Hana Kai Maui beach forecast: weather, water & waves
Hāna, HI · Maui, Lānaʻi & Molokaʻi, United States · 20.759, -155.987
Updated : very low seaweed, beach grade C+, sea 80°F.
Veabird's call
Hold for Tuesday for a B with little seaweed and 80F water, with rain and surf around.
January and October typically grade B here, and the Road to Hāna works for a wet east facing beach day.
Grades from Veabird's beach forecast; wording by AI (Muse Spark), checked against the forecast. Updated Nov 13, 01:00 UTC.
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Questions about Hana Kai Maui
Does Hana Kai Maui get sargassum (seaweed)?
No. Atlantic sargassum does not reach Hawaii.
How warm is the water at Hana Kai Maui?
About 79°F in November. The sea is warmest in September (about 81°F) and coolest in February, March and April (about 76°F).
When is the best time to visit Hana Kai Maui?
For warm water and dry weather, aim for January, June, October, November and December. October is usually the quietest of those, with about 26 rainy days and a sea near 80°F.
When is hurricane season at Hana Kai Maui, and how often do storms hit?
The central Pacific hurricane season runs June through November. A tropical storm passed within 86 miles of Hana Kai Maui in 4 of the 55 seasons from 1971 to 2025, and a hurricane within 58 miles in 1. The riskiest stretch is around July 30, when the chance of a storm passing in any one week is about 1% or less; across all of August it is about 3%.
Sargassum season at Hana Kai Maui
Hana Kai Maui sits outside the reach of the Atlantic sargassum belt; seaweed landings are rare in any month.
Maui month by month
Typical weather, water temperature, seaweed and crowds for every month: the best time to visit Maui.
Weather & water by month at Hana Kai Maui
Average highs run from about 74°F in February to 80°F in August, September and October. The sea is warmest in September (about 81°F) and coolest in February, March and April (about 76°F). January is usually the driest, with about 23 rainy days; May and July are the wettest, with about 30 rainy days.
| Month | Avg high | Sea | Rainy days |
|---|---|---|---|
| Jan | 76°F | 77°F | 23 |
| Feb | 74°F | 76°F | 25 |
| Mar | 75°F | 76°F | 29 |
| Apr | 75°F | 76°F | 28 |
| May | 76°F | 77°F | 30 |
| Jun | 78°F | 79°F | 27 |
| Jul | 78°F | 79°F | 30 |
| Aug | 80°F | 80°F | 29 |
| Sep | 80°F | 81°F | 28 |
| Oct | 80°F | 80°F | 26 |
| Nov | 77°F | 79°F | 27 |
| Dec | 76°F | 78°F | 26 |
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.
- Lahaina is still rebuilding after the 2023 fire: respect closed areas.
- Afternoon trade winds make west Maui channels choppy.
Check official advisories and local flags before swimming. Decomposing sargassum releases hydrogen sulfide; avoid heavy piles.
Things to do near Hāna, HI
- Road to Hāna
- Haleakalā sunrise (reservations)
- Molokini snorkel
- Humpback whale season (Dec–Apr)
- Lānaʻi day trip by ferry
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
- Kahului (Maui) (OGG), ~49 km
- Lānaʻi (LNY), ~100 km
Nearby resorts
- Hana Maui Resort Hāna, HI · 1 km
- Paia Inn Pāʻia, HI · 45 km
- Aston Maui Hill Wailea, HI · 48 km
- Hale Kamaole Wailea, HI · 48 km
- Wailea Ekahi Village Wailea, HI · 48 km
- Ke Ali‘i Ocean Villas Wailea, HI · 48 km
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