Surf Forecasts:
San Mateo surf forecast from 13 Sep 2026:
- Best quality surf: Tuesday 15 Sep, 4AM (local time) - 2.5ft (0.8m), 17s period, SW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 4AM (local time) - 4ft (1.2m), 15s period, SW swell with 631 kJ wave energy.
- Next surfable swell (1★+): Tuesday 15 Sep, 4AM (local time) - 2.5ft (0.8m), 17s 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 Tuesday (Sep 15) at 4AM. The primary swell is predicted to be 0.8m and 17s period. 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 15s and forecast to arrive on Wednesday (Sep 16) at 4AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 7s period and expected on Sunday (Sep 13) at 4PM.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Tue 15th Sep) | 2.5ft (0.8m) 17s |
| Best Surf | 4AM (Tue 15th Sep) | 2.5ft (0.8m) 17s |
| Most Powerful | 4AM (Wed 16th Sep) | 4ft (1.2m) 15s |
Table - best surf conditions forecast for San Mateo over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s take a look at what’s coming up for San Mateo over the next couple of weeks.
Right off the bat, we’ve got a bit of a slow start. The first week is going to test your patience. The swell is tiny, mostly around 1ft to 3ft, and the wind is a real problem. It's cross or cross-onshore pretty much every afternoon, turning the ocean into a messy, choppy disaster. The mornings offer a glimmer of hope with cleaner conditions on Tuesday the 15th and Wednesday the 16th. The energy is there – but it’s just not enough to get excited about. The water is sitting at a balmy 81°, which is far warmer than normal for this time of year.
Honestly, it’s not until late in the period that things start to look like they might fire. The standout window is the final weekend. On Saturday the 26th, the morning is looking glassy – dead calm wind – with a 3ft swell pushing in from the SW. But the real gem is Sunday the 27th morning. We’ve got a 4ft SW groundswell with a period of 13 seconds and glassy conditions. The combined energy is pumping. That is the pick of the forecast, hands down. For a point break like San Mateo, that long-period groundswell with no wind is a recipe for some proper lines.
So, you’ve got a long, flat week ahead, but hang in there. That Sunday the 27th is looking like the real deal. Keep an eye on it, but remember, it’s a long way out.
Rusty.
Short Range ForecastSome drizzle, heaviest during Mon night. Warm (max 27°C on Sun morning, min 25°C on Sun afternoon). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Wed night. Warm (max 27°C on Wed morning, min 24°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | |||||||||||||||
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 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 21 | SW 20 | SW 19 |
Wave Graph  | |||||||||||||||||||||
 kJ | 131 | 131 | 111 | 197 | 206 | 432 | 366 | 361 | 468 | 301 | 346 | 289 | 250 | 171 | 168 | 166 | 163 | 151 | 274 | 239 | 369 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross-off | cross-on | cross-on | cross-off | cross-on | cross | cross | cross | cross | cross | cross-on | cross | cross | cross-on | cross |
High Tide | 5:14PM2.59m | 5:29AM2.67m | 5:53PM2.51m | 6:04AM2.53m | 6:31PM2.37m | 6:40AM2.37m | 7:10PM2.21m | 7:18AM2.19m | 7:53PM2.04m | 8:00AM2.01m | 8:46PM1.88m | 8:54AM1.86m | 9:57PM1.78m | ||||||||
Low Tide | 11:06AM0.12m | 11:19PM0.22m | 11:43AM0.17m | 11:56PM0.33m | 12:19PM0.26m | 00:33AM0.48m | 12:57PM0.39m | 1:12AM0.64m | 1:37PM0.55m | 1:54AM0.81m | 2:25PM0.70m | 2:48AM0.96m | 3:26PM0.82m | ||||||||
 |  |  | | |  | | | | | |  |  | | | | | | | | | |
 | 6:16 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | — | 6:22 | — | — | 6:21 | — | — | 6:21 | — | — | 6:21 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — |
mm | — | — | — | — | — | 1 | — | — | — | — | — | 4 | 1 | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 25 | 27 | 27 | 25 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 25 | 27 | 27 | 25 | 27 | 27 | 25 |
Feels °C | 28 | 25 | 25 | 29 | 28 | 27 | 30 | 28 | 28 | 28 | 27 | 27 | 28 | 27 | 26 | 28 | 28 | 27 | 28 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | SW 12 | SW 12 | SW 12 | SSW 6 | SW 18 | SW 18 | SW 16 | SW 16 | SW 16 | SW 15 | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 13 | SW 13 | SW 12 | SW 12 | SW 12 | SW 19 |
| kJ | 95 | 71 | 50 | 49 | 206 | 432 | 366 | 361 | 468 | 301 | 346 | 289 | 250 | 171 | 168 | 166 | 163 | 151 | 141 | 139 | 369 |
Swell 2 Height (m) Direction Period (s) | SW 19 | SW 19 | SW 18 | SW 18 | SW 11 | SW 11 | SSW 7 | SW 13 | W 11 | SSW 9 | WSW 23 | SW 22 | SW 21 | SW 21 | SW 20 | SW 20 | SW 20 | SW 18 | SSW 6 | SW 20 | SW 12 |
| kJ | 131 | 131 | 111 | 197 | 43 | 29 | 40 | 83 | 2 | 8 | 53 | 77 | 72 | 71 | 102 | 97 | 134 | 51 | 28 | 239 | 134 |
Swell 3 Height (m) Direction Period (s) | WNW 11 | WNW 11 | WNW 10 | SW 12 | SW 15 | SW 13 | SW 13 | W 12 | NW 16 | SW 24 | NW 11 | WNW 12 | WNW 13 | WNW 13 | WNW 11 | WNW 12 | WNW 12 | SW 21 | SW 21 | W 11 | NW 11 |
| kJ | 11 | 11 | 10 | 47 | 54 | 28 | 44 | 11 | 10 | 22 | 5 | 14 | 16 | 17 | 12 | 14 | 14 | 72 | 274 | 2 | 5 |
Wind waves Height (m) Direction Period (s) | SSW 7 | SSW 7 | SSW 6 | — | SSW 6 | SW 7 | — | SSW 10 | SW 7 | SSW 7 | SW 4 | SSW 5 | SSW 5 | SSW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | — | SW 6 | SW 6 |
| kJ | 113 | 123 | 65 | — | 49 | 44 | — | 125 | 38 | 35 | 21 | 28 | 29 | 33 | 33 | 47 | 63 | 41 | — | 33 | 34 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 102 | 938 | 141 | 7 | 805 | 7 | 0 | 912 | 141 | 0 | 912 | 102 | 7 | 916 | 102 | 7 | 912 | 7 | 7 | 1115 | 141 |
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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.
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