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Top things to do in Big Island of Hawaii in Summer (Updated September 2026)

Big Island of Hawaii, USA
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Big Island of Hawaii Activities

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Captain Cook Reef Snorkeling of Kealakekua Bay

Set out from Kailua-Kona for a half-day snorkeling activity to Kealakekua Bay/Captain Cook, one of the top snorkeling destinations on the Big Island. Look for …More

Likely to Sell Out
Likely to Sell Out
4.9 (164)

Captain Cook Reef Snorkeling of Kealakekua Bay

Set out from Kailua-Kona for a half-day snorkeling activity to Kealakekua Bay/Captain Cook, one of the top snorkeling destinations on the Big Island. Look for...

4 hours • Free Cancellation
4.9 (164)
from
$80
Glow of the Deep: Night Snorkeling with Manta Rays

Ensure a manta ray sighting on this 2.5-hour night tour. Head out in Kona, one of the best places in the world to see mantas, to …More

4.7 (1,241)

Glow of the Deep: Night Snorkeling with Manta Rays

Ensure a manta ray sighting on this 2.5-hour night tour. Head out in Kona, one of the best places in the world to see mantas, to...

2 hours 30 minutes • Free Cancellation
4.7 (1,241)
from
$80
Big Island: Captain Cook Snorkel On A Power Catamaran With Lunch

Cruise coastline, admire marine life, such as fish, dolphins, whales (seasonal), or other ocean creatures we might see on the tour. Explore sea caves and …More

Likely to Sell Out
Likely to Sell Out
4.9 (2,469)

Big Island: Captain Cook Snorkel On A Power Catamaran With Lunch

Cruise coastline, admire marine life, such as fish, dolphins, whales (seasonal), or other ocean creatures we might see on the tour. Explore sea caves and...

4 hours • Free Cancellation
4.9 (2,469)
from
$85
2 Hour Big Island Reef Snorkel & Dolphin Watch Tour

Embark on an unforgettable 2-hour afternoon adventure along Kona's beautiful West Coast aboard KIBOU, our custom-built speedboat designed for exploring Hawaii's incredible coastline. This tour …More

5.0 (19)

2 Hour Big Island Reef Snorkel & Dolphin Watch Tour

Embark on an unforgettable 2-hour afternoon adventure along Kona's beautiful West Coast aboard KIBOU, our custom-built speedboat designed for exploring Hawaii's incredible coastline. This tour...

2 hours • Free Cancellation
5.0 (19)
from
$88
Big Island Manta Ray Night Snorkel

A must do while in Hawaii! It's a lifetime opportunity to see up close manta rays feeding and interacting with other ocean creatures under the …More

Likely to Sell Out
Likely to Sell Out
4.9 (6,161)

Big Island Manta Ray Night Snorkel

A must do while in Hawaii! It's a lifetime opportunity to see up close manta rays feeding and interacting with other ocean creatures under the...

2 hours 30 minutes • Free Cancellation
4.9 (6,161)
from
$94
Dolphin, Sea Cave, Captain Cook, Kealakekua Bay Reef Snorkeling

2 different Snorkel Locations! Snorkel Adventure – Captain Cook Monument / Kealakekua Bay Fast, agile Zodiac navy boat (used by Navy SEALs) gets you to …More

Likely to Sell Out
Likely to Sell Out
4.7 (70)

Dolphin, Sea Cave, Captain Cook, Kealakekua Bay Reef Snorkeling

2 different Snorkel Locations! Snorkel Adventure – Captain Cook Monument / Kealakekua Bay Fast, agile Zodiac navy boat (used by Navy SEALs) gets you to...

