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Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 7 pm Tuesday 20 Jan 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 12AM is: 0.7m 7s primary swell from a East direction (forecast issued at 07:00pm January 20). An open ocean swell of 0.7m 13s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & DateWave HeightWave Period
Morning (21 Jan)1.5ft (0.5m)7s
Afternoon (21 Jan)1.5ft (0.5m)8s
Evening (21 Jan)1.5ft (0.5m)8s

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

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
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
0
1
0
0
0
0
0
0
0
0
0
1
1
1
0
0
1
1
1
1
1
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.7
E
0.7
E
0.7
E
0.6
E
0.6
E
0.4
SE
0.5
E
0.5
E
0.5
E
0.6
E
0.5
E
0.2
SSW
0.8
ENE
0.8
ENE
0.8
ENE
0.8
ENE
0.5
E
0.8
ENE
0.7
ENE
0.6
ENE
0.6
ENE
0.6
ENE
0.6
ENE
0.6
E
Period(s) (?)7777798888715777777888888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)495152393927282828412721706268612661584444444542
Wind
(km/h)
15
SSW
15
SW
15
NNW
30
N
30
N
15
NNE
20
NNE
15
NE
20
NNE
15
NNE
15
NNE
15
NNE
15
NNE
15
N
15
NNE
15
NE
10
NE
15
NNE
10
NNE
10
N
10
NNE
15
NNE
15
ENE
10
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		crossoffcross-
off		cross-
off		cross-
off		cross-
off		crosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
off		crosscrosscross-
off		cross-
off		cross-
off		cross-
off		cross-
off		cross-
on		cross-
on
High Tide
/ height (m)
4:45PM
0.24
5:27AM
0.61
5:39PM
0.27
5:53AM
0.55
6:43PM
0.30
6:17AM
0.48
Low Tide
/ height (m)
10:16PM
-0.01
12:21PM
0.06
10:58PM
0.05
12:50PM
0.04
11:49PM
0.12
1:20PM
0.02
Tuesday
20
Wednesday
21
Thursday
22
Friday
23
Sunrise-----7:18-------7:18-------7:16--
Sunset6:17-------6:19-------6:19-------
part cloud
part cloud
rain showers
light rain
cloud
cloud
cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
cloud
part cloud
cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
Rain (mm)
--22--------------------
Temp. °C242322192020202222212020202022222221202020192122
Feels °C (?)232322141518182120201819191921212120191920182021
  • 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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