humidity levels in Key West during August are higher, often exceeding 75%. The combination of heat and humidity can be intense, but the island still enjoys refreshing sea breezes. These breezes create a pleasant environment for water activities like sailing, snorkeling, and beachfront strolls.

Water Temperature

The waters around Key West remain exceptionally warm in August, with an average water temperature of around 88°F (31°C). This balmy water temperature is perfect for swimming, snorkeling, and underwater adventures, providing an ideal setting to explore the region’s vibrant marine life and coral reefs.

Activities and Events

August in Key West offers a wide range of activities and events, ensuring there’s something for everyone. Here are some recommendations:

  1. Beach Bliss: Despite the heat, Key West’s beaches, including Fort Zachary Taylor State Park Beach and Smathers Beach, are perfect for sunbathing and swimming.
  2. Water Adventures: Engage in water activities like snorkeling, diving, kayaking, paddleboarding, and jet skiing in the warm, clear waters.
  3. Historical Exploration: Discover the island’s history at attractions like the Ernest Hemingway Home and Museum and the Key West Butterfly and Nature Conservatory.
  4. Fishing: Enjoy prime fishing opportunities to catch species like tarpon, mahi-mahi, and wahoo.
  5. Festivals and Events: Celebrate cultural events such as the Key West Brewfest and the Key West Lobsterfest.


August in Key West offers a tropical paradise with sizzling temperatures, an abundance of sunshine, and a wide array of water-based and cultural experiences. Whether you’re seeking a sunny summer vacation, underwater adventures, or historical exploration, the weather in Key West during August provides the perfect backdrop for a memorable summer getaway. Immerse yourself in the island’s natural beauty and vibrant culture during this hot and lively month, and create cherished memories in this tropical haven.

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