
Surf Forecasts:
Montoya surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 6AM (local time) - 3.5ft (1.1m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Saturday 12 Sep, 9PM (local time) - 6.5ft (2.0m), 8s period, SSE swell with 498 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 9AM (local time) - 2.5ft (0.7m), 10s period with S 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 Monday (Sep 14) at 9AM. The primary swell is predicted to be 0.7m and 10s period with a secondary swell of 0.6m and 6s. 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 2.0m 8s and forecast to arrive on Saturday (Sep 12) at 9PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 6s period and expected on Friday (Sep 18) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9AM (Mon 14th Sep) | 2.5ft (0.7m) 10s |
| Best Surf | 6AM (Thu 17th Sep) | 3.5ft (1.1m) 9s |
| Most Powerful | 9PM (Sat 12th Sep) | 6.5ft (2.0m) 8s |
Table - best surf conditions forecast for Montoya over the next 16 days.
The Lowdown
Alright folks, let’s get real about the next two weeks here. The forecast for Montoya is a long, bumpy road with one clean little turn at the end. Gotta be honest, it’s mostly a waiting game.
First up, the water is running a little warmer than usual, about 1° above normal for this time of year. Not a big deal, but nice to know.
Honestly, the next week is a complete wash. We are looking at a huge gap, day after day of rubbish surf and onshore winds. From Friday the 11th all the way to the 23rd, there is nothing to get excited about. It starts with tiny 0.3m leftovers and no energy (32). Then the wind gets up on Saturday the 12th, and the swell jumps to 1.9m by the afternoon, but it’s all short-period, wind-blown junk. The energy hits 408, but it’s just a messy, lumpy, onshore mess.
Sunday the 13th still has some size, 1.5m with energy at 343, but the cross-onshore wind keeps it bumpy and poor. Not a single clean wave in the lot. The next few days have a couple of windows where the wind goes offshore, like Monday the 14th morning, but the swell is down to 0.7m and puny. It’s a tease, nothing more.
We get a bit of a pulse mid-week. Wednesday the 16th afternoon has 1.4m of SSE swell with a long 11-second period and proper energy (415), but the cross-onshore chops it all to pieces. The 17th has a cleaner look in the morning with 1.0m, but it’s still weak and marginal. This whole stretch is a total skunk. The energy is in the low hundreds, but the wind just kills it every time.
Then we hit a proper dead zone right around the 20th. The surf drops to 0.3m, the energy falls to single digits, and the flat spell continues. That’s a solid ten-plus day stretch without a single decent rideable wave.
Now, here’s where it gets a little wild. On the 22nd, the ocean gets angry. We’ve got a big pulse of 3.0m swell with strong energy (1067), but the wind is honking cross-onshore at 25-40 km/h. It’s a full-blown storm surf, completely blown out. Too big for the learners, and messy even for the experts. You’re better off watching from the beach.
That swell backs down a touch on the 23rd, but the onshores don't let up. It isn’t until Thursday the 24th that the winds finally swing around offshore. The swell has dropped to a much more friendly 1.1m from the SSE, with a decent 10-second period and energy at 205. This is the one, the highlight of the whole run. It’s clean, the winds are right, and it’s a proper, surfable size.
It won’t be pumping, but this 4ft of SSE groundswell with that light offshore flow will be the best we’ve seen in weeks. The period is good enough for some push, and there should be some fun, rideable waves. This is the day to clear your schedule.
After that, it fades out fast. The 25th still has clean conditions but the swell drops to 1ft. By the 26th, it’s back to nothing, a tiny 0.3ft blip with no energy left. That run from the 11th to the 23rd was brutal. The only real window is that Thursday the 24th. It’s a one-day show, but it should be a good one.
Signing off.
