Park

Hanauma Bay Nature Preserve park

Hawaii, USA Oahu watershed 21.268°, -157.696°
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Hanauma Bay Nature Preserve -- Hawaii park
Hanauma Bay Nature Preserve Hawaii · Oahu watershed
About this park

Hanauma Bay Nature Preserve

Hanauma Bay Nature Preserve is a popular tourist destination in Hawaii, known for its crystal-clear waters and diverse marine life. The bay is located on the southeastern coast of Oahu and is a protected marine life conservation area.

One of the main reasons to visit Hanauma Bay is for its snorkeling opportunities. Visitors can rent equipment and explore the bay's coral reefs, which are home to over 400 species of fish. The bay also offers educational programs and guided tours for those who want to learn more about the marine life and conservation efforts in the area.

One of the most popular points of interest in Hanauma Bay is the marine education center, which features interactive exhibits and displays about the bay's ecosystem. Visitors can also hike to the top of the bay's crater for panoramic views of the surrounding area.

Interesting facts about Hanauma Bay include that it was formed over 32,000 years ago from a volcanic eruption and that it was designated as a protected marine life conservation area in 1967. The bay is also known for its appearance in the opening scene of the TV show "Hawaii Five-0."

The best time of year to visit Hanauma Bay is in the summer months, when the water is calm and clear. It is important to note that the bay is closed on Tuesdays and visitors are required to watch a short video about conservation efforts before entering the preserve.
StateHawaii
WatershedOahu
Latitude21.2680°
Longitude-157.6957°
Land designation

Park & land designation reference

A quick legend for the federal and state land categories Snoflo tracks. Each designation comes with different rules around access, recreation, and resource extraction.

National Park
Large protected natural areas managed by the federal government to preserve significant landscapes, ecosystems, and cultural resources; recreation is allowed but conservation is the priority.
State Park
Public natural or recreational areas managed by a state government, typically smaller than national parks and focused on regional natural features, recreation, and education.
Local Park
Community-level parks managed by cities or counties, emphasizing recreation, playgrounds, sports, and green space close to populated areas.
Wilderness Area
The highest level of land protection in the U.S.; designated areas where nature is left essentially untouched, with no roads, structures, or motorized motorized access permitted.
National Recreation Area
Areas set aside primarily for outdoor recreation (boating, hiking, fishing, often around reservoirs, rivers, or scenic landscapes); may allow more development.
National Conservation Area (BLM)
BLM-managed areas with special ecological, cultural, or scientific value; more protection than typical BLM land but less strict than Wilderness Areas.
State Forest
State-managed forests focused on habitat, watershed, recreation, and sustainable timber harvest.
Bureau of Land Management (BLM) Land
Vast federal lands managed for mixed use -- recreation, grazing, mining, conservation -- with fewer restrictions than national parks or forests.
Detailed forecast

Plan your visit down to the hour

Same weather feed Snoflo's iOS app uses -- updated continuously from NOAA / yr.no.

Hourly detail

Next 5 days, hour by hour

Temperature line with weather symbols on top, snow + rain accumulation as columns, humidity as a dotted line.

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Deep dive

5-day forecast table

Every 3 hours, broken out across temperature, snow, rain, humidity, and wind.

TimeConditionTemp (°F)Snow (in)Rain (in)Humidity (%)Wind (mps)Wind dir
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Long-term outlook

15-day temperature & precipitation

Daily temperatures, snow, and rain projected over the next two weeks.

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Stay nearby

Area campgrounds

Snoflo-tracked campgrounds within reach of Hanauma Bay Nature Preserve, with reservations status.

Around the spot

Plan a longer trip

The closest parks, lakes, fishing spots, and POIs so a park visit can grow into a full weekend.

Responsible recreation & Leave No Trace

Know before you go
Check the operator's site for hours, permit requirements, seasonal closures, and fire restrictions before heading out.
Stay on trail
Stick to marked paths to protect vegetation, prevent erosion, and avoid disturbing wildlife habitat.
Respect wildlife
Observe from a distance, never feed wildlife, and store food securely if camping is permitted on-site.
Pack it in, pack it out
Carry out all trash, food scraps, and gear. Many parks have limited or no trash service.
Leave what you find
Don't take rocks, plants, or artifacts. They make the park what it is for the next visitor.

Set push alerts in the Snoflo app

Save Hanauma Bay Nature Preserve as a favorite, set a custom threshold (precipitation, freezing temperatures, fire-restriction days), and the iOS app will push the moment conditions cross.

FAQ

About Hanauma Bay Nature Preserve

What can I do at Hanauma Bay Nature Preserve?

Most Snoflo-tracked parks support hiking, picnicking, and wildlife viewing. Check the operator's site for activity-specific rules (camping, fishing, paddling, hunting).

How fresh is the weather data?

The hourly forecast updates throughout the day from NOAA / yr.no. Streamflow comes live from USGS streamgauges.

When is the best time to visit?

Use the 15-day temperature & precipitation outlook on this page to plan -- pick a window with comfortable temperatures and low precipitation.

How do I get to Hanauma Bay Nature Preserve?

Tap Directions in the hero above to open driving directions in Google Maps, or Open in map to center the Snoflo interactive map on the park.

Can I get alerts when conditions change?

Yes -- alerts are managed in the Snoflo iOS app. Favorite this park, set a threshold (temperature, precipitation), and you'll get a push the moment it crosses.

More parks

Other parks near here

Snoflo-tracked parks within driving distance of Hanauma Bay Nature Preserve.