Nazare Big Wave Challenge Gets Yellow Alert, Could Run Saturday in Giant Waves
70-foot plus waves predicted for Portuguese big wave tow surfing competition.
Surf Forecasts:
Keaau surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 pm Friday 12 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Keaau surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Keaau sea temperature is
26.0° C
(Which is slightly warmer than usual)How big are the waves at Keaau today?
The current surf forecast for Keaau at 7PM is: 1.2m 11s primary swell from a North direction and 1.1m 11s secondary swell from a Northwest direction (forecast issued at 01:00pm December 12). The wind direction is predicted to be glassy and the swell rating is 3.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | 4.5ft (1.4m) | 11s |
| Afternoon (12 Dec) | 3.5ft (1.1m) | 12s |
| Evening (12 Dec) | 4ft (1.2m) | 11s |
Table - waves today at Keaau. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 16 | 8 | 15 | 14 | 14 | 13 | 13 | 13 | 13 | 13 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 423 | 327 | 330 | 358 | 410 | 478 | 520 | 432 | 450 | 385 | 324 | 255 | 204 | 158 | 127 | 196 | 262 | 1690 | 1450 | 1599 | 1359 | 1147 | 996 | 816 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | on | glass | cross- off | cross | cross | 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 | cross | cross- off | cross | cross- off |
High Tide / height (m) | 10:25AM 0.40 | 12:54AM 0.41 | 11:14AM 0.33 | 1:33AM 0.48 | 12:05PM 0.27 | 2:08AM 0.54 | ||||||||||||||||||
Low Tide / height (m) | 5:36PM 0.03 | 6:37AM 0.26 | 6:04PM 0.02 | 8:04AM 0.23 | 6:30PM 0.02 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 |
| Sunset | - | - | 5:51 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - |
 | | |  | | | | | | | |  | | | | | | |  | | | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 1 | - | 1 | 1 | - | - | - | - | 1 | 1 | 1 | 4 | 4 |
| Temp. °C | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 24 | 24 | 24 | 23 | 23 |
| Feels °C (?) | 23 | 23 | 23 | 23 | 23 | 22 | 23 | 23 | 22 | 24 | 24 | 25 | 25 | 24 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 24 | 25 |
- Map Icons:
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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