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Hermenegildo Surf Forecast
/ Rio Grande Do Sul (19 surf breaks) /
Surf Forecasts:
Hermenegildo surfForecast / Rio Grande Do Sul / Brazil
48hr Weather and Surf, issued 2 pm Monday 18 May 2026 -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
15.2° C
(Which is 1.5°C colder than average for this time of year)How big are the waves at Hermenegildo today?
The current surf forecast for Hermenegildo at 7PM is: 1.1m 13s primary swell from a South-southeast direction and 0.7m 18s secondary swell from a South-southeast direction (forecast issued at 02:00pm May 18). The wind direction is predicted to be cross-offshore and the swell rating is 3.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 May) | - | - |
| Afternoon (18 May) | 3.5ft (1.0m) | 10s |
| Evening (18 May) | 5ft (1.5m) | 17s |
Table - waves today at Hermenegildo. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 14°C on Mon afternoon, min 7°C on Mon night). Wind will be generally light. | ||||||||||||||||||||||||
Mon 18 | Tuesday 19 | Wednesday 20 | Thu 21 | |||||||||||||||||||||
12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | 6 AM | 9 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
S 10 | S 10 | SSE 13 | SSE 17 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 13 | S 13 | S 12 | S 12 | S 12 | SSW 12 | S 14 | S 15 | S 16 | S 16 | S 15 | S 14 | SSE 14 | SSE 13 | SSE 13 | S 13 | |
267 | 188 | 418 | 1238 | 1214 | 1059 | 862 | 572 | 490 | 329 | 362 | 333 | 403 | 1338 | 1290 | 2276 | 4966 | 4524 | 4235 | 4054 | 3370 | 2693 | 2402 | 2400 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | cross-off | off | off | off | off | off | off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross | cross | cross | cross | cross | cross-off | |
High Tide | 2:56PM0.37m | 8:52PM0.76m | 2:18AM0.16m | 9:36AM0.42m | 3:41PM0.35m | 9:45PM0.79m | 2:52AM0.20m | 10:25AM0.40m | 4:26PM0.33m | 10:37PM0.79m | 3:32AM0.25m | |||||||||||||
Low Tide | 11:53AM0.14m | 5:06PM0.28m | 1:14AM0.15m | 5:46AM-0.13m | 12:40PM0.13m | 5:53PM0.25m | 2:10AM0.20m | 6:38AM-0.15m | 1:29PM0.11m | 6:40PM0.22m | 3:01AM0.24m | 7:30AM-0.13m | ||||||||||||
 | |  | | | | | | | | | | | | | |  |  |  |  | | | | | |
 | — | — | — | — | — | — | 7:18 | — | — | — | — | — | — | — | 7:20 | — | — | — | — | — | — | — | 7:20 | — |
 | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | 5:37 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 12 | 14 | 13 | 12 | 10 | 8 | 7 | 7 | 11 | 14 | 13 | 11 | 9 | 9 | 9 | 9 | 13 | 13 | 12 | 12 | 11 | 12 | 11 | 11 |
7 | 11 | 10 | 8 | 6 | 4 | 2 | 2 | 5 | 8 | 8 | 6 | 4 | 4 | 4 | 5 | 7 | 7 | 7 | 7 | 6 | 7 | 5 | 6 | |
Swell 1 Height (m) Direction Period (s) | S 10 | S 10 | SSE 13 | SSE 17 | SSE 15 | SSE 15 | SSE 14 | SSE 14 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 14 | S 15 | SSE 16 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 |
 kJ | 267 | 188 | 418 | 1238 | 1214 | 1059 | 862 | 572 | 490 | 329 | 362 | 333 | 403 | 416 | 637 | 1154 | 2244 | 2609 | 2320 | 2197 | 2048 | 1581 | 1380 | 1401 |
Swell 2 Height (m) Direction Period (s) | S 21 | SSE 13 | SSE 18 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSE 17 |
| kJ | 9 | 92 | 286 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 789 |
Swell 3 Height (m) Direction Period (s) | — | SE 19 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | 95 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | W 3 | WNW 3 | W 3 | W 3 | W 3 | W 3 | WNW 4 | SSW 12 | S 14 | S 15 | S 16 | S 16 | S 15 | S 14 | SSE 14 | SSE 13 | SSE 13 | S 13 |
| kJ | — | — | — | — | — | — | 3 | 4 | 6 | 1 | 3 | 8 | 4 | 1338 | 1290 | 2276 | 4966 | 4524 | 4235 | 4054 | 3370 | 2693 | 2402 | 2400 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 33 | 33 | 33 | 33 | 33 | 33 | 33 | 58 | 57 | 57 | 33 | 46 | 33 | 57 | 57 | 46 | 470 | 470 | 702 | 691 | 460 | 460 | 448 | 57 |
Best forecast wave conditions in Rio Grande Do Sul | ||||||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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