
Surf Forecasts:
Arpoador surf forecast from 5 Aug 2026:
- Best quality surf: Saturday 8 Aug, 9PM (local time) - 5ft (1.5m), 13s period, S swell with glassy winds.
- Most powerful swell: Saturday 8 Aug, 3PM (local time) - 5.5ft (1.7m), 14s period, S swell with 1,179 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 6AM (local time) - 2.5ft (0.8m), 12s 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 Wednesday (Aug 05) at 6AM. The primary swell is predicted to be 0.8m and 12s period with a secondary swell of 0.8m and 7s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Arpoador in the next 16 days are 1.7m 14s and forecast to arrive on Saturday (Aug 08) 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 1.3m 5s period and expected on Saturday (Aug 08) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Wed 5th Aug) | 2.5ft (0.8m) 12s |
| Best Surf | 9PM (Sat 8th Aug) | 5ft (1.5m) 13s |
| Most Powerful | 3PM (Sat 8th Aug) | 5.5ft (1.7m) 14s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Right, grab your board and let’s have a look at what’s ahead for the next couple of weeks. We’ve got a bit of a slow start, but there’s some proper swell on the horizon, so don’t write this stretch off just yet.
The first few days are pretty bleak. Wednesday and Thursday are small and, honestly, not worth getting wet for—just ankle-biters with no push. Friday is even worse, with a drop in size and some messy wind. The weekend starts off poor too. Saturday morning is tiny, and the afternoon gets a bit of a pulse but it’s chopped up and junky. Sunday morning is a tease—clean but still small. So, for the first four or five days, the surf is a no-go. You’re looking at a gap of several days with nothing worth paddling out for.
The first real sign of life comes early on Monday, August 12th. It’s still small, but the energy is picking up. The waves are clean, but it’s a bit of a struggle to get excited about 3ft. That’s more of a “check it if you’re desperate” kind of session.
The turning point is Thursday morning, August 15th. This is where things start to get interesting. We get a solid jump in size to 6ft, with a long-period S swell at 15 seconds. That’s some proper groundswell, with real push behind it. The wind is light offshore, grooming it to perfection. This is the standout of the whole window. The energy is strong, with a combined reading of 1571, and it’s clean—so clean. The wave direction is right in the pocket for Arpoador, which is a pretty exposed spot, so it should be handling this well. This is a session for experienced surfers, though. At 6ft, it's pushing it for beginners, but for the rest of you, it’s game on.
Saturday morning, August 17th, is another solid pick. The swell backs down a touch to 5ft, but it’s glassy, with no wind at all. That’s a rare treat. The period is a bit shorter, but the quality is there. It’s a great option for a cleaner, more relaxed session than Thursday, and the energy is still respectable.
The following week is a bit more of a mixed bag. The forecast is less certain, but there’s still potential. Sunday morning, August 18th, is clean and around 4ft, with that S swell still in the water. Monday is a letdown, with a drop in size and a shift in direction. Tuesday is poor, with weak, onshore wind and messy waves. The final day of the window, Wednesday August 21st, shows a return to glassy conditions and a 5ft swell, but it’s a long way out, so treat that as promising but not set in stone.
All in all, the first week is a write-off, but the second week is where the magic happens. The Thursday morning session is the one to circle on the calendar. It’s got size, power, and clean conditions. The Saturday glass-off is a close second if you want a more relaxed paddle. Keep your expectations high for the second week, but don’t get too carried away—forecasts can shift.
Stay stoked.
Rusty
Short Range ForecastMostly dry. Warm (max 34°C on Fri morning, min 23°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 30°C on Sun morning, min 21°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 12 | S 12 | S 11 | S 11 | S 10 | E 7 | ESE 7 | SSE 12 | SSE 11 | S 5 | S 6 | S 14 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 |
Wave Graph | |||||||||||||||||||
150 | 180 | 154 | 83 | 51 | 107 | 42 | 49 | 42 | 19 | 24 | 1179 | 663 | 660 | 640 | 413 | 213 | 504 | 690 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | off | cross | off | off | cross-off | cross-off | cross-off | on | glassy | cross-off | cross | glassy | off | cross-on | cross-on | cross-on | cross-on | cross |
High Tide | 7:13AM1.00m | 7:33PM0.85m | 8:11AM0.91m | 8:18PM0.76m | 11:05AM0.85m | 9:47PM0.69m | 12:28PM0.95m | 11:31PM0.75m | 2:13PM1.04m | 00:16AM0.85m | 2:45PM1.12m | 1:03AM0.95m | |||||||
Low Tide | 1:17AM0.50m | 2:13PM0.52m | 2:03AM0.49m | 5:05PM0.55m | 5:06AM0.40m | 6:05PM0.49m | 5:58AM0.25m | 6:56PM0.45m | 6:46AM0.12m | 7:51PM0.40m | 7:40AM0.00m | 8:36PM0.37m | |||||||
— | 6:24 | — | — | 6:24 | — | — | 6:22 | — | — | 6:22 | — | — | 6:22 | — | — | 6:20 | — | — | |
— | — | 5:31 | — | — | 5:32 | — | — | 5:32 | — | — | 5:34 | — | — | 5:34 | — | — | 5:34 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | 3 |
Temp °C | 25 | 30 | 28 | 27 | 31 | 30 | 27 | 34 | 28 | 23 | 24 | 24 | 27 | 30 | 25 | 22 | 23 | 22 | 21 |
Feels °C | 26 | 30 | 27 | 27 | 30 | 29 | 28 | 29 | 26 | 24 | 24 | 23 | 26 | 29 | 24 | 23 | 25 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | S 12 | S 11 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | E 7 | SSE 11 | S 5 | S 6 | S 14 | S 13 | S 13 | S 13 | S 12 | S 12 | S 12 | S 12 |
31 | 180 | 154 | 61 | 42 | 30 | 42 | 28 | 42 | 17 | 24 | 1179 | 663 | 660 | 640 | 413 | 213 | 504 | 690 | |
Swell 2 Height (m) Direction Period (s) | S 12 | ESE 7 | ESE 8 | S 11 | S 10 | S 10 | SSE 9 | SSE 12 | ESE 7 | ESE 7 | ESE 7 | — | ESE 5 | ESE 6 | ESE 8 | SE 8 | S 6 | E 8 | E 8 |
150 | 62 | 51 | 83 | 51 | 50 | 28 | 49 | 18 | 16 | 11 | — | 22 | 22 | 27 | 17 | 47 | 5 | 1 | |
Swell 3 Height (m) Direction Period (s) | SE 9 | — | — | — | S 16 | SSE 15 | SSE 13 | S 9 | NW 3 | S 10 | S 10 | — | S 16 | E 7 | SE 13 | — | ESE 8 | SE 12 | — |
22 | — | — | — | 5 | 22 | 35 | 14 | 2 | 19 | 17 | — | 129 | 67 | 7 | — | 13 | 6 | — | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | E 7 | — | NNW 3 | NW 3 | — | E 8 | ESE 4 | — | — | E 8 | WSW 4 | — | — | — |
— | — | — | — | — | 107 | — | 3 | 1 | — | 18 | 16 | — | — | 35 | 17 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 3 | 61 | 6 | 0 | 174 | 0 | 0 | 45 | 174 | 97 | 51 | 39 |
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.











