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Number Fours surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Wednesday 22 Apr 2026 HSTForecast update in hr min s Forecast update imminent
Number Fours surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Number Fours sea temperature is
24.8° C
(Which is normal for this time of year)How big are the waves at Number Fours today?
The current surf forecast for Number Fours at 4AM is: 0.5m 7s primary swell from a East direction (forecast issued at 01:00am April 22). An open ocean swell of 1.1m 14s is not directed at the surf break, a second open ocean swell of 0.7m 14s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (22 Apr) | - | - |
| Afternoon (22 Apr) | 2ft (0.6m) | 7s |
| Evening (22 Apr) | 2ft (0.6m) | 7s |
Table - waves today at Number Fours. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 25°C on Wed morning, min 22°C on Thu night). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 22 | Thursday 23 | Friday 24 | ||||||||||||||||||||||
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 | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
NNE 15 | E 7 | NNE 14 | NNE 13 | E 7 | E 7 | E 7 | E 7 | NNE 12 | ENE 7 | ENE 7 | ENE 7 | NNE 11 | NNE 11 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | SW 13 | SSW 16 | SSW 13 | SW 16 | SW 13 | SW 13 | |
0 | 27 | 0 | 0 | 38 | 36 | 38 | 39 | 0 | 42 | 42 | 42 | 0 | 0 | 0 | 0 | 0 | 0 | 46 | 25 | 35 | 40 | 44 | 43 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 8:44AM0.08m | 9:21PM0.59m | 10:46AM0.12m | 10:27PM0.55m | 12:06PM0.19m | |||||||||||||||||||
Low Tide | 4:34AM0.02m | 12:59PM0.01m | 5:34AM-0.01m | 2:32PM0.07m | 6:16AM-0.02m | 4:20PM0.10m | ||||||||||||||||||
 | |  | | | | | | | |  | | | | |  | |  | | | | | | | |
 | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — | — | 6:05 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — | — | — | — | — | — | 6:52 | — | — |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 23 | 23 | 25 | 25 | 25 | 24 | 23 | 23 | 23 | 23 | 24 | 25 | 25 | 24 | 23 | 23 | 22 | 23 | 24 | 24 | 24 | 23 | 23 |
26 | 25 | 25 | 27 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 23 | 23 | 21 | 22 | 23 | 22 | 22 | 21 | 21 | |
Swell 1 Height (m) Direction Period (s) | NNE 15 | NNE 14 | NNE 14 | NNE 13 | NNE 13 | NNE 13 | NNE 12 | NNE 12 | NNE 12 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 11 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 10 | NNE 9 | NNE 9 | W 13 | W 12 | WNW 12 |
 kJ | 334 | 501 | 384 | 499 | 484 | 389 | 359 | 322 | 265 | 247 | 230 | 183 | 183 | 161 | 146 | 114 | 111 | 109 | 81 | 96 | 92 | 84 | 76 | 48 |
Swell 2 Height (m) Direction Period (s) | NE 8 | W 14 | W 14 | W 14 | W 14 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 13 | W 12 | W 14 | WNW 14 | W 12 | W 12 | W 13 | W 13 | W 13 | SW 16 | SW 13 | SW 13 |
| kJ | 64 | 196 | 196 | 191 | 178 | 173 | 170 | 123 | 121 | 121 | 117 | 80 | 79 | 77 | 150 | 70 | 46 | 45 | 89 | 87 | 87 | 40 | 44 | 43 |
Swell 3 Height (m) Direction Period (s) | W 14 | E 7 | NNE 8 | NNW 14 | NNW 13 | E 7 | NNW 13 | NNW 13 | NW 13 | NW 12 | NNW 12 | NNW 12 | NNW 12 | NW 12 | NW 12 | W 12 | WNW 15 | WNW 14 | SW 13 | SSW 16 | SSW 13 | SSW 13 | SSW 16 | SW 16 |
| kJ | 199 | 27 | 42 | 125 | 120 | 36 | 114 | 113 | 80 | 77 | 59 | 58 | 57 | 37 | 36 | 44 | 71 | 70 | 46 | 25 | 35 | 35 | 25 | 41 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 7 | — | E 7 | E 7 | ENE 3 | ENE 7 | ENE 7 | ENE 7 | ENE 4 | NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | ENE 4 | NE 4 | NE 9 | NE 9 | NE 9 |
| kJ | — | — | — | — | 38 | — | 38 | 39 | 4 | 42 | 42 | 42 | 13 | 9 | 12 | 16 | 14 | 22 | 24 | 16 | 19 | 202 | 226 | 226 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 13 | 31 | 1 | 1 | 2 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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