Surf Forecasts:
Islas Marietas surf forecast from 16 Sep 2026:
- Best quality surf: Thursday 17 Sep, 12AM (local time) - 4.5ft (1.4m), 15s period, SW swell with offshore winds.
- Most powerful swell: Sunday 20 Sep, 6AM (local time) - 3.5ft (1.1m), 19s period, SW swell with 901 kJ wave energy.
- Next surfable swell (1★+): Wednesday 16 Sep, 6AM (local time) - 1ft (0.3m), 23s period with SW swell.
Best Forecast Surf Conditions for Islas Marietas this week:
The surf forecast for Islas Marietas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Sep 16) at 6AM. The primary swell is predicted to be 0.3m and 23s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Islas Marietas in the next 16 days are 1.1m 19s and forecast to arrive on Sunday (Sep 20) at 6AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 16s period and expected on Wednesday (Sep 16) at 6AM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 16th Sep) | 1ft (0.3m) 23s |
| Best Surf | 12AM (Thu 17th Sep) | 4.5ft (1.4m) 15s |
| Most Powerful | 6AM (Sun 20th Sep) | 3.5ft (1.1m) 19s |
Table - best surf conditions forecast for Islas Marietas over the next 16 days.
Short Range ForecastLight rain (total 2mm), mostly falling on Tue night. Warm (max 30°C on Wed afternoon, min 28°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Sun night. Warm (max 29°C on Fri night, min 27°C on Sat night). Wind will be generally light. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 11 | SW 24 | SW 15 | SW 21 | SW 21 | SW 20 | SW 19 | SW 19 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 17 | SW 17 | SW 16 |
Wave Graph  | |||||||||||||||||||
 kJ | 71 | 58 | 87 | 773 | 224 | 368 | 464 | 450 | 450 | 497 | 522 | 522 | 621 | 482 | 719 | 754 | 754 | 737 | 567 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | cross-off | cross | on | on | cross-on | on | cross-on | cross | cross-on | cross | cross | cross-on |
High Tide | 11:40PM0.96m | 10:50AM1.33m | 00:06AM0.83m | 10:51AM1.26m | 10:37AM1.20m | 10:01AM1.14m | 9:06AM1.12m | 5:43PM1.05m | 8:30AM1.14m | 6:35PM1.17m | |||||||||
Low Tide | 4:22AM0.70m | 6:05PM0.51m | 3:55AM0.74m | 6:54PM0.61m | 00:41AM0.58m | 1:02AM0.47m | 1:56PM0.96m | 1:20AM0.38m | 1:37PM0.86m | 1:38AM0.31m | |||||||||
 |  |  |  |  | |  | | |  | | | | |  | | | | | |
 | — | 6:48 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — | 6:50 | — | — |
 | — | — | 7:04 | — | — | 7:02 | — | — | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — |
mm | 1 | 1 | — | — | — | — | — | — | — | 3 | — | — | — | — | 1 | 7 | — | — | 3 |
Temp °C | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 29 | 29 | 29 | 28 | 29 | 28 | 28 | 29 | 28 |
Feels °C | 33 | 33 | 34 | 32 | 33 | 34 | 34 | 35 | 34 | 34 | 32 | 31 | 32 | 32 | 32 | 33 | 32 | 32 | 31 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 16 | SSW 16 | SW 15 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 18 | SW 18 | SW 18 | SW 18 | SW 17 | SW 17 | SW 17 | SW 17 | SW 17 | SW 16 |
| kJ | 691 | 957 | 749 | 773 | 701 | 621 | 368 | 331 | 357 | 497 | 522 | 522 | 621 | 482 | 719 | 754 | 754 | 737 | 567 |
Swell 2 Height (m) Direction Period (s) | SW 12 | SW 11 | SW 11 | SW 22 | SW 21 | SW 21 | SW 20 | SW 19 | SW 19 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 10 |
| kJ | 71 | 58 | 30 | 229 | 224 | 368 | 464 | 450 | 450 | 261 | 217 | 213 | 167 | 161 | 147 | 100 | 68 | 68 | 97 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 9 | SW 24 | S 8 | S 10 | NW 15 | NW 4 | NW 4 | NW 13 | NW 5 | NW 5 | SW 21 | WNW 7 | SW 20 | NW 8 | NW 7 | WNW 7 | W 4 | WNW 4 |
| kJ | 13 | 13 | 87 | 22 | 16 | 8 | 8 | 6 | 7 | 5 | 7 | 72 | 17 | 388 | 17 | 14 | 16 | 8 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | NW 6 | — | — | NW 4 | — | — | — | — | — | WNW 5 | — | — | — | — | — | — | — |
| kJ | — | — | 9 | — | — | 2 | — | — | — | — | — | 9 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 14 | 0 | 0 | 0 | 0 | 0 | 15 | 19 | 11 | 15 | 19 | 11 | 14 | 19 | 11 | 15 | 11 |
Best forecast wave conditions in Nayarit | |||||||||||||||||||
Best forecast wave conditions in Mexico | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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 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.
Information about the Islas Marietas Surf forecast
The above surf forecast table for Islas Marietas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Islas Marietas can be found by selecting the local surf guide option on the grey menu. Our Islas Marietas 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 (Islas Marietas) 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 Islas Marietas 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.
Islas Marietas is 40 km (25 miles) from Puerto Vallarta. If you plan a holiday in Nayarit, look for hotels and other accommodation in Puerto Vallarta. Puerto Vallarta has rooms for a wide range of budgets as well as car hire and transport links.
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