Surf Forecasts:
Islas Marietas surf forecast from 17 Aug 2026:
- Best quality surf: Sunday 23 Aug, 12PM (local time) - 2ft (0.6m), 18s period, SW swell with glassy winds.
- Most powerful swell: Monday 24 Aug, 6PM (local time) - 3ft (0.9m), 17s period, SW swell with 405 kJ wave energy.
- Next surfable swell (1★+): Sunday 23 Aug, 12PM (local time) - 2ft (0.6m), 18s 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 Sunday (Aug 23) at 12PM. The primary swell is predicted to be 0.6m and 18s period. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Islas Marietas in the next 16 days are 0.9m 17s and forecast to arrive on Monday (Aug 24) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.2m 15s period and expected on Tuesday (Aug 18) at 3PM.
| Wave Type | Time (CST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Sun 23rd Aug) | 2ft (0.6m) 18s |
| Best Surf | 12PM (Sun 23rd Aug) | 2ft (0.6m) 18s |
| Most Powerful | 6PM (Mon 24th Aug) | 3ft (0.9m) 17s |
Table - best surf conditions forecast for Islas Marietas over the next 16 days.
Short Range ForecastModerate rain (total 10mm), heaviest on Mon night. Warm (max 30°C on Mon morning, min 27°C on Mon night). Winds decreasing (fresh winds from the SSW on Mon afternoon, calm by Tue morning). | Days 4-6 Weather SummaryHeavy rain (total 24mm), heaviest during Fri night. Warm (max 30°C on Thu afternoon, min 26°C on Fri night). Wind will be generally light. | ||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | |||||||||||||||
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) | WNW 6 | WNW 6 | SW 13 | WNW 6 | WNW 6 | WNW 8 | WNW 7 | NW 12 | NW 7 | NW 7 | NW 12 | SSW 13 | SSW 13 | NW 9 | SW 18 | SSW 16 | SSW 13 | SW 16 | SW 18 | SW 18 | SW 18 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 7 | 261 | 4 | 4 | 12 | 5 | 37 | 12 | 7 | 22 | 0 | 0 | 12 | 111 | 0 | 0 | 122 | 255 | 255 | 0 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | on | cross-on | cross | off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | off | cross-on | on | cross | cross-on | glassy |
High Tide | 11:47AM1.31m | 00:10AM0.96m | 12:01PM1.26m | 00:54AM0.81m | 12:09PM1.21m | 12:00PM1.15m | 10:50AM1.10m | 3:04PM1.07m | 9:40AM1.09m | 5:51PM1.13m | 9:08AM1.11m | 6:46PM1.23m | |||||||||
Low Tide | 6:22PM0.57m | 5:13AM0.67m | 7:11PM0.62m | 4:42AM0.74m | 10:43PM0.66m | 00:53AM0.54m | 2:42PM1.07m | 1:23AM0.42m | 1:36PM1.00m | 1:47AM0.32m | 1:42PM0.92m | 2:09AM0.24m | |||||||||
 |  |  | |  | | | |  | | | | | | |  | |  | | | | |
 | 6:41 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — | 6:43 | — | — |
 | — | 7:30 | — | — | 7:29 | — | — | 7:29 | — | — | 7:28 | — | — | 7:27 | — | — | 7:25 | — | — | 7:25 | — |
mm | 1 | — | 4 | 2 | — | 3 | — | — | — | — | — | 2 | — | 1 | 16 | 2 | — | 3 | — | — | — |
Temp °C | 30 | 29 | 29 | 29 | 29 | 29 | 29 | 30 | 30 | 29 | 30 | 30 | 29 | 30 | 29 | 27 | 30 | 30 | 29 | 29 | 29 |
Feels °C | 31 | 28 | 32 | 34 | 33 | 34 | 33 | 33 | 34 | 34 | 34 | 34 | 33 | 32 | 35 | 29 | 33 | 35 | 34 | 32 | 33 |
Swell 1 Height (m) Direction Period (s) | SSW 14 | SSW 15 | SW 13 | SW 14 | SSW 15 | SSW 16 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SW 13 | SSW 14 | SSW 13 | SSW 13 | SSW 14 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 545 | 608 | 261 | 476 | 576 | 666 | 455 | 437 | 357 | 294 | 229 | 222 | 149 | 180 | 261 | 158 | 154 | 384 | 293 | 257 | 249 |
Swell 2 Height (m) Direction Period (s) | WNW 6 | WNW 6 | SSW 17 | S 9 | S 9 | S 9 | S 9 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | S 10 | SSW 16 | SSE 10 | S 10 | SW 18 | SW 18 | SW 18 |
| kJ | 8 | 7 | 255 | 13 | 14 | 25 | 14 | 29 | 30 | 30 | 30 | 31 | 50 | 48 | 68 | 226 | 75 | 73 | 255 | 255 | 327 |
Swell 3 Height (m) Direction Period (s) | S 8 | S 8 | S 8 | WNW 6 | WNW 6 | WNW 8 | WNW 7 | W 8 | NW 7 | NW 7 | SSW 18 | SW 19 | SSW 16 | SSW 17 | SW 18 | S 10 | SSW 16 | SW 16 | S 10 | S 11 | S 10 |
| kJ | 5 | 12 | 12 | 4 | 4 | 12 | 5 | 1 | 12 | 7 | 31 | 94 | 105 | 28 | 111 | 68 | 85 | 122 | 55 | 58 | 56 |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | — | — | — | — | — | NW 12 | — | — | NW 12 | — | — | NW 9 | — | ENE 4 | WNW 5 | — | — | — | — |
| kJ | — | 4 | — | — | — | — | — | 37 | — | — | 22 | — | — | 12 | — | 23 | 2 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 15 | 277 | 18 | 19 | 15 | 11 | 11 | 14 | 11 | 11 | 499 | 11 | 11 | 18 | 19 | 11 | 29 | 11 | 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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