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Surf Forecasts:
La Posta surfForecast / South / Uruguay
48hr Weather and Surf, issued 8 am Wednesday 20 May 2026 -03Forecast update in hr min s Forecast update imminent
La Posta surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's La Posta sea temperature is
14.5° C
(Which is slightly cooler than normal)How big are the waves at La Posta today?
The current surf forecast for La Posta at 11AM is: 2.5m 15s primary swell from a South direction and 1.9m 16s secondary swell from a South-southeast direction (forecast issued at 08:00am May 20). The wind direction is predicted to be cross-onshore.
| Time (-03) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 6ft (1.9m) | 16s |
| Afternoon (20 May) | 8ft (2.5m) | 14s |
| Evening (20 May) | 8ft (2.5m) | 14s |
Table - waves today at La Posta. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Very mild (max 12°C on Wed morning, min 9°C on Thu night). Winds decreasing (fresh winds from the SSW on Wed morning, calm by Thu night). | ||||||||||||||||||||||||
Wednesday 20 | Thursday 21 | Friday 22 | Sat 23 | |||||||||||||||||||||
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 | 12 PM | 3 PM | 6 PM | 9 PM | 12 AM | 3 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SSE 14 | SSE 16 | S 15 | S 14 | S 14 | S 14 | S 13 | SSE 13 | S 13 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 | |
815 | 1740 | 3176 | 3042 | 2918 | 2662 | 2157 | 1808 | 1295 | 2455 | 2162 | 1750 | 1465 | 1249 | 1094 | 968 | 838 | 677 | 548 | 444 | 437 | 361 | 280 | 265 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | cross-on | glassy | glassy | glassy | cross-on | cross-on | cross-on | cross | cross-off | glassy | |
High Tide | 11:06AM0.17m | 4:30PM0.14m | 11:20PM0.32m | 11:52AM0.19m | 4:40PM0.14m | 00:24AM0.27m | 12:45PM0.20m | 1:43AM0.23m | ||||||||||||||||
Low Tide | 6:56AM0.03m | 2:15PM0.13m | 6:24PM0.13m | 7:50AM0.07m | 3:15PM0.14m | 7:39PM0.11m | 8:44AM0.10m | 8:51PM0.09m | ||||||||||||||||
 |  |  | |  | | | | | | | |  | | | | |  | | | | | | | |
 | 7:30 | — | — | — | — | — | — | — | 7:30 | — | — | — | — | — | — | — | 7:31 | — | — | — | — | — | — | 7:31 |
 | — | — | — | 5:40 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | 5:38 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 11 | 12 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 9 | 10 | 10 | 11 | 11 | 11 | 11 | 10 |
5 | 6 | 4 | 4 | 3 | 3 | 4 | 5 | 5 | 6 | 7 | 7 | 8 | 7 | 7 | 9 | 7 | 9 | 7 | 9 | 8 | 8 | 9 | 8 | |
Swell 1 Height (m) Direction Period (s) | SSE 14 | SSE 16 | — | — | — | — | — | SSE 13 | S 13 | SSE 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 11 | SSE 11 |
 kJ | 815 | 1740 | — | — | — | — | — | 1808 | 1295 | 2455 | 2162 | 1750 | 1465 | 1249 | 1094 | 968 | 838 | 677 | 548 | 444 | 437 | 361 | 280 | 265 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | SSE 17 | SSE 17 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 313 | 798 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 6 | SSW 6 | S 15 | S 14 | S 14 | S 14 | S 13 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | 84 | 113 | 3176 | 3042 | 2918 | 2662 | 2157 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 159 | 158 | 905 | 683 | 683 | 532 | 245 | 245 | 245 | 156 | 118 | 71 | 71 | 71 | 159 | 0 | 0 | 0 | 233 | 233 | 422 | 2 | 0 | 0 |
Best forecast wave conditions in Uruguay - South | ||||||||||||||||||||||||
Best forecast wave conditions in Uruguay | ||||||||||||||||||||||||
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