Surf Forecasts:
Segundinha surf forecast from 19 Aug 2026:
- Best quality surf: Monday 24 Aug, 9PM (local time) - 10ft (3.0m), 14s period, S swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 9PM (local time) - 10ft (3.0m), 14s period, S swell with 2,802 kJ wave energy.
- Next surfable swell (1★+): Friday 21 Aug, 12AM (local time) - 5ft (1.5m), 7s period with E swell.
Best Forecast Surf Conditions for Segundinha this week:
The surf forecast for Segundinha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 21) at 12AM. The primary swell is predicted to be 1.5m and 7s period with a secondary swell of 1.0m and 7s. Another secondary swell of 0.3m and 11s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Segundinha in the next 16 days are 3.0m 14s and forecast to arrive on Monday (Aug 24) at 9PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Tuesday (Aug 25) at 9PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 12AM (Fri 21st Aug) | 5ft (1.5m) 7s |
| Best Surf | 9PM (Mon 24th Aug) | 10ft (3.0m) 14s |
| Most Powerful | 9PM (Mon 24th Aug) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Segundinha over the next 16 days.
The Lowdown
Alright folks, Rusty here again, but this time in feet and miles for you. Let’s talk about Segundinha.
We’re looking at a long stretch ahead, and for the first week, it’s pretty grim. This spot is a rare breaker anyway, and we’ve got a big gap with almost nothing worth paddling out for.
Right from the start through to the end of next week, the swell is tiny and weak. We’re talking waves under 2-3ft, with combined swell energy mostly under 100 for days. Winds are often cross or cross-on. There’s a tiny blip on Friday morning, August 21st, with 3ft from the east, but the energy is only moderate (111) and period is short. Don’t get too excited.
Finally, around Sunday, August 23rd, things start moving. The morning goes glassy with 4ft from the SSW, period around 9 seconds, energy moderate at 288. It’s rideable, but nothing special.
The big standout is Tuesday, August 25th. The morning is the one to circle. We’ve got a solid 8ft south groundswell with a very long 14-second period and energy cranked up to 2245 (strong). Wind is a clean cross-off from the ENE. This is powerful, lined-up swell for this point break. But at 8ft, this is expert territory – leave the foam boards at home. Crowds are sometimes a problem here, so expect a few others in the water.
The Monday, August 24th afternoon before that also looks good, with 7ft from the south at 14 seconds (energy 1919), but there’s light rain and a light cross-shore. Still good, but Tuesday morning is the clear winner.
After that, the swell drops back. By Thursday the 27th, it’s back to 3ft and ordinary. Later, Thursday, September 3rd, we see another pulse of 7ft south swell with a long 13-second period (energy 1518), but with onshore wind in the morning and rain, it’s iffy. Worth noting but far out and uncertain.
Water temp is 73°, a touch warmer than average for this time of year – comfortable for a long session.
