Surf Forecasts:
Arpoador surf forecast from 14 Sep 2026:
- Best quality surf: Thursday 17 Sep, 3AM (local time) - 2.5ft (0.8m), 11s period, S swell with cross-offshore winds.
- Most powerful swell: Friday 18 Sep, 3AM (local time) - 4.5ft (1.3m), 12s period, S swell with 504 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 12PM (local time) - 3ft (0.9m), 8s 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 Monday (Sep 14) at 12PM. The primary swell is predicted to be 0.9m and 8s period with a secondary swell of 0.4m and 13s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Arpoador in the next 16 days are 1.3m 12s and forecast to arrive on Friday (Sep 18) at 3AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Friday (Sep 18) at 6AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12PM (Mon 14th Sep) | 3ft (0.9m) 8s |
| Best Surf | 3AM (Thu 17th Sep) | 2.5ft (0.8m) 11s |
| Most Powerful | 3AM (Fri 18th Sep) | 4.5ft (1.3m) 12s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright, let’s talk Arpoador. It’s the only break with anything on the menu, and it’s a consistent, beginner-friendly spot that’s pretty exposed. But the start is slow.
Monday the 14th: small 3ft SSE swell, glassy, clean both morning and afternoon. Water temp’s 73°, a touch warmer than usual. Energy’s moderate. You can get wet, but it’s nothing exciting.
Tuesday and Wednesday are a write-off – onshore wind and poor surf. Thursday the 17th cleans up with cross-offshore wind and a bump in size to 5ft (SSE). Energy jumps to 464 in the morning, 755 in the afternoon. Still marginal, but at least it’s clean.
Friday morning September 18th is your best early call. 4ft S swell with a 12-second period – proper groundswell. Clean cross-offshore NE wind at just 3 mph, energy at 471. Conditions are close to good. That’s the one to aim for.
Saturday the 19th is clean early, but messy in the afternoon. Sunday the 20th sees the swell jump to 6ft from the E, but the period drops to a short 7 seconds. That’s big enough for experienced folks only, and with strong energy over 600, it’ll be punchy. Light offshore wind though, so it might be alright if you’re game. Expect crowds.
Then it goes flat. From Monday the 21st all the way through Sunday the 28th, the swell barely hits 3ft, and often it’s under 2ft. There are a couple of glassy mornings – the 23rd and the 26th – but the waves are tiny. That’s eight days of next-to-nothing.
Finally, Monday the 29th shows 4ft S swell with a 9-second period and clean cross-offshore wind. Energy hits 290 – decent. Tuesday the 30th gets up to 5ft SSE, but the wind is cross-shore and conditions are marginal. Still, after that long dry spell, it’ll feel like a relief.
Your standouts: Friday 18th morning for quality, and Sunday 20th for size if you’ve got the balls. Everything else is a wait-and-see.
Keep an eye on it – forecasts can flip. For now, Arpoador’s the only show.
Rusty.
Short Range ForecastHeavy rain (total 45mm), heaviest during Mon night. Warm (max 20°C on Tue morning, min 18°C on Mon morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 8mm), mostly falling on Sat night. Warm (max 23°C on Fri afternoon, min 18°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | |||||||||||||||
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) | SSE 8 | SSE 9 | SSE 8 | S 11 | SSE 10 | SSE 9 | SSE 8 | SSE 10 | S 12 | SSE 9 | SSE 10 | S 12 | S 12 | S 11 | ESE 7 | ESE 7 | ESE 7 | E 7 | E 7 | E 7 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 96 | 137 | 128 | 146 | 214 | 202 | 151 | 169 | 216 | 307 | 276 | 456 | 416 | 311 | 187 | 130 | 163 | 247 | 392 | 392 | 453 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | glassy | on | cross-on | cross-on | cross-on | on | cross | cross-off | cross-off | cross-off | cross-off | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off |
High Tide | 4:07PM1.06m | 4:29AM1.13m | 4:31PM1.00m | 5:08AM1.01m | 4:59PM0.91m | 6:06AM0.89m | 12:29PM0.62m | 00:53AM0.40m | 7:15AM0.80m | 12:41PM0.69m | 7:02PM0.75m | 8:16AM0.75m | 12:53PM0.75m | 8:06PM0.72m | 12:38PM0.81m | 10:05PM0.73m | |||||
Low Tide | 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 | 10:18AM0.62m | 3:06PM0.66m | 11:00PM0.45m | 3:22AM0.44m | 5:19PM0.58m | 5:15AM0.34m | 5:55PM0.48m | |||||
 | |  |  | |  | | |  | |  |  | | | | | | | | |  | |
 | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:48 | — | — | 5:47 | — | — | 5:45 | — | — | 5:43 | — | — |
 | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — |
mm | 3 | 4 | 21 | — | 1 | 10 | 2 | 1 | 3 | 1 | — | — | — | — | — | — | — | 7 | 5 | 4 | 1 |
Temp °C | 18 | 18 | 19 | 20 | 20 | 19 | 20 | 20 | 20 | 19 | 19 | 19 | 22 | 23 | 20 | 22 | 21 | 20 | 20 | 21 | 22 |
Feels °C | 19 | 19 | 22 | 20 | 20 | 20 | 20 | 20 | 19 | 18 | 17 | 17 | 22 | 22 | 20 | 22 | 20 | 19 | 21 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SSE 9 | SSE 8 | SE 7 | SSE 10 | SSE 9 | SSE 8 | SSE 10 | S 12 | SSE 9 | SSE 10 | S 12 | S 12 | S 11 | ESE 7 | ESE 7 | S 10 | ESE 7 | ESE 7 | ESE 7 | ESE 8 |
| kJ | 96 | 137 | 128 | 71 | 214 | 202 | 151 | 169 | 216 | 307 | 276 | 456 | 416 | 311 | 154 | 116 | 96 | 222 | 142 | 169 | 178 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | S 12 | S 11 | SSE 8 | SE 8 | SSE 13 | S 12 | SSE 5 | S 14 | S 13 | ESE 5 | ESE 6 | SSE 15 | S 11 | S 10 | S 15 | S 9 | SSE 9 | S 12 | S 11 |
| kJ | 31 | 54 | 71 | 146 | 50 | 88 | 57 | 113 | 19 | 142 | 212 | 46 | 43 | 21 | 146 | 130 | 4 | 45 | 27 | 69 | 23 |
Swell 3 Height (m) Direction Period (s) | SE 8 | ESE 8 | ESE 8 | E 8 | E 6 | SE 8 | SE 12 | ESE 8 | SE 7 | SE 10 | SE 8 | SE 8 | SE 9 | — | SSE 13 | S 15 | — | S 13 | S 13 | S 9 | S 14 |
| kJ | 18 | 13 | 13 | 42 | 22 | 20 | 6 | 37 | 34 | 15 | 35 | 25 | 12 | — | 35 | 4 | — | 31 | 51 | 2 | 4 |
Wind waves Height (m) Direction Period (s) | — | E 4 | — | — | SSW 3 | — | — | — | SSE 6 | — | ESE 9 | — | E 6 | ESE 6 | ESE 7 | ESE 6 | ESE 7 | E 7 | E 7 | E 7 | E 8 |
| kJ | — | 25 | — | — | 1 | — | — | — | 51 | — | 232 | — | 116 | 75 | 187 | 110 | 163 | 247 | 392 | 392 | 453 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 95 | 119 | 116 | 32 | 272 | 12 | 11 | 11 | 11 | 0 | 156 | 0 | 0 | 156 | 6 | 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.
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