
Surf Forecasts:
Arpoador surf forecast from 8 Sep 2026:
- Best quality surf: Monday 14 Sep, 9PM (local time) - 7ft (2.1m), 10s period, SSE swell with cross-offshore winds.
- Most powerful swell: Monday 14 Sep, 6PM (local time) - 6.5ft (2.0m), 10s period, SSE swell with 826 kJ wave energy.
- Next surfable swell (1★+): Tuesday 8 Sep, 12PM (local time) - 4ft (1.2m), 11s 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 (Sep 08) at 12PM. The primary swell is predicted to be 1.2m and 11s period with a secondary swell of 0.9m and 6s. Another secondary swell of 1.3m and 7s 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 2.0m 10s and forecast to arrive on Monday (Sep 14) at 6PM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Friday (Sep 11) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Tue 8th Sep) | 4ft (1.2m) 11s |
| Best Surf | 9PM (Mon 14th Sep) | 7ft (2.1m) 10s |
| Most Powerful | 6PM (Mon 14th Sep) | 6.5ft (2.0m) 10s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright, grab your board. Rusty here, talkin' to ya from this little slice of paradise. We've got a 16-day outlook on the cards, and while it's not gonna be all-time every day, there are a couple of golden windows you're gonna want to lock in.
Right off the bat, the water at Arpoador is sitting at a balmy 73°, which is a touch warmer than normal for this time of year – feels good on the skin, mate.
We kick things off on Tuesday, September 8th. The morning’s the move with a glassy 4ft swell from the south. The combined energy is moderate at 370, and with those clean conditions, it’s a nice little intro to the week. The afternoon gets a bit tricky with a cross-shore wind, so early sessions are the go.
Wednesday the 9th is small and ordinary, and Thursday the 10th looks a bit ordinary until the afternoon when a gentle offshore from the NNE kicks in with a 3ft south swell. That's when it cleans up nicely.
Now, here’s the first standout: Friday, September 11th. We wake up to clear skies, light offshore winds from the NE, and a 3ft south swell with a long period of 14 seconds. That groundswell is packing moderate energy (443) and the wave quality is going to be superb. The offshore wind will mean some clean, peeling lines. It might be a bit more walled up at a beach break with that long period, but Arpoador is a point break, so expect some proper shape. This is the one to call in sick for.
Saturday the 12th is a write-off with onshores, and Sunday the 13th is marginal.
Monday the 14th sees a return to form with a 5ft SSE swell and clean cross-off winds in the morning. That’s a solid 543 on the energy scale – solid, powerful waves.
Tuesday the 15th is still fun with offshore winds and a 4ft SE swell.
The middle of the week, Wednesday the 16th, turns ugly with onshore winds, so give it a miss.
Then we get a second standout, and this one’s a beauty. Sunday, September 20th. The afternoon is calling for a glassy 5ft swell from the east, with clean conditions and moderate energy at 422. That is a perfect afternoon session.
But the real barn burner, the one you circle on the calendar, is Wednesday, September 23rd. I’m talking 6ft of south swell with a very long period of 14 seconds. The combined energy is a massive 1389 – that's strong stuff. With a light offshore breeze and clean conditions, this is excellent surf for experienced surfers. It’s over 5ft, so it's a bit much for the beginners, and at that size, it’s a proper challenge. The long period and south direction are going to set up some juice at this point.
The week before that, on Thursday the 17th, we see a very promising 5ft SE swell in the afternoon with clean cross-off winds and 709 energy – that’s a very solid session too.
So to sum it up, your absolute best bet is that Wednesday the 23rd, with Friday the 11th and Sunday the 20th as the top-tier runners-up. Get on it.
Rusty.
