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Praia das Dunas Surf Forecast
/ Rio de Janeiro (47 surf breaks) /
Surf Forecasts:
Praia das Dunas surfForecast / Rio de Janeiro / Brazil
12 Day Weather and Surf, issued 8 am Saturday 18 Oct 2025 -03
Best Forecast Surf Conditions for Praia das Dunas this week:
The surf forecast for Praia das Dunas over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Oct 20) at 9PM. The primary swell is predicted to be 1.6m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Praia das Dunas in the next 12 days are 3.0m 10s and forecast to arrive on Monday (Oct 20) at 12AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 8s period and expected on Sunday (Oct 19) at 3PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Mon 20th Oct) | 5ft (1.6m) 11s |
| Best Surf | 9PM (Mon 20th Oct) | 5ft (1.6m) 11s |
| Most Powerful | 12AM (Mon 20th Oct) | 10ft (3.0m) 10s |
Table - best surf conditions forecast for Praia das Dunas over the next 12 days.
Short Range Forecast Heavy rain (total 34mm), heaviest during Sat afternoon. Warm (max 23°C on Sat morning, min 18°C on Mon night). Winds increasing (light winds from the SE on Sat morning, fresh winds from the WSW by Sat night). | Days 3-6 Weather Summary Light rain (total 3mm), mostly falling on Tue night. Warm (max 21°C on Thu afternoon, min 18°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
| AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Rating (10 max) | |||||||||||||||||||||
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
| Wave Height (m) & direction (?) | |||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 10 | 10 | 9 | 11 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 10 | 10 | 10 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 232 | 257 | 149 | 101 | 60 | 1624 | 1035 | 863 | 408 | 504 | 371 | 246 | 460 | 343 | 197 | 459 | 428 | 217 | 340 | 340 | 396 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | on | cross- off | off | cross- off | cross- off | cross- off | cross- off | cross | cross | cross | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | on |
High Tide / height (m) | 1:11PM 0.99 | 12:59AM 1.04 | 1:30PM 1.01 | 1:30AM 1.09 | 1:50PM 1.02 | 2:00AM 1.11 | 2:10PM 1.01 | 2:31AM 1.10 | 2:30PM 0.99 | 3:01AM 1.08 | 2:50PM 0.96 | 3:32AM 1.03 | 3:13PM 0.93 | ||||||||
Low Tide / height (m) | 7:00PM 0.27 | 7:19AM 0.10 | 7:28PM 0.20 | 7:50AM 0.11 | 7:56PM 0.15 | 8:19AM 0.14 | 8:23PM 0.10 | 8:49AM 0.19 | 8:51PM 0.08 | 9:18AM 0.25 | 9:20PM 0.08 | 9:49AM 0.31 | 9:52PM 0.11 | ||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
| Sunrise | 5:13 | - | - | 5:11 | - | - | 5:11 | - | - | 5:11 | - | - | 5:09 | - | - | 5:09 | - | - | 5:07 | - | - |
| Sunset | - | 5:52 | - | - | 5:52 | - | - | 5:53 | - | - | 5:53 | - | - | 5:54 | - | - | 5:54 | - | - | 5:55 | - |
 | |  |  | |  | |  |  | |  | | | |  | | | | | | | |
Rain (mm) | 1 | 7 | 13 | 4 | 2 | 3 | 1 | - | 3 | - | - | 3 | - | - | - | - | - | - | - | - | - |
| Temp. °C | 23 | 22 | 22 | 21 | 20 | 20 | 19 | 20 | 19 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 21 | 20 | 21 | 21 | 21 |
| Feels °C (?) | 24 | 22 | 21 | 18 | 16 | 16 | 15 | 16 | 16 | 15 | 16 | 18 | 16 | 16 | 17 | 18 | 17 | 16 | 18 | 17 | 19 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Rio de Janeiro
Offshore wind has become very light (light winds from the NNE at Jacarepagua Airport 13 km from Praia da Macumba). Surf should be turning clean at Praia da Macumba. 0.5m 4s local chop from the WSW with a 0.4m 8s swell from the S. 2 swells combining to make bigger set waves.
1 h 42 min ago
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 Praia das Dunas 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 Praia das Dunas Surf forecast
The above surf forecast table for Praia das Dunas provides essential information for determining whether the surfing conditions will be good over the next 12 days. A general guide to surfing at Praia das Dunas can be found by selecting the local surf guide option on the grey menu. Our Praia das Dunas 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 (Praia das Dunas) 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 Praia das Dunas 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.
Praia das Dunas is 5 km (3 miles) from Cabo Frio. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Cabo Frio. Cabo Frio has rooms for a wide range of budgets as well as car hire and transport links.
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