Surf Forecasts:
Montoya surf forecast from 18 Aug 2026:
- Best quality surf: Tuesday 25 Aug, 6AM (local time) - 4.5ft (1.3m), 12s period, SSE swell with cross-offshore winds.
- Most powerful swell: Sunday 23 Aug, 9PM (local time) - 7.5ft (2.3m), 14s period, SSE swell with 2,056 kJ wave energy.
- Next surfable swell (1★+): Tuesday 25 Aug, 6AM (local time) - 4.5ft (1.3m), 12s period with SSE swell.
Best Forecast Surf Conditions for Montoya this week:
The surf forecast for Montoya over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 6AM. The primary swell is predicted to be 1.3m and 12s period with a secondary swell of 0.6m and 4s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Montoya in the next 16 days are 2.3m 14s and forecast to arrive on Sunday (Aug 23) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Saturday (Aug 22) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 25th Aug) | 4.5ft (1.3m) 12s |
| Best Surf | 6AM (Tue 25th Aug) | 4.5ft (1.3m) 12s |
| Most Powerful | 9PM (Sun 23rd Aug) | 7.5ft (2.3m) 14s |
Table - best surf conditions forecast for Montoya over the next 16 days.
The Lowdown
Alright, Rusty here again. Same picture, just in feet and miles per hour. The 16-day forecast for Montoya is a tough one to sell. The first real chance of a surf doesn’t come until Monday the 24th of August, and it’s only marginal. Before that, you’ve got a solid week of flat or downright ugly conditions.
From Tuesday the 18th through Sunday the 23rd, it’s pretty much a bust. Winds are onshore or messy from the SE and S, gusting between 9 and 22 mph. Swell heights are tiny—2ft to 5ft—with very short periods. The combined energy is low, mostly under 100, meaning weak, choppy surf. Water temp is 53°F, about 0.7°F warmer than normal, so nothing unusual.
Monday the 24th morning brings a 6ft SSE swell with a 13-second period, and combined energy of 1174. That’s moderate to strong energy, but the wind is a light cross-onshore at 10 mph, so it’ll have some chop. The forecast says “marginal,” so don’t expect perfection.
The best of the bunch looks like Tuesday the 25th afternoon. Winds turn cross-off from the north at 6 mph, and you get a 3ft SSE swell with an 11-second period (energy 274). The report says “expect good surf conditions.” It’ll be clean, small, but rideable. Wednesday the 26th morning is even cleaner—dead calm wind, and a 3ft SE swell with a very long 15-second period (energy 399). That long period might make it a bit straight on the beach, but the point might handle it.
After that, it’s back to small, weak, and onshore again through the end of August and into September. The combined energy drops way down, and there’s nothing else worth paddling for.
For beginners: the biggest swell hits 8ft on the 23rd, but with a 22 mph cross-onshore wind, it’s not safe or fun. For experts: nothing gets over 8ft. Really, the only standout is that clean little window on the 25th and 26th. Set your expectations low.
Rusty.
Short Range ForecastHeavy rain (total 23mm), heaviest during Thu afternoon. Very mild (max 10°C on Wed afternoon, min 7°C on Tue night). Winds increasing (light winds from the ESE on Wed morning, fresh winds from the S by Fri morning). | Days 5-7 Weather SummaryMostly dry. Very mild (max 10°C on Sat night, min 4°C on Sun night). Winds decreasing (fresh winds from the S on Sun morning, light winds from the S by Sun night). | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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) | SSE 6 | S 7 | S 7 | S 7 | S 7 | E 8 | SE 4 | SE 5 | S 6 | S 7 | S 7 | S 9 | S 10 | S 10 | S 11 | S 13 | SSE 14 | SSE 13 | SSE 13 | SSE 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 131 | 69 | 50 | 38 | 23 | 34 | 11 | 29 | 160 | 229 | 302 | 349 | 386 | 530 | 1095 | 1755 | 2027 | 1174 | 903 | 655 |
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 | on | cross | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 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 | 6:10AM0.18m | 5:03PM0.28m | |||||
Low Tide | 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 | 8:42AM0.18m | 1:21AM0.08m | |||||||
 |  |  | |  |  |  |  | | | | |  |  | | | | | | | |
 | — | — | 7:15 | — | — | 7:13 | — | — | 7:13 | — | — | 7:11 | — | — | 7:09 | — | — | 7:09 | — | — |
 | 6:09 | — | — | 6:09 | — | — | 6:10 | — | — | 6:12 | — | — | 6:13 | — | — | 6:13 | — | — | 6:14 | — |
mm | 1 | — | — | — | — | 8 | 13 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 9 | 8 | 8 | 8 | 8 | 10 | 8 | 7 | 6 | 6 | 7 | 6 |
Feels °C | 6 | 6 | 6 | 7 | 7 | 8 | 6 | 6 | 3 | 1 | 2 | 2 | 1 | 4 | 0 | 1 | 2 | 2 | 2 | 0 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | S 7 | S 7 | S 7 | S 7 | S 7 | ENE 8 | SE 5 | E 6 | E 7 | E 8 | S 9 | S 10 | E 9 | NE 10 | — | SSE 14 | SSE 13 | SSE 13 | SSE 12 |
| kJ | 131 | 69 | 50 | 38 | 23 | 14 | 7 | 29 | 21 | 8 | 4 | 349 | 386 | 1 | 4 | — | 2027 | 1174 | 903 | 655 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | ESE 6 | E 5 | E 6 | E 8 | SE 13 | SSW 6 | E 8 | E 11 | — | — | SSE 13 | E 8 | — | — | — | — | — | — | — |
| kJ | 28 | 26 | 21 | 15 | 22 | 6 | 4 | 1 | 2 | — | — | 33 | 1 | — | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | ENE 9 | E 14 | SE 14 | SE 13 | SE 13 | SE 12 | SE 12 | — | — | — | E 8 | — | — | — | — | — | — | — | — |
| kJ | — | 15 | 4 | 7 | 7 | 6 | 6 | 6 | — | — | — | 1 | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | E 8 | SE 4 | SW 3 | S 6 | S 7 | S 7 | — | WSW 4 | S 10 | S 11 | S 13 | — | — | — | NE 3 |
| kJ | — | — | — | — | — | 34 | 11 | 2 | 160 | 229 | 302 | — | 17 | 530 | 1095 | 1755 | — | — | — | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 421 | 261 | 282 | 1 | 1 | 66 | 931 | 690 | 534 | 534 | 236 | 236 | 153 | 68 | 534 | 534 | 68 | 14 | 66 | 1 |
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.
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