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:
Guarita surfForecast / Rio Grande Do Sul / Brazil
48hr Weather and Surf, issued 2 am Tuesday 16 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Guarita surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Guarita sea temperature is
23.2° C
(Which is normal for this time of year)How big are the waves at Guarita today?
The current surf forecast for Guarita at 8AM is: 0.5m 10s primary swell from a Southeast direction and 0.5m 7s secondary swell from a East direction, 0.9m 5s secondary swell from a South-southwest direction (forecast issued at 02:00am December 16). The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 Dec) | 1.5ft (0.5m) | 10s |
| Afternoon (16 Dec) | 4ft (1.2m) | 7s |
| Evening (16 Dec) | 6ft (1.9m) | 8s |
Table - waves today at Guarita. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| 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 | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    | |||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 10 | 6 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 5 | 6 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 62 | 48 | 34 | 47 | 76 | 150 | 413 | 430 | 555 | 309 | 234 | 234 | 220 | 246 | 246 | 212 | 173 | 165 | 96 | 88 | 66 | 33 | 48 | 182 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross | cross- on | cross | cross- off | cross- off | cross- off | off | glass | on | on | cross- on | cross | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross |
High Tide / height (m) | 10:12AM 0.34 | 12:34AM 0.44 | 10:50AM 0.36 | 12:42AM 0.47 | 11:23AM 0.38 | |||||||||||||||||||
Low Tide / height (m) | 5:55AM 0.24 | 5:52PM 0.14 | 6:57AM 0.24 | 6:35PM 0.09 | 7:43AM 0.24 | 7:15PM 0.06 | ||||||||||||||||||
Tuesday 16 | Wednesday 17 | Thursday 18 | ||||||||||||||||||||||
| Sunrise | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - | - | - | 5:13 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:15 | - | - | - | - | - | - | - | 7:15 | - | - | - | - | - | - | - | 7:15 | - |
 |  |  |  |  |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | 1 | - | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 22 | 21 | 21 | 21 | 25 | 25 | 21 | 19 | 18 | 17 | 17 | 20 | 21 | 21 | 20 | 19 | 17 | 16 | 16 | 20 | 22 | 23 | 22 | 20 |
| Feels °C (?) | 25 | 22 | 20 | 19 | 22 | 20 | 15 | 16 | 16 | 16 | 16 | 20 | 19 | 19 | 18 | 17 | 15 | 14 | 15 | 19 | 19 | 21 | 20 | 19 |
- 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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