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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 pm Thursday 23 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
25.0° C
(Which is slightly warmer than usual)How big are the waves at Grandma's today?
The current surf forecast for Grandma's at 8PM is: 0.4m 13s primary swell from a West direction (forecast issued at 01:00pm April 23). An open ocean swell of 0.4m 12s is not directed at the surf break, a second open ocean swell of 0.9m 4s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 Apr) | 1.5ft (0.5m) | 13s |
| Afternoon (23 Apr) | 1.5ft (0.4m) | 13s |
| Evening (23 Apr) | 1.5ft (0.4m) | 13s |
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 Thu afternoon, min 22°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thu 23 | Friday 24 | Saturday 25 | Sun 26 | |||||||||||||||||||||
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 | 2 AM | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
W 13 | W 13 | W 13 | W 13 | W 12 | WNW 15 | SW 14 | SW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | SW 14 | SSW 16 | SW 16 | SW 15 | SSW 16 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 | |
52 | 52 | 51 | 51 | 49 | 42 | 49 | 46 | 58 | 57 | 57 | 55 | 50 | 29 | 98 | 61 | 60 | 94 | 119 | 121 | 118 | 109 | 104 | 104 | |
Wind (km/h) | ||||||||||||||||||||||||
glassy | glassy | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | off | cross-off | cross-off | off | off | off | cross-off | |
High Tide | 10:07AM0.23m | 10:15PM0.66m | 11:22AM0.29m | 11:14PM0.63m | 12:21PM0.36m | 00:07AM0.59m | ||||||||||||||||||
Low Tide | 2:29PM0.08m | 5:40AM0.04m | 3:53PM0.12m | 6:18AM0.02m | 5:18PM0.13m | 6:49AM0.00m | ||||||||||||||||||
 |  | |  |  | | | | | | | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 6:00 | — | — | — | — | — | — | — | 5:58 | — |
 | — | — | 6:46 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | — | — | — | 6:47 | — | — | — | — | 6:47 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 26 | 26 | 25 | 24 | 23 | 23 | 23 | 23 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 24 | 25 | 26 | 25 | 23 | 23 | 23 | 22 | 23 |
28 | 29 | 25 | 24 | 23 | 23 | 22 | 22 | 24 | 25 | 25 | 22 | 22 | 21 | 21 | 24 | 26 | 27 | 25 | 24 | 25 | 24 | 23 | 24 | |
Swell 1 Height (m) Direction Period (s) | W 13 | W 13 | W 13 | W 13 | W 12 | WNW 15 | WNW 15 | SW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 13 | WNW 12 | WNW 12 | SSW 16 | NNE 8 | N 8 | NNE 8 | SW 16 | SW 16 | SW 16 | SW 15 | SW 15 | SW 15 |
 kJ | 52 | 52 | 51 | 51 | 49 | 42 | 42 | 46 | 58 | 57 | 57 | 55 | 50 | 28 | 98 | 34 | 32 | 21 | 119 | 121 | 118 | 109 | 104 | 104 |
Swell 2 Height (m) Direction Period (s) | NNW 12 | NNE 11 | NW 12 | NW 12 | NW 12 | W 12 | W 12 | W 12 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SW 13 | NNE 9 | WNW 12 | SW 16 | SW 15 | SSW 16 | N 8 | NNE 8 | NNE 8 | NNW 13 | NNW 12 | NNW 12 |
| kJ | 59 | 39 | 37 | 36 | 35 | 25 | 25 | 25 | 17 | 17 | 17 | 17 | 27 | 15 | 28 | 61 | 60 | 94 | 33 | 21 | 21 | 62 | 56 | 56 |
Swell 3 Height (m) Direction Period (s) | NNE 11 | NW 12 | NNE 11 | WNW 16 | NNE 10 | NW 12 | SW 14 | WNW 14 | NNW 11 | SSE 10 | SSW 13 | SSW 16 | NNE 9 | SW 14 | NW 12 | WNW 12 | WNW 12 | NW 11 | NW 11 | NW 11 | NW 11 | NNE 8 | NNE 8 | NNE 8 |
| kJ | 40 | 37 | 22 | 50 | 20 | 35 | 49 | 41 | 12 | 10 | 18 | 25 | 8 | 29 | 37 | 27 | 27 | 33 | 32 | 33 | 33 | 21 | 12 | 12 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 3 | NNE 4 | NE 4 | NNE 4 | NNE 10 | NNE 3 | NNE 10 | NNE 9 | NNE 9 | NNE 3 | NNE 3 | NNE 3 | NNE 8 | E 4 | E 4 | E 4 | — | E 4 | E 4 | E 5 | E 5 | E 4 |
| kJ | — | — | 6 | 25 | 17 | 7 | 56 | 4 | 31 | 28 | 27 | 5 | 7 | 5 | 33 | 22 | 18 | 12 | — | 19 | 18 | 34 | 27 | 18 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 4 | 12 | 4 | 4 | 4 | 4 | 4 | 4 | 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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