Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Number Fours surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Monday 22 Dec 2025 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 slightly warmer than usual)How big are the waves at Number Fours today?
The current surf forecast for Number Fours at 8AM is: 0.4m 16s primary swell from a Southwest direction and 0.4m 7s secondary swell from a South-southeast direction, 0.9m 6s secondary swell from a East direction (forecast issued at 01:00am December 22). An open ocean swell of 1.2m 11s 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 Dec) | 1.5ft (0.4m) | 16s |
| Afternoon (22 Dec) | 2.5ft (0.8m) | 6s |
| Evening (22 Dec) | 2.5ft (0.7m) | 6s |
Table - waves today at Number Fours. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 22 | Tuesday 23 | Wednesday 24 | ||||||||||||||||||||||
| 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 | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 18 | 17 | 16 | 16 | 6 | 6 | 6 | 16 | 7 | 7 | 7 | 7 | 7 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 7 | 8 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 17 | 79 | 77 | 69 | 67 | 39 | 41 | 32 | 124 | 163 | 279 | 303 | 301 | 276 | 802 | 853 | 692 | 300 | 292 | 336 | 266 | 199 | 204 | 237 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | 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 / height (m) | 5:44AM 0.70 | 5:45PM 0.19 | 6:19AM 0.68 | 6:45PM 0.20 | 6:55AM 0.64 | 7:56PM 0.23 | ||||||||||||||||||
Low Tide / height (m) | 9:59PM 0.01 | 1:23PM 0.08 | 10:37PM 0.04 | 1:58PM 0.06 | 11:21PM 0.08 | 2:32PM 0.05 | ||||||||||||||||||
Monday 22 | Tuesday 23 | Wednesday 24 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:03 | - | - | - | - | - | - | - | 7:05 | - | - | - | - | - | - | - | 7:05 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:54 | - | - | - | - | - | - | - | 5:55 | - |
 | | |  |  |  | |  |  | | | | | | | | |  | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 23 | 23 |
| Feels °C (?) | 25 | 24 | 25 | 24 | 23 | 24 | 24 | 23 | 24 | 22 | 20 | 20 | 20 | 20 | 18 | 19 | 18 | 18 | 19 | 19 | 20 | 20 | 19 | 19 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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