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Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 7 pm Tuesday 17 Mar 2026 HST
Forecast update in hr  min  s Forecast update imminent
Ammonias surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Ammonias sea temperature is
24.6° C
 (Which is slightly warmer than usual)

How big are the waves at Ammonias today?

The current surf forecast for Ammonias at 3AM is: 0.7m 16s primary swell from a South direction (forecast issued at 07:00pm March 17). An open ocean swell of 1.5m 13s is not directed at the surf break. The wind direction is predicted to be glassy and the swell rating is 2.

Time (HST) & DateWave HeightWave Period
Morning (18 Mar)2.5ft (0.8m)16s
Afternoon (18 Mar)3ft (0.9m)16s
Evening (18 Mar)3ft (0.9m)15s

Table - waves today at Ammonias. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM
Rating
(10 max)
0
1
0
2
2
1
1
0
0
1
1
0
1
1
0
0
0
1
1
1
1
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.9
NNW
0.6
S
0.6
S
0.7
S
0.7
S
0.8
S
0.8
S
0.8
S
0.9
S
0.9
S
0.9
S
0.9
S
0.9
S
0.9
S
0.9
S
0.9
S
0.9
S
0.8
S
0.8
S
0.8
S
0.8
S
0.8
S
0.8
S
0.7
S
Period(s) (?)141616161616161615151514141414141413131313131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)0192188249251322322314381352343338333333329324306229222222222219215162
Wind
(km/h)
5
NE
5
NNE
5
ENE
5
E
5
ENE
5
E
10
ESE
10
SE
10
S
10
SSE
10
SSE
10
S
10
SSW
10
S
15
S
15
S
15
S
10
SSW
10
S
10
SSW
10
SSW
10
SSW
20
SSW
20
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
glassglasscross-
on		glassglasscross-
on		ononcross-
on		ononcross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross
High Tide
/ height (m)
3:07PM
0.36
3:17AM
0.49
3:48PM
0.42
3:44AM
0.44
4:31PM
0.48
4:10AM
0.38
Low Tide
/ height (m)
8:50PM
-0.01
9:35AM
-0.03
9:38PM
0.02
9:59AM
-0.06
10:30PM
0.05
10:24AM
-0.08
Tuesday
17
Wednesday
18
Thursday
19
Friday
20
Sunrise-----6:43-------6:41-------6:41--
Sunset6:46-------6:46-------6:47-------
light rain
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
cloud
cloud
cloud
thunderstorm
thunderstorm
clear
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
cloud
thunderstorm
thunderstorm
Rain (mm)
1----------11--1211---11
Temp. °C222222222222232424232323232324252524242323242525
Feels °C (?)242424242424242525252525252525252626262525262525
  • 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

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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 Ammonias 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 Ammonias at:
surf-forecast.com

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