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Surf Forecasts:

Ammonias surfForecast / HAW – Kaua'i / USA

information circle12 Day Weather and Surf, issued 7 am Wednesday 19 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)

Best Forecast Surf Conditions for Ammonias this week:

The most powerful waves expected at Ammonias in the next 12 days are 2.3m 8s and forecast to arrive on Thursday (Nov 20) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 13s period and expected on Wednesday (Nov 19) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11PM (Thu 20th Nov)7.5ft (2.3m) 8s

Table - best surf conditions forecast for Ammonias over the next 12 days.

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table

Short Range Forecast Heavy rain (total 26mm), heaviest during Wed night. Warm (max 25°C on Wed morning, min 24°C on Wed morning). Mainly fresh winds.

Days 3-6 Weather Summary Moderate rain (total 15mm), heaviest on Sun night. Warm (max 25°C on Sat morning, min 23°C on Sat night). Wind will be generally light.

Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
1
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
1.7
ENE
1.9
E
2
E
2
E
2.2
ENE
2.2
ENE
1.8
E
1.6
ENE
1.3
E
1.3
ENE
1.3
ENE
1.1
ENE
1
ENE
1
ENE
0.6
E
0.6
E
1
ENE
0.6
SSE
0.7
SSE
0.7
SSE
1
E
Period(s) (?)67788888888888985101097
Wave
Graph
(?)Metric surfscale
Energy kJ (?)198335411463514542407336228216216176151151545149648976106
Wind
(km/h)
30
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
20
ENE
20
ENE
15
ENE
20
ENE
15
ENE
20
ENE
20
ENE
20
ENE
15
E
20
ENE
20
ENE
20
ENE
25
E
20
ENE
15
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		crosscrosscross-
on		crosscrosscross-
on		crosscross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on
High Tide
/ height (m)
2:22PM
0.25
4:00AM
0.68
2:49PM
0.23
4:33AM
0.68
3:16PM
0.22
5:10AM
0.67
3:41PM
0.20
5:50AM
0.65
4:07PM
0.19
6:34AM
0.63
4:49PM
0.18
7:21AM
0.61
6:42PM
0.17
Low Tide
/ height (m)
10:32AM
0.18
8:15PM
-0.01
11:15AM
0.18
8:43PM
-0.01
11:59AM
0.18
9:14PM
0.00
12:49PM
0.18
9:46PM
0.02
1:49PM
0.18
10:21PM
0.04
2:59PM
0.18
10:59PM
0.07
3:53PM
0.16
11:46PM
0.11
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
Monday
24
Tuesday
25
Sunrise6:50--6:52--6:52--6:52--6:54--6:54--6:54--
Sunset-5:52--5:52--5:52--5:52--5:52--5:52--5:52-
thunderstorm
rain showers
thunderstorm
rain showers
rain showers
rain showers
rain showers
clear
thunderstorm
part cloud
thunderstorm
thunderstorm
clear
rain showers
rain showers
rain showers
clear
rain showers
rain showers
rain showers
rain showers
Rain (mm)
3182281-1-13-152-3122
Temp. °C252524252524252524252524252524252524252524
Feels °C (?)232323242423252525252524252524252524242524
  • 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

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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

Information about the Ammonias Surf forecast

The above surf forecast table for Ammonias provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Ammonias can be found by selecting the local surf guide option on the grey menu. Our Ammonias surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Ammonias) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Ammonias may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Are you planning a vacation in Kaua'i? If you are looking for accommodation near Ammonias, camping, hotels and condos and appartments in Kaua'i, consider staying in Nawiliwili which is 2 km (1 miles) away. Alternatively, find information about places to stay and car hire in Lihue - Kauai which is 3 km (2 miles) away

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