
Surf Forecasts:
Praia das Conchas surf forecast from 4 Aug 2026:
- Best quality surf: Friday 7 Aug, 3PM (local time) - 1.5ft (0.4m), 11s period, SSE swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 3AM (local time) - 7ft (2.2m), 13s period, S swell with 1,642 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 3PM (local time) - 1.5ft (0.4m), 11s period with SSE swell.
Best Forecast Surf Conditions for Praia das Conchas this week:
The surf forecast for Praia das Conchas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 07) at 3PM. The primary swell is predicted to be 0.4m and 11s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Praia das Conchas in the next 16 days are 2.2m 13s and forecast to arrive on Tuesday (Aug 11) at 3AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.0m 8s period and expected on Sunday (Aug 09) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 7th Aug) | 1.5ft (0.4m) 11s |
| Best Surf | 3PM (Fri 7th Aug) | 1.5ft (0.4m) 11s |
| Most Powerful | 3AM (Tue 11th Aug) | 7ft (2.2m) 13s |
Table - best surf conditions forecast for Praia das Conchas over the next 16 days.
The Lowdown
Alright, let’s get into it. This is a tricky stretch we’re looking at, and I’ll be straight with you—it’s going to take some patience. The first few days are pretty much a write-off. We’ve got a consistent cross-shore breeze messing up the lines, and the swell is tiny. Tuesday afternoon is just lumpy leftovers, nothing to get excited about. The water’s sitting at 73°, which is about normal for this time of year, so no surprises there.
Wednesday and Thursday stay weak. There’s a bit of south in the water, but it’s small and chopped up. The wind keeps switching between cross and cross-off, which isn't helping. You’ll see the wave period is around 10-12 seconds, but the energy is just too low to do anything. Friday morning is still weak, but the afternoon eases off a touch—the wind dies and it cleans up a little. That’s your first real chance to get wet, but it’s only knee-to-waist high. Keep the longboard in the car.
The weekend sees a pulse of energy arrive. Saturday afternoon, that south swell bumps up to 6ft, and the energy jumps, but the wind is cross-onshore and choppy. It’s a mess. Sunday morning is bigger, 7ft, with moderate cross-chop, but the standout is Sunday afternoon. The wind swings around to a light SE, almost glassy, and the swell holds at 6ft with a 13-second period. That’s a real window of clean surf. It’s still a bit onshore, but the light air makes it rideable. This is your best bet early on, but it’s looking like a one-off.
Monday and Tuesday are frustrating. The swell stays between 6ft and 7ft, but the wind is cross-shore again, and the period drops a bit. The energy is still significant, but the quality is poor. It’s the kind of surf that looks better from the car park than it is in the water.
The second week really gets messy. Thursday the 13th has a strong cross-shore wind, and Friday the 14th is just plain onshore junk. The swell is there, but it’s blown out. Saturday the 15th has a bit more size, 6ft, but it’s onshore again. Sunday the 16th is bigger, 7ft, with a strong cross-shore wind—that’s not for the faint-hearted, and it’s going to be raw. The following Monday is just more of the same—big but messy.
Now, here’s the one that stands out. Tuesday the 18th, in the morning. We get a clean west-northwest cross-offshore wind, light and glassy. The swell is 5ft from the south with a solid 13-second period. It’s clean. This is the one. After two weeks of onshore junk, this is the window to get some proper, clean waves at Praia das Conchas. It’s not huge, but it’ll be the best shape we’ve seen all stretch. Mark that one in your calendar. The afternoon on that day gets a bit onshore again, so make the most of the morning.
The rest of the window fades out. The last day or two sees a drop in size and a return of the light cross-shore winds. It’s not terrible, but it’s not worth planning around.
So, to sum it up: the first week is a grind, with one clean window on Sunday afternoon. The second week is bigger but messier, with one standout clean morning on Tuesday the 18th. That’s your pick. Everything else is a battle against the wind.
Rusty out.