3 hours • Free Cancellation
4.7 (70)
from
$99
Dolphin, Sea Cave & Captain Cook Snorkel Combo in Kealakekua Bay

Snorkel Adventure – Captain Cook Monument / Kealakekua Bay 2 different Snorkel Locations! Snorkel the vibrant coral reefs at Kealakekua Bay, home of the Captain …More

Likely to Sell Out
Likely to Sell Out
4.8 (275)

Dolphin, Sea Cave & Captain Cook Snorkel Combo in Kealakekua Bay

Snorkel Adventure – Captain Cook Monument / Kealakekua Bay 2 different Snorkel Locations! Snorkel the vibrant coral reefs at Kealakekua Bay, home of the Captain...

3 hours • Free Cancellation
4.8 (275)
from
$99
3.5 Hour Kailua-Kona Ocean Kayak and Snorkel Tour

Enjoy an aquatic adventure on the Big Island during this 4-hour small-group excursion combining sea kayaking, snorkeling, and more. Paddle along a section of the …More

4.9 (389)

3.5 Hour Kailua-Kona Ocean Kayak and Snorkel Tour

Enjoy an aquatic adventure on the Big Island during this 4-hour small-group excursion combining sea kayaking, snorkeling, and more. Paddle along a section of the...

4 hours
4.9 (389)
from
$99
Pool Scuba Refresher

Before diving in the ocean, join us for a short refresher to enhance your safety and enjoyment. We are the only dive shop on the …More

5.0 (1)

Pool Scuba Refresher

Before diving in the ocean, join us for a short refresher to enhance your safety and enjoyment. We are the only dive shop on the...

2 hours • Free Cancellation
5.0 (1)
from
$105
Small-Group Snorkel at Kealakekua Bay in Captain Cook, Big Island

We cruise from Keauhou harbor out into crystal clear blue waters. While the boat is underway, the crew will point out interesting features along the …More

4.9 (514)

Small-Group Snorkel at Kealakekua Bay in Captain Cook, Big Island

We cruise from Keauhou harbor out into crystal clear blue waters. While the boat is underway, the crew will point out interesting features along the...

3 hours • Free Cancellation
4.9 (514)
from
$109
Captain Cook Snorkel Tour in The Pristine Water at Kealakekua Bay

We carry a maximum of 14 passengers so we can offer a more intimate snorkel experience than the larger "cattle boats" in Kona. In addition …More

4.9 (116)

Captain Cook Snorkel Tour in The Pristine Water at Kealakekua Bay

We carry a maximum of 14 passengers so we can offer a more intimate snorkel experience than the larger "cattle boats" in Kona. In addition...

4 hours • Free Cancellation
4.9 (116)
from
$109
Sunset Manta Ray Tour in Kailua-Kona

Experience an unforgettable sunset manta ray snorkel tour, consistently ranked among the top lifetime adventures in Hawaiʻi. We specialize in small-group tours, limiting each experience …More

Likely to Sell Out
Likely to Sell Out
5.0 (252)

Sunset Manta Ray Tour in Kailua-Kona

Experience an unforgettable sunset manta ray snorkel tour, consistently ranked among the top lifetime adventures in Hawaiʻi. We specialize in small-group tours, limiting each experience...

2 to 3 hours • Free Cancellation
5.0 (252)
from
$109
Two Reef Snorkel Trip-See Captain Cook Monument & Sea Caves

Join us to see the underwater beauty near Captain Cook's Monument and Puuhonua O Honaunau National Historic Park. Usually, at this time of day, the …More

4.9 (367)

Two Reef Snorkel Trip-See Captain Cook Monument & Sea Caves

Join us to see the underwater beauty near Captain Cook's Monument and Puuhonua O Honaunau National Historic Park. Usually, at this time of day, the...

4 hours • Free Cancellation
4.9 (367)
from
$119
2-Hour Mauna Kea One Stop Sealife Snorkel Adventure

Get ready for an unforgettable ocean adventure as we depart from Kawaihae Harbor aboard Olohana — a brand-new, luxury 41’ powerboat built for comfort, speed, …More

5.0 (3)

2-Hour Mauna Kea One Stop Sealife Snorkel Adventure

Get ready for an unforgettable ocean adventure as we depart from Kawaihae Harbor aboard Olohana — a brand-new, luxury 41’ powerboat built for comfort, speed,...

