Surf Forecasts:
How big are the waves at Ammonias today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 3.5ft (1.0m), 17s period with SSW swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 3.5ft (1.0m), 17s period with SSW swell.
- Evening surf: Evening surf (18 Sep, local time) - 3.5ft (1.0m), 16s period with SSW swell.
The current surf forecast for Ammonias at 4AM is: 1.0m 18s primary swell from a South-southwest direction and 0.2m 10s secondary swell from a South-southeast direction, 2.0m 8s secondary swell from a East-northeast direction (forecast issued at 07:00pm September 17). The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 3.5ft (1.0m) | 17s |
| Afternoon (18 Sep) | 3.5ft (1.0m) | 17s |
| Evening (18 Sep) | 3.5ft (1.0m) | 16s |
Table - waves today at Ammonias. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 7mm), mostly falling on Thu night. Warm (max 27°C on Fri afternoon, min 25°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Thu 17 | Friday 18 | Saturday 19 | |||||||||||||||||
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 | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | SSW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | ENE 7 | SSW 16 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 491 | 587 | 659 | 651 | 637 | 629 | 608 | 587 | 566 | 559 | 539 | 532 | 475 | 463 | 367 | 377 | 420 | 394 | 427 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross-on | cross | cross | cross | cross-on |
High Tide | 10:23AM0.54m | 9:42PM0.19m | 11:33AM0.55m | ||||||||||||||||
Low Tide | 00:58AM0.13m | 9:18PM0.19m | 2:25AM0.15m | 8:14PM0.19m | |||||||||||||||
 |  | | | | | |  | |  | | |  |  | | | | | | |
 | — | — | — | — | 6:24 | — | — | — | — | — | — | — | 6:24 | — | — | — | — | — | — |
 | 6:37 | — | — | — | — | — | — | — | 6:37 | — | — | — | — | — | — | — | 6:36 | — | — |
mm | 1 | 1 | 1 | 1 | 1 | 1 | 1 | — | — | — | 1 | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 25 | 25 | 25 | 25 | 26 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 26 | 27 | 26 | 25 | 25 |
Feels °C | 26 | 25 | 26 | 26 | 26 | 25 | 26 | 27 | 27 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 25 | 26 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 17 | SSW 18 | SSW 18 | SSW 18 | SSW 17 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 16 | SSW 16 | SW 15 |
| kJ | 326 | 587 | 659 | 651 | 637 | 629 | 608 | 587 | 566 | 559 | 539 | 532 | 475 | 463 | 367 | 377 | 382 | 382 | 239 |
Swell 2 Height (m) Direction Period (s) | SSW 19 | SW 10 | SSE 10 | SSE 10 | SSE 10 | SSE 10 | WSW 9 | SSE 10 | SSE 9 | SE 9 | SE 8 | SSE 7 | SSE 7 | SSE 7 | SSE 8 | SE 8 | S 18 | SSE 8 | S 16 |
| kJ | 214 | 15 | 10 | 10 | 10 | 9 | 8 | 9 | 8 | 20 | 35 | 32 | 31 | 20 | 40 | 32 | 160 | 43 | 264 |
Swell 3 Height (m) Direction Period (s) | SW 10 | SSE 10 | WSW 10 | WSW 9 | W 9 | WSW 9 | NW 10 | S 21 | S 21 | S 21 | SSW 19 | S 20 | S 20 | SE 9 | S 18 | S 18 | SE 7 | S 18 | SE 9 |
| kJ | 15 | 10 | 9 | 9 | 2 | 8 | 4 | 36 | 36 | 36 | 72 | 67 | 67 | 19 | 162 | 162 | 24 | 99 | 39 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
| kJ | 491 | 468 | 471 | 451 | 439 | 411 | 450 | 419 | 365 | 382 | 371 | 356 | 344 | 335 | 365 | 371 | 420 | 394 | 427 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 31 | 31 | 31 | 31 | 16 | 38 | 46 | 38 | 118 | 16 | 16 | 16 | 16 | 16 | 33 | 31 | 31 | 16 | 16 |
Best forecast wave conditions in Kaua'i | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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