San Mateo Surf Break

Lat Long: 0.95° S 80.83° W

San Mateo Surf Forecast and Surf Report

Issued: 6 am 06 Sep 2026 (local time)

Forecast update in  hr  min

Today's San Mateo sea temperature is
27.0°C
4.9° 

San Mateo surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


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 TypeTime (-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 Forecast

Light 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 Summary

Mostly 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
Rating
(10 max)
2
0
1
2
0
2
2
0
1
2
0
1
2
0
0
1
0
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
SW
14
1.1
SW
14
1
SW
13
1
SW
13
1
SW
13
0.8
SW
16
0.8
SW
16
0.9
SW
15
1.1
SW
15
0.8
SW
18
1
SW
15
1.2
SW
17
1.2
SW
16
1.2
SW
16
1.1
SW
15
1
SW
14
1
SW
14
0.8
SW
14
0.7
SW
13
0.7
SW
13
0.7
SW
13
Wave Graph
Metric surfscale
Energy kJ
632
492
340
330
330
318
352
390
525
437
410
831
728
719
492
404
398
285
173
171
168
Wind (km/h)
15
SSW
20
WSW
10
WSW
10
WSW
20
WSW
15
SSW
15
SSW
25
SW
15
SSW
15
SSW
25
SW
20
SSW
15
SSW
20
WSW
15
SW
10
SW
20
WSW
10
SSW
10
SSW
20
SW
20
SW
Wind State
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
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
rain showers
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:18
6:18
6:18
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
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
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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