If you're planning a Key West vacation in August, you're in for warm turquoise water, incredible boating, fewer crowds than winter, amazing sunsets, and some of the best days you'll spend on the water. Whether you're visiting for a weekend or a full week, August is the perfect time to experience Key West like a local.

At Experience Key West, my goal is to help you plan the best vacation possible with honest local recommendations, personalized trip planning, and the best boat tours, restaurants, hotels, and hidden gems around the island.

Why Visit Key West in August?

August is one of the best months to enjoy everything the Florida Keys have to offer. While it's hot, it's also when the water is at its warmest and boating season is in full swing.

You'll enjoy:

• Crystal-clear turquoise water
• Warm ocean temperatures (around 86°F)
• Incredible sandbar days
• Excellent snorkeling
• Beautiful sunsets
• Smaller crowds than peak season
• Easier restaurant reservations
• More availability for private and shared boat charters

If you ask a local, they'll probably tell you the same thing:

Get out on the water!

Key West Weather in August

Average High: 91°F

Average Low: 81°F

Water Temperature: Around 86°F

Afternoon rain showers are common during the summer, but they usually move through quickly and are often followed by sunshine. It's part of living and vacationing in the tropics.

Best Things to Do in Key West During August

Spend the Day on the Water

One of the biggest misconceptions about Key West is that it's all about the beaches. While we do have beaches, Key West is truly a boating destination.

Summer is when locals spend their days:

• Visiting sandbars
• Snorkeling the reef
• Dolphin watching
• Paddleboarding
• Kayaking
• Fishing
• Watching the sunset from the water
• Exploring the backcountry

If you're only planning to walk Duval Street, you're missing one of the best parts of the Florida Keys.

Visit a Sandbar

No summer trip to Key West is complete without spending time at one of our beautiful sandbars.

Depending on the tides and weather, you'll enjoy:

• Shallow crystal-clear water
• Floating with friends and family
• Paddleboarding
• Snorkeling
• Relaxing on the boat
• Meeting other boaters

Looking for the best way to experience a sandbar?

Read: Private Sandbar Charter vs. Large Sandbar Tours in Key West

Go Snorkeling

The Florida Keys are home to the only living coral barrier reef in the continental United States.

August offers warm water and excellent snorkeling opportunities around the reef, where you may see:

• Tropical fish
• Coral formations
• Sea turtles
• Rays
• Colorful marine life

Whether you join a private charter or a group excursion, snorkeling is one of the most popular activities in Key West.

Visit Dry Tortugas National Park

If you're looking for an unforgettable day trip, consider visiting Dry Tortugas National Park.

Located about 70 miles west of Key West, the park is famous for:

• Fort Jefferson
• Crystal-clear water
• Incredible snorkeling
• Bird watching
• History
• Remote island beauty

Explore Historic Old Town

When you're back on land, spend time exploring:

• Duval Street
• Mallory Square
• Historic Seaport
• Southernmost Point Buoy
• Truman Waterfront Park
• Bahama Village
• Whitehead Street

You'll discover local restaurants, art galleries, shopping, live music, and plenty of places to slow down and enjoy island life.

August Events in Key West (2026)

Florida Spiny Lobster Season Opens — August 6

One of the biggest events each August is the opening of Florida's regular spiny lobster season, which officially begins August 6 and runs through March 31.

If you've ever wanted to catch your own dinner, this is a great time to book a private lobster charter. Local captains provide the boat, equipment, and guidance while helping you stay within Florida's regulations.

Before heading out on your own, make sure you have:

• A valid Florida fishing license
• A lobster gauge
• A dive flag
• A net and tickle stick
• An understanding of current lobster regulations

Helpful Resources:

• Florida Lobster Regulations: https://myfwc.com/fishing/saltwater/recreational/lobster/
• Florida Fishing License: https://gooutdoorsflorida.com/

Read our complete guide: Florida Keys Lobstering Guide: Tips, Rules & Everything You Need to Know

Key West BrewFest

August 27–31, 2026

Beer lovers won't want to miss Key West BrewFest. The weekend features craft beer tastings, brewery events, dinners, seminars, and plenty of opportunities to sample beers from around the country.

Jimmy Buffett Day — August 30

Celebrate Key West's legendary singer-songwriter with live music, island celebrations, and special events honoring the laid-back lifestyle he made famous around the world.

Sunset Celebration

Every evening, head to Mallory Square to experience Key West's famous Sunset Celebration featuring:

• Street performers
• Local artists
• Food vendors
• Live music
• One of the most beautiful sunsets in Florida

It's one of those experiences every visitor should enjoy at least once.

What About Sargassum?

Summer also brings the possibility of seasonal sargassum seaweed, especially along some Atlantic-facing beaches.

The good news?

This doesn't ruin your vacation.

Many visitors simply head offshore to the sandbars, reef, or backcountry, where the water is often beautiful and clear.

Read: Sargassum Season in Key West: What Visitors Need to Know

Is August a Good Time to Visit Key West?

Absolutely.

If you're looking for:

• Warm water
• Incredible boating
• Fewer crowds
• Beautiful sunsets
• Great fishing
• Sandbar days
• Snorkeling adventures
• Tropical island vibes

August is one of the best times to experience Key West like a local.

Let Experience Key West Help You Plan the Perfect Vacation

There are countless travel blogs written by people who visit Key West for a few days. Experience Key West is different, this is home.

I grew up here, live here, and spend my days helping visitors experience the very best of Key West. Whether you're looking for a private charter, a shared sandbar trip, snorkeling, fishing, a Dry Tortugas adventure, a sunset cruise, hotel recommendations, or local restaurant suggestions, I can help you plan a vacation that fits your style.

Explore more local guides:

• Private Sandbar Charter vs. Large Sandbar Tours in Key West
• Sargassum Season in Key West: What Visitors Need to Know
• Where to Stay in Key West During Summer
• Florida Keys Lobstering Guide: Tips, Rules & Everything You Need to Know

Planning an August trip to Key West? Let me help you skip the tourist traps and discover the island like a local. From private and shared boat charters to snorkeling, fishing, Dry Tortugas adventures, sunset cruises, hotel recommendations, and personalized vacation planning, I'm here to help you make the most of your time at the end of the road.

I can't wait to help you experience the best of Key West, Florida!