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:
The Box surfForecast / Northland / New Zealand
48hr Weather and Surf, issued 6 pm Friday 12 Dec 2025 NZDTForecast update in hr min s Forecast update imminent
The Box surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's The Box sea temperature is
20.0° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at The Box today?
The current surf forecast for The Box at 10PM is: 1.6m 13s primary swell from a Southwest direction and 2.1m 8s secondary swell from a South-southwest direction (forecast issued at 06:00pm December 12). An open ocean swell of 0.2m 15s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (NZDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (12 Dec) | - | - |
| Afternoon (12 Dec) | 6ft (1.8m) | 13s |
| Evening (12 Dec) | 5ft (1.6m) | 13s |
Table - waves today at The Box. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1083 | 933 | 947 | 780 | 680 | 680 | 1575 | 1541 | 1387 | 1131 | 899 | 800 | 723 | 661 | 672 | 672 | 555 | 555 | 503 | 435 | 326 | 320 | 288 | 263 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross | cross | cross | cross- off | cross- off | cross- off | cross- off | cross- on | glass | cross- off | off | off | off | off | off | cross- off | cross- off | cross- off | off | off | off | off | cross- off | cross- off |
High Tide / height (m) | 4:21PM 2.99 | 4:51AM 2.80 | 5:20PM 2.89 | 5:53AM 2.76 | 6:21PM 2.84 | 7:02AM 2.80 | ||||||||||||||||||
Low Tide / height (m) | 10:41PM 1.01 | 11:04AM 1.14 | 11:40PM 1.05 | 12:09PM 1.16 | 12:43AM 1.03 | |||||||||||||||||||
Friday 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:05 | - | - | - | - | - | - | - | 6:07 | - | - |
| Sunset | - | 8:35 | - | - | - | - | - | - | - | 8:36 | - | - | - | - | - | - | - | 8:37 | - | - | - | - | - | - |
 | |  | | | | | |  |  | | |  | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 18 | 17 | 17 | 17 | 16 | 19 | 19 | 19 | 18 | 17 | 16 | 15 | 16 | 19 | 21 | 21 | 20 | 18 | 17 | 17 | 17 | 20 | 21 |
| Feels °C (?) | 13 | 12 | 12 | 13 | 14 | 14 | 19 | 18 | 20 | 18 | 15 | 14 | 13 | 14 | 16 | 18 | 16 | 17 | 16 | 15 | 15 | 15 | 17 | 18 |
- 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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