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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 7 pm 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 2AM is: 0.4m 13s primary swell from a Southwest direction and 0.3m 10s secondary swell from a Northwest direction (forecast issued at 07:00pm April 27). An open ocean swell of 1.1m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (28 Apr) | 1.5ft (0.4m) | 12s |
| Afternoon (28 Apr) | 1.5ft (0.4m) | 12s |
| Evening (28 Apr) | 1.5ft (0.4m) | 12s |
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 3mm), mostly falling on Mon night. Warm (max 26°C on Tue afternoon, min 22°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 27 | Tuesday 28 | Wednesday 29 | Thu 30 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
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 | SSW 12 | SSW 11 | SSW 11 | S 18 | E 6 | SSW 13 | SSW 12 | S 16 | S 16 | |
85 | 84 | 84 | 44 | 42 | 41 | 39 | 37 | 37 | 37 | 36 | 27 | 22 | 22 | 22 | 13 | 12 | 12 | 25 | 0 | 16 | 15 | 46 | 46 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | off | off | off | off | off | glassy | cross-off | off | off | off | off | off | off | cross-off | cross-off | off | off | off | cross-off | off | off | off | off | |
High Tide | 1:36AM0.48m | 2:32PM0.58m | 2:15AM0.43m | 3:08PM0.64m | 2:53AM0.38m | |||||||||||||||||||
Low Tide | 7:36PM0.12m | 7:41AM-0.03m | 8:32PM0.11m | 8:06AM-0.04m | 9:23PM0.10m | 8:32AM-0.04m | ||||||||||||||||||
 |  | |  | |  | | | | | | | | | | |  | | | | | | | | |
 | — | — | — | — | 5:58 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — |
 | 6:49 | — | — | — | — | — | — | — | 6:49 | — | — | — | — | — | — | — | 6:50 | — | — | — | — | — | — | 6:50 |
1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 23 | 23 | 23 | 22 | 24 | 25 | 26 | 25 | 23 | 23 | 22 | 22 | 23 | 25 | 25 | 25 | 23 | 22 | 22 | 22 | 23 | 25 | 25 |
26 | 23 | 23 | 24 | 23 | 25 | 27 | 28 | 25 | 22 | 22 | 21 | 21 | 22 | 24 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 25 | 24 | |
Swell 1 Height (m) Direction Period (s) | 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 | NW 13 | NW 12 | NNW 12 | NNW 12 | NNW 12 |
 kJ | 85 | 84 | 84 | 44 | 42 | 41 | 39 | 37 | 37 | 37 | 36 | 22 | 43 | 42 | 39 | 50 | 49 | 46 | 44 | 41 | 39 | 57 | 56 | 53 |
Swell 2 Height (m) Direction Period (s) | NE 7 | NNE 7 | NW 10 | NW 10 | NNW 10 | NNW 10 | SE 5 | SE 5 | SSE 5 | SE 5 | NW 13 | NW 13 | SW 12 | SW 12 | SW 12 | SSW 12 | SSW 11 | ESE 5 | ESE 6 | SE 6 | SE 6 | ESE 5 | S 16 | S 16 |
| kJ | 12 | 9 | 17 | 16 | 10 | 10 | 4 | 3 | 2 | 4 | 28 | 27 | 22 | 22 | 22 | 13 | 12 | 3 | 3 | 8 | 5 | 2 | 46 | 46 |
Swell 3 Height (m) Direction Period (s) | NW 11 | NW 11 | NNE 6 | ESE 5 | SE 5 | SE 5 | NNW 10 | NNE 5 | NNE 7 | N 8 | NNE 8 | SE 5 | SE 5 | ESE 5 | SE 5 | SE 5 | SE 5 | SSW 11 | S 18 | NNE 4 | SSW 13 | SSW 12 | NNE 6 | NNE 6 |
| kJ | 29 | 18 | 8 | 2 | 4 | 4 | 10 | 2 | 5 | 4 | 6 | 5 | 4 | 2 | 1 | 1 | 1 | 12 | 25 | 2 | 16 | 15 | 3 | 6 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 5 | E 5 | E 5 | E 5 | E 5 | ESE 5 | ESE 5 | E 5 | E 7 | E 5 | — | NNE 5 | NNE 5 | NNE 2 | NNE 3 | NNE 4 | NNE 4 | E 6 | E 5 | E 5 | E 5 | E 6 |
| kJ | 130 | 126 | 39 | 62 | 60 | 60 | 70 | 29 | 38 | 53 | 106 | 62 | — | 2 | 2 | 1 | 10 | 13 | 6 | 101 | 74 | 49 | 43 | 144 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 4 | 12 | 12 | 4 | 4 | 4 | 4 | 174 | 17 | 17 | 16 | 16 | 17 | 17 | 13 | 17 | 17 | 13 | 13 | 4 | 4 | 15 | 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
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