Surf Forecasts:
How big are the waves at Waimanalo today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 6.5ft (2.0m), 8s period with ENE swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 6ft (1.9m), 7s period with ENE swell.
- Evening surf: Evening surf (18 Sep, local time) - 6ft (1.9m), 7s period with ENE swell.
The current surf forecast for Waimanalo at 12PM is: 2.0m 8s primary swell from a East-northeast direction (forecast issued at 07:00am September 18). An open ocean swell of 0.4m 17s is not directed at the surf break, a second open ocean swell of 0.1m 10s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 6.5ft (2.0m) | 8s |
| Afternoon (18 Sep) | 6ft (1.9m) | 7s |
| Evening (18 Sep) | 6ft (1.9m) | 7s |
Table - waves today at Waimanalo. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Fri morning, min 25°C on Sun night). Mainly strong winds. | |||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 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 | |
Swell Height Map |  |  |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | E 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 450 | 449 | 472 | 416 | 362 | 405 | 416 | 445 | 465 | 461 | 473 | 509 | 509 | 509 | 475 | 451 | 447 | 373 | 327 | 327 | 332 | 366 | 377 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | cross-on |
High Tide | 10:52AM0.51m | 11:47AM0.54m | 12:22PM0.57m | ||||||||||||||||||||
Low Tide | 1:18AM0.13m | 3:40AM0.12m | 7:51PM0.20m | ||||||||||||||||||||
 |  | | | | |  | | | | |  | | | | | | | | | | | | |
 | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — | — | 6:18 | — | — | — | — | — | — |
 | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:29 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 |
Feels °C | 25 | 26 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 23 | 23 | 24 | 24 | 25 | 24 | 24 | 24 | 23 | 23 | 24 | 22 | 22 |
Swell 1 Height (m) Direction Period (s) | SW 17 | SSW 17 | SSW 17 | SW 17 | SW 17 | SSW 16 | SSW 16 | SSW 15 | SSW 16 | SSW 15 | SW 16 | SSW 16 | SW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | S 15 | SSW 15 |
| kJ | 76 | 119 | 116 | 74 | 70 | 107 | 104 | 44 | 99 | 42 | 61 | 48 | 62 | 48 | 86 | 86 | 86 | 85 | 79 | 74 | 74 | 115 | 74 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | S 10 | S 10 | SE 9 | SSE 8 | NW 9 | S 9 | SSW 16 | SSE 8 | SSW 16 | S 18 | S 18 | S 18 | S 18 | NW 10 | S 13 | SSW 13 | N 11 | ESE 10 | N 11 | N 11 | N 11 | N 11 |
| kJ | 31 | 2 | 2 | 3 | 6 | 3 | 2 | 26 | 6 | 26 | 25 | 25 | 25 | 25 | 4 | 3 | 17 | 3 | 36 | 2 | 9 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | S 10 | NW 11 | NW 10 | S 21 | NW 10 | S 21 | NW 9 | S 19 | S 20 | S 19 | S 11 | S 13 | N 13 | NW 10 | N 12 | N 12 | SE 8 | S 8 | N 11 | S 8 | NW 9 | NW 9 | NW 8 |
| kJ | 2 | 5 | 4 | 9 | 4 | 9 | 3 | 29 | 7 | 7 | 2 | 3 | 3 | 4 | 3 | 3 | 3 | 1 | 2 | 1 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 8 | E 7 | E 7 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | E 7 |
| kJ | 450 | 449 | 472 | 416 | 362 | 405 | 416 | 445 | 465 | 461 | 473 | 509 | 509 | 509 | 475 | 451 | 447 | 373 | 327 | 327 | 332 | 366 | 377 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 45 | 44 | 50 | 241 | 58 | 50 | 50 | 50 | 50 | 50 | 51 | 52 | 50 | 50 | 44 | 44 | 44 | 44 | 50 | 52 | 50 | 50 | 116 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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