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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
16 Day Weather and Surf, issued 2 am Saturday 18 Apr 2026 -03Forecast update in hr min s Forecast update imminent
Praia das Dunas surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Praia das Dunas sea temperature is
25.2° C
(Which is slightly cooler than normal)Best Forecast Surf Conditions for Praia das Dunas this week:
The surf forecast for Praia das Dunas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Sunday (Apr 19) at 6AM. The primary swell is predicted to be 0.7m and 9s period with a secondary swell of 0.5m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Praia das Dunas in the next 16 days are 0.8m 11s and forecast to arrive on Monday (Apr 20) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 10s period and expected on Monday (Apr 20) at 12PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sun 19th Apr) | 2.5ft (0.7m) 9s |
| Best Surf | 6AM (Sun 19th Apr) | 2.5ft (0.7m) 9s |
| Most Powerful | 9PM (Mon 20th Apr) | 2.5ft (0.8m) 11s |
Table - best surf conditions forecast for Praia das Dunas over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range Forecast Mostly dry. Warm (max 25°C on Sat morning, min 21°C on Mon night). Mainly fresh winds. | Days 3-6 Weather Summary Mostly dry. Warm (max 24°C on Tue morning, min 21°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) (?) | 9 | 9 | 9 | 9 | 9 | 9 | 8 | 10 | 12 | 10 | 10 | 9 | 9 | 9 | 9 | 8 | 7 | 4 | 8 | 8 | 14 |
Wave (?)Graph  | |||||||||||||||||||||
 kJ (?) | 125 | 101 | 88 | 88 | 58 | 55 | 72 | 42 | 53 | 83 | 80 | 76 | 56 | 47 | 30 | 27 | 40 | 15 | 19 | 23 | 144 |
Wind (km/h) | |||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross- on | cross- on | off | off | off | cross- off | off | cross- off | cross- off | cross- off | cross | glass | cross- off | on | on | cross- on | on | on | cross- on | on |
High Tide / height (m) | 3:16PM 1.16 | 3:11AM 0.94 | 3:58PM 1.10 | 3:35AM 0.90 | 4:45PM 1.01 | 4:02AM 0.85 | 5:42PM 0.89 | 4:33AM 0.81 | 7:36PM 0.80 | 5:16AM 0.76 | 10:41PM 0.81 | 6:36AM 0.71 | 11:35PM 0.86 | ||||||||
Low Tide / height (m) | 9:11AM 0.07 | 9:51PM 0.20 | 9:48AM 0.06 | 10:34PM 0.32 | 10:28AM 0.08 | 11:21PM 0.45 | 11:17AM 0.13 | 12:17AM 0.57 | 12:22PM 0.20 | 1:36AM 0.64 | 1:49PM 0.25 | 3:15AM 0.64 | 3:23PM 0.26 | ||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
| Sunrise | 6:01 | - | - | 6:01 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - | 6:03 | - | - |
| Sunset | - | 5:31 | - | - | 5:30 | - | - | 5:30 | - | - | 5:30 | - | - | 5:29 | - | - | 5:28 | - | - | 5:27 | - |
 | |  | | | | | | | | | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 25 | 25 | 24 | 25 | 25 | 24 | 24 | 24 | 23 | 24 | 24 | 23 | 23 | 23 | 23 | 24 | 24 | 24 | 25 | 25 | 24 |
| Feels °C (?) | 26 | 26 | 26 | 23 | 24 | 25 | 24 | 23 | 23 | 24 | 24 | 26 | 24 | 23 | 24 | 23 | 23 | 24 | 26 | 26 | 24 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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 16 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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