Grandma's
- Shortboard, Longboard
- Best for
- Beginner to Intermediate
- Skill Level
- Swell, Ocean
- Spot Type
- Moderate
- Crowd Level
This spot information is AI-assisted and has not been human verified. It may be incomplete, outdated, or incorrect. Verify safety, access, local rules, and current conditions with official or local sources before riding.
About
Grandma’s is a small reef break on Maui’s west side known for producing gentle, rolling surf with both left- and right-hand waves. Reports describe it as relatively exposed yet fairly consistent, making it a common choice for relaxed sessions—especially on the longboard end. Across sources, conditions are described as strongly tied to swell: summer south swells are the standout window, and an optimal swell direction is listed as S/SW (with the spot also described as working best in summer). Mid tide is repeatedly referenced as the preferred timing, and typical surf is described as small (around 2–3 feet), with the caveat that very large south swells can become more difficult and prone to closing out. Safety is a major theme for this reef area. The water is shallow over the reef, particularly at low tide, and fire coral is reported nearby—touching it can cause painful stings. Sharks are also repeatedly mentioned for Olowalu, with specific guidance to avoid surfing when the water is brown or murky (including avoiding dawn/dusk and after heavy rains). Crowds can build during summer swells and on weekends, and one source recommends aiming for smaller sets (under about 3 feet) and avoiding stormy conditions. There are no lifeguards reported at the spot, so using appropriate personal gear and staying cautious around the reef is strongly implied by the hazard notes.
- Small, consistent reef waves with both-direction surf
- Best performance with summer south swells
- Mellow, peeling wave style suited to learning
- Reef is shallow and requires careful attention
- Consistent small surf that favors beginners and relaxed sessions.
- Gentle, peeling waves with rides that can be long on the right swell.
- Summer south swells are best for consistent conditions.
- Campground proximity reported at/near the spot.
- Reef and shallow water hazards (especially at low tide).
- Fire coral stings are possible.
- Shark presence is reported for the area.
- Crowds can occur.
Wind, water and seasons
Wind
- Direction
- N, NNE, E
- Offshore directions
- N, NNE, NE
- Wind Range
- 10–20 kts
- Wind Type
- Trade — Primarily swell-dependent for surfing; trade-wind regime around the area.
- Reliability
- Moderate; surfing is mainly reliant on swell.
- Gust Factor
- Light gusts — Gustiness described as generally light.
- Best Months
- May, June, July, August, September
- Shadow Zones
- West Maui Mountains can provide some shelter from stronger northeasterly trades.
Water & beach
- Water Type
- Swell, Ocean
- Beach
- Mixed — Mixed sand/rocks at access; reef environment.
- Beach Size
- Small
- Waves
- Small — Small waves reported around 2–3 feet; also described as small overall.
- Launch
- Small — A narrow strip of sand and rocks along the highway with several entry points through the reef; described access via small turnouts along the road.
- Launch Difficulty
- Moderate — Narrow entry/reef access; multiple entry points through the reef are mentioned.
Through the year
Regularly crowded during summer swells and on weekends.
Winter months (November to March) see more frequent rain and occasional storms.
By sport
What to expect for each.
An exposed reef break with fairly consistent surf producing small, gentle, rolling waves suitable for both left- and right-hand waves. Best when south swells arrive; on very large south swells it can become difficult to manage and more prone to closing out.
- Wave Direction
- Both
- Optimal Swell
- S, SW, SSE
- Swell Height
- 0.5–2 m
- Optimal Tide
- Mid — Mid tide is listed as optimal.
- Shelter
- Semi-sheltered — Described as exposed overall, with some sheltering effects depending on conditions.
- Wind Effect
- Offshore winds from the north and east help groom the faces; southerly winds can make it choppy. (Separate source also describes offshore wind from the northeast.)
- Bigger Swell
- Can become difficult to manage and prone to closing out on very large south swells.
- Wave Quality
- Good — Generally good quality on the right swell and wind.
- Wave Power
- Soft — Gentle, rolling waves.
- Wave Shape
- Peeling — Longboard-leaning peeling waves.
- Peel Speed
- Slow — Mellow pace.
- Ride Length
- Medium — Rides can be long on a good south swell.
- Ride Length Details
- On a good south swell, rides reported around 50 to 100 meters.
Check the forecast before you go
See wind, waves, weather and session windows for Grandma's in the full forecast view.
Grandma's wind and wave forecast summary
- Wind
- 3–10 ktsGusts 20 kts
- Direction
- NE34°
- Strongest day
- Sat, Oct 2410 kts
- Windy days
- 0/712 kts or more
- Waves
- 0.6–1.1 m10s period
- Temperature
- 22–29 °C
Over the next 7 days, Grandma's is forecast for daytime winds of 3–10 kts, peaking around 10 kts on Saturday, October 24 with gusts to 20 kts. The prevailing direction is NE. Waves run 0.6–1.1 m with a period of about 10s. Based on the Wavind model, in the spot’s local time.
Other spots in the area
What to know before you launch
Safety, access, restrictions, rescue, and local rules can change. Treat these details as informational and confirm them locally before launching.
Hazards
- Shallow reef
- Reef
- Fire coral
- Sharks
- Crowds
Rescue & support
- Lifeguard
- None — No lifeguards reported at the spot.
- Localism / Vibe
- None — Localism described as none.
Rules of the spot
Standard surfing etiquette applies; be mindful of surf schools and beginners in the lineup.
- Avoid surfing when the water is brown or murky (shark breeding area risk).
- Be careful of fire coral; painful stings can occur if touched.
- Try to surf waves under 3 feet.
- Avoid surfing in stormy conditions.
- Avoid crowded spots.
- Avoid surfing at dawn, dusk, or after heavy rains when the water is murky.
- The reef is especially shallow at low tide.
Getting there & access
- Nearest City
- Lahaina
- Nearest Town
- Olowalu
- Parking
- Park in the area about half a mile from the tunnel near Ukuhuname Park; limited roadside parking in dirt pull-offs are also noted.
- Access
- Head south from Lahaina on Honoapiilani Highway; look for Ukuhuname (Ukamehame) Park. Park about half a mile from the tunnel. The spot is the first turn on the left after the tunnel, between mile markers 11 and 11.5. Another description places access near Mile Marker 14 via small turnouts along the road.
- Cost Level
- Moderate
- Local Language
- English
What's on the beach
- Accommodation
- Nearby town — Vacation rentals and hotels are located further north in Lahaina and Ka'anapali.
- Food & Drink
- A general store and a juice stand are located a short drive away in Olowalu.
- Equipment Rental:
- Rental shops are available in nearby Lahaina.
No schools or services are listed for this spot yet.
Off the water
From riders who've been here
Latest reported conditions
Spot questions
Frequently asked questions
When is the best season at Grandma's?
The best overall months at Grandma's are June, July, August, September. The best wind months are May, June, July, August, September.
Which wind directions work at Grandma's?
Grandma's works with N, NNE, E winds. Offshore directions are N, NNE, NE.
What skill level is Grandma's suitable for?
Grandma's suits these riding levels: Surfing: Beginner.