Surf Forecasts:
Montoya surf forecast from 18 Aug 2026:
- Most powerful swell: Monday 24 Aug, 9AM (local time) - 6.5ft (2.0m), 14s period, SSE swell with 1,461 kJ wave energy.
Best Forecast Surf Conditions for Montoya this week:
The most powerful waves expected at Montoya in the next 16 days are 2.0m 14s and forecast to arrive on Monday (Aug 24) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 10s period and expected on Tuesday (Aug 18) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 9AM (Mon 24th Aug) | 6.5ft (2.0m) 14s |
Table - best surf conditions forecast for Montoya over the next 16 days.
The Lowdown
Righto, let’s get into it. Rusty here, and I’ve got the goods on Montoya for the next couple of weeks.
First off, I gotta be straight with ya—this is a rough patch. The forecast is a long stretch of poor surf conditions with no real standouts for a while. It’s gonna be a quiet start. We’re looking at a gap from now until about Monday the 24th of August where there’s barely a wave worth paddling for. That’s a solid week of small, choppy, onshore junk. The swell energy is weak for most of that, with readings under 150 (moderate wave energy) and down to just 30 (weak wave energy). The wind is mostly cross-onshore or onshore from the SSE and ESE, keeping everything messy.
Now, if you’re a patient soul, there is a flicker of hope late in the window. The standout here is Montoya itself. It's a beach and point setup, exposed to the S swell direction, which the guidance reckons is the optimum. Keep that in mind.
The first day that actually shows any potential is Monday, 24 August. Come the morning, we’ve got a solid 7ft swell out of the SSE, with a very long period of 14 seconds. That’s a proper groundswell. The combined energy jumps to 1461 (strong to very strong wave energy)—that’s a lot of juice. The wind is light from the S, cross-onshore, but with that little breeze and small wind ripples, it could clean up. This one is rated as marginal for tide or conditions, but for the experienced crew, this could be a goer. That 7ft is pushing into expert territory, so beginners sit this one out. The long period will make for well-shaped, powerful waves at the point, but expect long lulls between sets.
By Tuesday, 25 August morning, the swell drops to 4ft from the SSE with an 11-second period (moderate energy at 349). The wind swings to a light NNE cross-offshore, which is clean. The forecast says “expect good surf conditions,” but the score is low, so keep expectations in check. It’s a smaller, cleaner option after the big Monday.
After that, it fades again. By Wednesday and Thursday the swell is tiny (1ft to 3ft), and the energy is weak. The water temp is hanging around 52°F with a 0.5°F anomaly, so it’s about average for the time of year, which means it’s cold—don’t forget a hood.
Bottom line: The only real standout is the Monday the 24th morning session. Big SSE groundswell, powerful, but it’s for the experts only with clean-ish wind. Tuesday morning is a smaller, cleaner follow-up if the Monday is too gnarly. The rest is pretty average, so don’t plan a trip around it unless you’re keen for a paddle and a patience test.
Rusty.
Short Range ForecastHeavy rain (total 22mm), heaviest during Mon night. Very mild (max 11°C on Wed afternoon, min 7°C on Tue night). Winds decreasing (fresh winds from the SSE on Mon night, light winds from the S by Tue night). | Days 5-7 Weather SummaryModerate rain (total 13mm), heaviest on Thu afternoon. Very mild (max 11°C on Thu night, min 8°C on Fri afternoon). Winds increasing (light winds from the ESE on Thu afternoon, strong winds from the SW by Sat morning). | |||||||||||||||||||
Mon 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | ||||||||||||||
PM | 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 10 | SSE 6 | SSE 6 | SSE 6 | S 6 | S 7 | S 7 | S 7 | S 7 | ESE 5 | SE 6 | S 5 | S 6 | S 7 | SSW 6 | SSW 7 | S 11 | S 10 | S 10 | S 12 |
Wave Graph | ||||||||||||||||||||
94 | 131 | 150 | 127 | 64 | 51 | 39 | 23 | 14 | 37 | 66 | 95 | 132 | 153 | 253 | 472 | 795 | 609 | 443 | 723 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-off | cross | cross-off | cross | cross | cross-on |
High Tide | 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 | 5:58AM0.18m | 4:07PM0.28m | |||||
Low Tide | 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 | 6:50AM0.18m | 00:27AM0.08m | |||||||
— | — | 7:16 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | |
6:08 | — | — | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | |
mm | 4 | 15 | — | — | — | — | — | — | 3 | 11 | 2 | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 9 | 9 | 9 | 8 | 9 | 11 | 10 | 10 | 10 | 11 | 10 | 9 | 8 | 8 | 8 | 9 | 9 | 9 | 8 |
Feels °C | 6 | 3 | 4 | 6 | 5 | 6 | 8 | 7 | 8 | 8 | 9 | 6 | 1 | -1 | -1 | -1 | 3 | 0 | 2 | 2 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | ENE 9 | ENE 9 | S 6 | S 7 | S 7 | S 7 | S 7 | ENE 8 | SE 6 | E 7 | ESE 7 | ESE 7 | S 12 | E 8 | E 9 | E 10 | E 10 | S 12 |
94 | 51 | 29 | 28 | 64 | 51 | 39 | 23 | 14 | 7 | 66 | 37 | 15 | 9 | 99 | 1 | 2 | 2 | 2 | 723 | |
Swell 2 Height (m) Direction Period (s) | S 9 | SW 6 | — | — | E 6 | ENE 9 | ESE 5 | ENE 8 | ENE 8 | SE 12 | S 7 | E 11 | ENE 8 | SSE 11 | E 6 | E 6 | — | — | — | E 10 |
2 | 5 | — | — | 24 | 16 | 9 | 7 | 7 | 6 | 1 | 3 | 6 | 25 | 3 | 1 | — | — | — | 2 | |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | ENE 9 | SE 5 | ENE 9 | SE 13 | SE 13 | SE 12 | E 12 | — | S 11 | E 8 | E 8 | — | — | — | — | — |
— | — | — | — | 15 | 1 | 15 | 7 | 6 | 6 | 3 | — | 2 | 5 | 1 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | SSE 5 | SSE 6 | SSE 6 | SSE 6 | — | E 6 | — | ESE 5 | ESE 4 | ESE 5 | — | S 5 | S 6 | S 7 | SSW 6 | SSW 7 | S 11 | S 10 | S 10 | — |
50 | 131 | 150 | 127 | — | 17 | — | 10 | 10 | 37 | — | 95 | 132 | 153 | 253 | 472 | 795 | 609 | 443 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 534 | 534 | 396 | 156 | 248 | 282 | 1 | 3 | 931 | 723 | 22 | 723 | 661 | 236 | 153 | 248 | 68 | 153 | 156 | 248 |
Best forecast wave conditions in Uruguay - South | ||||||||||||||||||||
Best forecast wave conditions in Uruguay | ||||||||||||||||||||
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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.











