Surf Forecasts:
San Mateo surf forecast from 31 Aug 2026:
- Most powerful swell: Friday 4 Sep, 7PM (local time) - 6ft (1.8m), 16s period, SW swell with 1,675 kJ wave energy.
Best Forecast Surf Conditions for San Mateo this week:
The most powerful waves expected at San Mateo in the next 16 days are 1.8m 16s and forecast to arrive on Friday (Sep 04) at 7PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 6s period and expected on Monday (Aug 31) at 10PM.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 7PM (Fri 4th Sep) | 6ft (1.8m) 16s |
Table - best surf conditions forecast for San Mateo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming our way.
Honestly, I gotta be straight with you – this is a tough stretch. We’re looking at a solid two-week run where the surf is just never really on. The wind is a constant problem, and we’re not getting the right angle to clean things up. It’s one of those periods where you’ll be checking the cam every morning and shaking your head.
The first hint of something rideable shows up on the morning of Tuesday, September 3rd, at San Mateo. We’re looking at a 4ft swell from the SW, with a long period of 18 seconds. The combined wave energy is moderate (772). The wind is light and cross-shore, which is about as good as it’s going to get, but it’s still only a marginal call. The morning of Friday, September 5th, is the only real standout to even consider. The swell bumps up to 6ft from the SW (16 seconds), and the combined energy climbs to a strong 1498. That’s the most push we’ll see all forecast. The morning wind is a gentle cross-shore, so it’ll be a little bumpy but workable. This is a long period groundswell, so at a point break like San Mateo, it should set up with some nice lines, but it’s going to be a bit inconsistent. It’s only for advanced surfers at that size. After that, it’s a slow fade, with the swell dropping and the wind turning onshore every afternoon, ruining the chance for a clean session.
So, if you’re itching to get wet, the only real window is the morning of Friday, September 5th. It’s not perfect, but it’s the best we’ve got. The rest of the 16 days are a write-off, with a long gap of poor surf and onshore wind.
Stay patient, keep your eye on the charts. It’ll turn eventually.
- Rusty
Short Range ForecastMostly dry. Warm (max 26°C on Mon morning, min 24°C on Mon afternoon). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Fri morning, min 24°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 17 | SW 17 | SW 16 | SW 19 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 300 | 286 | 240 | 200 | 235 | 290 | 222 | 248 | 296 | 758 | 702 | 1312 | 1464 | 1314 | 1281 | 1108 | 825 | 736 | 632 | 492 | 340 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 5:49PM2.46m | 6:05AM2.60m | 6:28PM2.40m | 6:43AM2.52m | 7:12PM2.31m | 7:26AM2.40m | 8:03PM2.18m | 8:18AM2.26m | 9:06PM2.07m | 9:24AM2.12m | 10:26PM2.01m | 10:46AM2.06m | 11:52PM2.06m | ||||||||
Low Tide | 11:44AM0.25m | 11:53PM0.31m | 12:21PM0.26m | 00:31AM0.39m | 1:02PM0.31m | 1:14AM0.50m | 1:49PM0.40m | 2:05AM0.64m | 2:46PM0.51m | 3:10AM0.77m | 3:58PM0.59m | 4:33AM0.85m | 5:20PM0.59m | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | — | 6:25 | — | — | 6:25 | — | — | 6:24 | — | — | 6:24 | — | — | 6:24 | — | — | 6:23 | — | — | 6:23 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 24 | 26 | 25 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 27 | 26 | 24 | 27 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 25 | 24 | 24 | 27 | 25 | 26 | 29 | 26 | 24 | 28 | 26 | 24 | 28 | 26 | 24 | 27 | 26 | 25 | 28 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SW 12 | SW 13 | SW 12 | SW 12 | SW 12 | SW 11 | SW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 14 | SW 14 | SW 13 |
| kJ | 300 | 286 | 240 | 200 | 235 | 203 | 167 | 228 | 179 | 758 | 702 | 1312 | 1464 | 1314 | 1281 | 1108 | 825 | 736 | 632 | 492 | 340 |
Swell 2 Height (m) Direction Period (s) | SW 20 | WSW 19 | SW 19 | SW 18 | SW 6 | SW 7 | SW 17 | SW 16 | SW 15 | SW 11 | SW 14 | WNW 11 | WNW 10 | WNW 9 | WNW 9 | WNW 11 | WNW 10 | WNW 10 | SSW 5 | SSW 6 | SW 6 |
| kJ | 15 | 36 | 55 | 82 | 56 | 53 | 222 | 248 | 221 | 119 | 114 | 11 | 10 | 8 | 8 | 23 | 10 | 21 | 18 | 21 | 15 |
Swell 3 Height (m) Direction Period (s) | NW 11 | NW 11 | NW 11 | NW 11 | SW 18 | SW 17 | SSW 7 | SW 20 | SW 19 | WNW 12 | WNW 11 | — | — | — | NW 11 | — | W 8 | SW 22 | WNW 10 | WNW 10 | SW 19 |
| kJ | 5 | 5 | 5 | 5 | 112 | 290 | 37 | 188 | 296 | 14 | 13 | — | — | — | 5 | — | 5 | 18 | 18 | 18 | 133 |
Wind waves Height (m) Direction Period (s) | SSW 5 | SW 6 | SW 6 | SW 6 | — | — | — | — | — | — | SW 11 | SW 4 | SSW 5 | SW 6 | SW 10 | — | SW 6 | SW 5 | — | — | — |
| kJ | 33 | 80 | 88 | 58 | — | — | — | — | — | — | 169 | 12 | 25 | 33 | 96 | — | 31 | 25 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 7 | 941 | 141 | 141 | 912 | 141 | 7 | 1050 | 7 | 141 | 1050 | 303 | 7 | 1059 | 450 | 181 | 141 | 111 | 141 | 820 |
Best forecast wave conditions in Manabi | |||||||||||||||||||||
Best forecast wave conditions in Ecuador | |||||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our San Mateo surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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