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 7 pm Monday 15 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 2AM is: 0.7m 5s primary swell from a South-southeast direction (forecast issued at 07:00pm December 15). An open ocean swell of 1.4m 14s is not directed at the surf break, a second open ocean swell of 0.6m 12s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 2.5ft (0.8m) | 5s |
| Afternoon (16 Dec) | 4ft (1.2m) | 5s |
| Evening (16 Dec) | 3.5ft (1.1m) | 6s |
Table - waves today at Sandy Beach. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 11 AM | 2 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 5 | 12 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 5 | 5 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 29 | 31 | 26 | 25 | 24 | 24 | 33 | 77 | 101 | 83 | 59 | 67 | 70 | 89 | 89 | 86 | 89 | 72 | 55 | 43 | 42 | 33 | 24 | 32 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross- on | cross- on | cross | cross | cross | cross | cross | cross | cross | cross | cross |
High Tide / height (m) | 1:20AM 0.61 | 12:24PM 0.21 | 1:51AM 0.64 | 1:09PM 0.19 | 2:23AM 0.65 | 1:50PM 0.17 | ||||||||||||||||||
Low Tide / height (m) | 5:55PM -0.01 | 8:51AM 0.14 | 6:24PM -0.02 | 9:30AM 0.11 | 6:56PM -0.02 | 10:05AM 0.09 | ||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - |
| Sunset | 5:51 | - | - | - | - | - | - | - | 5:51 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - |
 |  | | |  | | | | |  | | | | | | | | | | | | |  |  | |
Rain (mm) | 1 | - | - | - | - | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 1 | 1 | 1 | - | - |
| Temp. °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 25 | 25 |
| Feels °C (?) | 25 | 25 | 25 | 26 | 25 | 25 | 24 | 23 | 25 | 25 | 24 | 24 | 23 | 22 | 23 | 23 | 22 | 24 | 24 | 24 | 24 | 24 | 25 | 24 |
- 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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