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:
4 Mile surfForecast / CAL – Santa Cruz / USA
48hr Weather and Surf, issued 3 am Tuesday 16 Dec 2025 PSTForecast update in hr min s Forecast update imminent
4 Mile surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's 4 Mile sea temperature is
14.1° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at 4 Mile today?
The current surf forecast for 4 Mile at 6AM is: 1.1m 10s primary swell from a West-northwest direction and 0.4m 16s secondary swell from a Southwest direction, 0.4m 4s secondary swell from a Northwest direction (forecast issued at 03:00am December 16). The wind direction is predicted to be glassy and the swell rating is 2.
| Time (PST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 4.5ft (1.4m) | 11s |
| Afternoon (16 Dec) | 5.5ft (1.7m) | 12s |
| Evening (16 Dec) | 6ft (1.8m) | 12s |
Table - waves today at 4 Mile. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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 | 4 PM | 7 PM | 10 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 16 | 10 | 10 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 11 | 11 | 11 | 12 | 11 | 10 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 66 | 184 | 306 | 589 | 761 | 855 | 942 | 942 | 933 | 819 | 805 | 726 | 714 | 617 | 607 | 615 | 607 | 520 | 411 | 329 | 247 | 266 | 218 | 306 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | off | glass | glass | cross | cross | cross- off | glass | cross- off | glass | glass | glass | cross | cross | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross | cross- off | cross- off | cross- off |
High Tide / height (m) | 7:16AM 2.09 | 9:33PM 1.48 | 7:48AM 2.13 | 10:17PM 1.51 | 8:23AM 2.16 | |||||||||||||||||||
Low Tide / height (m) | 12:52AM 1.17 | 2:46PM 0.35 | 1:33AM 1.23 | 3:22PM 0.26 | 2:12AM 1.27 | 3:58PM 0.20 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | - | 7:13 | - | - | - | - | - | - | - | 7:15 | - | - | - | - | - | - | - | 7:16 | - | - | - | - |
| Sunset | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:52 | - | - | - | - | - | - | - | 4:53 | - | - |
 |  |  |  | | | | | | | | | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 15 | 14 | 14 | 16 | 19 | 19 | 17 | 17 | 16 | 16 | 15 | 15 | 17 | 18 | 15 | 14 | 12 | 12 | 12 | 15 | 18 | 19 | 16 | 15 |
| Feels °C (?) | 12 | 12 | 13 | 17 | 18 | 19 | 17 | 18 | 16 | 17 | 16 | 16 | 17 | 16 | 13 | 13 | 10 | 10 | 10 | 13 | 15 | 17 | 15 | 14 |
- 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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