
Surf Forecasts:
Porta do Sol surf forecast from 10 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 3AM (local time) - 4.5ft (1.4m), 12s period, SSE swell with glassy winds.
- Most powerful swell: Tuesday 11 Aug, 9AM (local time) - 5ft (1.6m), 13s period, SSE swell with 901 kJ wave energy.
- Next surfable swell (1★+): Wednesday 12 Aug, 3AM (local time) - 4.5ft (1.4m), 12s period with SSE swell.
Best Forecast Surf Conditions for Porta do Sol this week:
The surf forecast for Porta do Sol over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Wednesday (Aug 12) at 3AM. The primary swell is predicted to be 1.4m and 12s period with a secondary swell of 0.1m and 7s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Porta do Sol in the next 16 days are 1.6m 13s and forecast to arrive on Tuesday (Aug 11) at 9AM. Winds are predicted to be cross-onshore at the time the swell arrives.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 3AM (Wed 12th Aug) | 4.5ft (1.4m) 12s |
| Best Surf | 3AM (Wed 12th Aug) | 4.5ft (1.4m) 12s |
| Most Powerful | 9AM (Tue 11th Aug) | 5ft (1.6m) 13s |
Table - best surf conditions forecast for Porta do Sol over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a proper look at what’s cooking for the next couple of weeks at the one spot we’ve got on the radar.
The forecast period starts with a real slow grind. There’s barely a ripple to start, and it’s going to take a solid week before we see anything worth paddling out for. The first decent chance doesn't pop up until Wednesday the 12th, so we're looking at a gap of a couple of days with nothing to recommend.
We’ve got a sheltered little number called Porta do Sol (Madeira) on the list. It’s a beach and point setup that rarely breaks, which should already tell you we're not dealing with a reliable workhorse. The water’s sitting at a touch warmer than normal for the time of year, about 70°F, but that’s just a bonus detail.
The standout window, and I mean the only real standout, shapes up for Tuesday the 25th of August. The early morning is where it’s at. We’re looking at a clean 5ft swell from the SSE, with a period of 15 seconds – that’s proper long-period groundswell energy, the kind that wraps in with some real punch. The combined energy is strong (1083), so there’s plenty of power. The wind is glassy, dead calm, so the surface is going to be like a mirror. This is a rare treat for a spot that’s usually inconsistent. The afternoon sees a drop-off and a bit of a cross-onshore breeze creep in, so the morning session is your only window. The swell is pushing 5ft, which is manageable for a solid intermediate but might start to feel a bit much for beginners.
Before that, the week prior is a lot of ‘maybe’ and ‘not quite’. Wednesday the 12th offers a glassy morning with 5ft SSE swell (580 combined energy) – it’s surfable and clean, but nothing special. Thursday the 13th and Friday the 14th mornings are also glassy with clean 4ft to 4ft swell, offering small but tidy waves. Saturday the 15th morning stays glassy with 4ft swell, but the afternoon gets blown out with a moderate cross-onshore breeze.
A full week later, on Friday the 21st of August, we get another glassy morning with a tiny 2ft swell and a long 14-second period. The combined energy is moderate (408), so it’s small but has some shape. That’s about as good as the second week gets, and it’s still a far cry from the 25th.
Outside of that Tuesday the 25th morning, the rest is mostly junk. A lot of poor conditions, cross-onshore winds, and tiny, weak swell. For a spot that rarely breaks, this is a pretty typical blank run. The one morning on the 25th is the only time I’d be marking the calendar.
Rusty.