Short Range ForecastMostly dry. Warm (max 31°C on Fri morning, min 20°C on Tue night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 34°C on Fri afternoon, min 22°C on Fri night). Winds decreasing (fresh winds from the NE on Sat afternoon, light winds from the SE by Sun afternoon). | |||||||||||||||||||
Tue 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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) | E 8 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | SSE 13 | SSE 12 | SSE 11 | S 10 | SW 6 | SSW 14 | SSW 13 | SSW 14 | SSW 13 | S 12 | SSW 12 | S 11 | S 12 |
Wave Graph | ||||||||||||||||||||
157 | 196 | 280 | 195 | 146 | 71 | 48 | 59 | 48 | 41 | 34 | 45 | 1122 | 1206 | 1509 | 1174 | 705 | 833 | 894 | 955 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross | cross | cross | cross-off | cross-off | cross-off | cross-on | cross-on | cross-on | cross | cross | on | cross-off | cross | cross | cross-on |
High Tide | 6:07PM0.84m | 6:30AM0.89m | 6:53PM0.76m | 8:01AM0.81m | 8:03PM0.68m | 11:09AM0.84m | 10:37PM0.67m | 12:31PM0.94m | 11:57PM0.73m | 1:23PM1.03m | 00:42AM0.82m | 2:04PM1.09m | 1:18AM0.92m | |||||||
Low Tide | 00:54AM0.35m | 1:44PM0.38m | 2:04AM0.37m | 3:17PM0.46m | 3:33AM0.34m | 5:00PM0.47m | 4:59AM0.26m | 6:19PM0.44m | 6:07AM0.15m | 7:11PM0.40m | 7:02AM0.04m | 7:51PM0.37m | ||||||||
— | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — | |
5:27 | — | — | 5:28 | — | — | 5:28 | — | — | 5:29 | — | — | 5:29 | — | — | 5:29 | — | — | 5:30 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 2 |
Temp °C | 23 | 22 | 26 | 25 | 21 | 28 | 26 | 23 | 31 | 34 | 24 | 24 | 25 | 23 | 29 | 26 | 22 | 23 | 22 | 21 |
Feels °C | 20 | 19 | 23 | 21 | 17 | 25 | 23 | 20 | 28 | 33 | 22 | 25 | 24 | 20 | 28 | 28 | 22 | 23 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 10 | S 12 | S 12 | S 11 | S 11 | S 10 | S 10 | SSE 13 | SSE 12 | ENE 7 | ENE 7 | SW 6 | SSW 14 | SSW 13 | SSW 14 | SSW 13 | S 12 | SSW 12 | ENE 8 | S 12 |
44 | 196 | 280 | 195 | 146 | 71 | 48 | 59 | 48 | 121 | 114 | 45 | 1122 | 1206 | 1509 | 1174 | 705 | 833 | 45 | 955 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SE 9 | — | — | — | S 16 | SSE 15 | SSE 9 | SSE 9 | SSE 11 | S 3 | S 10 | SW 5 | SE 15 | ENE 8 | SE 13 | ENE 8 | ENE 8 | S 14 | S 14 |
89 | 31 | — | — | — | 5 | 43 | 17 | 8 | 41 | 6 | 17 | 10 | 8 | 185 | 7 | 127 | 69 | 102 | 388 | |
Swell 3 Height (m) Direction Period (s) | SW 6 | SW 6 | — | — | — | S 16 | S 12 | SSW 11 | SSW 10 | SSW 10 | S 10 | S 18 | SW 5 | SE 15 | — | SE 13 | E 13 | SE 12 | SE 12 | ENE 7 |
2 | 1 | — | — | — | 20 | 3 | 23 | 9 | 9 | 34 | 24 | 10 | 8 | — | 7 | 3 | 6 | 6 | 17 | |
Wind waves Height (m) Direction Period (s) | E 8 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | S 3 | ENE 8 | ENE 8 | ENE 7 | — | ENE 8 | WSW 4 | SSW 7 | S 11 | SE 5 |
157 | 158 | 245 | 270 | 248 | 236 | 233 | 212 | 147 | 282 | 3 | 110 | 99 | 231 | — | 181 | 24 | 145 | 894 | 40 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 74 | 53 | 49 | 116 | 64 | 51 | 64 | 53 | 6 | 0 | 9 | 13 | 13 | 51 | 10 | 13 | 4 | 9 | 280 | 15 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Praia das Conchas Surf forecast
The above surf forecast table for Praia das Conchas 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 Conchas can be found by selecting the local surf guide option on the grey menu. Our Praia das Conchas 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 Conchas) 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 Conchas 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 Conchas is 4 km (2 miles) from the city of 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.











