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:
Banyans surfForecast / HAW – Big Island / USA
48hr Weather and Surf, issued 7 am Tuesday 16 Dec 2025 HSTForecast update in hr min s Forecast update imminent
Banyans surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Banyans sea temperature is
26.2° C
(Which is 1.1°C warmer than normal for this time of year)How big are the waves at Banyans today?
The current surf forecast for Banyans at 12PM is: 0.7m 11s primary swell from a West-northwest direction (forecast issued at 07:00am December 16). An open ocean swell of 0.4m 5s 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 (0.7m) | 11s |
| Afternoon (16 Dec) | 2ft (0.6m) | 11s |
| Evening (16 Dec) | 1.5ft (0.4m) | 11s |
Table - waves today at Banyans. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| 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 | 11 | 11 | 11 | 11 | 11 | 10 | 11 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 10 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 157 | 109 | 109 | 82 | 82 | 47 | 45 | 43 | 45 | 53 | 110 | 236 | 286 | 269 | 587 | 454 | 405 | 324 | 302 | 226 | 183 | 170 | 116 | 109 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | glass | glass | on | cross- on | cross | off | cross- on | cross- off | cross | cross | cross- on | cross | cross | cross | cross- off | cross- off | glass | cross- on | cross- on | cross | cross- off | cross | glass |
High Tide / height (m) | 2:01AM 0.75 | 1:17PM 0.34 | 2:34AM 0.79 | 2:03PM 0.32 | 3:08AM 0.82 | 2:43PM 0.32 | ||||||||||||||||||
Low Tide / height (m) | 9:12AM 0.24 | 7:01PM 0.08 | 9:49AM 0.21 | 7:36PM 0.07 | 10:24AM 0.18 | 8:11PM 0.05 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | Fri 19 | |||||||||||||||||||||
| Sunrise | - | 6:50 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - | - | 6:50 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:47 | - | - | - | - | - | - | - | 5:49 | - | - | - |
 |  | | | |  | | | |  | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 25 | 27 | 26 | 26 | 25 | 25 | 24 | 25 | 24 | 26 | 26 | 25 | 24 | 24 | 24 | 24 | 25 | 26 | 26 | 25 | 25 | 25 | 24 |
| Feels °C (?) | 28 | 28 | 29 | 28 | 29 | 27 | 28 | 27 | 27 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 27 | 27 | 27 | 26 | 27 | 28 | 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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