
Surf Forecasts:
Arpoador surf forecast from 5 Sep 2026:
- Best quality surf: Monday 7 Sep, 12PM (local time) - 6ft (1.8m), 11s period, S swell with glassy winds.
- Most powerful swell: Monday 7 Sep, 12PM (local time) - 6ft (1.8m), 11s period, S swell with 716 kJ wave energy.
- Next surfable swell (1★+): Saturday 5 Sep, 6AM (local time) - 1.5ft (0.5m), 10s period with SSE 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 Saturday (Sep 05) at 6AM. The primary swell is predicted to be 0.5m and 10s period with a secondary swell of 0.3m and 8s. 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 1.8m 11s and forecast to arrive on Monday (Sep 07) at 12PM. Winds are predicted to be glassy at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Sat 5th Sep) | 1.5ft (0.5m) 10s |
| Best Surf | 12PM (Mon 7th Sep) | 6ft (1.8m) 11s |
| Most Powerful | 12PM (Mon 7th Sep) | 6ft (1.8m) 11s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright, Rusty here. Let's look ahead at what's on the menu for Arpoador.
The next 16 days start off pretty flat and sad. We're looking at a gap of almost no real surf for the first couple of days. Saturday the 5th is a write-off with tiny 2ft SSE swell and cross-off wind, just not worth getting wet.
Sunday's not much better. We get a pulse of 3ft S swell on Sunday morning but it's cross-on and messy. By Sunday afternoon the swell jumps to 7ft from the south with a short, weak period of 8 seconds – that's moving into big, ugly territory for a beginner spot like this.
Monday the 7th morning still looks a bit messy with 6ft S swell and onshore wind, but the real news comes Monday afternoon. The wind drops to glassy calm, and we get a clean 6ft south swell with a 10-second period. The energy is moderate (622), and that glassy surface is absolutely perfect for the beginner-friendly waves here. This is a genuine standout – the first real window of quality.
Tuesday the 8th morning holds clean with a 6ft SSE swell and cross-off breeze. Another good session. The rest of the week is a mixed bag of small, ordinary waves and the odd clean moment, like Wednesday morning's glassy 3ft SE swell and Thursday morning's clean 3ft S groundswell with a 12-second period (285 energy). That long period will help the shape.
Next week, the real fire lights up. On Monday the 14th afternoon, we get glassy conditions again with a solid 7ft south swell and a 12-second period. Energy is strong (1203) and it's described as very good conditions. This is another one to circle.
Then Tuesday the 15th morning is the full standout of the whole outlook. We're looking at an 8ft SSE groundswell with a very long 15-second period and NNE offshore wind. The energy is pumping hard at 2880. The file says "excellent surf conditions for experienced surfers," and I agree – this is a powerful, clean swell for the crew that knows what they're doing. For beginners, 8ft is too big, so this one is for the experts only.
After that, the swell hangs around in the 5ft to 7ft range through the following week, with clean windows on Thursday the 17th morning (5ft SSE, 13 sec, cross-off) and Friday the 18th afternoon (3ft SSE, 12 sec, cross-off). Saturday the 19th morning is glassy but small at 3ft S. The final standout pops on Sunday the 20th morning with 7ft ESE swell, 8-second period, and clean cross-off wind – energy at 798 – a good way to wrap up the run.
Arpoador is fairly exposed and can get crowded ("often" crowded), so for the best windows, especially the Monday afternoon and Tuesday morning standouts, expect company. The water temp is about average for this time of year.
Summing it up: Monday afternoon the 7th, Monday afternoon the 14th, and Tuesday morning the 15th are your true targets. Get on them.
Rusty.
