Surf Forecasts:
Arpoador surf forecast from 12 Sep 2026:
- Best quality surf: Thursday 17 Sep, 6PM (local time) - 5ft (1.6m), 12s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 17 Sep, 6PM (local time) - 5ft (1.6m), 12s period, S swell with 702 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 12AM (local time) - 3.5ft (1.0m), 8s 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 Monday (Sep 14) at 12AM. The primary swell is predicted to be 1.0m and 8s period with a secondary swell of 0.4m and 8s. Another secondary swell of 0.9m and 5s 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 1.6m 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 1.2m 5s period and expected on Friday (Sep 18) at 3AM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Mon 14th Sep) | 3.5ft (1.0m) 8s |
| Best Surf | 6PM (Thu 17th Sep) | 5ft (1.6m) 12s |
| Most Powerful | 6PM (Thu 17th Sep) | 5ft (1.6m) 12s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright, Rusty here. Let's break this one down. There's a bit of a lull to start, but then it gets real good.
The next 16 days have a quiet opener. No real surf to talk about until Monday the 14th, so there's a couple of days of flatness. After that, things pick up, but the real gold is a full week and a half out.
We're at Arpoador. Monday the 14th offers a tiny 1.0m east swell with moderate energy (261). The wind goes glassy in the morning with a light offshore later. It's rideable but nothing special. Tuesday the 15th is similar, a 1.2m south-southeast swell, glassy and clean in the a.m., but again, it's pretty ordinary.
The action starts Thursday the 17th. The swell hits 1.4m from the south, winds are glassy offshore all day, and the energy jumps to a strong 465. Clean waves. Friday the 18th is clean in the morning with a 1.1m south swell, but the afternoon gets blown out. The weekend of the 19th and 20th remains clean but small, with waist-high south swells.
Now for the main event. On Thursday the 24th of September, we get a monster 2.5m south swell in the morning with a huge energy rating of 2730. The wind is a clean cross-offshore. This is expert territory only. The afternoon pushes to a massive 3.5m. Friday the 25th holds at a solid 3.0m with glassy offshore winds in the morning and an energy rating of 5445. This is a long-period groundswell (16 seconds), meaning powerful, well-shaped waves with long waits between sets. This format is best on the points and reefs around here. This is a serious heads-up for experienced surfers only.
Swell backs down to a still-hefty 1.8m by Saturday the 26th with clean offshore winds, good for strong intermediates, before fading to small clean waves by Sunday the 27th.
A nice run of clean, glassy mornings through the middle of the period keeps the stoke up, even when the swell is small.
Rusty.
Short Range ForecastHeavy rain (total 46mm), heaviest during Mon night. Warm (max 26°C on Sat morning, min 19°C on Sun afternoon). Mainly fresh winds. | Days 4-6 Weather SummaryHeavy rain (total 26mm), heaviest during Tue night. Warm (max 20°C on Tue morning, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||||
Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | |||||||||||||||
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 12 | S 11 | S 11 | SSW 6 | S 7 | S 8 | E 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 9 | SSE 8 | S 13 | S 12 | S 8 | S 10 | S 11 | S 11 | S 12 | S 11 |
Wave Graph  | |||||||||||||||||||||
 kJ | 97 | 58 | 37 | 59 | 96 | 134 | 140 | 115 | 192 | 175 | 151 | 176 | 111 | 161 | 216 | 277 | 371 | 628 | 272 | 383 | 302 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross-on | on | cross | cross-off | glassy | off | cross-on | glassy | on | glassy | cross-on | on | on | glassy | off | cross-off | cross-off | cross | cross-off |
High Tide | 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 | 7:15AM0.80m | 12:41PM0.69m | 7:02PM0.75m | ||||||
Low Tide | 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 | 10:18AM0.62m | 3:06PM0.66m | 11:00PM0.45m | |||||
 |  |  |  | |  | |  |  | | | | | | |  | |  | | | | |
 | 5:52 | — | — | 5:52 | — | — | 5:50 | — | — | 5:50 | — | — | 5:48 | — | — | 5:48 | — | — | 5:47 | — | — |
 | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — |
mm | — | — | 3 | 4 | 3 | 15 | 3 | 2 | 16 | — | 1 | 19 | 1 | 2 | 3 | — | — | — | — | — | — |
Temp °C | 26 | 26 | 22 | 20 | 20 | 19 | 20 | 21 | 21 | 20 | 20 | 19 | 20 | 20 | 19 | 19 | 18 | 18 | 22 | 23 | 21 |
Feels °C | 25 | 26 | 23 | 22 | 21 | 19 | 21 | 24 | 22 | 22 | 21 | 21 | 20 | 19 | 18 | 19 | 18 | 18 | 22 | 21 | 22 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 11 | S 11 | S 5 | S 7 | S 8 | S 8 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | S 8 | S 10 | S 11 | S 11 | S 12 | S 11 |
| kJ | 97 | 58 | 37 | 14 | 96 | 134 | 90 | 115 | 192 | 175 | 151 | 176 | 111 | 122 | 147 | 277 | 371 | 628 | 272 | 383 | 302 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | S 10 | SE 8 | SE 8 | ESE 5 | ESE 5 | S 12 | S 11 | S 10 | SSE 11 | SW 5 | S 13 | S 12 | SSE 14 | SE 10 | SE 9 | SE 5 | ESE 6 | ESE 7 |
| kJ | 23 | 12 | 13 | 31 | 18 | 18 | 13 | 15 | 71 | 84 | 72 | 40 | 14 | 161 | 216 | 63 | 33 | 28 | 30 | 53 | 83 |
Swell 3 Height (m) Direction Period (s) | SW 4 | SW 5 | SSW 4 | ESE 8 | S 9 | S 15 | SE 8 | S 13 | ESE 8 | — | S 12 | ESE 8 | S 13 | S 10 | SE 8 | S 13 | SSE 13 | — | S 13 | SSE 15 | SSE 14 |
| kJ | 4 | 4 | 2 | 14 | 28 | 4 | 18 | 54 | 12 | — | 26 | 65 | 87 | 31 | 68 | 125 | 60 | — | 90 | 169 | 143 |
Wind waves Height (m) Direction Period (s) | WSW 4 | WSW 5 | SW 4 | SSW 6 | — | ESE 5 | E 8 | E 6 | SW 2 | — | SW 5 | SSW 5 | SW 6 | SW 6 | — | — | — | E 4 | ESE 5 | — | — |
| kJ | 11 | 22 | 9 | 59 | — | 39 | 140 | 49 | 1 | — | 15 | 18 | 50 | 36 | — | — | — | 28 | 28 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 3 | 26 | 7 | 127 | 51 | 0 | 0 | 0 | 116 | 0 | 119 | 0 | 127 | 119 | 138 | 0 | 0 | 6 | 0 | 26 | 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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