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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 Monday 27 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 7AM is: 0.5m 14s primary swell from a Southwest direction (forecast issued at 01:00am April 27). An open ocean swell of 0.4m 11s is not directed at the surf break, a second open ocean swell of 0.7m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Apr) | 1.5ft (0.5m) | 13s |
| Afternoon (27 Apr) | 1.5ft (0.5m) | 13s |
| Evening (27 Apr) | 1.5ft (0.5m) | 13s |
Table - waves today at Grandma's. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastLight rain (total 4mm), mostly falling on Mon afternoon. Warm (max 26°C on Tue afternoon, min 22°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Monday 27 | Tuesday 28 | Wednesday 29 | ||||||||||||||||||||||
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 |    |    |    | |||||||||||||||||||||
SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | NW 13 | SW 12 | SW 12 | SW 12 | S 13 | SSW 11 | S 13 | SE 6 | |
95 | 91 | 88 | 87 | 85 | 85 | 84 | 84 | 61 | 42 | 41 | 39 | 37 | 37 | 37 | 36 | 27 | 36 | 22 | 22 | 14 | 12 | 14 | 5 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | glassy | glassy | cross-off | off | off | off | off | off | glassy | off | off | off | off | off | off | off | off | off | off | off | off | |
High Tide | 00:54AM0.54m | 1:53PM0.52m | 1:36AM0.48m | 2:32PM0.58m | 2:15AM0.43m | 3:08PM0.64m | ||||||||||||||||||
Low Tide | 7:16AM-0.01m | 7:36PM0.12m | 7:41AM-0.03m | 8:32PM0.11m | 8:06AM-0.04m | 9:23PM0.10m | ||||||||||||||||||
 | |  |  |  | | | | | | | |  | | | |  | | | | | | | | |
 | — | 5:58 | — | — | — | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:50 | — | — |
— | — | — | — | 1 | 1 | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 24 | 25 | 25 | 25 | 24 | 23 | 23 | 22 | 23 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 23 | 25 | 26 | 25 | 23 | 23 |
24 | 25 | 26 | 27 | 28 | 27 | 25 | 24 | 25 | 23 | 24 | 27 | 28 | 26 | 23 | 23 | 22 | 22 | 23 | 25 | 25 | 23 | 22 | 23 | |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | SW 12 | NW 13 | NW 13 | NW 12 | NW 14 | NW 14 | NW 13 | NW 13 |
 kJ | 95 | 91 | 88 | 87 | 85 | 85 | 84 | 84 | 61 | 42 | 41 | 39 | 37 | 37 | 37 | 36 | 22 | 42 | 42 | 39 | 50 | 49 | 46 | 44 |
Swell 2 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 11 | NW 11 | NW 11 | NNE 7 | NNE 7 | NW 10 | NW 10 | NNW 10 | NNW 10 | NNW 10 | NNW 10 | NNE 5 | NNE 5 | NW 13 | SE 5 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 11 | SSW 11 | NE 3 |
| kJ | 31 | 31 | 30 | 30 | 30 | 10 | 9 | 17 | 16 | 10 | 10 | 10 | 10 | 4 | 6 | 28 | 5 | 36 | 22 | 22 | 13 | 12 | 12 | 3 |
Swell 3 Height (m) Direction Period (s) | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NNE 8 | NW 11 | NW 11 | NNE 6 | SE 5 | ESE 4 | ESE 5 | ESE 5 | SSE 4 | NNW 10 | NW 14 | SE 5 | NW 13 | SE 6 | SE 5 | NNE 5 | S 13 | SE 5 | S 13 | SE 6 |
| kJ | 12 | 11 | 11 | 11 | 11 | 29 | 18 | 8 | 4 | 2 | 2 | 2 | 2 | 10 | 29 | 4 | 27 | 5 | 4 | 2 | 14 | 1 | 14 | 5 |
Wind waves Height (m) Direction Period (s) | E 5 | E 5 | E 5 | E 5 | E 5 | E 7 | E 5 | E 5 | E 5 | E 5 | E 5 | E 5 | E 4 | E 7 | ESE 4 | E 5 | E 5 | E 5 | E 5 | E 7 | NNE 5 | N 3 | NNE 3 | E 5 |
| kJ | 29 | 22 | 55 | 60 | 43 | 130 | 39 | 54 | 42 | 36 | 36 | 21 | 26 | 81 | 2 | 52 | 82 | 77 | 32 | 99 | 6 | 5 | 6 | 90 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 12 | 17 | 17 | 17 | 17 | 16 | 4 | 4 | 4 | 17 | 17 | 15 | 17 | 13 | 4 |
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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