Short Range ForecastModerate rain (total 10mm), heaviest on Mon afternoon. Warm (max 23°C on Thu morning, min 17°C on Mon afternoon). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sat afternoon, min 19°C on Thu night). Wind will be generally light. | |||||||||||||||||||
Mon 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | ||||||||||||||
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 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | S 12 | SSE 13 | SSE 15 | SSE 14 | S 13 | SSE 13 | SSE 14 | SSE 13 | SSE 12 | SE 12 | SE 11 | SE 11 | SE 8 |
Wave Graph | ||||||||||||||||||||
892 | 690 | 901 | 888 | 531 | 557 | 557 | 365 | 411 | 796 | 563 | 427 | 451 | 665 | 424 | 313 | 309 | 233 | 249 | 116 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | glassy | on | glassy | glassy | on | glassy | glassy | on | cross | cross-off | cross-on | glassy | glassy | cross-on | off |
High Tide | 1:32AM0.99m | 2:46PM1.24m | 2:01AM1.11m | 3:08PM1.23m | 2:32AM1.21m | 3:29PM1.20m | 3:03AM1.27m | 3:50PM1.16m | 3:34AM1.29m | 4:11PM1.12m | 4:07AM1.27m | 4:33PM1.08m | ||||||||
Low Tide | 8:23PM0.38m | 8:15AM-0.03m | 8:54PM0.37m | 8:54AM-0.08m | 9:21PM0.37m | 9:28AM-0.07m | 9:43PM0.36m | 9:59AM-0.02m | 10:01PM0.35m | 10:26AM0.07m | 10:17PM0.33m | 10:48AM0.18m | 10:32PM0.31m | |||||||
— | — | 6:35 | — | — | 6:33 | — | — | 6:33 | — | — | 6:31 | — | — | 6:31 | — | — | 6:31 | — | — | |
5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | — | 5:47 | — | |
mm | 3 | 4 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 17 | 17 | 17 | 18 | 18 | 20 | 20 | 19 | 23 | 22 | 19 | 23 | 22 | 20 | 23 | 25 | 22 | 24 | 24 | 21 |
Feels °C | 16 | 16 | 16 | 17 | 17 | 21 | 21 | 20 | 24 | 24 | 20 | 25 | 23 | 22 | 23 | 27 | 25 | 26 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | E 8 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 12 | S 12 | SSE 13 | SSE 15 | SSE 14 | S 13 | SSE 13 | SSE 14 | SSE 13 | SSE 12 | SE 12 | SE 11 | SE 11 | SE 8 |
1 | 690 | 901 | 888 | 531 | 557 | 557 | 365 | 411 | 796 | 563 | 427 | 451 | 665 | 424 | 313 | 309 | 233 | 249 | 116 | |
Swell 2 Height (m) Direction Period (s) | — | E 8 | E 7 | E 7 | — | — | — | ESE 5 | ESE 5 | ESE 6 | ESE 5 | ESE 5 | ESE 5 | ESE 6 | ESE 6 | ESE 6 | SE 12 | SE 13 | SE 13 | S 10 |
— | 5 | 1 | 1 | — | — | — | 28 | 17 | 10 | 5 | 5 | 2 | 7 | 6 | 11 | 6 | 6 | 7 | 54 | |
Swell 3 Height (m) Direction Period (s) | — | E 12 | — | — | — | — | — | S 15 | E 6 | — | — | — | E 8 | — | — | — | ESE 12 | ESE 13 | ESE 13 | SE 13 |
— | 3 | — | — | — | — | — | 113 | 23 | — | — | — | 1 | — | — | — | 13 | 16 | 32 | 6 | |
Wind waves Height (m) Direction Period (s) | S 13 | — | — | — | E 7 | E 7 | E 4 | E 5 | — | — | — | — | — | — | — | — | E 6 | E 6 | ESE 7 | — |
892 | — | — | — | 1 | 1 | 31 | 70 | — | — | — | — | — | — | — | — | 86 | 88 | 148 | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 66 | 70 | 70 | 3 | 3 | 3 | 0 | 10 | 0 | 0 | 66 | 0 | 0 | 10 | 0 | 0 | 66 | 0 | 0 | 19 |
Best forecast wave conditions in São Paulo | ||||||||||||||||||||
Best forecast wave conditions in Brazil | ||||||||||||||||||||
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Information about the Porta do Sol Surf forecast
The above surf forecast table for Porta do Sol provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Porta do Sol can be found by selecting the local surf guide option on the grey menu. Our Porta do Sol 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 (Porta do Sol) 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 Porta do Sol 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.
Porta do Sol is 3 km (2 miles) from the city of Praia Grande. If you plan a holiday in São Paulo, look for hotels and other accommodation in Praia Grande. Praia Grande has rooms for a wide range of budgets as well as car hire and transport links.











