Surf Forecasts:
Arpoador surf forecast from 11 Aug 2026:
- Best quality surf: Tuesday 11 Aug, 3PM (local time) - 7.5ft (2.3m), 13s period, S swell with cross-offshore winds.
- Most powerful swell: Tuesday 11 Aug, 3PM (local time) - 7.5ft (2.3m), 13s period, S swell with 1,821 kJ wave energy.
- Next surfable swell (1★+): Tuesday 11 Aug, 3PM (local time) - 7.5ft (2.3m), 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 3PM. 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 Arpoador in the next 16 days are 2.3m 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 1.2m 5s period and expected on Wednesday (Aug 12) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Tue 11th Aug) | 7.5ft (2.3m) 13s |
| Best Surf | 3PM (Tue 11th Aug) | 7.5ft (2.3m) 13s |
| Most Powerful | 3PM (Tue 11th Aug) | 7.5ft (2.3m) 13s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright crew, Rusty here again. Let’s talk about Arpoador in feet and miles.
The water is 74°, which is a touch warmer than usual for this time of year – nice, you’ll be fine in a spring suit or just trunks.
The standout is Thursday morning, August 13th. Swell is a clean 6ft from the south, with a 13-second period. That’s proper groundswell, and the combined energy is 934 (moderate). The wind is light offshore from the north, so the faces will be smooth as butter. It’s a beginner-friendly break, so that offshore wind will make it a dream. Expect a few others out there – this spot is often crowded.
Friday morning, August 14th, is another beauty. The swell drops to 5ft from the south, still a long 13-second period, but the wind is glass, zero, nothing. The combined energy is 917 (moderate). It’ll be clean, lined up, and just a gorgeous morning. Again, expect company.
Tuesday afternoon, August 11th, has the biggest swell – 8ft from the south with a 13-second period, and the combined energy is 1821 (strong). The wind is light cross-offshore from the east, so it’s clean, but that size is for experts only. Don’t take your soft top out there.
After the 16th, it drops off a cliff. The swell falls below 3ft, and the wind turns messy. From the 19th to the 26th, there’s a long stretch of poor conditions, with the combined energy dropping to two-digit numbers (weak). It’s a real dead zone.
The run from the 11th to the 16th is your window. After that, find something else to do.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue morning. Warm (max 26°C on Thu morning, min 18°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 6mm), mostly falling on Fri night. Warm (max 25°C on Sun afternoon, min 20°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | |||||||||||||||
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) | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 13 | S 15 | S 14 | S 13 | S 13 | S 14 | S 13 | SSE 13 | SSE 12 | S 11 | S 11 | E 8 | ESE 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 1391 | 1821 | 1109 | 833 | 957 | 855 | 928 | 1371 | 1297 | 905 | 794 | 1145 | 1018 | 860 | 830 | 209 | 157 | 817 | 219 | 450 | 581 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-off | cross-off | cross-off | off | off | cross-on | cross-on | glassy | cross-on | cross-off | cross-off | cross | off | cross-off | cross-off | cross-off | off | cross | off |
High Tide | 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 | 4:18AM1.25m | 4:46PM1.07m | 4:53AM1.16m | 5:13PM1.00m | ||||||||
Low Tide | 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 | 11:17AM0.21m | 11:04PM0.38m | 12:03PM0.36m | 10:59PM0.39m | ||||||||
 | |  |  |  |  | | | | | |  | |  | | | | | | | | |
 | 6:20 | — | — | 6:20 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:16 | — | — | 6:16 | — | — |
 | — | 5:35 | — | — | 5:35 | — | — | 5:36 | — | — | 5:36 | — | — | 5:36 | — | — | 5:37 | — | — | 5:37 | — |
mm | 2 | 1 | — | — | — | — | — | — | — | — | — | 2 | — | 2 | 2 | — | — | — | — | — | — |
Temp °C | 18 | 19 | 19 | 20 | 21 | 19 | 26 | 23 | 21 | 24 | 22 | 22 | 23 | 22 | 21 | 24 | 25 | 23 | 29 | 29 | 28 |
Feels °C | 18 | 18 | 19 | 18 | 19 | 18 | 26 | 23 | 21 | 25 | 22 | 24 | 24 | 20 | 21 | 25 | 25 | 24 | 30 | 29 | 29 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 | S 13 | S 15 | S 14 | S 13 | S 13 | S 14 | S 13 | SSE 13 | SSE 12 | SE 7 | S 11 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
| kJ | 1391 | 1821 | 1109 | 833 | 957 | 855 | 928 | 1371 | 1297 | 905 | 794 | 1145 | 1018 | 860 | 830 | 140 | 157 | 330 | 219 | 179 | 232 |
Swell 2 Height (m) Direction Period (s) | E 7 | — | — | SSE 11 | SSE 12 | E 5 | E 4 | — | — | E 8 | E 9 | E 9 | ESE 10 | ESE 9 | SE 13 | S 11 | SE 13 | S 11 | S 11 | S 11 | SSE 10 |
| kJ | 4 | — | — | 531 | 762 | 11 | 6 | — | — | 12 | 6 | 7 | 9 | 9 | 7 | 209 | 6 | 91 | 62 | 59 | 36 |
Swell 3 Height (m) Direction Period (s) | — | — | — | E 7 | — | — | — | — | — | — | — | — | — | — | — | SE 13 | — | SE 12 | — | — | — |
| kJ | — | — | — | 4 | — | — | — | — | — | — | — | — | — | — | — | 7 | — | 6 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | E 8 | E 5 | — | E 6 | — | — | — | ESE 4 | — | E 11 | ESE 6 | — | SE 7 | E 8 | — | E 8 | E 8 |
| kJ | — | — | — | — | 4 | 52 | — | 20 | — | — | — | 15 | — | 37 | 282 | — | 136 | 817 | — | 450 | 581 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 138 | 0 | 0 | 0 | 51 | 0 | 0 | 51 | 3 | 0 | 138 | 0 | 0 | 264 | 0 | 0 | 156 | 0 | 0 | 12 | 0 |
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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