Short Range ForecastHeavy rain (total 39mm), heaviest during Wed night. Warm (max 23°C on Thu afternoon, min 16°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 13mm), heaviest on Fri morning. Warm (max 27°C on Fri night, min 18°C on Sun night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | |||||||||||||||
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 10 | S 11 | E 7 | S 10 | S 10 | S 13 | S 12 | S 13 | S 16 | S 14 | S 13 | S 12 | S 12 | S 11 | SSW 6 | S 9 | S 10 | SSE 10 | SSE 9 | S 11 | SSE 10 |
Wave Graph | |||||||||||||||||||||
308 | 279 | 303 | 133 | 96 | 125 | 239 | 259 | 605 | 405 | 277 | 184 | 97 | 59 | 101 | 318 | 489 | 574 | 441 | 403 | 643 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | off | cross-off | on | off | cross | off | cross-on | off | cross-off | off | glassy | on | on | cross | cross-off | cross-off | cross-off | off | glassy |
High Tide | 2:22PM1.11m | 00:46AM1.02m | 2:32PM1.13m | 1:30AM1.13m | 2:47PM1.15m | 2:16AM1.21m | 3:05PM1.15m | 2:54AM1.26m | 3:24PM1.14m | 3:27AM1.26m | 3:45PM1.11m | 3:58AM1.22m | 4:07PM1.06m | ||||||||
Low Tide | 8:03PM0.35m | 8:06AM-0.10m | 8:37PM0.29m | 8:47AM-0.13m | 9:06PM0.23m | 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 | ||||||||
5:56 | — | — | 5:56 | — | — | 5:54 | — | — | 5:54 | — | — | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | |
— | 5:44 | — | — | 5:44 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | |
mm | 1 | — | — | 3 | 6 | 19 | 4 | 5 | 1 | 1 | — | 1 | — | 2 | 3 | 2 | 1 | 3 | 10 | 8 | 11 |
Temp °C | 17 | 20 | 20 | 21 | 20 | 21 | 22 | 23 | 23 | 25 | 26 | 27 | 25 | 20 | 20 | 19 | 19 | 18 | 18 | 18 | 19 |
Feels °C | 17 | 20 | 20 | 22 | 22 | 23 | 24 | 26 | 27 | 28 | 27 | 30 | 28 | 19 | 20 | 18 | 17 | 16 | 17 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | S 10 | S 11 | SE 7 | ESE 7 | ESE 7 | ESE 7 | S 12 | S 13 | S 16 | S 14 | S 13 | S 12 | S 12 | S 11 | S 6 | S 9 | S 10 | SSE 10 | SSE 9 | S 11 | SSE 10 |
308 | 279 | 147 | 108 | 93 | 70 | 239 | 259 | 605 | 405 | 277 | 184 | 97 | 59 | 41 | 318 | 489 | 574 | 441 | 403 | 643 | |
Swell 2 Height (m) Direction Period (s) | SE 6 | SE 6 | S 10 | S 10 | S 10 | S 13 | ESE 7 | ESE 7 | ESE 7 | ESE 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | S 11 | ESE 9 | ESE 9 | ESE 8 | ESE 8 | ESE 6 | S 10 |
56 | 70 | 171 | 133 | 96 | 125 | 44 | 48 | 31 | 31 | 32 | 35 | 35 | 25 | 36 | 8 | 8 | 7 | 12 | 100 | 394 | |
Swell 3 Height (m) Direction Period (s) | S 18 | S 16 | SSE 11 | S 16 | S 15 | S 10 | SE 13 | SE 13 | SE 13 | SE 13 | SE 12 | SE 12 | SE 11 | ESE 11 | ESE 8 | E 9 | — | — | — | — | SSW 12 |
6 | 5 | 100 | 5 | 17 | 67 | 7 | 7 | 7 | 7 | 6 | 6 | 5 | 12 | 14 | 23 | — | — | — | — | 29 | |
Wind waves Height (m) Direction Period (s) | — | ESE 7 | E 7 | — | — | — | — | — | — | N 3 | — | — | WSW 3 | SW 4 | SSW 6 | — | — | — | ESE 6 | — | — |
— | 153 | 303 | — | — | — | — | — | — | 3 | — | — | 4 | 4 | 101 | — | — | — | 90 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 12 | 0 | 0 | 95 | 0 | 3 | 0 | 3 | 0 | 0 | 0 | 0 | 193 | 116 | 97 | 11 | 11 | 0 | 0 | 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.










