Surf Forecasts:
Arpoador surf forecast from 9 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 12PM (local time) - 6.5ft (2.0m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 3PM (local time) - 7ft (2.2m), 13s period, S swell with 1,667 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 12PM (local time) - 6.5ft (2.0m), 13s period with S swell.
Best Forecast Surf Conditions for Arpoador this week:
The surf forecast for Arpoador over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 11) at 12PM. The primary swell is predicted to be 2.0m and 13s period with a secondary swell of 0.1m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Arpoador in the next 16 days are 2.2m 13s and forecast to arrive on Tuesday (Aug 11) at 3PM. 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 5s period and expected on Wednesday (Aug 12) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 11th Aug) | 6.5ft (2.0m) 13s |
| Best Surf | 12PM (Tue 11th Aug) | 6.5ft (2.0m) 13s |
| Most Powerful | 3PM (Tue 11th Aug) | 7ft (2.2m) 13s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up for Arpoador.
We’ve got a bit of a slow start, but things are set to build into a solid run of surf. The first proper call isn’t until Tuesday afternoon, so there’s a bit of a wait. After that, there’s a good stretch of clean waves through the rest of the week, then it fades out again into the following week.
The water is sitting at 74°F with an anomaly 3°F warmer than usual, so it’s a touch warmer than normal for this time of year.
Tuesday the 11th afternoon is the standout. Swell is coming in at 7ft from the S, with a 13-second period, and the combined energy is strong at 1671 (moderate wave energy). Winds are gentle cross-off, keeping the faces clean. This is excellent for experienced surfers. That south swell will be wrapping in nicely. Crowds are likely here, so get your timing right.
Wednesday the 12th morning is also worth a paddle. The swell drops slightly to 6ft from the S, still a 12-second period, and combined energy at 837 (moderate). Winds are light cross-off and it’s clean. Good conditions for the intermediate crowd.
Thursday the 13th morning brings in a 5ft S swell, 12-second period, with clean conditions and light offshore wind from the NNE. Combined energy at 792 (moderate). Very surfable.
Friday the 14th morning is looking clean again, with a 5ft S swell, 14-second period, and light offshore winds. Combined energy at 955 (moderate). The longer period will give the waves a bit more shape, but at a beach setup like Arpoador it can break a little straight. Still, a good session.
Saturday the 15th morning is glassy, with a 5ft S swell, 13-second period, and combined energy at 681 (moderate). Perfect conditions for a long, relaxed session.
After Saturday, the swell tails off quickly. From Monday the 17th into the following week, the energy drops to weak levels, with many days showing poor conditions. There’s a 5-day gap with no real recommendations from the 18th through the 22nd. A small pulse of S swell returns on Monday the 24th morning with 4ft at 13 seconds and combined energy at 484 (weak), but conditions are marginal, so don’t get your hopes up too high.
Overall, the window from Tuesday the 11th afternoon through Saturday the 15th morning is your best bet, with Tuesday afternoon being the clear winner.
Rusty.
Short Range ForecastModerate rain (total 12mm), heaviest 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 13 | S 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 16 | S 14 | S 14 | S 13 | S 14 | S 13 | S 12 | S 12 |
Wave Graph  | ||||||||||||||||||||
 kJ | 683 | 448 | 833 | 1210 | 1487 | 1110 | 1667 | 1163 | 833 | 855 | 870 | 784 | 1225 | 1208 | 932 | 796 | 893 | 673 | 513 | 339 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross | cross-off | off | cross | cross | off | on | cross-on | glassy | cross | cross-on |
High Tide | 00:16AM0.85m | 2:45PM1.12m | 1:03AM0.95m | 3:05PM1.18m | 1:56AM1.07m | 3:23PM1.21m | 2:41AM1.18m | 3:41PM1.20m | 3:15AM1.26m | 4:01PM1.18m | 3:47AM1.28m | 4:22PM1.13m | ||||||||
Low Tide | 7:51PM0.40m | 7:40AM0.00m | 8:36PM0.37m | 8:31AM-0.09m | 9:09PM0.34m | 9:10AM-0.14m | 9:37PM0.33m | 9:44AM-0.13m | 10:02PM0.34m | 10:15AM-0.05m | 10:26PM0.35m | 10:45AM0.06m | 10:47PM0.37m | |||||||
 |  | |  |  | | |  |  | |  |  | | | | |  | | | | |
 | — | — | 6:20 | — | — | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 5:34 | — | — | 5:34 | — | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:36 | — |
mm | — | 2 | — | 1 | 7 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 23 | 21 | 20 | 20 | 19 | 18 | 19 | 18 | 20 | 21 | 19 | 26 | 27 | 23 | 24 | 23 | 22 | 26 | 23 | 22 |
Feels °C | 24 | 22 | 21 | 20 | 17 | 17 | 18 | 17 | 19 | 20 | 18 | 27 | 27 | 26 | 25 | 24 | 25 | 28 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | S 13 | S 13 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 16 | S 14 | S 14 | S 13 | S 14 | S 13 | S 12 | S 12 |
| kJ | 683 | 448 | 833 | 1210 | 1487 | 1110 | 1667 | 1163 | 833 | 855 | 870 | 784 | 1225 | 1208 | 932 | 796 | 893 | 673 | 513 | 339 |
Swell 2 Height (m) Direction Period (s) | SE 8 | S 5 | ESE 8 | ESE 8 | ESE 7 | E 7 | E 7 | — | — | — | SSE 12 | ESE 5 | ESE 6 | E 6 | E 7 | ESE 7 | E 8 | ESE 9 | ESE 10 | ESE 4 |
| kJ | 15 | 24 | 6 | 6 | 5 | 4 | 4 | — | — | — | 240 | 8 | 10 | 19 | 23 | 15 | 6 | 8 | 9 | 7 |
Swell 3 Height (m) Direction Period (s) | — | ESE 8 | E 8 | SE 12 | — | — | — | — | — | — | — | — | — | — | — | — | E 8 | — | — | ESE 13 |
| kJ | — | 6 | 5 | 6 | — | — | — | — | — | — | — | — | — | — | — | — | 33 | — | — | 16 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | E 7 | E 4 | E 5 | E 5 | E 6 | E 6 | — | — | — | — | E 11 | E 4 |
| kJ | — | — | — | — | — | — | — | — | 4 | 9 | 46 | 27 | 11 | 63 | — | — | — | — | 57 | 13 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 193 | 51 | 51 | 138 | 156 | 12 | 0 | 0 | 0 | 117 | 0 | 0 | 12 | 3 | 0 | 51 | 32 | 0 | 36 | 11 |
Best forecast wave conditions in Rio de Janeiro | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Arpoador Surf forecast
The above surf forecast table for Arpoador provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Arpoador can be found by selecting the local surf guide option on the grey menu. Our Arpoador 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 (Arpoador) 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 Arpoador 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.
Arpoador is 14 km (9 miles) from the very large city of Niteroi. If you plan a holiday in Rio de Janeiro, look for hotels and other accommodation in Niteroi. Niteroi has rooms for a wide range of budgets as well as cheap car hire and transport links.
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