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:
Cliffs surfForecast / HAW – Oahu / USA
48hr Weather and Surf, issued 1 am Tuesday 16 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Cliffs surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Cliffs sea temperature is
25.8° C
(Which is slightly warmer than usual)How big are the waves at Cliffs today?
The current surf forecast for Cliffs at 6AM is: 0.8m 5s primary swell from a South direction (forecast issued at 01:00am December 16). An open ocean swell of 1.4m 13s is not directed at the surf break, a second open ocean swell of 0.5m 12s is not directed at the surf break. The wind direction is predicted to be onshore.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 3ft (0.9m) | 5s |
| Afternoon (16 Dec) | 4ft (1.2m) | 6s |
| Evening (16 Dec) | 3.5ft (1.1m) | 6s |
Table - waves today at Cliffs. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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) (?) | 10 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 5 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 5 | 5 | 5 | 5 | 10 | 9 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 46 | 24 | 23 | 28 | 55 | 80 | 106 | 97 | 92 | 67 | 86 | 95 | 116 | 105 | 95 | 66 | 48 | 43 | 42 | 32 | 29 | 27 | 157 | 118 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | on | on | on | cross- on | on | cross- on | cross- on | on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross |
High Tide / height (m) | 2:20AM 0.62 | 1:22PM 0.22 | 2:53AM 0.66 | 2:06PM 0.20 | 3:26AM 0.69 | 2:47PM 0.19 | ||||||||||||||||||
Low Tide / height (m) | 9:42AM 0.16 | 7:08PM 0.01 | 10:23AM 0.13 | 7:39PM -0.00 | 11:00AM 0.12 | |||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - | - | - | - | 7:01 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - |
 |  |  |  | | | | | | | | | | | | | | | | | |  | |  | |
Rain (mm) | - | 1 | - | 2 | 3 | 2 | 2 | 4 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 4 | 4 | 3 | 2 | 2 | 1 | - | - | - |
| Temp. °C | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 24 | 25 | 24 | 24 | 24 | 24 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 25 | 24 |
| Feels °C (?) | 25 | 26 | 25 | 25 | 25 | 24 | 25 | 25 | 24 | 22 | 23 | 22 | 22 | 22 | 23 | 24 | 24 | 23 | 23 | 23 | 24 | 25 | 26 | 26 |
- 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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