Surf Forecasts:
Arpoador surf forecast from 26 Aug 2026:
- Best quality surf: Wednesday 26 Aug, 9AM (local time) - 5ft (1.6m), 12s period, S swell with glassy winds.
- Most powerful swell: Thursday 27 Aug, 12AM (local time) - 7.5ft (2.3m), 15s period, SSE swell with 2,203 kJ wave energy.
- Next surfable swell (1★+): Wednesday 26 Aug, 12AM (local time) - 6ft (1.8m), 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 Wednesday (Aug 26) at 12AM. The primary swell is predicted to be 1.8m 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 15s and forecast to arrive on Thursday (Aug 27) at 12AM. 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 Thursday (Aug 27) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Wed 26th Aug) | 6ft (1.8m) 13s |
| Best Surf | 9AM (Wed 26th Aug) | 5ft (1.6m) 12s |
| Most Powerful | 12AM (Thu 27th Aug) | 7.5ft (2.3m) 15s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's talk about what Arpoador's got cookin'. We got some serious S/SW groundswell energy on the way, but you're gonna have to be patient through some rough patches to find the gems.
The opener is a solid one. On Tuesday the 25th we kick off with a clean 6ft Southerly swell. The period is 14 seconds, a proper groundswell. The combined energy is pumpin' at (1352). The catch? The wind is cross-off from the ESE, so it'll be a little textured, but clean lines. That's the wave to surf, but it's still for the experienced guys.
The real standout, and I mean a proper one, is the morning of Thursday the 27th. The wind swings to a perfect offshore from the NNE, glassing up that solid 6ft groundswell from the SSE. The energy reading is still strong at (1585). This is your best bet for a proper session at Arpoador. Water temps are sitting at a nice 74°F, which is a touch warmer than usual for August, so you can leave the thick wetsuit at home. It feels fine in the water.
Now, don't get too excited about the weekend. The swell drops off a cliff. We get some weak, short-period E/ESE windswell from Saturday the 29th through Monday the 31st. The energy numbers barely break triple digits, hitting (109) and (68). It's pretty ordinary and mostly choppy with onshore winds. There's a solid four-day dry spell there from the 29th into the start of September.
After that wait, the next big event is on Thursday, September 3rd. This is a heavy one. We're looking at a long-period (10 second) SSW swell standing up at 10ft, with an enormous energy reading of (2405). But listen up - that size is for experienced surfers only. Beginners, hit the sand. The morning is glassy, with zero wind. Absolutely perfect looking conditions for the size, but it's going to be a big, powerful ocean. It might break a bit too straight for the beach here, so watch your line.
Things slowly fade out after that. Thursday afternoon and Friday get messy with cross-onshore winds, and the energy drops back down. The best chance for a fun, clean wave in that second week is the morning of Monday, September 7th, when the wind goes glassy again. The swell is a more manageable 3ft from the S (300 energy). It'll be a fun, clean day.
The bottom line: The best windows are the offshore morning of Thursday the 27th for a solid, clean session. Then, for the big dogs, the glassy morning of Thursday, September 3rd will be pumping, but it's strictly for the experienced crew. There's a dead spot from around the 29th to the 1st, so plan around that.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu morning. Warm (max 27°C on Fri afternoon, min 19°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 35°C on Mon morning, min 22°C on Sun night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 12 | SSE 12 | E 8 | ESE 8 | E 8 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 9 | ESE 9 |
Wave Graph  | |||||||||||||||||||
 kJ | 1104 | 787 | 2153 | 2203 | 1797 | 1285 | 599 | 299 | 189 | 320 | 66 | 127 | 101 | 43 | 58 | 57 | 90 | 64 | 92 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross | cross-off | cross-off | cross | off | off | cross-off | off | off | cross-off | off | cross-on | cross-on | cross-on | off | glassy | cross-on |
High Tide | 1:05AM1.06m | 2:14PM1.12m | 1:51AM1.16m | 2:47PM1.20m | 2:33AM1.25m | 3:16PM1.24m | 3:09AM1.30m | 3:43PM1.24m | 3:41AM1.31m | 4:10PM1.19m | 4:13AM1.26m | 4:38PM1.10m | |||||||
Low Tide | 8:26AM-0.03m | 8:50PM0.24m | 9:01AM-0.07m | 9:19PM0.23m | 9:31AM-0.08m | 9:44PM0.23m | 9:57AM-0.04m | 10:05PM0.26m | 10:22AM0.05m | 10:21PM0.29m | 10:45AM0.18m | 10:29PM0.32m | |||||||
 |  | |  |  |  |  | | | | | | | | | | | |  | |
 | — | 6:09 | — | — | 6:07 | — | — | 6:07 | — | — | 6:05 | — | — | 6:05 | — | — | 6:03 | — | — |
 | — | — | 5:39 | — | — | 5:39 | — | — | 5:40 | — | — | 5:40 | — | — | 5:40 | — | — | 5:42 | — |
mm | — | — | — | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 20 | 21 | 22 | 20 | 22 | 23 | 21 | 26 | 27 | 26 | 34 | 33 | 30 | 27 | 24 | 23 | 35 | 34 | 23 |
Feels °C | 21 | 22 | 23 | 20 | 22 | 23 | 21 | 27 | 27 | 27 | 34 | 34 | 31 | 28 | 25 | 25 | 34 | 34 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 12 | S 16 | SSE 15 | SSE 14 | SSE 14 | SSE 13 | S 12 | SSE 12 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 9 | ESE 9 |
| kJ | 1104 | 787 | 2153 | 2203 | 1797 | 1285 | 599 | 299 | 189 | 118 | 66 | 48 | 101 | 43 | 58 | 57 | 90 | 64 | 92 |
Swell 2 Height (m) Direction Period (s) | — | S 16 | — | — | — | — | ESE 6 | ESE 6 | ESE 7 | S 11 | SSE 11 | SSE 10 | SSE 10 | ESE 5 | WSW 3 | SW 6 | SW 5 | SW 5 | S 7 |
| kJ | — | 542 | — | — | — | — | 71 | 45 | 38 | 88 | 38 | 20 | 10 | 10 | 1 | 5 | 1 | 1 | 4 |
Swell 3 Height (m) Direction Period (s) | — | ESE 5 | — | — | — | — | — | — | — | — | — | — | — | SSE 10 | SSE 10 | S 10 | SW 6 | S 8 | SW 5 |
| kJ | — | 9 | — | — | — | — | — | — | — | — | — | — | — | 10 | 10 | 2 | 2 | 1 | 1 |
Wind waves Height (m) Direction Period (s) | — | E 5 | — | E 5 | E 6 | ESE 6 | E 6 | — | ESE 7 | E 8 | NNE 3 | E 8 | — | — | — | — | — | — | — |
| kJ | — | 17 | — | 78 | 64 | 47 | 200 | — | 45 | 320 | 3 | 127 | — | — | — | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 0 | 11 | 51 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 32 | 51 | 0 | 3 | 193 |
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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