
Surf Forecasts:
Itacoatiara surf forecast from 9 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 12AM (local time) - 7.5ft (2.3m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 3PM (local time) - 8ft (2.5m), 13s period, S swell with 2,278 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 12AM (local time) - 7.5ft (2.3m), 13s period with S swell.
Best Forecast Surf Conditions for Itacoatiara this week:
The surf forecast for Itacoatiara over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 12AM. The primary swell is predicted to be 2.3m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Itacoatiara in the next 16 days are 2.5m 13s and forecast to arrive on Tuesday (Aug 11) at 3PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Thursday (Aug 13) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 12th Aug) | 7.5ft (2.3m) 13s |
| Best Surf | 12AM (Wed 12th Aug) | 7.5ft (2.3m) 13s |
| Most Powerful | 3PM (Tue 11th Aug) | 8ft (2.5m) 13s |
Table - best surf conditions forecast for Itacoatiara over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s have a look at what’s coming our way.
Right off the bat, we’ve got a pulse of solid, consistent S swell pushing into Itacoatiara starting Sunday the 9th of August, and it hangs around for a good solid run through to the following weekend. The water is sitting at 74°, which is a touch warmer than normal for this time of year, so you might get away without a full steamer.
Sunday the 9th kicks things off, but it’s a bit average. We’ve got 6ft of S swell at 13 seconds, but that cross-onshore wind from the SSW at 9 mph is putting a chop on it. Combined wave energy is sitting at 1039 (moderate), but the quality isn’t there yet. Monday the 10th sees the swell bump up to 6ft and 8ft through the day, but the wind stays messy. By Tuesday the 11th, the swell hits 8ft with a 13-second period from the S – that’s getting into expert territory – and combined energy jumps to 2278 (strong). Still, the wind is cross or cross-shore, so it’s not perfect.
Now, Wednesday morning the 12th of August is where we start to see some real potential. The swell drops back to a more manageable 7ft from the S, 12-second period, but the wind turns cross-offshore from the ENE at only 6 mph, and conditions are described as clean. Combined energy is 1269 (moderate). This is a good window for experienced surfers. Thursday morning the 13th is also clean with a light NNE breeze, 6ft S swell at 12 seconds, and combined energy of 961 (moderate). But the standout – the one I’d circle on the calendar – is Friday morning the 14th of August. Glassy conditions, a light NNE breeze, 6ft of S swell at 14 seconds (that’s proper groundswell), and combined energy of 1175 (moderate). The 14-second period means longer, more powerful waves with better shape, but at a beach-reef-point setup like Itacoatiara, it’ll be holding up nicely. This is the best session on offer, and it’s for experienced surfers.
Saturday morning the 15th also looks clean and glassy, with 5ft S swell at 13 seconds, but the swell is already starting to ease off.
After that, things drop away fast. From Sunday the 16th through to Wednesday the 19th, the swell fades to 4ft and then down to 1ft, with a mix of onshore and cross-onshore winds and combined energy dropping to 56 (weak). It’s a dead period. Thursday the 20th and Friday the 21st have a tiny bump of 2ft to 3ft, but the quality is poor. There’s a real gap of poor conditions from the 16th right through to the 23rd.
Then, on Monday the 24th of August, we get a fresh pulse of S swell at 5ft, 13 seconds, with clean cross-offshore wind from the ENE at 9 mph and combined energy of 749 (moderate). That’s promising, and it builds to 5ft on Monday afternoon with energy hitting 1137 (moderate). It’s still a week and a half away, so treat it as a promising but less certain call.
Crowds at Itacoatiara are often an issue, so keep that in mind, especially on the cleaner mornings.
All in all, your best bet is Friday morning the 14th – glassy, clean, solid S groundswell. Wednesday the 12th and Thursday the 13th mornings are also good. Don’t hold your breath for the second week until that Monday the 24th shows up.
Rusty.
