
Surf Forecasts:
Arpoador surf forecast from 11 Sep 2026:
- Best quality surf: Thursday 17 Sep, 6PM (local time) - 6ft (1.8m), 12s period, SSE swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 6PM (local time) - 6ft (1.8m), 12s period, SSE swell with 928 kJ wave energy.
- Next surfable swell (1★+): Friday 11 Sep, 3PM (local time) - 3.5ft (1.0m), 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 Friday (Sep 11) at 3PM. The primary swell is predicted to be 1.0m and 13s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.7m and 8s is also forecast. 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 12s and forecast to arrive on Thursday (Sep 17) at 6PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.4m 5s period and expected on Monday (Sep 14) at 12AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3PM (Fri 11th Sep) | 3.5ft (1.0m) 13s |
| Best Surf | 6PM (Thu 17th Sep) | 6ft (1.8m) 12s |
| Most Powerful | 6PM (Thu 17th Sep) | 6ft (1.8m) 12s |
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 cooking for Arpoador over the next couple of weeks.
Right off the bat, there’s a bit of a flat patch to start. We’ve got no real action worth paddling out for until Friday the 11th. The water’s sitting at a warm 73°, which is about a degree and a half warmer than usual for this time of year – nothing crazy, but noticeable.
Friday the 11th is where it starts to get interesting. The morning session is a bit of a gamble with marginal conditions, but the afternoon is where the magic happens. You’ll get clean 3ft waves from the south with a nice 13-second period, and a light cross-offshore breeze from the east. The combined swell energy is a solid moderate 426, and while it’s not huge, it’s going to be lined up and fun for a beginner-friendly wave.
The standout, without a doubt, is Monday the 14th. The whole day is looking prime. Morning brings in 4ft S swell with offshore NNE winds at 6 mph – that’s clean, that’s good. The afternoon picks up to 5ft from the SSE with a little more energy, hitting 584 on the combined swell meter, and still with light cross-offshore breezes. This is a great day for a longboard or a funboard; not too big, not too small.
Tuesday morning the 15th is a gem too – glassy conditions, 4ft from the SE, and absolutely no wind. That’s about as good as it gets for a dawn patrol. But don’t get too excited, because Tuesday afternoon turns to junk with onshore wind.
If you’re looking further out, mark Friday the 18th on your calendar. The morning session is the best of the whole forecast period. You’re looking at 5ft waves from the south with a long 13-second period, combined swell energy cranking at 983 – that’s moderate to strong energy. The wind is light and cross-offshore from the northeast. This is a proper swell, clean and powerful. It’s still a beginner-friendly option, but with that period and size, the better surfers will get some real juice out of it. Keep in mind, this is a week away, so don’t bet the house on it just yet.
Saturday the 19th morning is another glassy session, with 5ft waves from the east, but the period is short at 7 seconds, so it’ll be a bit weaker and lumpier. Still, with zero wind, you can’t complain.
After that, things wind down. There’s a long stretch of small, weak, and often onshore conditions from the 20th through the 24th. Not much to write home about. By Friday the 25th and Saturday the 26th, we see a little bump in size, with clean offshore mornings and 2ft to 3ft waves, but it’s really just a tail-end of the swell.
Crowds at Arpoador are often a thing, so expect company, especially on those clean days. But with consistent waves and a beginner-friendly break, it’s usually worth the crowd.
Rusty out.
