Snow-ForecastSnow-ForecastMountain-ForecastMountain-ForecastTide-ForecastTide-ForecastWeather-ForecastWeather-Forecast
Search by country, region, or break
Search by country, region, or break

Quick Links

Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 7 am Thursday 20 Nov 2025 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
26.0° C
 (Which is normal for this time of year)

How big are the waves at Ammonias today?

The current surf forecast for Ammonias at 10AM is: 2.0m 8s primary swell from a East direction and 0.7m 9s secondary swell from a Southeast direction (forecast issued at 07:00am November 20). An open ocean swell of 0.9m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (HST) & DateWave HeightWave Period
Morning (20 Nov)6.5ft (2.0m)8s
Afternoon (20 Nov)6ft (1.9m)8s
Evening (20 Nov)7ft (2.1m)8s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Thursday
20
Friday
21
Saturday
22
Sun
23
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)
1
0
0
0
0
0
0
0
0
0
0
0
1
1
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2
E
2
E
2
E
1.9
ENE
2
ENE
2.1
ENE
2.1
ENE
1.9
ENE
1.8
ENE
1.7
ENE
1.6
ENE
1.6
ENE
1.7
ENE
1.7
ENE
1.5
E
1.4
ENE
1.4
ENE
1.5
ENE
1.5
ENE
1.5
ENE
1.3
ENE
1.2
ENE
1.2
ENE
1.1
ENE
Period(s) (?)888888888888888888888888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)463471471427426469481416394373341341376366301264270280280280235202202171
Wind
(km/h)
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
20
ENE
20
E
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
E
15
E
15
ENE
15
E
10
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
4:00AM
0.68
2:49PM
0.23
4:33AM
0.68
3:16PM
0.22
5:10AM
0.67
3:41PM
0.20
Low Tide
/ height (m)
11:15AM
0.18
8:43PM
-0.01
11:59AM
0.18
9:14PM
0.00
12:49PM
0.18
9:46PM
0.02
Thursday
20
Friday
21
Saturday
22
Sun
23
Sunrise-6:52-------6:52-------6:52------
Sunset----5:52-------5:52-------5:52---
thunderstorm
clear
part cloud
cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
mod rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
rain showers
clear
part cloud
part cloud
clear
clear
clear
clear
clear
Rain (mm)
1---1133652221-1--------
Temp. °C242425252424242423232425252424242424252525242423
Feels °C (?)242324242323242523232426262425252424252526252524
  • 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

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.
Ben Mondy

Quiksilver Teams Up With PrimaLoft® For World’s First Thermal Layering System for a Wetsuit.

Feel that? If you are in the northern hemisphere, you will have had that first bite of winter. The lick of a frost, the chill of a cold offshore breeze and the sound of winter swells pounding the shores. If you are near the mountains, your favourite jackets, gloves, and footwear might get dusted off and prepped for battle. And in that beautiful Venn diagram, you will find PrimaLoft. They have spent over 40 years developing innovative insulations that have powered your warmest winter gear. In t

Read more

Read more

Discover more articles and updates in the Greenroom.

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

Nearest locationNearest
Nearest locationNearest
Nearest locationNearest