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Surf Forecasts:

Grandma's surf break

Grandma's surfForecast / HAW – Maui / USA

information circle48hr Weather and Surf, issued 7 am Sunday 01 Feb 2026 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
25.4° C
 (Which is 1.1°C warmer than normal for this time of year)

How big are the waves at Grandma's today?

The current surf forecast for Grandma's at 1PM is: 0.7m 13s primary swell from a Northwest direction (forecast issued at 07:00am February 01). An open ocean swell of 0.4m 10s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (HST) & DateWave HeightWave Period
Morning (01 Feb)3ft (0.9m)13s
Afternoon (01 Feb)2.5ft (0.7m)13s
Evening (01 Feb)2ft (0.6m)12s

Table - waves today at Grandma's. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Sunday
01
Monday
02
Tuesday
03
Wed
04
5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM
Rating
(10 max)
2
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
0
1
3
3
3
3
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.1
NW
0.9
NW
0.8
NW
0.7
NW
0.7
NW
0.6
NW
0.6
NW
0.5
NW
0.4
NW
0.3
NW
0.4
NW
0.4
NW
0.6
NW
0.6
NW
1.4
WSW
0.9
NW
1.4
NW
1.1
W
0.9
W
0.8
W
2.2
NW
2.1
NW
2
NW
1.8
NW
Period(s) (?)13131313131212121220191817167141477915151514
Wave
Graph
(?)Metric surfscale
Energy kJ (?)386277231161158908767496313011717720818130175213188992083191516471273
Wind
(km/h)
0
SSW
5
SSW
10
SSW
15
SSW
15
SW
15
SSW
20
S
20
SSW
25
SSW
25
SSW
30
SSW
35
SW
30
SW
30
SW
30
SW
30
SW
20
SW
5
W
15
N
15
NNW
15
NNW
20
NNE
20
NNE
20
NNE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glasscross-
on		cross-
on		onononcross-
on		cross-
on		onononononononononglasscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		off
High Tide
/ height (m)
3:53AM
0.83
4:05PM
0.32
4:31AM
0.79
4:50PM
0.36
5:07AM
0.73
5:36PM
0.39
Low Tide
/ height (m)
10:46AM
0.01
9:17PM
-0.05
11:15AM
0.01
10:03PM
-0.02
11:42AM
0.01
10:50PM
0.03
Sunday
01
Monday
02
Tuesday
03
Wed
04
Sunrise-7:01-------7:01-------7:01------
Sunset----6:15-------6:16-------6:17---
clear
clear
clear
clear
clear
clear
clear
clear
clear
rain showers
rain showers
rain showers
rain showers
rain showers
part cloud
part cloud
rain showers
rain showers
part cloud
part cloud
clear
clear
clear
clear
Rain (mm)
---------11111--22------
Temp. °C232324242424232323242524242424242322232425212120
Feels °C (?)262525242525222322232321222222222225232424191817
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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