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:
Waipio Bay surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 7 am Saturday 13 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Waipio Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Waipio Bay sea temperature is
25.7° C
(Which is slightly warmer than usual)How big are the waves at Waipio Bay today?
The current surf forecast for Waipio Bay at 11AM is: 1.2m 10s primary swell from a North-northwest direction and 0.6m 8s secondary swell from a East direction (forecast issued at 07:00am December 13). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (HST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 4ft (1.2m) | 11s |
| Afternoon (13 Dec) | 4ft (1.2m) | 10s |
| Evening (13 Dec) | 3.5ft (1.1m) | 11s |
Table - waves today at Waipio Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| 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 | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 10 | 10 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 12 | 12 | 14 | 13 | 14 | 14 | 15 | 14 | 13 | 13 | 13 | 14 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 356 | 373 | 331 | 318 | 337 | 343 | 281 | 212 | 167 | 131 | 94 | 70 | 141 | 141 | 327 | 340 | 436 | 522 | 635 | 746 | 556 | 663 | 683 | 869 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | cross- on | glass | glass | glass | glass | cross- off | cross | on | cross- on | glass | glass | glass | glass | glass | cross | cross- on | cross- on | cross- on | cross- on | cross | glass |
High Tide / height (m) | 9:19AM 0.60 | 12:33AM 0.70 | 10:14AM 0.54 | 1:06AM 0.78 | 11:12AM 0.50 | 1:36AM 0.85 | ||||||||||||||||||
Low Tide / height (m) | 4:36AM 0.51 | 4:50PM 0.19 | 6:31AM 0.49 | 5:24PM 0.16 | 7:39AM 0.45 | 5:56PM 0.13 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tue 16 | |||||||||||||||||||||
| Sunrise | - | 6:48 | - | - | - | - | - | - | - | 6:48 | - | - | - | - | - | - | - | 6:48 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:44 | - | - | - | - | - | - | - | 5:44 | - | - | - | - | - | - | - | 5:45 | - | - | - |
 |  | | | | | | | | | |  | |  | | | | | | |  |  | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 26 | 26 | 25 | 25 | 24 | 24 | 24 | 25 | 26 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 26 | 26 | 25 | 25 | 25 | 25 |
| Feels °C (?) | 25 | 25 | 27 | 28 | 28 | 28 | 26 | 26 | 25 | 27 | 28 | 28 | 29 | 28 | 27 | 28 | 28 | 26 | 27 | 27 | 26 | 26 | 26 | 28 |
- 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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