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:
Rivoli Bay surfForecast / SA – East Coast / Australia
48hr Weather and Surf, issued 9 pm Friday 12 Dec 2025 ACDTForecast update in hr min s Forecast update imminent
Rivoli Bay surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Rivoli Bay sea temperature is
17.4° C
(Which is 1.5°C warmer than normal for this time of year)How big are the waves at Rivoli Bay today?
The current surf forecast for Rivoli Bay at 2AM is: 1.3m 12s primary swell from a Southwest direction and 0.2m 18s secondary swell from a South-southwest direction, 0.7m 4s secondary swell from a South direction (forecast issued at 09:30pm December 12). The wind direction is predicted to be onshore.
| Time (ACDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (13 Dec) | 6ft (1.8m) | 15s |
| Afternoon (13 Dec) | 7ft (2.2m) | 14s |
| Evening (13 Dec) | 6ft (1.8m) | 13s |
Table - waves today at Rivoli Bay. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Fri 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| 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 | 4 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |   |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 13 | 12 | 12 | 12 | 16 | 15 | 14 | 13 | 13 | 13 | 13 | 12 | 12 | 12 | 13 | 14 | 14 | 14 | 14 | 14 | 13 | 13 | 13 | 12 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 659 | 619 | 528 | 528 | 437 | 1377 | 1929 | 1561 | 1144 | 1053 | 721 | 1281 | 1576 | 2335 | 7274 | 9243 | 9952 | 7221 | 5633 | 5621 | 4169 | 3724 | 4862 | 4108 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | on | on | on | cross- on | on | on | cross- on | cross- on | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | on | on | on | on | on | on | on | on |
High Tide / height (m) | 4:34AM 0.61 | 4:12AM 0.55 | 11:57PM 0.57 | |||||||||||||||||||||
Low Tide / height (m) | 9:24PM 0.33 | 12:15PM 0.29 | 1:14PM 0.26 | 2:19PM 0.23 | ||||||||||||||||||||
Fri 12 | Saturday 13 | Sunday 14 | Monday 15 | |||||||||||||||||||||
| Sunrise | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - | - | - | - | - | 5:41 | - | - | - |
| Sunset | 8:23 | - | - | - | - | - | - | - | 8:24 | - | - | - | - | - | - | - | 8:24 | - | - | - | - | - | - | - |
 |  |  |  |  |  | | | | | |  | | | | | | | | | | | | | |
Rain (mm) | - | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 19 | 17 | 15 | 15 | 14 | 15 | 15 | 15 | 14 | 14 | 14 | 15 | 14 | 13 | 14 | 13 | 13 | 13 | 13 | 12 | 13 | 13 | 13 | 12 |
| Feels °C (?) | 16 | 13 | 11 | 11 | 10 | 11 | 10 | 11 | 10 | 9 | 7 | 9 | 6 | 5 | 6 | 5 | 5 | 6 | 7 | 6 | 7 | 6 | 7 | 5 |
- 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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