Ammonias surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 7 pm Wednesday 18 Feb 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
24.5° C
(Which is slightly warmer than usual)


How big are the waves at Ammonias today?

The current surf forecast for Ammonias at 3AM is: 3.0m 9s primary swell from a East direction and 0.2m 12s secondary swell from a South-southwest direction (forecast issued at 07:00pm February 18). An open ocean swell of 0.4m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (19 Feb)10ft (3.0m)9s
Afternoon (19 Feb)8ft (2.5m)9s
Evening (19 Feb)8ft (2.5m)9s

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

Updates in  hr  min  s Forecast update imminent
Wednesday
18
Thursday
19
Friday
20
Saturday
21
5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
1
1
0
2
3
3
3
3
Swell
Height Map
Wave Height (m) & direction (?)
3
ENE
3
ENE
3
E
3.5
E
3
E
3
E
2.5
E
2.5
ENE
2.5
ENE
2.5
ENE
2.5
ENE
2.4
ENE
2.2
ENE
2.2
ENE
2.3
ENE
2.3
ENE
2.2
ENE
2.2
ENE
2.1
ENE
2.1
ENE
2
ENE
1.9
ENE
1.8
ENE
1.8
ENE
Period(s) (?)999999999999999999999999
Wave
Graph
(?)Metric surfscale
Energy kJ (?)14071535163618491764181712241203103710601037959796838909890820820745729666585516537
Wind
(km/h)
35
E
30
E
35
E
30
ESE
30
E
30
E
30
E
30
E
30
E
25
E
25
E
25
E
20
E
20
E
20
E
20
E
15
E
10
ESE
15
ENE
10
ENE
5
NE
5
SW
5
ESE
5
SSE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
cross-
on
crossglassglassglassglass
High Tide
/ height (m)
4:41PM
0.34
4:49AM
0.51
5:30PM
0.38
5:13AM
0.45
6:25PM
0.41
5:34AM
0.37
Low Tide
/ height (m)
10:18PM
0.02
11:20AM
-0.01
11:08PM
0.07
11:47AM
-0.03
12:07AM
0.14
12:16PM
-0.04
Wednesday
18
Thursday
19
Friday
20
Saturday
21
Sunrise-----7:05-------7:05-------7:03--
Sunset6:36-------6:36-------6:37-------
clear
part cloud
rain showers
rain showers
rain showers
part cloud
light rain
part cloud
part cloud
part cloud
part cloud
light rain
light rain
light rain
thunderstorm
thunderstorm
light rain
light rain
light rain
thunderstorm
rain showers
rain showers
thunderstorm
rain showers
Rain (mm)
--111-1----1111235433111
Temp. °C232222222222222323222222222222222221202121212323
Feels °C (?)191818181919181920181919202021212121192223222424
  • 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

Latest Updates

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.


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