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Surf Forecasts:

Grandma's surf break

Grandma's surfForecast / HAW – Maui / USA

information circle48hr Weather and Surf, issued 1 pm Thursday 13 Nov 2025 HST
Forecast 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
26.3° C
 (Which is normal for this time of year)

How big are the waves at Grandma's today?

The current surf forecast for Grandma's at 6PM is: 0.5m 13s primary swell from a Northwest direction and 0.5m 13s secondary swell from a South direction (forecast issued at 01:00pm November 13). An open ocean swell of 0.6m 10s is not directed at the surf break, a second open ocean swell of 1.9m 7s is not directed at the surf break. The wind direction is predicted to be offshore.

Time (HST) & DateWave HeightWave Period
Morning (13 Nov)1.5ft (0.5m)14s
Afternoon (13 Nov)1.5ft (0.5m)14s
Evening (13 Nov)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 
12 DaysHourly
Print Table
Thursday
13
Friday
14
Saturday
15
Sunday
16
11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM
Rating
(10 max)
1
1
1
0
1
1
1
1
0
1
1
0
0
0
0
0
1
1
1
1
0
0
1
1
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.5
NW
0.5
NW
0.5
S
0.4
S
0.4
S
0.4
S
0.4
SSW
0.4
S
0.4
S
0.4
S
0.4
S
0.4
S
0.3
S
0.3
S
0.3
S
0.4
S
0.4
S
0.3
SSW
0.3
NW
0.3
NW
0.3
S
0.4
S
0.4
NW
0.4
NW
Period(s) (?)141413131212121212121212121212111115171611111615
Wave
Graph
(?)Metric surfscale
Energy kJ (?)979188514847504646454544252524403943444221378577
Wind
(km/h)
10
NE
15
NE
20
NE
15
NE
10
NE
10
NNE
10
NE
10
NNE
15
NNE
15
NNE
15
NE
15
NNE
15
NNE
10
NE
10
NE
10
NE
10
N
5
NE
10
NNE
15
NNE
10
NE
5
N
5
NNE
10
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offoffoffoffoffoffoffoffoffoffoffoffcross-
off		offoffoffcross-
off		offoffoffoffcross-
off		cross-
off		off
High Tide
/ height (m)
11:05AM
0.61
12:25AM
0.47
11:54AM
0.55
1:09AM
0.55
12:39PM
0.50
1:49AM
0.62
Low Tide
/ height (m)
5:56PM
0.06
5:35AM
0.23
6:22PM
0.05
6:49AM
0.22
6:48PM
0.03
7:52AM
0.20
Thursday
13
Friday
14
Saturday
15
Sunday
16
Sunrise-------6:35-------6:35-------6:35
Sunset--5:45-------5:45-------5:45-----
part cloud
part cloud
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C262625242424232426262524232222232626262423232324
Feels °C (?)272625242525242526262524232222242727272524252525
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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.

View detailed surf forecast for Grandma's at:
surf-forecast.com

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