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:
Onrus surfForecast / Overberg / South Africa
48hr Weather and Surf, issued 1 pm Monday 15 Dec 2025 SASTForecast update in hr min s Forecast update imminent
Onrus surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Onrus sea temperature is
16.1° C
(Which is 3.2°C colder than average for this time of year)How big are the waves at Onrus today?
The current surf forecast for Onrus at 5PM is: 2.5m 12s primary swell from a Southwest direction and 0.1m 15s secondary swell from a West direction (forecast issued at 01:00pm December 15). The wind direction is predicted to be cross-shore.
| Time (SAST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Dec) | 8ft (2.5m) | 12s |
| Afternoon (15 Dec) | 8ft (2.5m) | 12s |
| Evening (15 Dec) | 8ft (2.5m) | 12s |
Table - waves today at Onrus. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| 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 | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 12 | 14 | 14 | 10 | 9 | 10 | 13 | 12 | 12 | 12 | 12 | 12 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 1830 | 1966 | 1897 | 1897 | 1830 | 1602 | 1493 | 1392 | 1369 | 1379 | 808 | 1731 | 3040 | 3386 | 1254 | 1033 | 1059 | 1052 | 880 | 826 | 482 | 406 | 278 | 254 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | on | cross- on | cross- on | glass | cross- off | cross- off | cross- off | cross- off | off | cross- off | cross | cross | cross | cross- on | cross- on | cross- on | on | on | on | cross- on | cross- on |
High Tide / height (m) | 12:19PM 1.27 | 1:02AM 1.18 | 1:03PM 1.31 | 1:41AM 1.24 | 1:42PM 1.35 | 2:17AM 1.31 | ||||||||||||||||||
Low Tide / height (m) | 6:56PM 0.40 | 7:00AM 0.51 | 7:34PM 0.34 | 7:42AM 0.45 | 8:09PM 0.29 | |||||||||||||||||||
Monday 15 | Tuesday 16 | Wednesday 17 | Thursday 18 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:24 | - | - | - | - | - | - | - | 5:26 |
| Sunset | - | - | 7:51 | - | - | - | - | - | - | - | 7:52 | - | - | - | - | - | - | - | 7:52 | - | - | - | - | - |
 | | |  | | | | | | |  |  |  | |  | |  | | |  | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 21 | 21 | 21 | 19 | 18 | 18 | 18 | 19 | 22 | 22 | 21 | 20 | 20 | 18 | 18 | 18 | 18 | 18 | 18 | 17 | 18 | 17 | 15 | 16 |
| Feels °C (?) | 20 | 19 | 20 | 19 | 18 | 18 | 19 | 19 | 19 | 18 | 16 | 17 | 18 | 15 | 14 | 15 | 15 | 13 | 14 | 13 | 14 | 13 | 11 | 12 |
- 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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