
Surf Forecasts:
Prainha surf forecast from 28 Jul 2026:
- Best quality surf: Tuesday 28 Jul, 6AM (local time) - 1.5ft (0.4m), 8s period, ESE swell with glassy winds.
- Most powerful swell: Saturday 1 Aug, 6PM (local time) - 3ft (0.9m), 7s period, E swell with 79 kJ wave energy.
- Next surfable swell (1★+): Tuesday 28 Jul, 6AM (local time) - 1.5ft (0.4m), 8s period with ESE swell.
Best Forecast Surf Conditions for Prainha this week:
The surf forecast for Prainha over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Jul 28) at 6AM. The primary swell is predicted to be 0.4m and 8s period with a secondary swell of 0.6m and 5s. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Prainha in the next 16 days are 0.9m 7s and forecast to arrive on Saturday (Aug 01) at 6PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 6s period and expected on Friday (Jul 31) at 6PM.
| Wave Type | Time (-03) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 6AM (Tue 28th Jul) | 1.5ft (0.4m) 8s |
| Best Surf | 6AM (Tue 28th Jul) | 1.5ft (0.4m) 8s |
| Most Powerful | 6PM (Sat 1st Aug) | 3ft (0.9m) 7s |
Table - best surf conditions forecast for Prainha over the next 16 days.
The Lowdown
Alright, let’s see what’s cooking for Prainha. Rusty here, and I’ll be honest with you – this is a tough stretch. We’ve got a long, lean period ahead, so keep your expectations in check.
The overall pattern for the next 16 days is flat to tiny, with very little push. We’re looking at a whole lot of nothing for the first week, with swell heights barely cracking 2 feet and the combined wave energy hovering in the weak zone – mostly between 12 and 81, which is just a whisper of energy. The water temp is about average for this time of year, no big surprises there.
Starting out, Tuesday the 28th of July through to the 31st, it’s a write-off. Swell is tiny – 1 ft to 2 ft from the ESE or E, with periods under 8 seconds. That’s short-period windswill, not worth paddling out for. Winds are cross-on or glassy on Friday morning, but even then, the wave quality is rated as poor. Combined energy is at 52 or lower – barely a ripple.
Saturday the 1st of August and Sunday the 2nd show a slight bump. Saturday morning has 3 ft from the east, with a 6-second period, but it’s cross-on and choppy. Energy hits 70 in the morning, but it’s still poor. Sunday morning the 2nd is the first time we see “surfable waves but very ordinary conditions,” with 3 ft from the east and a clean look thanks to a light cross-offshore breeze from the SSW. Combined energy is 63 – still weak. If you’re desperate, that Sunday morning might be your only real chance in the first 9 days, but it’s nothing special.
Then we hit another flat spell. Monday the 3rd through to Friday the 7th, swell drops back to 1 ft to 2 ft. Energy stays below 100. There’s a clean window on Tuesday the 4th morning with 2 ft and a cross-offshore breeze, but again, it’s ordinary. The highlight of the whole outlook comes on Monday the 10th of August and Tuesday the 11th. Monday morning has 2 ft from the east but the wind goes offshore from the WSW, making it clean. Combined energy hits 95 – the highest we’ve seen that’s not totally messy. Monday afternoon is even better: 2 ft from the east, clean again, with energy at 102, which is now in the moderate range. That’s the standout window – small but clean, and the east swell direction is right in the sweet spot for Prainha, which is best with south swell.
Remember, Prainha is an advanced break, very consistent, and gets exposed to swell. It’s a right-hand point break, so when it’s working, it’s a gem. But with these sizes, it’s really only for longboarders or those who love tiny, clean waves. Crowds are possible here – it’s a popular spot.
After that, Tuesday the 11th and Wednesday the 12th see a bit more energy (111-114) but the swell stays small and the winds get messy again, so no real improvement.
