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Grandma's Surf Forecast
/ HAW – Maui (46 breaks) / Hawaii (267 breaks) /
Surf Forecasts:
Grandma's surfForecast / HAW – Maui / USA
48hr Weather and Surf, issued 1 am Wednesday 29 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Grandma's surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Grandma's sea temperature is
25.2° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 5AM is: 0.4m 12s primary swell from a Southwest direction (forecast issued at 01:00am April 29). An open ocean swell of 0.4m 13s is not directed at the surf break, a second open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Apr) | 1ft (0.3m) | 12s |
| Afternoon (29 Apr) | 0.5ft (0.2m) | 12s |
| Evening (29 Apr) | 1ft (0.3m) | 6s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 22°C on Wed night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 1 | ||||||||||||||||||||||
2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NW 13 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 11 | SE 6 | S 18 | S 18 | SSW 13 | SSW 12 | S 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 15 | S 15 | SSW 15 | SSW 15 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | |
27 | 36 | 22 | 22 | 13 | 12 | 5 | 25 | 25 | 16 | 15 | 46 | 51 | 86 | 51 | 51 | 39 | 68 | 72 | 73 | 76 | 85 | 86 | 50 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | off | |
High Tide | 2:15AM0.43m | 3:08PM0.64m | 2:53AM0.38m | 3:44PM0.67m | 3:29AM0.34m | 4:20PM0.70m | ||||||||||||||||||
Low Tide | 8:06AM-0.04m | 9:23PM0.10m | 8:32AM-0.04m | 10:09PM0.10m | 9:00AM-0.04m | 10:55PM0.10m | ||||||||||||||||||
 | |  | |  | |  | | | | | | | | | | | | | | | | | | |
 | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | — | 6:50 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 22 | 22 | 23 | 25 | 26 | 25 | 23 | 23 | 23 | 22 | 23 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 24 | 26 | 26 | 25 | 24 | 23 |
22 | 21 | 21 | 24 | 26 | 24 | 22 | 22 | 23 | 21 | 22 | 24 | 26 | 24 | 22 | 23 | 21 | 22 | 23 | 26 | 27 | 25 | 24 | 23 | |
Swell 1 Height (m) Direction Period (s) | SW 12 | NW 13 | NW 13 | NW 12 | NW 14 | NW 14 | NW 13 | NW 13 | NW 13 | NW 12 | NNW 12 | NNW 12 | NNW 12 | NNW 11 | NW 11 | NNW 13 | NNW 13 | NNW 13 | NNW 12 | NNW 12 | SSW 15 | SSW 16 | NNW 11 | NW 11 |
 kJ | 22 | 43 | 42 | 40 | 51 | 49 | 46 | 44 | 41 | 39 | 57 | 56 | 54 | 51 | 33 | 66 | 67 | 65 | 60 | 56 | 76 | 85 | 51 | 32 |
Swell 2 Height (m) Direction Period (s) | SE 6 | SW 12 | SW 12 | SW 12 | SSW 12 | ESE 5 | SE 6 | SE 6 | SE 6 | SE 6 | ESE 6 | SE 6 | SSW 16 | SSW 16 | SSW 16 | SE 6 | SE 6 | S 15 | SSW 15 | SSW 15 | NNW 12 | NNW 12 | SSW 16 | NW 17 |
| kJ | 5 | 36 | 22 | 22 | 13 | 3 | 5 | 9 | 6 | 5 | 3 | 9 | 51 | 86 | 51 | 9 | 10 | 68 | 72 | 73 | 56 | 54 | 86 | 72 |
Swell 3 Height (m) Direction Period (s) | NW 13 | SE 6 | SE 5 | SE 5 | NNE 5 | SSW 11 | NNE 4 | S 18 | S 18 | SSW 13 | SSW 12 | S 16 | SE 5 | SE 5 | SE 6 | SSW 16 | S 15 | NNE 8 | NNE 8 | NNE 8 | SE 6 | SE 6 | NNE 8 | SSW 16 |
| kJ | 27 | 5 | 4 | 1 | 2 | 12 | 3 | 25 | 25 | 16 | 15 | 46 | 7 | 4 | 5 | 51 | 39 | 12 | 13 | 11 | 9 | 9 | 13 | 50 |
Wind waves Height (m) Direction Period (s) | E 5 | E 5 | E 5 | E 7 | E 5 | NNE 6 | E 6 | NE 2 | NNE 2 | NNE 5 | NNE 5 | E 6 | E 6 | E 6 | E 6 | — | E 6 | E 6 | E 5 | E 6 | E 6 | E 6 | E 6 | E 6 |
| kJ | 97 | 83 | 39 | 99 | 65 | 7 | 106 | 1 | 1 | 2 | 2 | 149 | 106 | 117 | 108 | — | 112 | 72 | 45 | 72 | 188 | 194 | 124 | 116 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 16 | 15 | 17 | 17 | 17 | 17 | 17 | 15 | 17 | 17 | 123 | 13 | 12 | 12 | 12 | 12 | 12 | 4 | 12 | 12 | 12 | 4 | 12 | 12 |
Best forecast wave conditions in Maui | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Grandma's surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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