Surf Forecasts:
San Mateo surf forecast from 8 Aug 2026:
- Best quality surf: Saturday 15 Aug, 7AM (local time) - 4.5ft (1.3m), 16s period, SW swell with cross-offshore winds.
- Most powerful swell: Saturday 15 Aug, 10AM (local time) - 5ft (1.6m), 15s period, SW swell with 1,185 kJ wave energy.
- Next surfable swell (1★+): Thursday 13 Aug, 4AM (local time) - 2ft (0.6m), 13s 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 Thursday (Aug 13) at 4AM. The primary swell is predicted to be 0.6m and 13s 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 1.6m 15s and forecast to arrive on Saturday (Aug 15) at 10AM. 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 5s period and expected on Saturday (Aug 08) at 10AM.
| Wave Type | Time (-05) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 4AM (Thu 13th Aug) | 2ft (0.6m) 13s |
| Best Surf | 7AM (Sat 15th Aug) | 4.5ft (1.3m) 16s |
| Most Powerful | 10AM (Sat 15th Aug) | 5ft (1.6m) 15s |
Table - best surf conditions forecast for San Mateo over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s in the water for the next couple of weeks.
Honestly, the first week is a bit of a bust. The wind is going to be a nuisance, mostly cross or cross-on, and it’s going to trash whatever small swell is trying to get in. The water temp is about normal for the season, nothing to write home about.
We’ve got a long wait, but the first real ray of hope is Thursday morning, the 13th of August. San Mateo (a point break) is looking prime. The wind is glassy – dead calm, just 3 mph from the west – and the swell is a clean 2 ft from the SW with a period of 20 seconds. That’s a very long period groundswell, which is exactly what you want at a point. It’ll have proper shape and punch, with long gaps between sets making the paddle out a cinch. The combined energy is 279, which is moderate, but the glassy conditions will make it feel like a dream. This is the pick of the forecast. Keep in mind, it’s advanced-only and inconsistent, so crowds won’t be an issue, but you might see a few sneaky locals.
The next big one is the morning of Monday the 17th of August. Another glassy morning, with the wind from the WSW at 3 mph. The swell is a bit bigger at 4 ft, still from the SW, with a period of 14 seconds. Combined energy is 546, moderate but solid. The forecast says “expect very good surf conditions.” That’s a must-surf for anyone who can handle it. Again, it’s a point, so that longer period will make for some beautiful lines.
Before that, Saturday morning the 15th of August has some size, but the wind is a gentle cross-shore, not glassy. The swell is 5 ft from the SW with a 15-second period, and the combined energy is 1103, which is strong. That’s a lot of power, and for a point it could be a good session for the experienced crew, but the wind will put a bit of a texture on it.
The rest of the two weeks is pretty much a dud. The wind is too strong or in the wrong direction to get clean waves. From the 19th onward, it’s all cross-shore and cross-on junk, with the swell fading. There’s a marginal window on the 21st and 22nd, but the wind is still not cooperating, so I wouldn’t get your hopes up.
Best bet? Get out there on the 13th and the 17th. Those are your sessions.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sat morning, min 24°C on Sat night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 27°C on Tue morning, min 23°C on Wed night). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 15 | SW 15 | SW 14 | SW 18 | SW 13 | SW 16 | SW 16 | SW 12 | SW 15 | SW 14 | SW 20 | SW 19 | SW 18 | SW 17 | SW 16 | SW 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 398 | 341 | 212 | 163 | 132 | 136 | 429 | 251 | 375 | 176 | 306 | 353 | 51 | 134 | 147 | 203 | 303 | 808 | 974 | 1039 | 897 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross-off | cross | cross | cross | cross-on | cross | glassy | cross-on | cross | cross | cross-on | cross |
High Tide | 10:55AM2.16m | 11:58PM2.05m | 12:13PM2.19m | 1:12AM2.18m | 1:24PM2.28m | 2:15AM2.37m | 2:26PM2.41m | 3:09AM2.56m | 3:20PM2.53m | 3:57AM2.70m | 4:09PM2.61m | 4:41AM2.79m | 4:55PM2.63m | ||||||||
Low Tide | 5:31PM0.54m | 6:01AM0.78m | 6:45PM0.44m | 7:17AM0.68m | 7:50PM0.30m | 8:21AM0.53m | 8:46PM0.16m | 9:17AM0.38m | 9:36PM0.05m | 10:06AM0.26m | 10:22PM0.01m | 10:52AM0.19m | 11:05PM0.03m | ||||||||
 |  |  | | | | | | | | | | | |  | | | | | | | |
 | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:24 | — | — | 6:24 | — | — |
 | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — | — | 6:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 24 | 26 | 26 | 24 | 25 | 26 | 24 | 27 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 24 | 26 | 26 | 24 |
Feels °C | 27 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 24 | 28 | 25 | 23 | 28 | 26 | 25 | 27 | 27 | 26 | 28 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | SW 14 | SW 14 | SW 13 | SW 13 | SW 13 | SW 15 | SW 15 | SW 14 | SW 14 | SW 13 | SW 16 | SW 16 | SW 15 | SW 15 | SW 6 | SW 6 | SW 16 | SW 18 | SW 17 | SW 16 | SW 16 |
| kJ | 398 | 341 | 212 | 163 | 132 | 136 | 429 | 251 | 231 | 176 | 306 | 353 | 217 | 134 | 43 | 27 | 257 | 808 | 974 | 1039 | 897 |
Swell 2 Height (m) Direction Period (s) | NW 9 | NW 9 | SW 18 | SW 16 | SW 16 | SW 12 | SW 20 | SW 19 | SW 18 | SSW 16 | SW 13 | SW 12 | SW 12 | SW 12 | SW 14 | SW 16 | SW 19 | SSW 12 | SW 6 | NW 13 | NW 13 |
| kJ | 3 | 3 | 49 | 42 | 93 | 65 | 239 | 133 | 375 | 181 | 109 | 23 | 51 | 52 | 147 | 203 | 303 | 13 | 15 | 7 | 7 |
Swell 3 Height (m) Direction Period (s) | — | SW 24 | SW 22 | SW 22 | SW 22 | SW 21 | N 6 | N 5 | — | N 6 | N 6 | NW 8 | N 7 | SSW 13 | SW 18 | SW 20 | NW 12 | — | — | — | — |
| kJ | — | 22 | 19 | 20 | 19 | 70 | 2 | 1 | — | 3 | 3 | 2 | 1 | 32 | 50 | 192 | 6 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SSW 6 | SSW 6 | SSW 5 | SW 5 | SSW 5 | SSW 6 | SSW 6 | SSW 6 | SSW 7 | SSW 6 | — | — | SW 6 | SSW 6 | — | SW 6 | SW 4 |
| kJ | 55 | 62 | 37 | 33 | 58 | 40 | 18 | 29 | 46 | 60 | 94 | 65 | 91 | 74 | — | — | 27 | 22 | — | 24 | 26 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 310 | 912 | 7 | 310 | 805 | 7 | 7 | 954 | 310 | 11 | 912 | 111 | 7 | 1052 | 141 | 0 | 1054 | 307 | 141 | 141 | 7 |
Best forecast wave conditions in Manabi | |||||||||||||||||||||
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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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