So, to sum it up: the best on offer is the Monday the 10th of August, with clean 2 ft to 2 ft waves from the east and light offshore winds. It’s not a classic, but it’s the only window that looks worth a look. The rest is a long, flat grind.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Wed afternoon, min 16°C on Wed night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 20°C on Sun morning, min 17°C on Thu night). Wind will be generally light. | ||||||||||||||||||
Tuesday 28 | Wednesday 29 | Thursday 30 | Friday 31 | Saturday 1 | Sunday 2 | ||||||||||||||
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) | ESE 8 | ESE 8 | ENE 6 | ESE 8 | E 6 | ESE 8 | SSE 4 | E 7 | SE 5 | E 7 | E 7 | E 7 | ENE 5 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 |
Wave Graph | |||||||||||||||||||
26 | 25 | 25 | 13 | 30 | 6 | 6 | 24 | 5 | 23 | 14 | 14 | 40 | 65 | 77 | 66 | 61 | 45 | 51 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-off | off | cross-on | cross-off | cross | cross | glassy | glassy | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross | cross-off |
High Tide | 1:54AM1.15m | 2:38PM1.29m | 2:30AM1.23m | 3:14PM1.32m | 3:06AM1.29m | 3:49PM1.33m | 3:42AM1.32m | 4:25PM1.31m | 4:20AM1.32m | 5:03PM1.27m | 5:00AM1.28m | 5:44PM1.20m | |||||||
Low Tide | 8:09AM0.12m | 8:36PM0.41m | 8:33AM0.06m | 8:47PM0.38m | 8:56AM0.03m | 9:04PM0.36m | 9:22AM0.01m | 9:27PM0.33m | 9:51AM0.03m | 9:56PM0.33m | 10:23AM0.08m | 10:29PM0.34m | |||||||
— | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:54 | — | — | 6:52 | — | — | 6:52 | — | — | |
— | — | 5:45 | — | — | 5:45 | — | — | 5:45 | — | — | 5:46 | — | — | 5:46 | — | — | 5:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 22 | 24 | 22 | 24 | 26 | 18 | 17 | 17 | 17 | 18 | 19 | 19 | 19 | 19 | 19 | 20 | 18 | 18 |
Feels °C | 18 | 22 | 25 | 23 | 23 | 26 | 17 | 18 | 17 | 18 | 19 | 19 | 19 | 20 | 19 | 21 | 20 | 17 | 18 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | E 5 | SE 8 | ENE 6 | E 6 | E 6 | SSE 4 | E 7 | E 7 | E 7 | E 7 | E 7 | E 5 | E 6 | E 7 | E 7 | E 7 | E 7 | E 7 |
26 | 20 | 16 | 25 | 30 | 22 | 6 | 24 | 24 | 23 | 14 | 14 | 17 | 65 | 77 | 66 | 61 | 45 | 51 | |
Swell 2 Height (m) Direction Period (s) | ENE 4 | ESE 8 | SE 13 | ESE 8 | ESE 8 | ESE 8 | ENE 6 | SE 4 | SE 5 | SSE 4 | SE 5 | SSE 5 | SE 12 | SE 11 | SE 10 | S 10 | S 10 | S 10 | SSE 4 |
6 | 25 | 7 | 13 | 6 | 6 | 13 | 5 | 3 | 2 | 1 | 3 | 5 | 5 | 4 | 2 | 2 | 2 | 3 | |
Swell 3 Height (m) Direction Period (s) | E 7 | SE 13 | — | SE 12 | SE 13 | SE 12 | ESE 8 | SE 11 | SE 11 | SE 10 | SE 13 | SE 13 | SE 6 | — | — | — | — | — | — |
4 | 7 | — | 6 | 7 | 6 | 6 | 5 | 5 | 4 | 7 | 6 | 2 | — | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | NE 4 | — | ENE 6 | — | SSW 2 | — | S 4 | — | — | — | — | — | ENE 5 | — | — | — | — | — | — |
14 | — | 25 | — | 1 | — | 12 | — | — | — | — | — | 40 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 4 | 4 | 126 | 11 | 11 | 128 | 52 | 61 | 61 | 74 | 52 | 88 | 107 | 4 | 73 | 2 | 0 | 100 | 0 |
Best forecast wave conditions in Santa Catarina - Norte | |||||||||||||||||||
Best forecast wave conditions in Brazil | |||||||||||||||||||
Header Global | |||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
Information about the Prainha Surf forecast
The above surf forecast table for Prainha provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Prainha can be found by selecting the local surf guide option on the grey menu. Our Prainha 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 (Prainha) 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 Prainha 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.
Prainha is 14 km (9 miles) from Sao Francisco do Sul. If you plan a holiday in Santa Catarina - Norte, look for hotels and other accommodation in Sao Francisco do Sul. Sao Francisco do Sul has rooms for a wide range of budgets as well as car hire and transport links.