Short Range ForecastLight rain (total 9mm), mostly falling on Mon night. Warm (max 23°C on Sun afternoon, min 18°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Thu afternoon, min 18°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Sun 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | ||||||||||||||
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) | S 13 | S 12 | S 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 13 | S 14 | S 14 | S 13 | S 14 | S 13 | S 12 | S 12 |
Wave Graph | ||||||||||||||||||||
1034 | 604 | 963 | 1729 | 1942 | 1632 | 2278 | 1650 | 1269 | 1266 | 1179 | 961 | 1218 | 1630 | 1175 | 1002 | 1083 | 852 | 660 | 480 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross-off | cross-off | cross | cross-off | cross-off | cross-on | glassy | glassy | on | cross | glassy | cross-on | cross-on |
High Tide | 10:07PM0.95m | 1:17PM0.94m | 10:45PM0.97m | 2:27PM0.89m | 11:28PM0.98m | 3:30PM0.85m | 00:17AM0.97m | 4:25PM0.83m | 1:16AM0.95m | 5:12PM0.82m | 2:33AM0.93m | 5:52PM0.82m | ||||||||
Low Tide | 5:30PM0.22m | 5:48AM-0.15m | 6:15PM0.28m | 6:38AM-0.12m | 7:01PM0.33m | 7:30AM-0.08m | 7:49PM0.36m | 8:23AM-0.03m | 8:39PM0.35m | 9:17AM0.01m | 9:32PM0.31m | 10:12AM0.06m | 10:27PM0.25m | |||||||
— | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | |
5:34 | — | — | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | |
mm | — | 1 | — | 1 | 5 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 21 | 20 | 19 | 18 | 19 | 18 | 21 | 21 | 19 | 26 | 27 | 23 | 24 | 24 | 22 | 26 | 24 | 22 |
Feels °C | 24 | 21 | 22 | 20 | 17 | 17 | 18 | 17 | 21 | 19 | 19 | 27 | 27 | 25 | 25 | 25 | 25 | 28 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 13 | S 14 | S 14 | S 13 | S 14 | S 13 | S 12 | S 12 |
1034 | 604 | 963 | 1729 | 1942 | 1632 | 2278 | 1650 | 1269 | 1266 | 1179 | 961 | 1218 | 1630 | 1175 | 1002 | 1083 | 852 | 660 | 480 | |
Swell 2 Height (m) Direction Period (s) | E 8 | S 5 | S 14 | E 8 | E 7 | E 7 | E 7 | — | — | E 7 | E 8 | ESE 5 | S 16 | E 6 | E 7 | E 7 | E 9 | E 9 | ESE 9 | ESE 13 |
19 | 30 | 311 | 5 | 4 | 4 | 4 | — | — | 1 | 1 | 7 | 482 | 29 | 24 | 16 | 13 | 15 | 17 | 32 | |
Swell 3 Height (m) Direction Period (s) | — | E 8 | E 8 | SE 12 | — | — | — | — | — | — | — | E 7 | — | — | — | — | E 8 | — | — | ESE 12 |
— | 5 | 5 | 6 | — | — | — | — | — | — | — | 1 | — | — | — | — | 47 | — | — | 26 | |
Wind waves Height (m) Direction Period (s) | SW 3 | S 5 | — | — | ESE 5 | — | — | — | E 7 | E 3 | E 4 | E 5 | E 6 | E 6 | — | — | — | — | E 11 | E 4 |
5 | 64 | — | — | 15 | — | — | — | 4 | 8 | 19 | 25 | 11 | 63 | — | — | — | — | 82 | 12 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 206 | 39 | 39 | 125 | 168 | 7 | 7 | 0 | 0 | 105 | 0 | 0 | 7 | 0 | 0 | 39 | 33 | 0 | 24 | 7 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Itacoatiara Surf forecast
The above surf forecast table for Itacoatiara provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Itacoatiara can be found by selecting the local surf guide option on the grey menu. Our Itacoatiara 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 (Itacoatiara) 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 Itacoatiara 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.
Are you planning a holiday in Rio de Janeiro? If you are looking for accommodation near Itacoatiara, camping, hotels and holiday cottages in Rio de Janeiro, consider staying in Niteroi which is 6 km (4 miles) away. Other places in and around Rio de Janeiro where you can find information about places to rent, and car hire include Sao Goncalo which is 16 km (10 miles) away, Rio de Janeiro, Marica and Itaborai.











