Surf Forecasts:
How big are the waves at Waimanalo today (19 Aug):
- Morning surf: Morning surf (19 Aug, local time) - 4ft (1.2m), 7s period with ENE swell.
- Afternoon surf: Afternoon surf (19 Aug, local time) - 4ft (1.2m), 8s period with ENE swell.
- Evening surf: Evening surf (19 Aug, local time) - 4ft (1.2m), 8s period with ENE swell.
The current surf forecast for Waimanalo at 10PM is: 0.9m 8s primary swell from a East direction and 0.9m 6s secondary swell from a Northeast direction (forecast issued at 01:00pm August 19). An open ocean swell of 0.2m 12s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Aug) | 4ft (1.2m) | 7s |
| Afternoon (19 Aug) | 4ft (1.2m) | 8s |
| Evening (19 Aug) | 4ft (1.2m) | 8s |
Table - waves today at Waimanalo. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Wed afternoon). Winds increasing (light winds from the ENE on Thu night, fresh winds from the ENE by Sat morning). | |||||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | |||||||||||||||||||
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) | E 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | NE 7 | ENE 7 | ENE 7 | NE 7 | ENE 7 | E 7 | ENE 7 | NE 7 | NNE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 89 | 149 | 188 | 183 | 102 | 102 | 78 | 78 | 63 | 91 | 138 | 138 | 119 | 73 | 52 | 37 | 47 | 54 | 86 | 117 | 124 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-on | on | cross-on |
High Tide | 10:23AM0.47m | 11:48AM0.51m | 12:32PM0.55m | ||||||||||||||||||
Low Tide | 1:15AM0.09m | 2:41AM0.09m | |||||||||||||||||||
 | | |  |  | | |  | | | | | | | | | | | | | | |
 | — | — | — | — | — | — | 6:09 | — | — | — | — | — | — | — | 6:11 | — | — | — | — | — | — |
 | — | — | 6:58 | — | — | — | — | — | — | — | 6:57 | — | — | — | — | — | — | — | 6:55 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 26 | 26 | 27 | 27 | 26 |
Feels °C | 25 | 24 | 24 | 25 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 29 | 30 | 29 | 29 | 29 | 29 | 28 | 29 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | NE 6 | S 12 | S 12 | S 12 | E 8 | E 8 | E 8 | NNE 6 | NE 7 | NE 7 | ENE 7 | ENE 7 | NE 7 | ENE 7 | E 7 | NNE 6 | NE 7 | NNE 7 | NNE 7 | ESE 8 | E 8 |
| kJ | 43 | 11 | 11 | 11 | 102 | 102 | 78 | 52 | 63 | 91 | 138 | 138 | 119 | 73 | 52 | 37 | 47 | 41 | 41 | 7 | 12 |
Swell 2 Height (m) Direction Period (s) | S 12 | SSE 9 | SSE 9 | SW 16 | S 12 | NE 6 | NE 6 | E 8 | E 8 | E 8 | SSW 18 | SSW 17 | SSW 16 | NNE 7 | NNE 7 | ENE 7 | E 7 | SSW 17 | ESE 8 | SSW 16 | SSW 16 |
| kJ | 11 | 8 | 8 | 10 | 11 | 58 | 58 | 78 | 55 | 44 | 30 | 28 | 27 | 51 | 40 | 37 | 38 | 29 | 7 | 25 | 25 |
Swell 3 Height (m) Direction Period (s) | SSE 9 | SSW 16 | SW 16 | SE 9 | SW 16 | S 12 | S 12 | SSW 18 | SSW 18 | SSW 18 | S 12 | S 12 | S 12 | SSW 17 | SSW 17 | E 8 | SSW 17 | ESE 8 | SSW 16 | SSE 8 | SSE 8 |
| kJ | 8 | 26 | 11 | 3 | 10 | 11 | 11 | 30 | 31 | 31 | 10 | 11 | 11 | 27 | 29 | 20 | 29 | 7 | 25 | 7 | 7 |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 8 | ENE 8 | ENE 8 | NE 6 | — | — | — | — | — | — | — | — | — | — | — | — | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
| kJ | 89 | 149 | 188 | 183 | 54 | — | — | — | — | — | — | — | — | — | — | — | — | 54 | 86 | 117 | 124 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 44 | 15 | 15 | 15 | 15 | 14 | 9 | 9 | 7 | 7 | 9 | 8 | 5 | 9 | 6 | 9 | 9 | 9 | 9 | 15 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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