Waikoloa Beach Marriott Resort & Spa beach forecast: weather, water & waves
Waikoloa, HI · Hawaiʻi Island (Big Island), United States · 19.916, -155.885
Updated : very low seaweed, beach grade A, sea 81°F.
Veabird's call
Take Friday at A with little seaweed, mostly dry skies and 81F water.
Come back in October which grades A, with Kealakekua Bay nearby.
Grades from Veabird's beach forecast; wording by AI (Muse Spark), checked against the forecast. Updated Nov 13, 01:00 UTC.
Tell me when Waikoloa Beach Marriott Resort & Spa grades A
One email when the beach grades A, at most once a week per beach. We only ask for your email address, and every email has a one-click unsubscribe.
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Questions about Waikoloa Beach Marriott Resort & Spa
Does Waikoloa get sargassum (seaweed)?
No. Atlantic sargassum does not reach Hawaii.
How warm is the water at Waikoloa Beach Marriott Resort & Spa?
About 80°F in November. The sea is warmest in August and September (about 82°F) and coolest in March (about 77°F).
When is the best time to visit Waikoloa Beach Marriott Resort & Spa?
For warm water and dry weather, aim for June, July, August, October and November. October is usually the quietest of those, with about 2 rainy days and a sea near 81°F.
When is hurricane season at Waikoloa Beach Marriott Resort & Spa, and how often do storms hit?
The central Pacific hurricane season runs June through November. A tropical storm passed within 86 miles of Waikoloa Beach Marriott Resort & Spa in 3 of the 55 seasons from 1971 to 2025, and a hurricane within 58 miles in 0. The riskiest stretch is around July 23, when the chance of a storm passing in any one week is about 1% or less; across all of August it is about 2%.
What guests say about Waikoloa Beach Marriott Resort & Spa
Guests like Friendly staff · Newly renovated rooms · Good food options
Watch for High extra fees for amenities · Distance from local culture
- Cleanliness
8.0 - Service
9.0 - Location
8.0 - Room Quality
9.0 - Amenities
7.5 - Value for Money
7.5 - Food and Beverage
8.5 - Overall Experience
8.5
Read all 288 reviews · Compare on Expedia
Scores and reviews come from guests who stayed, through LiteAPI (Nuitée). The likes, watch-fors and category scores are an AI summary of those reviews. Partner links: Veabird may earn a commission.
Sargassum season at Waikoloa Beach Marriott Resort & Spa
Waikoloa Beach Marriott Resort & Spa sits outside the reach of the Atlantic sargassum belt; seaweed landings are rare in any month.
The Big Island month by month
Typical weather, water temperature, seaweed and crowds for every month: the best time to visit the Big Island.
Weather & water by month at Waikoloa Beach Marriott Resort & Spa
Average highs run from about 79°F in January, February and March to 83°F in August, September and October. The sea is warmest in August and September (about 82°F) and coolest in March (about 77°F). July is usually the driest, with about 1 rainy day; March is the wettest, with about 6 rainy days.
| Month | Avg high | Sea | Rainy days |
|---|---|---|---|
| Jan | 79°F | 78°F | 4 |
| Feb | 79°F | 78°F | 4 |
| Mar | 79°F | 77°F | 6 |
| Apr | 80°F | 78°F | 4 |
| May | 81°F | 79°F | 3 |
| Jun | 81°F | 80°F | 2 |
| Jul | 82°F | 81°F | 1 |
| Aug | 83°F | 82°F | 2 |
| Sep | 83°F | 82°F | 3 |
| Oct | 83°F | 81°F | 2 |
| Nov | 82°F | 80°F | 2 |
| Dec | 80°F | 79°F | 4 |
Monthly averages from 6 years of ERA5 reanalysis (Open-Meteo) for this area's 0.5° grid cell; rainy days have at least 1 mm (0.04 in). Any given year can differ.
Cleanup & barriers
- Offshore barriers
- Not needed: Atlantic sargassum does not reach Hawaii.
- Public cleanup
- Volunteer groups (Sustainable Coastlines Hawaiʻi, Hawaiʻi Wildlife Fund) clear ocean plastic, heaviest on windward shores.
- Resort crews
- Resort crews groom beaches daily.
- Typical clearing time
- n/a
Safety notes
Domestic travel (no State Dept advisory)
- Winter swells (Nov–Mar) make north- and west-facing shores dangerous; summer swells hit south shores.
- Shorebreak and rip currents cause most visitor injuries: swim at lifeguarded beaches.
- Hawaiʻi bans sunscreens with oxybenzone and octinoxate.
- Stay 50 ft from monk seals and 10 ft from sea turtles.
- Vog (volcanic haze) can affect air quality; check the Hawaiʻi Volcano Observatory.
- Hilo side is much wetter than the Kona–Kohala resort coast.
Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.
Things to do near Waikoloa, HI
- Hawaiʻi Volcanoes National Park
- Manta ray night snorkel (Kona)
- Kealakekua Bay
- Maunakea stargazing
- Punaluʻu black sand beach
Fly in for the best beach days
Suggested dates are a week in December. Change them to match the live forecast above.
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Nearest airports
- Kona Intl (KOA), ~26 km
- Hilo Intl (ITO), ~90 km
Nearby resorts
- Hilton Waikoloa Village Waikoloa, HI · 1 km
- Ocean Club Waikoloa, HI · 2 km
- Mauna Lani Bay Resort Waikoloa, HI · 4 km
- Fairmont Orchid Waikoloa, HI · 5 km
- Mauna Kea Beach Resort Kohala Coast, HI · 12 km
- Kona Village, A Rosewood Resort Waikoloa, HI · 14 km
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