Hey there, sun-seekers and ocean lovers! So, you’re considering visiting the beautiful Oahu island in August? Let us be the first to say: excellent choice! Hawaii in August is a magical time across the Hawaiian Islands, and Oahu, the “Heart of Hawaii,” is buzzing with a special kind of aloha spirit during this sun-drenched month. Whether snorkeling with sea turtles, hiking lush trails, or lounging on world-famous beaches, Oahu in August offers the perfect blend of excitement and relaxation.
Let’s dive into everything you need to know to plan your unforgettable summer escape—plus a few must-do snorkeling tours to make your vacation even more epic!
☀️ Oahu Weather in August
The number one question visitors ask: What’s the Oahu weather in August like?
In a word: perfect.
August is part of Hawaii’s dry season, so you can expect mostly sunny skies and very little rain. Daytime temperatures usually hover between 85°F and 89°F (29°C to 32°C)—yes the high 80s—while nighttime temperatures dip to a comfortable 72°F to 75°F (22°C to 24°C). The ocean is at its warmest—around 80°F (27°C)—making it an ideal time for snorkeling, swimming, and all your favorite water activities.
There may be a little humidity, but the trade winds help keep things feeling fresh and breezy. Don’t forget your reef-safe sunscreen and a hat—those UV rays are no joke!
Rain? What’s that? Just kidding, we do get some “liquid sunshine” in the tropics, but August is one of the driest months. Any showers that do pop up are usually brief and refreshing, often leaving behind a stunning rainbow as a souvenir. The trade winds also do their part, keeping the humidity at bay and providing a gentle, cooling breeze.
And the ocean? Oh, the ocean in August is a dream. The water temperature is a balmy 80°F (around 27°C), making it the perfect temperature for all your aquatic adventures. It’s like swimming in a perfectly heated, giant, turquoise pool. You can leave your wetsuit at home for this trip!
Photo Courtesy of HiEstates
🌊 Why August is the Perfect Time for Your Oahu Getaway
August in Oahu is a vibe. The island is alive with energy and excitement. Here’s why we love August:
-
- Sunshine for Days: If you’re chasing the sun, August is your month. The long, sunny days mean more time for exploring, snorkeling, and soaking up that vitamin D.
- Festivals and Events: August is packed with fun events. There’s always something happening, from the famous Duke’s OceanFest, a week-long celebration of water sports (including longboard surfing and beach volleyball), to various Hawaii festivals.
- Calm North Shore Waters: While the North Shore is famous for its massive winter waves, the ocean is calm and inviting in August. This makes it the perfect time for snorkeling and swimming in this legendary spot.
Now, it’s true that August is part of the peak season, especially the first half of the month when many families are on summer vacation. But don’t let that deter you! The island is big enough for everyone, and with a little planning, you can still find your own slice of paradise. Plus, the second half of August tends to be a little less crowded as kids head back to school.
Your August Adventure Awaits: Fun in the Sun
Beyond the beautiful beaches and perfect weather, Oahu in August is brimming with things to do. Here are a few of our favorites:
-
- Duke’s OceanFest: If you’re in Waikiki in late August, you can’t miss this incredible event. It’s a celebration of all things ocean-related, with surfing competitions, paddleboard races, and more. It’s a fantastic way to experience the local surf culture.
- Explore the East Side: Take a drive along the stunning windward coast. Stop at lookout points for breathtaking views, discover hidden beaches, and enjoy the laid-back vibe of this side of the island.
- Hike to a Waterfall: With the lush greenery at its peak, a hike to a waterfall is a must. Manoa Falls is a popular choice, and the trail takes you through a beautiful rainforest.
- Indulge in Local Flavors: From shave ice to fresh poke bowls, Oahu is a foodie’s paradise. Be sure to visit a local farmers market to sample some of the island’s incredible produce and catch some live Hawaiian music while you’re there.
🐠 Why August is Great for Snorkeling in Oahu
Okay, let’s get to the really good stuff: snorkeling. If you love being in the water, Oahu in August is your paradise. Calm ocean conditions, excellent visibility, and warm waters create the perfect setting for marine adventures. Whether you’re a snorkeling newbie or an experienced ocean explorer, you’ll find plenty of underwater wonders waiting for you.
Pro Tip: Mornings are generally the best time to snorkel—the waters are calmer, and visibility is clearer.
Snorkeling Tours You Can’t Miss
We highly recommend booking a guided snorkeling tour to get the most out of your August getaway. You’ll not only get access to the best spots, but you’ll also enjoy expert guidance, safety briefings, and all the gear you need. And let’s be honest—nothing beats snorkeling with a fun crew that knows all the local secrets!
1. 3-Hour Afternoon Snorkel Tour & Sail
This three-hour adventure is a hit with families and couples alike! You’ll cruise along Oahu’s stunning North Shore, stopping to snorkel among colorful fish and coral reefs.
*Snorkel equipment is included. Keep your eyes peeled for sea turtles and dolphins!
2. Turtle Canyons Snorkel Excursion
If you’re looking to kick off your day with an unforgettable ocean adventure, this morning tour to Turtle Canyon is a must. This two-hour trip offers snorkeling at Turtle Canyon, known for its large number of sea turtles floating above the reef.
*Light snacks and snorkeling equipment are included
🏝️ Best Beaches to Visit in Oahu in August
With Oahu weather in August being so dreamy, beach hopping is an absolute must. Here are a few of our favorites:
Waikiki Beach
It’s iconic for a reason! The golden sands and calm waves are perfect for beginner snorkelers and swimmers. Plus, you’ll find plenty of restaurants, shops, and surfboard rentals just steps away.
Lanikai Beach
Famous for its powdery soft sand and turquoise waters, Lanikai is a picturesque spot on the windward side of Oahu. Bring a float, a snorkel mask, and your camera—this place is Instagram gold.
Shark’s Cove
Don’t worry—the name is scarier than the experience! Shark’s Cove on Oahu’s North Shore is a volcanic rock bay filled with tide pools and marine life. It’s a fantastic spot for more experienced snorkelers.
Hanauma Bay
One of Oahu’s most popular snorkeling destinations. You’ll need a reservation and should arrive early, but the calm lagoon is filled with vibrant reef fish and protected coral. It’s like swimming in an aquarium!
🧳 What to Pack for Oahu in August
Here’s a quick checklist to help you pack smart for your trip:
-
- Lightweight clothing (think shorts, tanks, and sundresses)
- Swimsuits (bring at least two!)
- Reef-safe sunscreen
- Sunglasses and sunhat
- Reusable water bottle
- Snorkeling gear (or use ours on tour!)
- Water shoes or flip-flops
- Light rain jacket (just in case!)
- A waterproof phone case or GoPro
Snorkel Oahu
Ready to explore Oahu’s underwater paradise? Book your Snorkel Oahu adventure today and swim with sea turtles, tropical fish, and more!
🐢 Your August Adventure Awaits!
So, what are you waiting for? Oahu in August is the perfect time to visit! With its perfect weather, stunning scenery, and endless opportunities for adventure, it’s the perfect place to visit Hawaii and create memories that will last a lifetime.
Here at Oahu Snorkeling, we’re ready to help you make the most of your trip. Whether you want to swim with turtles, watch dolphins dance in the waves, or simply explore the incredible underwater world of Oahu, we have a tour for you.
So, come on in, the water’s fine! We can’t wait to see you in paradise.
Aloha! 🌸
