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:
Port Mansfield Jetty surfForecast / Texas / USA
48hr Weather and Surf, issued 11 am Monday 15 Dec 2025 CSTForecast update in hr min s Forecast update imminent
Port Mansfield Jetty surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Port Mansfield Jetty sea temperature is
19.9° C
(Which is 2.2°C colder than average for this time of year)How big are the waves at Port Mansfield Jetty today?
The current surf forecast for Port Mansfield Jetty at 4PM is: 1.5m 7s primary swell from a Northeast direction and 0.1m 8s secondary swell from a Southeast direction (forecast issued at 11:00am December 15). The wind direction is predicted to be cross-offshore.
| Time (CST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 5ft (1.6m) | 8s |
| Afternoon (15 Dec) | 5ft (1.5m) | 7s |
| Evening (15 Dec) | 4ft (1.2m) | 7s |
Table - waves today at Port Mansfield Jetty. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 0 AM | 3 AM | 6 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 5 | 6 | 6 | 6 | 6 | 5 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 326 | 308 | 242 | 178 | 153 | 151 | 151 | 145 | 118 | 103 | 71 | 54 | 78 | 74 | 58 | 52 | 80 | 90 | 110 | 114 | 138 | 101 | 81 | 56 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross | cross- on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 3:44PM 0.57 | 4:17PM 0.60 | 4:50PM 0.62 | |||||||||||||||||||||
Low Tide / height (m) | 6:07AM 0.16 | 6:38AM 0.12 | 7:10AM 0.10 | |||||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - |
| Sunset | - | - | 5:37 | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - | - | - | 5:38 | - | - | - | - | - |
 | |  |  | | | | | | | | |  |  | | |  | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | - | 3 | 2 | 1 | - | - | 1 | - | - |
| Temp. °C | 8 | 10 | 12 | 13 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 21 | 21 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 23 | 23 | 22 | 22 |
| Feels °C (?) | 2 | 5 | 8 | 10 | 13 | 15 | 16 | 16 | 17 | 17 | 18 | 18 | 19 | 21 | 22 | 21 | 20 | 20 | 20 | 20 | 23 | 23 | 21 | 21 |
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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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