That Tuesday the 25th morning is your best bet. The only real standout in a long, quiet stretch.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri night. Warm (max 30°C on Fri morning, min 19°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 5mm), mostly falling on Sun night. Warm (max 21°C on Sat morning, min 17°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | SSW 7 | SSW 8 | SSW 10 | SSW 10 | SSW 9 | S 9 | S 9 | S 13 | S 14 | S 13 | S 14 | S 13 | S 13 |
Wave Graph  | |||||||||||||||||||||
 kJ | 49 | 36 | 26 | 25 | 26 | 217 | 74 | 46 | 163 | 204 | 640 | 463 | 283 | 225 | 205 | 848 | 1918 | 2348 | 2245 | 1391 | 826 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | glassy | glassy | cross-on | off | cross-off | cross-on | cross-on | on | on | glassy | glassy | cross-on | cross-on | cross | cross | cross-off | cross-off | cross-off | off |
High Tide | 8:04PM3.04m | 8:17AM3.16m | 8:12PM3.22m | 8:26AM3.26m | 8:22PM3.34m | 8:38AM3.31m | 8:37PM3.41m | 8:53AM3.30m | 8:56PM3.41m | 9:12AM3.21m | 9:17PM3.33m | 9:33AM3.05m | 9:40PM3.16m | ||||||||
Low Tide | 1:44PM0.17m | 1:56AM-0.13m | 2:10PM-0.04m | 2:24AM-0.33m | 2:37PM-0.14m | 2:52AM-0.38m | 3:03PM-0.12m | 3:18AM-0.31m | 3:28PM0.01m | 3:43AM-0.13m | 3:49PM0.23m | 4:05AM0.15m | 4:03PM0.51m | ||||||||
 | |  | | | | |  |  | | |  | | | |  | |  | |  | | |
 | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:11 | — | — | 6:11 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 5:37 | — | — | 5:37 | — | — | 5:37 | — | — | 5:38 | — | — | 5:38 | — | — | 5:38 | — | — | 5:39 | — |
mm | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | 1 | 2 | 2 | — | — | — | — |
Temp °C | 29 | 29 | 26 | 26 | 26 | 25 | 30 | 24 | 21 | 21 | 20 | 20 | 21 | 21 | 20 | 18 | 18 | 18 | 21 | 22 | 19 |
Feels °C | 29 | 28 | 27 | 27 | 26 | 26 | 26 | 23 | 19 | 20 | 18 | 20 | 20 | 18 | 19 | 18 | 18 | 17 | 20 | 21 | 18 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | SSW 7 | SSW 8 | SSW 10 | SSW 10 | SSW 9 | S 9 | S 9 | S 13 | S 14 | S 13 | S 14 | S 13 | S 13 |
| kJ | 49 | 36 | 26 | 25 | 26 | 106 | 74 | 46 | 163 | 204 | 640 | 463 | 283 | 225 | 186 | 848 | 1918 | 2348 | 2245 | 1391 | 826 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 10 | SE 13 | SE 12 | SE 12 | S 11 | SSW 10 | SSW 9 | E 8 | E 8 | E 7 | E 7 | E 8 | E 8 | S 11 | E 7 | E 7 | S 16 | — | — | ESE 6 |
| kJ | 7 | 2 | 6 | 6 | 5 | 21 | 32 | 28 | 12 | 5 | 4 | 4 | 5 | 5 | 205 | 1 | 1 | 334 | — | — | 112 |
Swell 3 Height (m) Direction Period (s) | SE 8 | SE 13 | SE 8 | S 10 | S 12 | E 11 | S 16 | S 15 | S 14 | S 11 | — | — | — | S 13 | E 8 | — | — | — | — | — | — |
| kJ | 3 | 7 | 3 | 2 | 3 | 3 | 5 | 5 | 4 | 2 | — | — | — | 14 | 4 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | E 7 | — | SW 4 | — | — | — | — | — | — | — | — | — | — | — | ESE 5 | — |
| kJ | — | — | — | — | — | 217 | — | 18 | — | — | — | — | — | — | — | — | — | — | — | 39 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 11 | 54 | 35 | 35 | 54 | 0 | 11 | 113 | 41 | 125 | 202 | 0 | 0 | 165 | 45 | 45 | 2 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Rio de Janeiro | |||||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||||
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Information about the Segundinha Surf forecast
The above surf forecast table for Segundinha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Segundinha can be found by selecting the local surf guide option on the grey menu. Our Segundinha 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 (Segundinha) 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 Segundinha 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.
Are you planning a holiday in Rio de Janeiro? If you are looking for accommodation near Segundinha, camping, hotels and holiday cottages in Rio de Janeiro, consider staying in Niteroi which is 4 km (2 miles) away. Other places in and around Rio de Janeiro where you can find information about places to rent, and car hire include Sao Goncalo which is 13 km (8 miles) away, Rio de Janeiro, Duque de Caxias and Sao Joao de Meriti.
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