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:
Jap Rock surfForecast / Florida – South / USA
48hr Weather and Surf, issued 6 pm Saturday 13 Dec 2025 ESTForecast update in hr min s Forecast update imminent
Jap Rock surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Jap Rock sea temperature is
26.6° C
(Which is 2.0°C warmer than normal for this time of year)How big are the waves at Jap Rock today?
The current surf forecast for Jap Rock at 11PM is: 0.9m 5s primary swell from a East-southeast direction and 0.3m 7s secondary swell from a North-northeast direction, 0.1m 13s secondary swell from a Northeast direction (forecast issued at 06:00pm December 13). The wind direction is predicted to be cross-onshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | - | - |
| Afternoon (13 Dec) | 2.5ft (0.8m) | 4s |
| Evening (13 Dec) | 3ft (0.9m) | 5s |
Table - waves today at Jap Rock. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| 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) (?) | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 5 | 9 | 9 | 9 | 5 | 6 | 7 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 25 | 32 | 39 | 55 | 55 | 22 | 14 | 8 | 8 | 7 | 15 | 63 | 247 | 749 | 1428 | 1430 | 1177 | 1011 | 818 | 573 | 547 | 530 | 470 | 421 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | cross | cross | cross- off | cross- off | glass | cross- off | cross | cross | cross- off | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross | cross- on | cross- on |
High Tide / height (m) | 3:08PM 0.76 | 3:57AM 0.77 | 4:00PM 0.74 | 4:49AM 0.78 | 4:49PM 0.73 | 5:36AM 0.80 | ||||||||||||||||||
Low Tide / height (m) | 9:46PM 0.09 | 10:14AM 0.21 | 10:33PM 0.07 | 11:02AM 0.20 | 11:17PM 0.06 | 11:47AM 0.19 | ||||||||||||||||||
Saturday 13 | Sunday 14 | Monday 15 | Tuesday 16 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:58 | - | - | - | - | - | - | - | - | 7:00 | - | - | - | - | - | - | - | 7:00 | - |
| Sunset | 5:29 | - | - | - | - | - | - | - | 5:29 | - | - | - | - | - | - | - | 5:30 | - | - | - | - | - | - | - |
 |  |  | | | |  | |  | |  | | |  |  | | | | | | | |  | | |
Rain (mm) | - | - | 1 | 5 | 1 | - | - | - | 2 | 3 | - | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 24 | 24 | 24 | 22 | 22 | 21 | 22 | 25 | 25 | 24 | 24 | 22 | 21 | 21 | 20 | 19 | 19 | 20 | 19 | 20 | 20 | 20 | 21 | 21 |
| Feels °C (?) | 22 | 23 | 23 | 22 | 23 | 23 | 24 | 27 | 25 | 24 | 23 | 19 | 17 | 16 | 15 | 15 | 15 | 17 | 16 | 17 | 18 | 17 | 17 | 17 |
- 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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