Surf Forecasts:
Praia das Dunas surf forecast from 18 Oct 2026:
- Best quality surf: Monday 19 Oct, 12AM (local time) - 2.5ft (0.8m), 9s period, ESE swell with cross-offshore winds.
- Most powerful swell: Tuesday 20 Oct, 9PM (local time) - 5ft (1.5m), 11s period, S swell with 505 kJ wave energy.
- Next surfable swell (1★+): Monday 19 Oct, 12AM (local time) - 2.5ft (0.8m), 9s period with ESE swell.
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 Monday (Oct 19) at 12AM. The primary swell is predicted to be 0.8m and 9s 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 16 days are 1.5m 11s and forecast to arrive on Tuesday (Oct 20) at 9PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.2m 12s period and expected on Monday (Oct 19) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 19th Oct) | 2.5ft (0.8m) 9s |
| Best Surf | 12AM (Mon 19th Oct) | 2.5ft (0.8m) 9s |
| Most Powerful | 9PM (Tue 20th Oct) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Praia das Dunas over the next 16 days.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun night. Warm (max 23°C on Sun morning, min 19°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 18mm), heaviest on Wed night. Warm (max 24°C on Fri afternoon, min 20°C on Wed morning). Winds decreasing (fresh winds from the ENE on Thu night, light winds from the NNW by Fri night). | ||||||||||||||||||||
Sunday 18 | Monday 19 | Tuesday 20 | Wednesday 21 | Thursday 22 | Friday 23 | Saturday 24 | |||||||||||||||
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) | SE 10 | SE 9 | ESE 9 | ESE 9 | ESE 9 | SE 11 | ESE 10 | E 9 | S 10 | S 10 | S 11 | S 11 | S 10 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | SSE 10 | SSE 9 | SSE 9 | SSE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 160 | 173 | 103 | 68 | 42 | 29 | 55 | 42 | 467 | 318 | 394 | 434 | 346 | 312 | 297 | 231 | 176 | 140 | 119 | 90 | 62 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-off | cross-off | glassy | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | on | on | cross-on | glassy | cross-off | glassy |
High Tide | 9:53AM0.74m | 6:47PM0.68m | 11:03AM0.81m | 10:15PM0.73m | 11:43AM0.89m | 11:14PM0.83m | 12:15PM0.96m | 11:54PM0.93m | 12:44PM1.02m | 00:30AM1.02m | 1:11PM1.05m | 1:05AM1.09m | 1:36PM1.05m | 1:40AM1.15m | |||||||
Low Tide | 2:44PM0.59m | 3:05AM0.34m | 4:14PM0.53m | 4:22AM0.28m | 5:10PM0.45m | 5:18AM0.20m | 5:51PM0.37m | 6:04AM0.13m | 6:28PM0.28m | 6:45AM0.07m | 7:03PM0.21m | 7:25AM0.04m | 7:38PM0.14m | ||||||||
 | |  |  | |  | | |  |  | | | | | |  | |  |  | | | |
 | 5:13 | — | — | 5:11 | — | — | 5:11 | — | — | 5:11 | — | — | 5:09 | — | — | 5:09 | — | — | 5:07 | — | — |
 | — | 5:52 | — | — | 5:52 | — | — | 5:53 | — | — | 5:53 | — | — | 5:54 | — | — | 5:54 | — | — | 5:55 | — |
mm | — | — | 9 | 3 | 1 | 5 | 2 | 1 | — | — | 1 | 5 | 4 | 2 | 4 | 2 | — | — | — | — | 1 |
Temp °C | 23 | 23 | 21 | 20 | 21 | 20 | 19 | 20 | 20 | 20 | 21 | 21 | 21 | 21 | 22 | 23 | 24 | 23 | 26 | 26 | 24 |
Feels °C | 24 | 24 | 22 | 18 | 20 | 20 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 18 | 20 | 23 | 24 | 23 | 28 | 28 | 28 |
Swell 1 Height (m) Direction Period (s) | SSW 8 | SE 9 | SSW 12 | SSW 12 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 10 | S 10 | S 11 | S 11 | S 10 | SSE 10 | SSE 11 | SSE 10 | SSE 10 | E 6 | SSE 9 | E 6 | SSE 8 |
| kJ | 103 | 173 | 1186 | 1224 | 869 | 689 | 551 | 487 | 467 | 318 | 394 | 434 | 346 | 312 | 297 | 231 | 176 | 81 | 119 | 41 | 62 |
Swell 2 Height (m) Direction Period (s) | SE 10 | SSW 8 | ESE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 10 | E 9 | ESE 9 | E 8 | ESE 8 | S 17 | ESE 8 | S 16 | S 15 | S 14 | S 18 | SSE 10 | E 7 | SSE 9 | E 7 |
| kJ | 160 | 114 | 103 | 68 | 42 | 27 | 55 | 42 | 26 | 21 | 13 | 6 | 13 | 5 | 4 | 4 | 6 | 135 | 56 | 90 | 34 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | SSW 10 | SSE 12 | SSE 11 | SSE 11 | SE 11 | ENE 7 | NE 7 | S 20 | S 19 | S 18 | — | S 16 | SE 9 | S 19 | S 18 | S 14 | S 16 | S 16 | S 14 | S 14 |
| kJ | 57 | 68 | 27 | 12 | 22 | 29 | 5 | 11 | 7 | 7 | 6 | — | 5 | 3 | 7 | 6 | 4 | 5 | 5 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | ENE 6 | ENE 6 | E 4 | E 5 | E 5 | E 5 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 4 | 16 | 10 | 52 | 53 | 74 | 121 | 87 | 77 | 140 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 5 | 5 | 0 | 24 | 24 | 5 | 24 | 24 | 5 | 5 | 5 | 68 | 58 | 68 | 58 | 58 | 5 | 5 | 0 | 24 | 0 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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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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