Islas Marietas Surf Break

Lat Long: 20.68° N 105.61° W

Islas Marietas 48 hour detailed Surf Forecast

Issued: 11 am 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Islas Marietas sea temperature is
31.6° C
2.5° 

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


How big are the waves at Islas Marietas today (18 Jul):

  • Morning surf: Morning surf (18 Jul, local time) - 2.5ft (0.8m), 17s period with SW swell.
  • Afternoon surf: Afternoon surf (18 Jul, local time) - 2ft (0.6m), 19s period with SW swell.
  • Evening surf: Evening surf (18 Jul, local time) - 2ft (0.6m), 16s period with SW swell.

The current surf forecast for Islas Marietas at 4PM is: 0.6m 19s primary swell from a Southwest direction and 0.9m 10s secondary swell from a Southwest direction (forecast issued at 11:00am July 18). The wind direction is predicted to be cross-onshore.

Time (CST) & DateWave HeightWave Period
Morning (18 Jul)2.5ft (0.8m)17s
Afternoon (18 Jul)2ft (0.6m)19s
Evening (18 Jul)2ft (0.6m)16s

Table - waves today at Islas Marietas. (Swell directed towards the surf break)


Short Range Forecast

Light rain (total 4mm), mostly falling on Sun morning. Warm (max 30°C on Sun afternoon, min 27°C on Sat morning). Wind will be generally light.

Sat
18
Sunday
19
Monday
20
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
12 AM
3 AM
6 AM
9 AM
12 PM
3 PM
6 PM
9 PM
Rating
(10 max)
1
0
0
2
2
3
3
0
3
2
2
2
2
3
3
3
3
3
2
2
3
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.8
SW
17
0.6
SW
16
0.6
SW
19
0.6
SW
16
0.6
SW
16
0.9
SW
16
1
SW
17
1
SW
10
1
SW
17
1.1
SW
10
0.8
SW
15
0.8
SW
15
0.8
SW
14
1.1
SW
16
1.1
SW
16
1.2
SW
16
1.2
SW
16
1.2
SW
16
1.2
SW
16
1.2
SW
16
1.2
SW
16
Wave Graph
Metric surfscale
Energy kJ
362
165
227
206
203
386
567
196
580
211
262
258
248
694
653
748
748
748
748
729
711
Wind (km/h)
10
SE
15
SSW
10
SE
5
ENE
10
NNE
10
NNE
10
E
5
E
5
ENE
5
WNW
15
WNW
5
N
10
NE
10
NE
10
ENE
5
NE
10
NE
10
N
20
NNW
15
NNW
15
N
Wind State
cross-on
on
cross-on
cross-off
cross-off
off
cross-off
cross
glassy
glassy
cross-off
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
High Tide
12:39PM1.22m
00:02AM1.12m
1:10PM1.21m
00:54AM0.96m
1:43PM1.19m
Low Tide
6:23PM0.71m
6:18AM0.52m
7:27PM0.72m
6:27AM0.66m
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
part cloud
part cloud
cloud
part cloud
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:31
6:31
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:45
7:45
7:45
 mm
1
2
1
Temp °C
27
28
28
29
29
28
27
27
28
29
30
29
28
29
28
28
28
29
29
30
29
Feels °C
30
30
31
33
32
32
31
31
33
33
33
33
31
33
32
32
31
33
31
32
32
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Islas Marietas 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.


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