Rusty
Short Range ForecastMostly dry. Very mild (max 13°C on Fri morning, min 9°C on Sat night). Winds decreasing (fresh winds from the SSE on Sat afternoon, light winds from the E by Sun night). | Days 4-6 Weather SummaryMostly dry. Very mild (max 13°C on Tue morning, min 7°C on Tue night). Winds increasing (light winds from the ENE on Mon night, fresh winds from the SSW by Tue afternoon). | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | |||||||||||||||
AM | 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) | S 10 | S 9 | S 9 | SSE 4 | SSE 7 | SSE 8 | SSE 7 | S 11 | S 10 | S 10 | SSE 10 | SSE 10 | S 9 | S 11 | S 4 | S 6 | SSE 11 | SSE 10 | SSE 9 | SSE 9 | ENE 6 |
Wave Graph | |||||||||||||||||||||
17 | 15 | 14 | 37 | 405 | 456 | 237 | 227 | 122 | 100 | 102 | 94 | 24 | 20 | 24 | 69 | 415 | 325 | 154 | 124 | 70 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | on | on | on | cross-on | on | cross-on | cross-off | on | off | off | cross | cross-on | cross-on | cross-on | cross-off | cross-off | cross | cross-off |
High Tide | 8:08PM0.29m | 8:10AM0.32m | 8:58PM0.28m | 8:56AM0.34m | 9:45PM0.26m | 9:41AM0.34m | 10:31PM0.24m | 3:17AM0.19m | 11:16PM0.22m | 4:11AM0.19m | 00:02AM0.20m | 5:02AM0.19m | 00:52AM0.19m | ||||||||
Low Tide | 3:33PM0.03m | 4:02AM0.11m | 4:26PM0.01m | 00:27AM0.20m | 4:47AM0.12m | 5:16PM0.01m | 00:56AM0.19m | 5:29AM0.14m | 6:04PM0.01m | 6:10AM0.15m | 6:51PM0.02m | 6:50AM0.16m | 7:37PM0.03m | 7:27AM0.17m | 8:22PM0.05m | ||||||
6:45 | — | — | 6:43 | — | — | 6:41 | — | — | 6:39 | — | — | 6:39 | — | — | 6:37 | — | — | 6:35 | — | — | |
— | 6:27 | — | — | 6:28 | — | — | 6:28 | — | — | 6:29 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 13 | 13 | 12 | 12 | 10 | 10 | 10 | 10 | 10 | 12 | 12 | 11 | 13 | 12 | 8 | 11 | 12 | 10 | 15 | 17 | 14 |
Feels °C | 10 | 10 | 9 | 7 | 3 | 4 | 5 | 5 | 7 | 10 | 9 | 9 | 7 | 6 | 2 | 6 | 6 | 5 | 10 | 13 | 11 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 9 | S 9 | E 8 | ENE 6 | — | SSE 11 | S 11 | ESE 7 | S 10 | SSE 10 | SSE 10 | S 9 | E 8 | E 7 | S 6 | SSE 11 | SSE 10 | SSE 9 | SSE 9 | ENE 6 |
17 | 15 | 14 | 5 | 14 | — | 70 | 227 | 65 | 100 | 102 | 94 | 24 | 18 | 9 | 69 | 415 | 325 | 154 | 124 | 43 | |
Swell 2 Height (m) Direction Period (s) | E 10 | ENE 7 | ENE 8 | E 13 | E 12 | — | E 7 | E 6 | S 10 | ESE 6 | SE 6 | E 7 | E 8 | S 11 | S 10 | SSE 11 | ENE 8 | — | — | S 16 | SE 8 |
2 | 10 | 7 | 3 | 3 | — | 36 | 27 | 122 | 33 | 6 | 33 | 11 | 20 | 19 | 43 | 6 | — | — | 5 | 70 | |
Swell 3 Height (m) Direction Period (s) | E 14 | E 14 | E 13 | — | — | — | — | E 8 | — | ENE 8 | ENE 8 | ENE 8 | ESE 6 | S 13 | E 9 | ENE 8 | NE 10 | — | — | — | SSE 13 |
4 | 4 | 3 | — | — | — | — | 12 | — | 14 | 13 | 6 | 8 | 3 | 6 | 6 | 4 | — | — | — | 35 | |
Wind waves Height (m) Direction Period (s) | E 7 | ESE 3 | SE 4 | SSE 4 | SSE 7 | SSE 8 | SSE 7 | SE 7 | — | — | E 6 | NE 3 | WNW 3 | WSW 4 | S 4 | — | — | NE 3 | ENE 5 | E 6 | ENE 6 |
9 | 1 | 6 | 37 | 405 | 456 | 237 | 44 | — | — | 31 | 3 | 1 | 12 | 24 | — | — | 5 | 60 | 50 | 70 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 429 | 649 | 1030 | 945 | 534 | 421 | 236 | 431 | 1 | 0 | 109 | 0 | 68 | 901 | 534 | 109 | 61 | 1 | 1 | 1 | 0 |
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.










