Surf Forecasts:
Arpoador surf forecast from 17 Jul 2026:
- Best quality surf: Friday 17 Jul, 9PM (local time) - 4.5ft (1.3m), 7s period, E swell with offshore winds.
- Most powerful swell: Monday 20 Jul, 12AM (local time) - 5ft (1.6m), 8s period, E swell with 283 kJ wave energy.
- Next surfable swell (1★+): Friday 17 Jul, 9PM (local time) - 4.5ft (1.3m), 7s period with E 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 (Jul 17) at 9PM. The primary swell is predicted to be 0.9m and 10s period with a secondary swell of 0.2m and 18s. Another secondary swell of 1.3m and 7s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Arpoador in the next 16 days are 1.6m 8s and forecast to arrive on Monday (Jul 20) at 12AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Tuesday (Jul 21) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 9PM (Fri 17th Jul) | 4.5ft (1.3m) 7s |
| Best Surf | 9PM (Fri 17th Jul) | 4.5ft (1.3m) 7s |
| Most Powerful | 12AM (Mon 20th Jul) | 5ft (1.6m) 8s |
Table - best surf conditions forecast for Arpoador over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what's coming up for Arpoador over the next couple of weeks. First thing – water temp is sitting around 71.4°, which is pretty average for this time of year, so no surprises there.
Right now, we're in a bit of a lull. From Friday the 17th through to the end of the week after, it's mostly small, ordinary stuff – waves around 1.6ft to 3.9ft, mostly from SE or E, with short periods around 7-10 seconds. The wind's light and often cross-off or glassy, so the surface is clean, but there's just not enough push to get excited about. Crowds are likely at this spot, and with surf this average, it'll be a mellow paddle but nothing worth rushing for.
Then we hit the final week of July and things start waking up. Monday the 27th morning brings a noticeable pulse: 4.6ft from SSE with a period of 11 seconds, and the combined energy jumps to 661 – that's moderate-to-strong. Plus it's glassy calm with offshore tendencies. That's a solid session for the intermediate crew, though it's not the standout of the run.
The real jewels come at the end. Friday the 31st of July morning – 5.9ft of SSE swell, period 10 seconds, pumping out 775 in energy. That's strong. Wind is NE at 6 mph, cross-off, and the sky is clear. Clean lines, some proper push – this is the one to circle. Then Saturday the 1st of August morning backs it up with 6.2ft from ESE, period 9 seconds, energy 998 – also strong. Wind is NNE at 6 mph, offshore. Both mornings offer clean, punchy waves that'll have the banks working.
Keep in mind, with swell over 5ft, this isn't beginner territory any more – it's solid intermediate to expert stuff. And since Arpoador can get crowded, especially when it's good, expect a few locals out early.
So overall, a slow start then a strong finish. The last few days of July and the first of August are the ones to aim for. Get on it.
Short Range ForecastMostly dry. Warm (max 28°C on Mon morning, min 19°C on Fri night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 33°C on Wed afternoon, min 21°C on Wed night). Wind will be generally light. | |||||||||||||||||||
Fri 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | ||||||||||||||
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) | SE 10 | E 7 | SE 10 | E 7 | E 8 | ESE 8 | E 8 | E 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SSW 9 | S 9 | S 9 | SSE 11 |
Wave Graph  | ||||||||||||||||||||
 kJ | 112 | 242 | 79 | 85 | 263 | 66 | 137 | 283 | 64 | 163 | 66 | 48 | 35 | 35 | 48 | 35 | 28 | 26 | 38 | 37 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | off | cross-off | off | cross-off | cross-off | off | cross-off | glassy | cross-off | cross-off | glassy | cross | glassy | cross | cross-off |
High Tide | 5:03PM1.13m | 4:38AM1.21m | 5:38PM1.07m | 5:21AM1.16m | 6:19PM1.00m | 6:19AM1.08m | 6:57PM0.94m | 7:14AM0.99m | 7:31PM0.89m | 8:04AM0.90m | 8:08PM0.83m | 9:12AM0.80m | 9:04PM0.77m | |||||||
Low Tide | 11:48PM0.57m | 12:15PM0.21m | 00:39AM0.57m | 1:05PM0.33m | 1:19AM0.55m | 1:46PM0.44m | 1:53AM0.52m | 2:27PM0.54m | 2:38AM0.50m | 4:37PM0.59m | 4:53AM0.42m | 5:40PM0.55m | ||||||||
 |  | | | | | | | | | | | | | | | | | | | |
 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — |
 | 5:24 | — | — | 5:24 | — | — | 5:24 | — | — | 5:25 | — | — | 5:25 | — | — | 5:27 | — | — | 5:27 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 23 | 25 | 26 | 24 | 27 | 27 | 25 | 28 | 29 | 25 | 30 | 30 | 26 | 32 | 33 | 21 | 23 | 23 | 22 |
Feels °C | 23 | 21 | 24 | 24 | 22 | 27 | 26 | 24 | 27 | 28 | 23 | 28 | 29 | 24 | 30 | 33 | 21 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 10 | ESE 7 | ESE 7 | E 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | S 9 | S 8 |
| kJ | 112 | 86 | 41 | 26 | 120 | 66 | 44 | 107 | 64 | 45 | 66 | 48 | 35 | 35 | 48 | 35 | 26 | 26 | 38 | 34 |
Swell 2 Height (m) Direction Period (s) | ESE 7 | SE 10 | SE 10 | SE 10 | S 18 | S 16 | SSE 9 | S 13 | S 13 | S 12 | S 12 | S 12 | S 11 | S 11 | S 10 | SSW 10 | SSW 9 | S 9 | ESE 8 | SSE 11 |
| kJ | 26 | 82 | 79 | 46 | 25 | 20 | 8 | 14 | 14 | 11 | 12 | 3 | 3 | 2 | 19 | 19 | 28 | 23 | 26 | 37 |
Swell 3 Height (m) Direction Period (s) | S 19 | S 18 | S 16 | S 15 | S 14 | SSE 9 | S 15 | — | — | S 15 | — | — | — | S 13 | — | S 15 | SW 4 | SW 5 | S 12 | ESE 8 |
| kJ | 7 | 24 | 20 | 17 | 14 | 9 | 17 | — | — | 4 | — | — | — | 3 | — | 4 | 1 | 1 | 3 | 12 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | — | E 7 | E 8 | — | E 8 | E 8 | — | E 8 | — | — | — | — | — | — | W 4 | — | — | — |
| kJ | 80 | 242 | — | 85 | 263 | — | 137 | 283 | — | 163 | — | — | — | — | — | — | 5 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 6 | 6 | 0 | 0 | 3 | 6 | 15 | 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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