2 hours • Free Cancellation
5.0 (3)
from
$119
Kona Manta Ray Night Snorkel— Small Group - Wetsuit Included

Family Friendly – We can accommodate kids, non-swimmers, and not-strong swimmers. All snorkel gear and wetsuits included. Small groups. Experienced crew. Amazing manta ray encounters. …More

4.8 (651)

Kona Manta Ray Night Snorkel— Small Group - Wetsuit Included

Family Friendly – We can accommodate kids, non-swimmers, and not-strong swimmers. All snorkel gear and wetsuits included. Small groups. Experienced crew. Amazing manta ray encounters....

2 hours • Free Cancellation
4.8 (651)
from
$123
Late Night Manta Snorkel

Watch the beautiful lights of Kona from our spacious 50’ catamaran, followed by the adventure of a lifetime - snorkeling with the majestic manta rays …More

Likely to Sell Out
Likely to Sell Out
5.0 (214)

Late Night Manta Snorkel

Watch the beautiful lights of Kona from our spacious 50’ catamaran, followed by the adventure of a lifetime - snorkeling with the majestic manta rays...

2 hours 15 minutes • Free Cancellation
5.0 (214)
from
$125
Recent activity reviews
Exactly what I needed from the Big Island!!
New York City
Big Island Manta Ray Night Snorkel
Anthony_B, Sep 2026
Exactly what I needed from the Big Island!!
Amazing time!!! Bryce and Noah are awesome hosts and funny as hell!! Trip was awesome!! Saw Mantas and White Tip Sharks!!! Well worth the money!!! Buying the 4hr snorkle tour right now!!! Exactly what I wanted!! Thank you!
Read more
40th anniversary
New York City
Big Island Manta Ray Night Snorkel
william_W, Sep 2026
40th anniversary
I can not recommend this adventure enough. Crew was very helpful and you will have the time of your life🥰
Read more
An incredible experience with a fun crew
New York City
KONA Manta Ray Night Snorkel – FREE re-ride if no Sightings
timbN2573BF, Sep 2026
An incredible experience with a fun crew
My wife and I went as part of our 20th anniversary vacation and had an absolute blast. Koa, Jacob, and Kecee were excellent guides and hosts. They were so informative, especially as people asked more questions and they shared so many cool stories about their business, experiences, and the sealife we saw on the tour itself.
Read more
Awesome Cruise
New York City
Kona Signature Catamaran Sunset Sail
Saadia_M, Sep 2026
Awesome Cruise
It was so awesome being out on the water. The crew was marvelous. Captain Mike was funny and turned the boat out of the nice breeze to play with the spinner dolphins!
Read more
Cool Hawaii screwed up but the tour company made it right.
New York City
Kona Snorkel Tour: Captain Cook Reef Snorkel, Dolphin & Sea Caves
914ryanh, Sep 2026
Cool Hawaii screwed up but the tour company made it right.
Booked with Cool Hawaii but Cool Hawaii wasnt supposed to book it for that day because the boat was in for maintenance. So we showed up and nobody was there. The tour company immediately made it right even offered to have someone come meet us and bring snorkel equipment and recommended a good snorkel spot. We ended up doing the tour a couple of days later. Eric and Lucas were great. Eric seemed to have as much fun driving the boat as we did riding on it. We saw a couple of pods of dolphins on the trip to snorkel. Captain Cook monument was a great place to snorkel water was very calm and there was alot of fish. Lucas cut up delicous pineapple for everyone. Saw some sea caves and historical sites on the return trip. Would definitely recommend this tour.
Read more
Sail with this crew!
New York City
Kona Signature Catamaran Sunset Sail
Sharon_A, Sep 2026
Sail with this crew!
The crew is very friendly and attentive, with stories, drinks, and dinner! The captain called while we were on our way to ensure we could find him. The weather wasn’t ideal but that didn’t stop us from having a wonderful time!
Read more
Salt experience
New York City
Hawaiian Salt Farm Tour in Kona
Devonne_B, Sep 2026
