Ammonias surfForecast / HAW – Kaua'i / USA

information circle48hr Weather and Surf, issued 7 am Sunday 17 May 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
24.7° C
(Which is normal for this time of year)

How big are the waves at Ammonias today?

The current surf forecast for Ammonias at 12PM is: 1.4m 8s primary swell from a East-northeast direction and 0.9m 10s secondary swell from a Southeast direction, 0.8m 15s secondary swell from a South-southwest direction (forecast issued at 07:00am May 17). The wind direction is predicted to be cross-shore.

Time (HST) & DateWave HeightWave Period
Morning (17 May)4.5ft (1.4m)8s
Afternoon (17 May)2.5ft (0.8m)15s
Evening (17 May)2.5ft (0.8m)15s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 12mm), heaviest on Sun night. Warm (max 25°C on Sun morning, min 23°C on Sun night). Wind will be generally light.

Sunday
17
Monday
18
Tuesday
19
Wed
20
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
5 PM
8 PM
11 PM
2 AM
Rating
(10 max)
2
1
1
1
1
2
0
0
0
0
0
0
0
1
1
1
0
0
0
0
1
1
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.5
ENE
8
1.4
ENE
8
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
1.6
ENE
8
1.8
ENE
8
1.8
ENE
8
1.8
ENE
8
1.8
ENE
8
1.9
ENE
8
1.8
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
8
1.6
ENE
8
1.5
ENE
8
0.9
SSW
17
0.9
SSW
15
0.8
SSW
15
0.8
SSW
16
1.8
ENE
7
Wave Graph
Metric surfscale
Energy kJ
298
264
264
270
249
249
242
344
408
394
394
394
427
384
353
302
253
280
240
433
305
252
273
328
Wind (km/h)
15
NE
20
NE
20
NE
20
NE
20
ENE
15
NE
20
ENE
20
E
20
E
20
E
20
ENE
25
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
25
ENE
25
ENE
25
ENE
25
ENE
25
ENE
cross-off
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross
cross
cross
cross
High Tide
3:09AM0.17m
4:56PM0.72m
3:55AM0.15m
5:47PM0.71m
4:48AM0.13m
6:40PM0.67m
Low Tide
9:06AM-0.15m
00:21AM0.09m
9:49AM-0.13m
1:27AM0.09m
10:35AM-0.09m
clear
clear
clear
clear
clear
clear
clear
rain showers
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
clear
clear
clear
thunderstorm
thunderstorm
clear
thunderstorm
rain showers
clear
rain showers
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:56
5:56
5:56
5:56
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:10
7:10
1
2
1
1
1
1
1
1
1
1
1
Temp °C
23
24
25
25
25
24
24
23
23
24
24
24
24
23
23
23
23
24
25
25
24
23
23
23
24
24
25
25
26
25
25
23
23
24
24
23
23
23
23
23
23
24
25
25
23
23
22
22
Swell 1
Height (m)
Direction
Period (s)
0.6
SE
9
1
SE
10
0.9
SE
10
0.9
SE
9
1.3
ENE
8
1.3
ENE
8
0.8
SSW
15
1.6
ENE
8
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.8
SSW
14
0.7
SSW
14
0.7
SSW
14
0.7
SSW
13
0.7
SSW
13
0.7
SSW
14
0.8
SSW
14
0.8
SSW
14
0.9
SSW
17
0.9
SSW
15
0.8
SSW
15
0.8
SSW
16
0.8
SSW
14
Energy kJ
70
188
154
128
237
223
242
344
236
233
233
229
166
161
158
158
161
226
229
433
305
249
273
239
Swell 2
Height (m)
Direction
Period (s)
0.5
SSW
16
0.6
SSW
14
0.8
SSW
15
0.8
SSW
15
0.8
SSW
15
0.9
SE
11
0.6
SSE
8
0.8
SSW
14
0.6
SSE
8
0.6
SSE
8
0.7
SE
10
0.6
SSW
19
0.5
SE
10
0.5
SE
10
0.5
SE
10
0.4
SSW
17
0.5
S
17
0.6
SSW
18
0.5
SSW
18
0.4
SE
9
0.4
SE
7
0.5
SE
8
0.4
SSE
8
0.4
SSE
7
Energy kJ
147
138
249
249
249
163
37
239
39
39
102
251
49
48
48
92
149
207
176
23
13
31
22
20
Swell 3
Height (m)
Direction
Period (s)
0.5
SW
14
0.5
S
16
0.4
SSE
11
0.4
SSE
11
0.7
SE
8
0.8
SSW
15
0.6
SSE
10
0.6
SSE
8
0.4
SSE
10
0.4
SSE
10
0.6
SSW
19
0.5
SE
10
0.5
SSW
19
0.4
SSE
7
0.4
SE
7
0.4
SSE
10
0.5
SE
7
0.4
SE
10
0.4
SE
10
0.4
SE
7
0.4
SE
9
0.4
SE
9
0.4
NW
11
0.4
NNW
12
Energy kJ
100
132
48
48
65
249
72
37
40
40
251
49
212
21
13
38
23
24
23
13
22
22
30
55
Wind waves
Height (m)
Direction
Period (s)
1.5
ENE
8
1.4
ENE
8
1.4
ENE
8
1.4
ENE
8
1.3
ENE
8
1.8
ENE
8
1.8
ENE
8
1.8
ENE
8
1.8
ENE
8
1.9
ENE
8
1.8
ENE
8
1.7
ENE
8
1.6
ENE
8
1.5
ENE
8
1.6
ENE
8
1.5
ENE
8
1.5
ENE
7
1.6
ENE
7
1.6
ENE
7
1.6
ENE
6
1.8
ENE
7
Energy kJ
298
264
264
270
237
408
394
394
394
427
384
353
302
253
280
240
228
219
252
218
328
Nearest Offshore or Glassy
Rating
(10 max)
3
2
2
3
2
2
2
2
2
2
2
3
3
2
2
3
2
2
3
2
2
3
3
2
Distance (km)
1
14
16
31
31
16
16
16
31
31
31
31
31
16
16
16
16
16
31
31
16
16
16
38
Best forecast wave conditions in Kaua'i
Rating
(10 max)
3
3
3
3
2
2
2
4
2
2
2
3
3
3
3
3
3
3
3
2
2
3
3
2
Best forecast wave conditions in United States
Rating
(10 max)
8
6
4
4
5
7
5
4
5
4
4
3
4
4
4
5
4
3
3
3
4
4
5
4
Header Global
Rating
(10 max)
8
6
4
4
5
7
5
4
5
4
4
4
4
4
4
4
4
4
4
4
5
4
4
5
  • 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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