Short Range ForecastHeavy rain (total 34mm), heaviest during Sun night. Warm (max 23°C on Fri night, min 15°C on Mon afternoon). Wind will be generally light. | Days 5-7 Weather SummaryModerate rain (total 10mm), heaviest on Wed afternoon. Warm (max 24°C on Thu afternoon, min 15°C on Mon night). Wind will be generally light. | ||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 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) | SSE 10 | SSE 10 | SSE 10 | S 6 | S 10 | S 8 | SSE 7 | S 9 | S 10 | SSE 9 | SSE 8 | S 10 | E 7 | SE 7 | S 10 | S 13 | S 12 | S 12 | S 16 |
Wave Graph | |||||||||||||||||||
86 | 59 | 33 | 20 | 121 | 504 | 191 | 502 | 615 | 371 | 327 | 249 | 240 | 104 | 96 | 125 | 232 | 266 | 177 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-off | cross-on | on | cross-on | cross-on | on | on | glassy | off | cross-off | cross | cross-off | glassy | off | off | cross-off | cross-on | cross-off |
High Tide | 1:04PM0.91m | 8:57PM0.65m | 1:40PM1.00m | 11:32PM0.75m | 2:08PM1.06m | 00:08AM0.89m | 2:22PM1.11m | 00:46AM1.02m | 2:32PM1.13m | 1:30AM1.13m | 2:47PM1.15m | 2:16AM1.21m | |||||||
Low Tide | 4:57AM0.36m | 6:07PM0.53m | 5:50AM0.20m | 6:45PM0.46m | 6:34AM0.07m | 7:23PM0.41m | 7:19AM-0.03m | 8:03PM0.35m | 8:06AM-0.10m | 8:37PM0.29m | 8:47AM-0.13m | 9:06PM0.23m | |||||||
— | 5:58 | — | — | 5:58 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:54 | — | — | |
— | — | 5:43 | — | — | 5:43 | — | — | 5:44 | — | — | 5:44 | — | — | 5:44 | — | — | 5:45 | — | |
mm | — | — | 1 | 3 | 6 | 5 | 13 | 3 | 3 | 3 | — | — | — | 2 | 4 | — | — | 1 | — |
Temp °C | 23 | 23 | 23 | 21 | 20 | 18 | 17 | 16 | 15 | 16 | 20 | 21 | 20 | 21 | 21 | 21 | 23 | 24 | 22 |
Feels °C | 24 | 24 | 23 | 23 | 19 | 16 | 15 | 15 | 16 | 15 | 19 | 20 | 19 | 22 | 23 | 23 | 25 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 10 | SSE 10 | SSE 10 | S 6 | S 10 | S 8 | SSE 7 | S 9 | S 10 | SSE 9 | SSE 8 | SE 7 | SE 7 | SE 7 | ESE 7 | ESE 7 | S 12 | S 12 | S 12 |
86 | 59 | 33 | 18 | 121 | 320 | 191 | 502 | 615 | 371 | 327 | 118 | 111 | 104 | 96 | 68 | 232 | 266 | 144 | |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 6 | — | S 11 | SSE 13 | S 10 | S 10 | S 10 | S 10 | S 13 | ESE 7 | ESE 8 | S 16 |
28 | 15 | 15 | 14 | 13 | 6 | 13 | 34 | — | 123 | 18 | 249 | 167 | 96 | 88 | 125 | 46 | 32 | 177 | |
Swell 3 Height (m) Direction Period (s) | S 10 | SSW 4 | S 9 | SSE 10 | E 4 | S 14 | S 13 | — | S 20 | — | S 18 | S 17 | S 16 | S 16 | S 15 | S 9 | SE 13 | SE 13 | ESE 8 |
2 | 1 | 2 | 20 | 1 | 16 | 30 | — | 7 | — | 6 | 5 | 5 | 5 | 17 | 60 | 7 | 7 | 39 | |
Wind waves Height (m) Direction Period (s) | WSW 3 | — | SSW 4 | — | — | S 8 | — | — | — | ESE 7 | ESE 7 | — | E 7 | — | — | — | — | — | — |
2 | — | 3 | — | — | 504 | — | — | — | 195 | 303 | — | 240 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 32 | 0 | 138 | 116 | 193 | 2157 | 138 | 11 | 0 | 0 | 0 | 12 | 0 | 0 | 0 | 0 | 0 | 51 | 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.










