- Forecast
- Maps
- Live
- Weather State
- Spot Information
Surf Forecasts:
Number Fours surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 7 am Saturday 23 May 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
25.6° 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 12PM is: 3.0m 8s primary swell from a East-northeast direction and 0.6m 16s secondary swell from a South direction, 0.3m 13s secondary swell from a South-southwest direction (forecast issued at 07:00am May 23). The wind direction is predicted to be cross-offshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (23 May) | 10ft (3.0m) | 8s |
| Afternoon (23 May) | 8ft (2.5m) | 8s |
| Evening (23 May) | 8ft (2.5m) | 8s |
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 24°C on Sun morning, min 22°C on Sat night). Mainly strong winds. | ||||||||||||||||||||||||
Saturday 23 | Sunday 24 | Monday 25 | Tue 26 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | |
789 | 897 | 1141 | 996 | 941 | 857 | 897 | 919 | 731 | 770 | 731 | 731 | 675 | 741 | 740 | 715 | 627 | 569 | 541 | 483 | 430 | 419 | 455 | 503 | |
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 | 11:42AM0.26m | 10:30PM0.44m | 12:35PM0.34m | 11:20PM0.37m | 1:17PM0.42m | 00:06AM0.30m | ||||||||||||||||||
Low Tide | 5:12AM-0.05m | 4:11PM0.16m | 5:45AM-0.05m | 5:51PM0.17m | 6:13AM-0.06m | 7:16PM0.16m | ||||||||||||||||||
 |  |  | | | | | |  | | | | | | | | | | | | | | | | |
 | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | 5:48 |
 | — | — | — | — | 7:05 | — | — | — | — | — | — | — | 7:06 | — | — | — | — | — | — | — | 7:06 | — | — | 7:07 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 | 23 | 23 |
19 | 17 | 17 | 18 | 17 | 18 | 18 | 19 | 18 | 18 | 20 | 19 | 19 | 19 | 18 | 19 | 19 | 19 | 19 | 20 | 19 | 19 | 19 | 20 | |
Swell 1 Height (m) Direction Period (s) | S 16 | S 16 | S 16 | S 16 | S 15 | S 15 | S 15 | S 15 | S 14 | S 14 | S 14 | S 13 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 14 | S 13 | S 13 | S 13 | S 13 |
 kJ | 129 | 127 | 125 | 174 | 159 | 157 | 109 | 155 | 146 | 132 | 93 | 92 | 93 | 89 | 140 | 99 | 99 | 64 | 97 | 89 | 87 | 84 | 84 | 84 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | SSW 13 | SSW 13 | NNW 16 | NNW 15 | NW 15 | NW 14 | NW 14 | NW 13 | NW 13 | NW 12 | NW 12 | NW 12 | NW 12 | NW 12 | NW 11 | NW 11 | S 12 | NNW 11 | NNW 11 | NNW 11 | NNW 11 | NNW 10 | NNW 10 |
| kJ | 59 | 58 | 34 | 25 | 44 | 54 | 52 | 46 | 44 | 43 | 39 | 37 | 37 | 36 | 21 | 20 | 19 | 45 | 12 | 11 | 11 | 11 | 11 | 10 |
Swell 3 Height (m) Direction Period (s) | NNW 11 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | S 18 | SSE 11 | SSE 11 | SE 11 | S 16 | S 16 | S 16 | S 16 | — | SW 20 | SW 20 | NW 11 | S 20 | S 15 | S 20 | S 20 | SW 19 | SW 19 |
| kJ | 11 | 14 | 14 | 14 | 14 | 13 | 24 | 12 | 12 | 5 | 46 | 46 | 46 | 46 | — | 16 | 15 | 19 | 7 | 5 | 7 | 7 | 15 | 15 |
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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 |
| kJ | 789 | 897 | 1141 | 996 | 941 | 857 | 897 | 919 | 731 | 770 | 731 | 731 | 675 | 741 | 740 | 715 | 627 | 569 | 541 | 483 | 430 | 419 | 455 | 503 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 42 | 130 | 201 | 127 | 130 | 128 | 48 | 39 | 31 | 42 | 126 | 126 | 126 | 48 | 127 | 48 | 126 | 34 | 39 | 44 | 39 | 48 | 31 | 31 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Number Fours surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest