Surf Forecasts:
Montoya surf forecast from 17 Aug 2026:
- Most powerful swell: Sunday 23 Aug, 6PM (local time) - 10ft (3.0m), 12s period, S swell with 2,222 kJ wave energy.
Best Forecast Surf Conditions for Montoya this week:
The most powerful waves expected at Montoya in the next 16 days are 3.0m 12s and forecast to arrive on Sunday (Aug 23) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Sunday (Aug 23) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 6PM (Sun 23rd Aug) | 10ft (3.0m) 12s |
Table - best surf conditions forecast for Montoya over the next 16 days.
The Lowdown
Alright, I'm lookin' at the charts for Montoya, and I gotta be straight with you – it's a tough read. For a spot that's a beach and point setup, exposed to the south, we're in for a long stretch of pretty average to downright ordinary conditions. The water's sittin' at about 53°, which is around normal for this time of year, so no surprises there.
Right off the bat, we've got a little something this Sunday afternoon. Swell is a weak 4ft out of the east, with a short period of 8 seconds, and the energy is low. The wind is a light cross-offshore from the WSW, keeping things clean. It's surfable, but it's pretty ordinary – a real "take what you can get" kind of session.
Then we hit a wall. From Monday the 17th right through to Thursday the 21st, it's a write-off. We're talking onshore winds, rain, and messy, choppy surf. The energy drops right off, with some days really low. There's nothing to get excited about there.
Things get a bit more interesting on Friday the 21st. A solid pulse of SSW swell rolls in, 8ft on the morning with a period of 8 seconds. The energy jumps up big time. But here's the kicker – the wind is howling from the SSW at 25 mph, making for a messy cross-shore chop. This isn't a paddle session. This setup looks way more interesting for a kite surfer.
Saturday the 22nd morning looks like our best bet in the whole outlook. The wind swings around to a clean, cross-offshore WNW breeze at 16 mph. We've got a 6ft south groundswell rolling in with a solid 11-second period, giving it some decent energy. This is a proper, long-period groundswell, which can be great on the point, though at a beach break it might break a bit straight. The conditions will be clean, making it the standout session by a long shot. Keep in mind, it's inconsistent here, so patience will be key. And with crowds being "sometimes" possible, you might have some company.
Sunday the 23rd gets heavy. An even bigger SSW swell pushes through, hitting 8ft on the afternoon with a very long 12-second period and a massive energy reading. That's a powerful swell. But again, the wind is a messy cross-shore from the SW at 22 mph. That's expert-only territory, and the quality is going to be poor with all that lumpy chop.
Monday the 24th sees the swell drop a bit to 7ft out of the south, still with that 11-second period. The wind is lighter, but still an onshore cross, making conditions a bit choppy but maybe manageable. It's marginal. From Tuesday the 25th onwards, it's a slow fade. The swell drops off, the wind stays messy, and by the end of the month, we're looking at tiny, weak waves.
So, to wrap it up: the one true standout is the Saturday morning of the 22nd. It's not perfect, but that clean, offshore wind and a solid groundswell is the best we're gonna see. After that, the big swells mid-week are for experts and kite surfers only. The rest of the window is a slow, flat decline.
Rusty.
Short Range ForecastHeavy rain (total 44mm), heaviest during Mon night. Very mild (max 14°C on Sun night, min 8°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 54mm), heaviest during Thu afternoon. Very mild (max 10°C on Wed night, min 5°C on Fri afternoon). Winds increasing (light winds from the ESE on Wed night, strong winds from the WSW by Sat morning). | ||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | ||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map | |||||||||||||||||||
Wave Height (m) Direction Period (s) | E 9 | E 10 | E 9 | SSE 6 | SSE 6 | SSE 6 | S 7 | S 7 | S 7 | E 8 | ESE 4 | SE 6 | S 6 | S 5 | S 7 | S 8 | S 11 | SW 6 | SSW 10 |
Wave Graph | |||||||||||||||||||
162 | 154 | 85 | 111 | 128 | 102 | 70 | 68 | 38 | 33 | 26 | 217 | 182 | 104 | 311 | 410 | 683 | 350 | 1133 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | on | on | cross-on | on | on | cross-on | on | cross-on | cross-on | on | on | cross | cross-on | cross-on | cross | cross-off | cross-off | cross-off |
High Tide | 10:53PM0.25m | 3:18AM0.20m | 11:44PM0.23m | 4:12AM0.20m | 00:37AM0.21m | 5:02AM0.19m | 12:31PM0.31m | 1:36AM0.19m | 5:52AM0.19m | 1:20PM0.30m | 2:50AM0.18m | 6:45AM0.19m | 2:12PM0.29m | 7:42AM0.19m | 3:08PM0.28m | ||||
Low Tide | 2:00AM0.20m | 6:44AM0.12m | 7:19PM0.02m | 7:26AM0.14m | 8:09PM0.03m | 3:09AM0.18m | 8:58PM0.04m | 3:45AM0.18m | 9:47PM0.06m | 4:18AM0.18m | 10:38PM0.07m | 9:43AM0.18m | 11:32PM0.07m | ||||||
— | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | |
6:07 | — | 6:08 | — | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | |
mm | 4 | 1 | 17 | 22 | — | — | — | — | — | 4 | 13 | 31 | 5 | — | — | 1 | — | — | — |
Temp °C | 14 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 9 | 10 | 8 | 8 | 8 | 8 | 9 | 9 |
Feels °C | 13 | 7 | 4 | 4 | 3 | 4 | 6 | 6 | 7 | 8 | 6 | 1 | 5 | 2 | 1 | 1 | -1 | 0 | 2 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 10 | E 9 | E 10 | ENE 9 | SSE 6 | S 7 | S 7 | S 7 | S 7 | S 7 | ENE 9 | ENE 8 | ENE 8 | SE 7 | E 8 | S 11 | SSE 11 | — |
162 | 154 | 85 | 70 | 29 | 100 | 70 | 68 | 38 | 25 | 16 | 8 | 11 | 12 | 55 | 1 | 683 | 156 | — | |
Swell 2 Height (m) Direction Period (s) | S 8 | S 8 | — | SW 5 | — | ENE 9 | E 6 | ENE 8 | ENE 8 | SE 13 | ENE 8 | ENE 9 | — | — | ENE 8 | ENE 8 | E 8 | — | — |
5 | 5 | — | 10 | — | 28 | 24 | 7 | 7 | 7 | 7 | 7 | — | — | 6 | 6 | 1 | — | — | |
Swell 3 Height (m) Direction Period (s) | S 11 | — | — | — | — | ENE 9 | ENE 9 | E 14 | SE 14 | SE 13 | SSW 7 | — | — | — | — | — | — | — | — |
2 | — | — | — | — | 46 | 15 | 4 | 7 | 7 | 4 | — | — | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSW 2 | SSE 4 | SSE 5 | SSE 6 | SSE 6 | SSE 6 | — | E 6 | E 5 | E 8 | ESE 4 | SE 6 | S 6 | S 5 | S 7 | S 8 | SSW 6 | SW 6 | SSW 10 |
1 | 22 | 56 | 111 | 128 | 102 | — | 16 | 14 | 33 | 26 | 217 | 182 | 104 | 311 | 410 | 349 | 350 | 1133 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 68 | 396 | 723 | 534 | 396 | 421 | 248 | 109 | 1 | 1 | 776 | 179 | 534 | 534 | 248 | 156 | 115 | 153 | 22 |
Best forecast wave conditions in Uruguay - South | |||||||||||||||||||
Best forecast wave conditions in Uruguay | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Montoya Surf forecast
The above surf forecast table for Montoya provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Montoya can be found by selecting the local surf guide option on the grey menu. Our Montoya surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Montoya) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Montoya may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Are you planning a holiday in Uruguay - South? If you are looking for accommodation near Montoya, camping, hotels and holiday cottages in Uruguay - South, consider staying in Maldonado which is 12 km (7 miles) away. Other places in and around Uruguay - South where you can find information about places to rent, and car hire include San Carlos which is 15 km (9 miles) away, Rocha, La Paloma and Minas.











