
Surf Forecasts:
San Mateo surf forecast from 6 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 7AM (local time) - 3ft (0.9m), 18s period, SW swell with cross-offshore winds.
- Most powerful swell: Thursday 10 Sep, 1AM (local time) - 4ft (1.2m), 17s period, SW swell with 831 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 7AM (local time) - 3ft (0.9m), 18s period with SW swell.
Best Forecast Surf Conditions for San Mateo this week:
The surf forecast for San Mateo over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 09) at 7AM. The primary swell is predicted to be 0.9m and 18s period with a secondary swell of 0.7m and 13s. Another secondary swell of 0.6m and 5s is also forecast. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at San Mateo in the next 16 days are 1.2m 17s and forecast to arrive on Thursday (Sep 10) at 1AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Thursday (Sep 10) at 10AM.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 7AM (Wed 9th Sep) | 3ft (0.9m) 18s |
| Best Surf | 7AM (Wed 9th Sep) | 3ft (0.9m) 18s |
| Most Powerful | 1AM (Thu 10th Sep) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for San Mateo over the next 16 days.
The Lowdown
Alright, let's switch over to the old measurements for my American mates. Same story, different numbers.
We're in for a dry spell over the next couple of weeks. The main spot on the menu is San Mateo, a point break that faces NW. Word is, the water is cookin' at 81°F, which is a wild 9°F warmer than average for this time of year. That's some tropical bath water.
Now, San Mateo is a sneaky, *inconsistent* break, so you gotta know when to go. The first few days, from Sunday the 6th through Tuesday the 8th, are pretty much a write-off. The wind is all over the place – cross and cross-on – chopping up a weak little swell. You're lookin' at waves around 3ft to 5ft, short period, and the energy is low to moderate. It looks more like a day for the kite gear than a surfboard.
Things get a bit more interesting mid-week. On Wednesday the 9th and Thursday the 10th, the swell period jumps up, giving us some proper groundswell with nice shape for the point. Wave heights stay around 3ft to 4ft, but the energy gets solid. Mornings are the key with light cross-shore breezes before the onshore wind kicks up in the afternoon.
Then, from Friday the 11th all the way to Monday the 21st, it flat-lines. We're talking tiny 2ft to 3ft waves, long period but barely breaking. The energy just drops out completely, and the wind stays messy. It's a long stretch of flat, even for an inconsistent spot like this.
So, if you're itching for a surf, mark your calendar for Thursday morning, the 10th of September. It's the only window where a modest bump of 4ft swell with a good 16-second interval meets light morning winds. You might get a few clean, lined-up waves on the point before the afternoon chop ruins it. Don't be surprised if a few other locals have the same thought – crowds are *sometimes* a factor.
Other than that, keep your board waxed and your eyes on the forecast. This is a slow period.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 27°C on Mon morning, min 24°C on Sun night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | |||||||||||||||
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) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 16 | SW 16 | SW 15 | SW 15 | SW 18 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
Wave Graph | |||||||||||||||||||||
632 | 492 | 340 | 330 | 330 | 318 | 352 | 390 | 525 | 437 | 410 | 831 | 728 | 719 | 492 | 404 | 398 | 285 | 173 | 171 | 168 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 10:46AM2.06m | 11:52PM2.06m | 12:10PM2.10m | 1:06AM2.22m | 1:21PM2.23m | 2:04AM2.41m | 2:19PM2.38m | 2:53AM2.58m | 3:09PM2.51m | 3:36AM2.71m | 3:53PM2.59m | 4:15AM2.76m | 4:35PM2.62m | ||||||||
Low Tide | 5:20PM0.59m | 6:02AM0.81m | 6:37PM0.51m | 7:16AM0.67m | 7:40PM0.37m | 8:15AM0.49m | 8:33PM0.25m | 9:05AM0.33m | 9:19PM0.16m | 9:48AM0.20m | 10:01PM0.12m | 10:28AM0.13m | 10:41PM0.14m | ||||||||
6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:23 | — | — | 6:23 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 25 | 27 | 27 | 25 | 27 | 26 | 25 | 27 | 26 | 25 | 27 | 26 | 25 | 27 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 26 | 27 | 28 | 28 | 26 | 29 | 26 | 26 | 29 | 26 | 25 | 28 | 26 | 26 | 28 | 26 | 27 | 28 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 15 | SW 15 | SW 18 | SW 15 | SW 17 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 |
632 | 492 | 340 | 330 | 330 | 269 | 205 | 390 | 525 | 437 | 410 | 831 | 728 | 719 | 492 | 404 | 398 | 285 | 173 | 171 | 168 | |
Swell 2 Height (m) Direction Period (s) | WNW 10 | WNW 9 | SW 5 | SW 18 | SW 18 | SW 16 | SW 16 | SW 12 | SW 19 | SW 14 | SW 18 | NW 11 | NW 11 | NW 11 | SW 7 | SW 8 | NW 10 | SW 8 | SSW 8 | WNW 10 | SW 16 |
9 | 8 | 13 | 199 | 304 | 318 | 352 | 139 | 184 | 261 | 375 | 30 | 30 | 29 | 46 | 57 | 26 | 62 | 52 | 20 | 42 | |
Swell 3 Height (m) Direction Period (s) | SW 21 | SW 21 | SW 19 | WNW 10 | WNW 11 | WNW 10 | WNW 10 | WNW 10 | NW 12 | NW 12 | NW 11 | — | — | WNW 11 | NW 10 | NW 10 | SW 19 | NW 10 | NW 11 | WSW 21 | WNW 10 |
18 | 68 | 184 | 22 | 22 | 20 | 9 | 20 | 35 | 34 | 31 | — | — | 22 | 28 | 26 | 14 | 28 | 29 | 45 | 10 | |
Wind waves Height (m) Direction Period (s) | SW 5 | SW 5 | — | — | — | — | SW 4 | SSW 4 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 6 | — | — | SW 8 | — | — | SW 8 | SSW 8 |
25 | 20 | — | — | — | — | 9 | 15 | 19 | 15 | 44 | 40 | 60 | 62 | — | — | 62 | — | — | 60 | 93 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 141 | 46 | 141 | 141 | 7 | 7 | 912 | 11 | 7 | 1050 | 310 | 181 | 913 | 141 | 141 | 141 | 7 | 7 | 938 | 310 |
Best forecast wave conditions in Manabi | |||||||||||||||||||||
Best forecast wave conditions in Ecuador | |||||||||||||||||||||
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Information about the San Mateo Surf forecast
The above surf forecast table for San Mateo provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at San Mateo can be found by selecting the local surf guide option on the grey menu. Our San Mateo 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 (San Mateo) 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 San Mateo 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 Manabi? If you are looking for accommodation near San Mateo, camping, hotels and holiday cottages in Manabi, consider staying in Manta which is 11 km (7 miles) away. Other places in and around Manabi where you can find information about places to rent, and car hire include Montecristi which is 21 km (13 miles) away, Portoviejo, Jipijapa and Sucre.










