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Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 1 am Thursday 12 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
24.9° C
 (Which is slightly warmer than usual)

How big are the waves at Ammonias today?

The current surf forecast for Ammonias at 7AM is: 0.8m 8s primary swell from a East-northeast direction and 0.8m 6s secondary swell from a Southwest direction (forecast issued at 01:00am March 12). An open ocean swell of 0.9m 10s is not directed at the surf break. The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (12 Mar)2.5ft (0.8m)8s
Afternoon (12 Mar)2.5ft (0.8m)8s
Evening (12 Mar)4.5ft (1.4m)5s

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

Updates in  hr  min  s Forecast update imminent 
16 DaysHourly
Print Table
Thursday
12
Friday
13
Saturday
14
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
Rating
(10 max)
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
1
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.3
SW
1.4
SSW
0.9
ENE
0.8
ENE
0.8
ENE
1.3
SSW
0.8
ENE
1.4
SSW
0.7
ENE
1.9
S
2.2
S
2.5
S
3
SSW
3.5
SSW
3
SSW
3
SSW
3
SW
3
SW
2.5
SW
2.5
SW
2.5
SW
3
SW
3
SW
3
WSW
Period(s) (?)768885858667788887777888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)14014610180808281106672314026279631280131095389185977767976390210461122
Wind
(km/h)
20
SW
15
SW
15
SW
15
SW
25
SSW
25
SSW
25
S
25
S
25
S
35
S
45
SSW
45
S
35
SSW
45
SSW
45
SSW
40
SW
35
SW
40
WSW
35
WSW
35
SW
35
WSW
40
SW
35
SW
35
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscrosscrosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscross-
on		crosscrosscrosscrosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscross
High Tide
/ height (m)
11:56PM
0.47
11:38AM
0.12
12:46AM
0.50
12:34PM
0.16
1:24AM
0.52
1:14PM
0.20
Low Tide
/ height (m)
9:04AM
0.12
4:18PM
0.05
8:41AM
0.11
5:34PM
0.03
8:38AM
0.10
6:30PM
0.01
Thursday
12
Friday
13
Saturday
14
Sunrise---6:48-------6:48-------6:47----
Sunset------6:45-------6:45-------6:45-
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
Rain (mm)
111124161518444032985752111--
Temp. °C232323232523232221222222222323232223232323242424
Feels °C (?)232324242422222120191717191919201920202019202121
  • 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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