Aston Mahana at Kaanapali beach forecast: weather, water & waves
Kāʻanapali, HI · Maui, Lānaʻi & Molokaʻi, United States · 20.946, -156.692
Updated : very low seaweed, beach grade A-, sea 80°F.
Also listed as Aston Maui Kaanapali Villas.
Veabird's call
Saturday is the pick: little seaweed and mostly dry.
Best months ahead: September (A-) and October (A-); seaweed is usually lowest in December.
Grades from Veabird's beach forecast. Updated Nov 13, 01:00 UTC.
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Questions about Aston Mahana at Kaanapali
Does Aston Mahana at Kaanapali get sargassum (seaweed)?
No. Atlantic sargassum does not reach Hawaii.
How warm is the water at Aston Mahana at Kaanapali?
About 79°F in November. The sea is warmest in August, September and October (about 81°F) and coolest in January, February, March and April (about 77°F).
When is the best time to visit Aston Mahana at Kaanapali?
For warm water and dry weather, aim for January, February, July, August, October, November and December. October is usually the quietest of those, with about 14 rainy days and a sea near 81°F.
When is hurricane season at Aston Mahana at Kaanapali, and how often do storms hit?
The central Pacific hurricane season runs June through November. A tropical storm passed within 86 miles of Aston Mahana at Kaanapali in 3 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 2%.
What guests say about Aston Maui Kaanapali Villas
Guests like Excellent beachfront location and beautiful, less-crowded beach · Nice pools and jacuzzi; family-friendly pool area · Generally friendly and helpful staff · Spacious condos with kitchens; good value for money
Watch for Inconsistent room quality — some units dated, noisy, or in need of renovation · Occasional poor customer service / rude receptionist reported · Laundry facilities are old; some fitness equipment needs maintenance · Small or unusable balconies in some units; murphy bed inconvenience
- Cleanliness
7.9 - Service
8.8 - Location
9.5 - Room Quality
7.6 - Amenities
8.4 - Value for Money
9.1 - Food and Beverage
9.0 - Overall Experience
9.3
Read all 1,408 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 Aston Mahana at Kaanapali
Aston Mahana at Kaanapali 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 Aston Mahana at Kaanapali
Average highs run from about 79°F in January and February to 86°F in July, August and September. The sea is warmest in August, September and October (about 81°F) and coolest in January, February, March and April (about 77°F). November is usually the driest, with about 12 rainy days; May is the wettest, with about 21 rainy days.
| Month | Avg high | Sea | Rainy days |
|---|---|---|---|
| Jan | 79°F | 77°F | 13 |
| Feb | 79°F | 77°F | 14 |
| Mar | 80°F | 77°F | 18 |
| Apr | 81°F | 77°F | 18 |
| May | 82°F | 79°F | 21 |
| Jun | 84°F | 80°F | 17 |
| Jul | 86°F | 80°F | 13 |
| Aug | 86°F | 81°F | 14 |
| Sep | 86°F | 81°F | 15 |
| Oct | 85°F | 81°F | 14 |
| Nov | 83°F | 79°F | 12 |
| Dec | 81°F | 79°F | 13 |
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 Kāʻanapali, 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), ~28 km
- Lānaʻi (LNY), ~32 km
- Molokaʻi (MKK), ~48 km
Nearby resorts
- Honua Kai Resort & Spa Kāʻanapali, HI · 0 km
- Kaanapali Beach Club Kāʻanapali, HI · 0 km
- The Westin Nanea Ocean Villas, Ka'anapali Kāʻanapali, HI · 0 km
- Papakea Resort Kāʻanapali, HI · 1 km
- The Westin Ka'anapali Ocean Resort Villas Kāʻanapali, HI · 1 km
- Aston Maui Ka‘anapali Villas Kāʻanapali, HI · 1 km
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