Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Hermenegildo surfForecast / Rio Grande Do Sul / Brazil
48hr Weather and Surf, issued 2 am Thursday 18 Dec 2025 -03Forecast update in hr min s Forecast update imminent
Hermenegildo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Hermenegildo sea temperature is
22.9° C
(Which is 2.0°C warmer than normal for this time of year)How big are the waves at Hermenegildo today?
The current surf forecast for Hermenegildo at 6AM is: 0.4m 10s primary swell from a South direction and 0.4m 7s secondary swell from a Southeast direction, 0.4m 4s secondary swell from a North-northeast direction (forecast issued at 02:00am December 18). The wind direction is predicted to be cross-offshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Dec) | 1.5ft (0.4m) | 9s |
| Afternoon (18 Dec) | 0.5ft (0.2m) | 9s |
| Evening (18 Dec) | 2.5ft (0.8m) | 5s |
Table - waves today at Hermenegildo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| 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) (?) | 10 | 10 | 10 | 9 | 9 | 9 | 4 | 5 | 9 | 8 | 8 | 4 | 5 | 8 | 12 | 12 | 11 | 11 | 5 | 6 | 10 | 11 | 11 | 11 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 75 | 72 | 28 | 27 | 14 | 6 | 13 | 29 | 2 | 3 | 3 | 4 | 2 | 6 | 27 | 28 | 41 | 58 | 46 | 88 | 35 | 41 | 40 | 22 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross- off | cross- off | cross- off | off | cross- off | cross- on | on | cross- on | cross- on | cross | cross | cross | cross | cross | cross- on | cross | cross- on |
High Tide / height (m) | 6:02AM 0.50 | 12:10PM 0.26 | 6:44PM 0.31 | 1:10AM 0.40 | 6:49AM 0.52 | 12:52PM 0.26 | 7:32PM 0.30 | 1:52AM 0.41 | 7:34AM 0.53 | 1:32PM 0.27 | 8:16PM 0.30 | |||||||||||||
Low Tide / height (m) | 2:45AM 0.30 | 9:54AM 0.19 | 3:22PM 0.09 | 9:38PM 0.16 | 3:34AM 0.31 | 10:40AM 0.19 | 4:09PM 0.07 | 10:20PM 0.16 | 4:19AM 0.31 | 11:23AM 0.20 | 4:53PM 0.05 | |||||||||||||
Thursday 18 | Friday 19 | Saturday 20 | ||||||||||||||||||||||
| Sunrise | - | - | 5:16 | - | - | - | - | - | - | - | 5:16 | - | - | - | - | - | - | - | 5:18 | - | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:39 | - | - | - | - | - | - | - | 7:40 | - | - | - | - | - | - | - | 7:40 | - |
 | |  | | | | | | | | | | | | | | | | |  |  | | |  | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 |
| Temp. °C | 18 | 17 | 17 | 21 | 25 | 29 | 28 | 23 | 22 | 21 | 20 | 23 | 25 | 24 | 24 | 22 | 22 | 21 | 21 | 25 | 28 | 28 | 24 | 23 |
| Feels °C (?) | 15 | 14 | 14 | 17 | 22 | 26 | 24 | 20 | 20 | 21 | 19 | 24 | 26 | 23 | 23 | 20 | 20 | 19 | 19 | 21 | 25 | 25 | 21 | 23 |
- 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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