Salt experience
This was a great experience. I learned a lot about how the salt was made. How cold the depth of the ocean water was. It was really amazing.
Read more
MUST DO!!
New York City
Kona Snorkel Tour: Captain Cook Reef Snorkel, Dolphin & Sea Caves
nicholashC8226QH, Sep 2026
MUST DO!!
Genuinely the best experience we’ve ever had. Scary at first but quickly got over that once we were in the water. Such an honor getting the opportunity to experience the coral reefs. Will do again soon!
Read more
Waipio horseback riding..
New York City
Big Island Waipio on Horseback: Mountain to Ocean Views
582philv, Sep 2026
Waipio horseback riding..
Great experience. Guide was fantastic. Perfect amount of time. Highly recommended!
Read more
Great experience and great Tour Guide!
New York City
Big Island: Mauna Kea Summit and Stars Small-Group Adventure Tour
lainam654, Sep 2026
Great experience and great Tour Guide!
Really amazing experience and our Tourguide, Aaron, was outstanding! His knowledge of everything from geology to astronomy to Hawaiian history was amazing and his ability to deliver in a fun and easy to understand way was fantastic. The bus ride flew by! The sunset ABOVE the clouds at the top of Mauna Kea was so beautiful and the star gazing was lovely if a bit cloudy (we couldn't use the telescope, but we did see quite a bit of constellations intermittently. They took good care of us and I highly recommend the tour. Ask for Aaron!
Read more
An amazing experience!
New York City
Kona Manta Ray Snorkel Tour: Guaranteed or come again free
820fail, Sep 2026
An amazing experience!
Amazing tour! Smooth check-in and -out and professional crews. Big shout out to Deavon, Koa, Kanana and Greg who kept us safe and made the tour enjoyable. We saw four mantas, they were so close to us (don’t touch them). Still feel surreal, an unforgettable experience.
Read more
Incredible time with Koa Jacob and Marcus
New York City
KONA Manta Ray Night Snorkel – FREE re-ride if no Sightings
MegStyles123, Sep 2026
Incredible time with Koa Jacob and Marcus
Incredible trip! Koa, Jacob and Marcus were wonderful and made the experience extra special. This trip was a bucket list moment and I would 100% recommend this tour to anybody staying on the Big Island!
Read more
Very nice kona coffee tour
New York City
Kona Coffee Farm Tour
GoPlaces19743988640, Sep 2026
Very nice kona coffee tour
Very nice guide. Very informative
Read more
Family Salt tour
New York City
Hawaiian Salt Farm Tour in Kona
lea_d, Sep 2026
Family Salt tour
Went with a large group of 11 plus baby. Was pleasantly surprised on our experience. Our guide was very informative and learned each of our names. The salt tasting was great and they accommodated an allergy. Would recommend taking a sun hat or umbrella as you stand out in the sun for a bit during the tour. We ended up buying lots of different salts. Would love to come back again to try the foot soak.
Read more
Best tour around.
New York City
Award Winning Farm Tour: Coffee, Chocolate and Unique Gifts
Patricia_T, Sep 2026
Best tour around.
Get ready to learn all about how chocolate is processed. The owner and developer was so helpful and he really knows business. I loved his humor. Then he also has a soap processing business in there using only natural essential ingredients. I have to say this was the most memorable and best tour my husband and I have been too. Not to forget the coffee beans he grows and processes. It was so interesting to hear his life story and history behind his amazing plantation.
Read more
Our captain and deckhand...
New York City
Kona Hawaii Per Person Shared Fishing with Bite Me Sportfishing
jprack, Sep 2026
Our captain and deckhand...
Our captain and deckhand were both friendly and knowledgeable. Our boat was able to land a 440 lb Marlin, which was spectacular to see in person.
Read more
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