Short Range ForecastHeavy rain (total 29mm), heaviest during Sun night. Warm (max 27°C on Fri afternoon, min 19°C on Sun morning). Mainly strong winds. | Days 4-6 Weather SummaryHeavy rain (total 71mm), heaviest during Mon night. Warm (max 22°C on Tue morning, min 18°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 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 14 | S 13 | S 12 | S 12 | S 11 | S 11 | S 6 | S 8 | SSE 9 | S 9 | SSE 9 | SE 8 | SE 8 | SE 8 | SSE 9 | SSE 8 | S 13 | S 12 | S 11 | SSE 9 | SSE 11 |
Wave Graph | |||||||||||||||||||||
489 | 342 | 184 | 97 | 58 | 36 | 33 | 156 | 337 | 194 | 286 | 260 | 167 | 154 | 193 | 153 | 156 | 171 | 281 | 367 | 667 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-off | off | cross-on | cross-on | cross-on | cross-on | cross | cross-off | off | cross-off | on | glassy | on | cross | on | on | glassy | cross | cross | cross-off |
High Tide | 3:05PM1.15m | 2:54AM1.26m | 3:24PM1.14m | 3:27AM1.26m | 3:45PM1.11m | 3:58AM1.22m | 4:07PM1.06m | 4:29AM1.13m | 4:31PM1.00m | 5:08AM1.01m | 4:59PM0.91m | 6:06AM0.89m | 12:29PM0.62m | 00:53AM0.40m | |||||||
Low Tide | 9:20AM-0.10m | 9:31PM0.20m | 9:49AM-0.02m | 9:54PM0.18m | 10:15AM0.09m | 10:12PM0.18m | 10:36AM0.23m | 10:24PM0.20m | 10:44AM0.38m | 10:24PM0.24m | 10:23AM0.49m | 10:24PM0.29m | 10:14AM0.56m | 1:29PM0.61m | 10:36PM0.36m | ||||||
5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:48 | — | — | |
— | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | |
mm | — | — | — | — | — | 1 | 2 | 6 | 20 | 3 | 9 | 38 | 1 | — | 16 | 1 | — | 3 | 1 | — | — |
Temp °C | 26 | 27 | 26 | 24 | 24 | 21 | 20 | 19 | 19 | 20 | 20 | 20 | 22 | 21 | 20 | 21 | 21 | 20 | 20 | 20 | 19 |
Feels °C | 28 | 29 | 29 | 27 | 25 | 22 | 21 | 19 | 19 | 22 | 21 | 22 | 22 | 21 | 20 | 22 | 20 | 21 | 19 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 13 | S 12 | S 12 | S 11 | S 4 | S 6 | S 8 | SSE 9 | S 9 | SSE 9 | SE 8 | SE 8 | SE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | S 11 | SSE 9 | SSE 11 |
489 | 342 | 184 | 97 | 58 | 9 | 33 | 156 | 337 | 194 | 286 | 260 | 167 | 154 | 193 | 153 | 117 | 126 | 281 | 367 | 667 | |
Swell 2 Height (m) Direction Period (s) | ESE 7 | ESE 8 | ESE 8 | ESE 8 | SSW 4 | S 11 | ESE 8 | SE 9 | SE 8 | ESE 6 | S 13 | S 12 | S 11 | S 10 | SSE 11 | S 10 | S 13 | S 12 | ESE 9 | S 12 | S 16 |
18 | 23 | 23 | 34 | 5 | 36 | 14 | 19 | 18 | 60 | 54 | 71 | 84 | 78 | 40 | 54 | 156 | 171 | 30 | 244 | 174 | |
Swell 3 Height (m) Direction Period (s) | SE 13 | SE 12 | SE 12 | SE 12 | ESE 8 | ESE 8 | S 10 | SSW 10 | S 15 | S 13 | S 13 | S 12 | SSE 9 | S 10 | E 14 | SSE 14 | S 10 | SE 9 | S 13 | — | ESE 10 |
7 | 6 | 6 | 5 | 24 | 13 | 17 | 36 | 4 | 31 | 83 | 100 | 92 | 74 | 4 | 61 | 47 | 3 | 56 | — | 10 | |
Wind waves Height (m) Direction Period (s) | — | E 8 | — | NW 3 | — | — | — | — | ESE 5 | E 6 | E 7 | — | — | SW 3 | WSW 6 | — | — | SSE 5 | — | ESE 8 | ESE 8 |
— | 55 | — | 1 | — | — | — | — | 102 | 161 | 161 | — | — | 3 | 82 | — | — | 38 | — | 53 | 6 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 0 | 0 | 3 | 119 | 12 | 51 | 12 | 0 | 0 | 0 | 97 | 0 | 119 | 3 | 11 | 138 | 0 | 51 | 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.










