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:
Sandy Beach surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Saturday 13 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Sandy Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Sandy Beach sea temperature is
25.8° C
(Which is slightly warmer than usual)How big are the waves at Sandy Beach today?
The current surf forecast for Sandy Beach at 6AM is: 0.5m 8s primary swell from a East direction and 0.5m 3s secondary swell from a South direction (forecast issued at 01:00am December 13). An open ocean swell of 1.0m 11s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 1.5ft (0.5m) | 8s |
| Afternoon (13 Dec) | 3.5ft (1.0m) | 4s |
| Evening (13 Dec) | 3.5ft (1.0m) | 5s |
Table - waves today at Sandy Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| 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) (?) | 8 | 8 | 8 | 8 | 12 | 4 | 4 | 5 | 5 | 8 | 8 | 8 | 5 | 15 | 4 | 14 | 4 | 14 | 6 | 16 | 8 | 8 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 31 | 32 | 31 | 31 | 28 | 34 | 42 | 40 | 47 | 20 | 19 | 19 | 11 | 0 | 9 | 0 | 3 | 62 | 12 | 0 | 11 | 19 | 38 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross- on | cross | cross | cross | cross | cross | cross- off | cross- off | cross- off | cross | cross | cross | cross | cross- on | cross- on | on | on | on | on | cross- on | glass |
High Tide / height (m) | 11:29PM 0.43 | 9:56AM 0.35 | 12:11AM 0.51 | 10:46AM 0.29 | 12:47AM 0.56 | 11:36AM 0.24 | ||||||||||||||||||
Low Tide / height (m) | 5:27AM 0.24 | 5:00PM 0.01 | 6:56AM 0.22 | 5:27PM -0.00 | 8:02AM 0.18 | 5:55PM -0.01 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:58 | - | - | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | 7:00 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:51 | - |
 | |  |  |  | | | |  | | |  | | | |  | | | |  |  | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | 1 | 3 | 1 | 1 | 1 | - | 1 | - | - | 1 | 1 | 3 | - | - | - | - |
| Temp. °C | 24 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 25 | 24 | 24 | 24 | 24 | 25 | 25 | 24 | 24 | 24 | 23 | 22 | 23 | 24 | 25 | 24 |
| Feels °C (?) | 26 | 25 | 24 | 22 | 23 | 23 | 24 | 24 | 24 | 23 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 22 | 23 | 25 | 26 | 27 |
- 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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