Surf Forecast Surf Report
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Grandma's surf break
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Grandma's surf Forecast / HAW – Maui / USA

12 Day Weather and Surf, issued 1 am Friday 29 Mar 2024 HST
Forecast update in  hr  min  s 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 24.3°C (Statistics for 29 Mar 1981-2005 - mean: 24.2 °C max: 25.0 °C min: 23.3 °C)
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
<span class="translation_missing" title="translation missing: en.leaflet.map_placeholder_alt">Map Placeholder Alt</span>
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 24.3°C (Statistics for 29 Mar 1981-2005 - mean: 24.2 °C max: 25.0 °C min: 23.3 °C)


Best Forecast Surf Conditions for Grandma's this week:

The surf forecast for Grandma's over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Mar 30) at 2PM. The primary swell is predicted to be 0.4m and 16s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Grandma's in the next 12 days are 0.6m 17s and forecast to arrive on Monday (Apr 01) at 2PM. Winds are predicted to be glassy at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 7s period and expected on Thursday (Apr 04) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Sat 30th Mar)1.5ft (0.4m) 16s
Best Surf 2PM (Sat 30th Mar)1.5ft (0.4m) 16s
Most Powerful 2PM (Mon 1st Apr)2ft (0.6m) 17s

Table - best surf conditions forecast for Grandma's over the next 12 days.

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Quick surf report for Grandma's:

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Updates in  hr  min  s Update imminent
Friday
29
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.4
SE
0.2
SSE
0.2
SSW
0.2
SSW
0.4
SW
0.4
SW
0.4
SW
0.4
SSW
0.5
SW
0.4
SW
0.6
SSW
0.6
SSW
0.6
SSW
0.6
SSW
0.4
SSW
0.4
SSW
0.4
SSW
0.4
SW
0.4
SW
0.4
SW
0.4
SW
0.3
SSE
0.2
SSW
0.3
SSW
0.4
SSW
0.4
SSW
0.3
SSW
0.5
SSW
0.4
SSW
0.3
SSW
0.4
SSW
0.3
SSW
0.2
SSW
0.3
SSW
0.3
NW
0.2
SSW
Period(s) (?)641717161616161818161616151414141413131361213181813161615141413131412
Wave
Graph
(?)Metric surfscale
Energy (?)132302865636395152791711691641468280805044444461534121120321449742813818353515
Wind
(km/h)
10
NNE
10
NE
10
NNE
5
NNE
15
NNE
10
NE
5
WSW
10
N
5
NNE
5
W
5
N
0
NE
5
NW
10
SSW
5
WSW
5
S
10
SSE
5
ESE
5
SSE
10
NE
10
NE
5
ENE
20
ENE
15
NE
10
NE
10
NE
15
NNE
5
NNE
20
E
5
NNE
5
SW
5
SSE
0
W
5
WSW
5
S
5
N
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offoffglassoffoffglasscross-
off
offcross-
on
glassglasscrossonglassglasscrosscross-
off
glassoffoffglasscross-
off
offoffoffoffglasscross-
off
offoncross-
on
glassonglassglass
High Tide
/ height (m)
7:31PM
0.61
6:52AM
0.23
8:34PM
0.62
8:21AM
0.20
9:44PM
0.63
10:15AM
0.19
10:51PM
0.65
11:35AM
0.23
11:50PM
0.68
12:34PM
0.29
12:42AM
0.69
1:23PM
0.36
1:29AM
0.68
2:09PM
0.45
2:13AM
0.65
2:53PM
0.53
2:55AM
0.60
3:37PM
0.61
3:36AM
0.53
4:20PM
0.67
4:17AM
0.45
5:05PM
0.71
4:58AM
0.37
Low Tide
/ height (m)
12:00PM
0.02
2:23AM
0.16
12:42PM
0.04
3:56AM
0.15
1:37PM
0.05
5:27AM
0.12
2:47PM
0.07
6:22AM
0.09
4:07PM
0.07
6:59AM
0.05
5:23PM
0.05
7:31AM
0.01
6:32PM
0.03
8:02AM
-0.02
7:35PM
0.02
8:32AM
-0.05
8:34PM
0.01
9:02AM
-0.07
9:31PM
0.02
9:33AM
-0.08
10:28PM
0.03
10:04AM
-0.08
11:26PM
0.05
Friday
29
Saturday
30
Sunday
31
Monday
01
Tuesday
02
Wednesday
03
Thursday
04
Friday
05
Saturday
06
Sunday
07
Monday
08
Tuesday
09
Sunrise6:20--6:20--6:18--6:18--6:16--6:16--6:16--6:15--6:13--6:13--6:11--6:11--
Sunset-6:39--6:39--6:39--6:40--6:40--6:40--6:42--6:42--6:42--6:42--6:43--6:43-
part cloudpart cloudclearclearpart cloudpart cloudclearpart cloudpart cloudclearpart cloudclearpart cloudcloudcloudpart cloudpart cloudpart cloudpart cloudpart cloudclearpart cloudpart cloudclearclearpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloudpart cloud
Rain (mm)
------------------------------------
Temp. °C242522242422242423242523252524252525252522242623242422242522242424242423
Feels °C (?)242622252422252625252625262727272727272621252522242420252522252526262626

Short Range Forecast: Mostly dry. Warm (max 25°C on Fri afternoon, min 20°C on Fri night). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 25°C on Mon afternoon, min 22°C on Mon morning). Wind will be generally light.

Days 6-9 Weather Summary Mostly dry. Warm (max 26°C on Fri afternoon, min 21°C on Thu night). Wind will be generally light.

Long Range Forecast: Mostly dry. Warm (max 25°C on Sun afternoon, min 21°C on Sun night). Wind will be generally light.

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.


Information about the Grandma's Surf forecast

The above surf forecast table for Grandma's provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Grandma's can be found by selecting the local surf guide option on the grey menu. Our Grandma's surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Grandma's) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Grandma's may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a vacation in Maui? If you are looking for accommodation near Grandma's, camping, hotels and condos and appartments in Maui, consider staying in Kihei which is 10 km (6 miles) away. Other places in and around Maui where you can find information about places to rent, and car hire include Wailuku which is 12 km (7 miles) away, Kahului, Lanai - Lanai and Kaunakakai - Molokai.

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